* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size: 16px;
}

:root,
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3a3a3a;
    --bg-card: #242424;
    --bg-hover: #333333;
    --text-primary: #f5f5f5;
    --text-secondary: #b8b8b8;
    --text-muted: #888888;
    --accent-blue: #4a9eff;
    --accent-purple: #a855f7;
    --accent-green: #22c55e;
    --accent-orange: #ff8c00;
    --accent-red: #ff4757;
    --accent-cyan: #00d4ff;
    --accent-yellow: #ffd700;
    --accent-focus: rgba(74, 158, 255, 0.1);
    --accent-shadow: rgba(74, 158, 255, 0.3);
    --border-color: #404040;
    --border-light: #555555;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

body {
    font-family: var(--font-family, 'Inter'), -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: var(--font-size, 16px);
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    font-weight: 400;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: var(--bg-primary);
}

header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    position: relative;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

header h1 i {
    color: var(--accent-blue);
    font-size: 1.25rem;
}

.semester-info {
    background: var(--bg-tertiary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.header-controls {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left 0.3s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    color: white;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-purple), #7c3aed);
    color: white;
    box-shadow: 0 2px 4px rgba(139, 92, 246, 0.3);
}

.btn-accent:hover {
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(139, 92, 246, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, var(--accent-red), #dc2626);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
}

.btn-danger-subtle {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid transparent;
    padding: 0.5rem;
}

.btn-danger-subtle:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
    border-color: var(--accent-red);
}

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
    gap: 1px;
}

.sidebar {
    width: 320px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
}

.search-section {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.search-box {
    position: relative;
    margin-bottom: 1rem;
}

.search-box input {
    width: 100%;
    padding: 0.875rem 2.75rem 0.875rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--accent-focus);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-box i {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.view-toggles {
    display: flex;
    background: var(--bg-card);
    border-radius: 8px;
    padding: 0.25rem;
    gap: 0.25rem;
}

.view-btn {
    flex: 1;
    padding: 0.5rem 0.75rem;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.view-btn.active {
    background: var(--accent-blue);
    color: white;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

.view-btn:hover:not(.active) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.subjects-container {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    position: relative;
    height: 0;
}

.subject-folder {
    margin-bottom: 0.75rem;
    background: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.2s ease;
}

.subject-folder:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow);
}

.subject-header {
    padding: 1rem 1.25rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.2s ease;
}

.subject-header:hover {
    background: var(--bg-hover);
}

.subject-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.subject-icon {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.subject-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.subject-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-card);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
}

.subject-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-add-note {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.375rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    opacity: 0;
    transform: scale(0.8);
}

.subject-header:hover .btn-add-note {
    opacity: 1;
    transform: scale(1);
}

.btn-add-note:hover {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
    transform: scale(1.1);
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

.subject-toggle {
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.subject-folder.expanded .subject-toggle {
    transform: rotate(90deg);
}

.notes-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.subject-folder.expanded .notes-list {
    max-height: 400px;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* Custom scrollbar for notes list */
.notes-list::-webkit-scrollbar {
    width: 6px;
}

.notes-list::-webkit-scrollbar-track {
    background: var(--bg-card);
    border-radius: 3px;
}

.notes-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
    transition: background 0.2s ease;
}

.notes-list::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* Subtle fade effect at bottom when scrollable */
.subject-folder.expanded .notes-list {
    position: relative;
}

.subject-folder.expanded .notes-list::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 20px;
    background: linear-gradient(transparent, var(--bg-card));
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

/* Show fade effect when content is scrollable */
.subject-folder.expanded .notes-list:hover::after {
    opacity: 0.7;
}

.note-item {
    padding: 0.875rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.note-item:last-child {
    border-bottom: none;
}

.note-item:hover {
    background: var(--bg-hover);
}

.note-item.active {
    background: rgba(59, 130, 246, 0.1);
    border-left: 3px solid var(--accent-blue);
}

.note-type-icon {
    font-size: 1rem;
    margin-top: 0.125rem;
    flex-shrink: 0;
}

.note-details {
    flex: 1;
    min-width: 0;
}

.note-item h3 {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.375rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.note-item p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 0.375rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.note-item .note-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.editor-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    position: relative;
}

.welcome-screen {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    position: relative;
}

.welcome-content {
    text-align: center;
    max-width: 400px;
    padding: 2rem;
}

.welcome-content i {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: var(--accent-blue);
    opacity: 0.8;
}

.welcome-content h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.welcome-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.welcome-actions {
    display: flex;
    justify-content: center;
}

.note-editor {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
}

.note-header {
    padding: 1.5rem 2rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
}

.note-title-section {
    flex: 1;
    min-width: 0;
}

.title-input {
    font-size: calc(var(--font-size, 1rem) * 1.75);
    font-weight: 600;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    width: 100%;
    margin-bottom: 0.5rem;
    font-family: var(--font-family, inherit);
}

.title-input::placeholder {
    color: var(--text-muted);
}

.note-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.note-breadcrumb i {
    font-size: 0.7rem;
}

.note-actions {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.note-type-select {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
}

.note-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.editor-toolbar {
    padding: 1rem 2rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.toolbar-group {
    display: flex;
    gap: 0.25rem;
}

.toolbar-separator {
    width: 1px;
    height: 24px;
    background: var(--border-color);
    margin: 0 0.5rem;
}

.toolbar-btn {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.toolbar-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-light);
}

.toolbar-btn.active {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

.note-content {
    flex: 1;
    padding: 2rem;
    outline: none;
    font-size: var(--font-size, 1rem);
    font-family: var(--font-family, inherit);
    line-height: 1.7;
    overflow-y: auto;
    color: var(--text-primary);
    background: var(--bg-primary);
}

.note-content * {
    font-family: inherit;
}

.note-content:empty:before {
    content: attr(placeholder);
    color: var(--text-muted);
    font-style: italic;
}

.note-content h1,
.note-content h2,
.note-content h3 {
    color: var(--text-primary);
    margin: 1.5rem 0 1rem 0;
}

.note-content ul,
.note-content ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.note-content li {
    margin: 0.5rem 0;
}

.note-content blockquote {
    border-left: 4px solid var(--accent-blue);
    padding-left: 1rem;
    margin: 1rem 0;
    color: var(--text-secondary);
    font-style: italic;
}

.note-content code {
    background: var(--bg-card);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
}

.note-content pre {
    background: var(--bg-card);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

.note-content mark {
    background: rgba(251, 191, 36, 0.3);
    color: var(--text-primary);
    padding: 0.125rem 0.25rem;
    border-radius: 3px;
}

@media (max-width: 768px) {
    .sidebar {
        width: 250px;
    }

    .header-controls {
        flex-direction: column;
        gap: 0.25rem;
    }

    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 600px) {
    .main-content {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: 200px;
    }

    .subject-folder.expanded .notes-list {
        max-height: 150px;
    }

    .note-header {
        padding: 1rem;
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .note-meta {
        justify-content: space-between;
    }
}

.dropdown {
    position: relative;
}

.dropdown-toggle::after {
    content: '';
    margin-left: 0.5rem;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu button {
    width: 100%;
    padding: 0.75rem 1rem;
    background: transparent;
    border: none;
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    transition: background 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
}

.dropdown-menu button:hover {
    background: var(--bg-hover);
}

.dropdown-menu button:first-child {
    border-radius: 8px 8px 0 0;
}

.dropdown-menu button:last-child {
    border-radius: 0 0 8px 8px;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple), var(--accent-green));
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 2rem 2.5rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    position: relative;
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
    letter-spacing: -0.025em;
}

.modal-header h3 i {
    font-size: 1.75rem;
    padding: 0.75rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: 2rem 2.5rem;
    max-height: 60vh;
    overflow-y: auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.color-picker {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.color-option {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all 0.2s ease;
    position: relative;
}

.color-option:hover {
    transform: scale(1.1);
}

.color-option.selected {
    border-color: var(--text-primary);
    box-shadow: 0 0 0 2px var(--bg-secondary);
}

.color-option.selected::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: bold;
    font-size: 0.9rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.modal-footer {
    padding: 1.5rem 2.5rem 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
}

.modal-footer .btn {
    min-width: 120px;
    font-weight: 600;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

@media (max-width: 768px) {
    .sidebar {
        width: 280px;
    }

    .header-controls {
        flex-direction: column;
        gap: 0.5rem;
    }

    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }

    .note-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .note-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .editor-toolbar {
        padding: 0.75rem 1rem;
    }

    .note-content {
        padding: 1.5rem;
    }
}

@media (max-width: 600px) {
    .main-content {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: 250px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .header-left {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .semester-info {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }

    .modal-content {
        width: 95%;
        margin: 1rem;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1rem 1.5rem;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideInRight 0.3s ease-out;
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.note-content:focus {
    box-shadow: inset 0 0 0 2px rgba(59, 130, 246, 0.1);
}

::selection {
    background: rgba(59, 130, 246, 0.3);
    color: var(--text-primary);
}

@media print {

    .sidebar,
    .editor-toolbar,
    .note-header .note-actions {
        display: none !important;
    }

    .editor-area {
        background: white !important;
    }

    .note-content {
        color: black !important;
        background: white !important;
    }
}

.note-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.375rem;
}

.note-subject {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.125rem 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
}

.recent-notes .note-item,
.search-results .note-item {
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-card);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.recent-notes .note-item:hover,
.search-results .note-item:hover {
    background: var(--bg-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

button:focus,
input:focus,
select:focus,
[contenteditable]:focus {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

.success {
    color: var(--accent-green);
}

.error {
    color: var(--accent-red);
}

.note-content ul li::marker {
    color: var(--accent-blue);
}

.note-content ol li::marker {
    color: var(--accent-blue);
    font-weight: 600;
}

.note-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 1rem 0;
}

.note-content th,
.note-content td {
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    text-align: left;
}

.note-content th {
    background: var(--bg-tertiary);
    font-weight: 600;
}

.note-content blockquote {
    background: var(--bg-card);
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
    position: relative;
}

.note-content blockquote::before {
    content: '"';
    font-size: 3rem;
    color: var(--accent-blue);
    position: absolute;
    top: -0.5rem;
    left: 0.5rem;
    opacity: 0.3;
}

.welcome-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-item i {
    font-size: 1.5rem;
    color: var(--accent-blue);
}

.subject-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.subject-code {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
}

.subject-professor {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-style: italic;
}

.note-item.favorite {
    border-left: 3px solid var(--accent-orange);
}

.favorite-star {
    color: var(--accent-orange);
    margin-left: 0.5rem;
    font-size: 0.8rem;
}

.btn-icon {
    padding: 0.5rem;
    width: auto;
    height: auto;
    min-width: 36px;
}

.btn-icon.active {
    background: var(--accent-orange);
    color: white;
    border-color: var(--accent-orange);
}

.section-header {
    padding: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    margin-bottom: 0.5rem;
    border-radius: 8px 8px 0 0;
}

.favorites-section,
.recent-notes,
.search-results {
    background: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin: 0;
    height: 100%;
    max-height: 100%;
    display: flex;
    flex-direction: column;
}

.empty-subject {
    padding: 1rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-style: italic;
}

.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-lg);
    z-index: 3000;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    max-width: 400px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-left: 4px solid var(--accent-green);
}

.toast.error {
    border-left: 4px solid var(--accent-red);
}

.toast.info {
    border-left: 4px solid var(--accent-blue);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toast-icon {
    font-size: 1.25rem;
}

.toast.success .toast-icon {
    color: var(--accent-green);
}

.toast.error .toast-icon {
    color: var(--accent-red);
}

.toast.info .toast-icon {
    color: var(--accent-blue);
}

.toast-message {
    color: var(--text-primary);
    font-size: 0.9rem;
}

mark {
    background: rgba(251, 191, 36, 0.4);
    color: var(--text-primary);
    padding: 0.125rem 0.25rem;
    border-radius: 3px;
    font-weight: 500;
}

.color-option[data-color="#84cc16"] {
    background: #84cc16 !important;
}

.color-option[data-color="#f97316"] {
    background: #f97316 !important;
}

.modal-body .form-group:last-child {
    margin-bottom: 0;
}

@media print {

    .sidebar,
    .editor-toolbar,
    .note-header .note-actions,
    .toast {
        display: none !important;
    }

    .editor-area {
        background: white !important;
    }

    .note-content {
        color: black !important;
        background: white !important;
        padding: 1rem !important;
    }

    .note-header {
        background: white !important;
        color: black !important;
        border-bottom: 2px solid #333 !important;
    }

    .title-input {
        color: black !important;
        font-size: 1.5rem !important;
    }

    .note-breadcrumb {
        color: #666 !important;
    }
}

@media (max-width: 480px) {
    .welcome-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .stat-item {
        flex-direction: row;
        justify-content: center;
    }

    .toast {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        max-width: none;
    }

    .subject-details {
        gap: 0.125rem;
    }

    .subject-code,
    .subject-professor {
        font-size: 0.7rem;
    }
}

@keyframes slideInUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.note-item {
    animation: slideInUp 0.2s ease-out;
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--accent-blue);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.btn:focus-visible,
.toolbar-btn:focus-visible,
.view-btn:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

@media (hover: hover) {
    .note-item:hover {
        transform: translateY(-1px);
        box-shadow: var(--shadow);
    }

    .subject-folder:hover {
        transform: translateY(-1px);
    }
}

.view-btn.active {
    font-weight: 600;
}

.subject-picker-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 300px;
    overflow-y: auto;
}

.subject-picker-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.subject-picker-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.subject-picker-item.selected {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.subject-picker-icon {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    flex-shrink: 0;
}

.subject-picker-info {
    flex: 1;
    min-width: 0;
}

.subject-picker-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.subject-picker-details {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.subject-picker-code {
    background: var(--bg-card);
    padding: 0.125rem 0.5rem;
    border-radius: 12px;
    font-weight: 500;
}

.subject-picker-count {
    color: var(--text-muted);
}

.toolbar-btn.active {
    font-weight: 600;
}

.note-content::-webkit-scrollbar {
    width: 12px;
}

.note-content::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 6px;
}

.note-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 6px;
    border: 2px solid var(--bg-secondary);
}

.note-content::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

.settings-section {
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.settings-section:hover {
    border-color: var(--border-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-section h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--accent-blue);
}

.settings-section h4 i {
    color: var(--accent-blue);
    font-size: 1.2rem;
    padding: 0.5rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 8px;
}

.settings-select {
    width: 100%;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 3rem;
}

.settings-select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    outline: none;
}

.settings-select:hover {
    border-color: var(--border-light);
    background: var(--bg-hover);
}

.slider-group {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 0.5rem 0;
}

.settings-slider {
    flex: 1;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    outline: none;
    cursor: pointer;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.settings-slider:hover {
    background: var(--bg-hover);
}

.settings-slider::-webkit-slider-thumb {
    appearance: none;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 3px 8px rgba(59, 130, 246, 0.4);
    transition: all 0.2s ease;
}

.settings-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.6);
}

.settings-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 3px 8px rgba(59, 130, 246, 0.4);
    transition: all 0.2s ease;
}

.settings-slider::-moz-range-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.6);
}

#fontSizeValue {
    font-weight: 600;
    color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    min-width: 50px;
    text-align: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text-primary);
    padding: 1rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-weight: 500;
    margin-bottom: 0.5rem;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    min-height: 60px;
}

.checkbox-label:hover {
    background: var(--bg-hover);
}

.checkbox-label:active .checkmark {
    transform: scale(0.95);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    position: relative;
    transition: all 0.2s ease;
    flex-shrink: 0;
    display: inline-block;
}

.checkbox-label:hover .checkmark {
    border-color: var(--accent-blue);
}

.checkbox-label input[type="checkbox"]:checked+.checkmark {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
}

.checkbox-label input[type="checkbox"]:checked+.checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
    line-height: 1;
}

@keyframes checkmarkPop {
    0% {
        transform: translate(-50%, -50%) scale(0);
    }

    50% {
        transform: translate(-50%, -50%) scale(1.2);
    }

    100% {
        transform: translate(-50%, -50%) scale(1);
    }
}

.data-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat {
    text-align: center;
    padding: 1.5rem 1rem;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
}

.stat:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-blue);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.data-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.data-actions .btn {
    flex: 1;
    min-width: 150px;
}

body {
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
    background-attachment: fixed;
}

.sidebar {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
}

.note-editor {
    background: var(--bg-secondary);
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

@keyframes slideInLeft {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.subject-folder {
    animation: slideInLeft 0.3s ease-out;
}

.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.btn:hover::after {
    width: 300px;
    height: 300px;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(26, 26, 46, 0.5);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #2563eb, #7c3aed);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    letter-spacing: -0.025em;
}

.title-input {
    font-weight: 700;
    letter-spacing: -0.025em;
}

input:focus,
select:focus,
[contenteditable]:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    border-color: var(--accent-blue);
}

@media (max-width: 768px) {
    .theme-options {
        grid-template-columns: repeat(2, 1fr);
    }

    .data-stats {
        grid-template-columns: 1fr;
    }

    .data-actions {
        flex-direction: column;
    }

    .data-actions .btn {
        min-width: auto;
    }
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-hover: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --border-light: #cbd5e1;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

[data-theme="blue"] {
    --bg-primary: #1e3a8a;
    --bg-secondary: #1e40af;
    --bg-tertiary: #1d4ed8;
    --bg-card: #2563eb;
    --bg-hover: #3b82f6;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --accent-blue: #60a5fa;
    --accent-purple: #a78bfa;
    --border-color: #3b82f6;
    --border-light: #60a5fa;
}

* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.subject-folder,
.note-item,
.btn,
.modal-content {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary:hover,
.btn-accent:hover {
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.3);
}

.note-content:empty:before {
    opacity: 0.7;
}

.btn {
    position: relative;
    overflow: hidden;
}

.btn:active::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: ripple 0.6s ease-out;
}

@keyframes ripple {
    to {
        width: 300px;
        height: 300px;
        opacity: 0;
    }
}

.modal.active {
    animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
    }

    to {
        opacity: 1;
        backdrop-filter: blur(2px);
    }
}

.save-indicator {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background: var(--accent-green);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.save-indicator.show {
    opacity: 1;
    transform: translateY(0);
}

.editor-toolbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
}

.note-content:focus {
    box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.3);
}

.stat-number {
    animation: countUp 0.8s ease-out;
}

@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-theme="light"] body {
    background: #ffffff;
}

[data-theme="light"] body::before {
    background-image:
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.02) 0%, transparent 50%);
}

[data-theme="blue"] body {
    background: #1e3a8a;
}

[data-theme="blue"] body::before {
    background-image:
        radial-gradient(circle at 20% 80%, rgba(96, 165, 250, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(167, 139, 250, 0.05) 0%, transparent 50%);
}

.connection-status {
    position: fixed;
    bottom: 1rem;
    left: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    z-index: 1000;
    opacity: 0;
    transition: all 0.3s ease;
}

.connection-status.online {
    background: var(--accent-green);
    color: white;
}

.connection-status.offline {
    background: var(--accent-red);
    color: white;
}

.connection-status.show {
    opacity: 1;
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media print {
    body::before {
        display: none;
    }

    .note-content {
        font-size: 12pt !important;
        line-height: 1.5 !important;
        color: black !important;
    }

    .note-header .title-input {
        font-size: 18pt !important;
        font-weight: bold !important;
        color: black !important;
    }
}

.btn,
.search-box input,
.subject-folder,
.note-type-select,
.form-group input,
.settings-select,
.modal-content {
    border-radius: 8px;
}

.view-toggles {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.search-section {
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.subjects-container {
    padding: 1rem;
}

.note-header {
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.subject-header:hover,
.note-item:hover {
    background: var(--bg-hover);
}

.subject-folder:hover,
.btn:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.subject-name,
.note-item h3 {
    font-weight: 500;
    letter-spacing: -0.01em;
}

.search-box input:focus,
.title-input:focus,
.form-group input:focus,
.settings-select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    outline: none;
}

.subject-icon {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

* {
    transition: background-color 0.2s ease,
        border-color 0.2s ease,
        color 0.2s ease,
        box-shadow 0.2s ease;
}

.note-item.active {
    background: rgba(59, 130, 246, 0.15);
    border-left: 3px solid var(--accent-blue);
}

.favorite-star {
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.note-content,
.subjects-container {
    will-change: scroll-position;
}

.modal {
    will-change: opacity, visibility;
}

@media (max-width: 480px) {
    .container {
        font-size: 14px;
    }

    .title-input {
        font-size: 1.5rem;
    }

    .note-content {
        padding: 1rem;
    }

    .editor-toolbar {
        padding: 0.75rem 1rem;
        gap: 0.25rem;
    }

    .toolbar-btn {
        width: 32px;
        height: 32px;
    }
}

[data-theme="dark"] .note-content {
    color: #f1f5f9;
}

[data-theme="dark"] .title-input {
    color: #f8fafc;
}

[data-theme="light"] .note-content {
    color: #1e293b;
}

[data-theme="light"] .title-input {
    color: #0f172a;
}

[data-theme="blue"] .note-content {
    color: #f1f5f9;
}

[data-theme="blue"] .title-input {
    color: #f8fafc;
}

body.loading {
    opacity: 0;
}

body {
    opacity: 1;
    transition: opacity 0.3s ease;
}

.container {
    min-height: 100vh;
}

.toast {
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
}

::selection {
    background: rgba(59, 130, 246, 0.2);
    color: var(--text-primary);
}

[data-theme="light"] ::-webkit-scrollbar-track {
    background: #f1f5f9;
}

[data-theme="light"] ::-webkit-scrollbar-thumb {
    background: #cbd5e1;
}

[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

[data-theme="blue"] ::-webkit-scrollbar-track {
    background: #1d4ed8;
}

[data-theme="blue"] ::-webkit-scrollbar-thumb {
    background: #3b82f6;
}

[data-theme="blue"] ::-webkit-scrollbar-thumb:hover {
    background: #60a5fa;
}

header {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-bottom: 2px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

header h1 {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.semester-info {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.sidebar {
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-tertiary));
    border-right: 2px solid var(--border-color);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.1);
}

.search-section {
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    border-bottom: 2px solid var(--border-color);
}

.view-toggles {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.view-btn.active {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    font-weight: 600;
}

.editor-area {
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

.note-header {
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    border-bottom: 2px solid var(--border-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.title-input {
    background: linear-gradient(135deg, transparent, rgba(59, 130, 246, 0.05));
    border-radius: 8px;
    padding: 0.5rem;
    transition: all 0.3s ease;
}

.title-input:focus {
    background: rgba(59, 130, 246, 0.1);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.editor-toolbar {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-tertiary));
    border-bottom: 2px solid var(--border-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.toolbar-btn {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.toolbar-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.toolbar-btn.active {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-color: var(--accent-blue);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    transform: translateY(-1px);
}
.note-content {
    background: linear-gradient(135deg, var(--bg-primary), rgba(59, 130, 246, 0.02));
    border-radius: 12px;
    margin: 1rem;
    border: 1px solid var(--border-color);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.05);
}

.subject-folder {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-tertiary));
    border: 2px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.subject-folder:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-blue);
}

.subject-header {
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
}

.subject-icon {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.note-item {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 8px;
    margin: 0.25rem;
}

.note-item:hover {
    background: var(--bg-hover);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.note-item.active {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.1));
    border-left: 4px solid var(--accent-blue);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.2);
}

.welcome-content {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-radius: 20px;
    border: 2px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
}

.welcome-content i {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.3));
}

.toast {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-tertiary));
    border: 2px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
}

::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 6px;
    border: 2px solid var(--bg-secondary);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

@keyframes slideInFromLeft {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInFromRight {
    from {
        transform: translateX(20px);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.sidebar {
    animation: slideInFromLeft 0.6s ease-out;
}

.editor-area {
    animation: slideInFromRight 0.6s ease-out;
}

.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--text-muted);
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 1rem;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {

    .theme-preview,
    .subject-icon,
    .note-type-icon {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

.favorites-section .section-header,
.recent-notes .section-header,
.search-results .section-header {
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.favorites-section>.note-item,
.recent-notes>.note-item,
.search-results>.note-item {
    margin: 0;
    border-radius: 0;
    border-bottom: 1px solid var(--border-color);
}

.favorites-section>.note-item:last-child,
.recent-notes>.note-item:last-child,
.search-results>.note-item:last-child {
    border-bottom: none;
}

.favorites-content,
.recent-content,
.search-content {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.favorites-section {
    position: relative;
}

.favorites-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-orange), #f59e0b);
}

.recent-notes::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
}

.search-results::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-green), #10b981);
}

.subjects-container>div {
    height: fit-content;
}

.favorites-section .note-item,
.recent-notes .note-item,
.search-results .note-item {
    padding: 1rem;
    transition: all 0.2s ease;
}

.favorites-section .note-item:hover,
.recent-notes .note-item:hover,
.search-results .note-item:hover {
    background: var(--bg-hover);
    transform: none;
}

.note-details {
    min-width: 0;
    overflow: hidden;
}

.note-details h3 {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.note-details p {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
    max-height: 2.8em;
}

.note-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.5rem;
    gap: 0.5rem;
}

.note-subject {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

.note-date {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
    flex-shrink: 0;
}

.subjects-container::-webkit-scrollbar {
    width: 8px;
}

.subjects-container::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

.subjects-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.subjects-container::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group:last-child {
    margin-bottom: 0;
}


.checkbox-label:active .checkmark {
    transform: scale(0.95);
}

@media (max-width: 768px) {
    .subjects-container {
        padding: 0.5rem;
    }

    .subject-folder.expanded .notes-list {
        max-height: 250px;
    }

    .favorites-section,
    .recent-notes,
    .search-results {
        margin: 0.25rem;
        border-radius: 6px;
    }

    .section-header {
        padding: 0.75rem;
        font-size: 0.85rem;
    }

    .note-item {
        padding: 0.75rem;
    }

    .note-details h3 {
        font-size: 0.85rem;
    }

    .note-details p {
        font-size: 0.75rem;
    }

    .note-meta-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .note-subject {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .sidebar {
        width: 100%;
        height: 40vh;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .main-content {
        flex-direction: column;
    }

    .subjects-container {
        max-height: calc(40vh - 120px);
    }

    .favorites-content,
    .recent-content,
    .search-content {
        max-height: calc(40vh - 160px);
    }
}

.view-btn:focus {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

.note-item:focus {
    outline: 2px solid var(--accent-blue);
    outline-offset: -2px;
}

.note-item {
    cursor: pointer;
}

.note-item:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: -2px;
}

.section-header {
    font-weight: 600;
    letter-spacing: 0.025em;
}

.note-type-icon {
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

.subjects-container>div {
    animation: fadeInUp 0.3s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.sidebar {
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.search-section {
    flex-shrink: 0;
}

.subjects-container {
    flex: 1;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.favorites-section,
.recent-notes,
.search-results {
    height: 100%;
    max-height: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.section-header {
    flex-shrink: 0;
    height: auto;
}

.favorites-content,
.recent-content,
.search-content {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.note-item {
    flex-shrink: 0;
}

.settings-section .checkbox-label {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    margin-bottom: 0.75rem;
}

.settings-section .checkbox-label:hover {
    border-color: var(--accent-blue);
}

.settings-section .checkmark {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    width: 18px;
    height: 18px;
}

.settings-section .checkbox-label input[type="checkbox"]:checked+.checkmark {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
}

.settings-section .checkbox-label input[type="checkbox"]:checked+.checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 11px;
    font-weight: bold;
}

.main-content {
    height: calc(100vh - 80px);
    overflow: hidden;
}

.favorites-section .note-item,
.recent-notes .note-item,
.search-results .note-item {
    word-wrap: break-word !important;
    word-break: break-word !important;
    overflow-wrap: break-word !important;
    hyphens: auto !important;
    box-sizing: border-box !important;
}

.favorites-section .note-item h3,
.recent-notes .note-item h3,
.search-results .note-item h3 {
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;

}

.favorites-section .note-item p,
.recent-notes .note-item p,
.search-results .note-item p {
    word-wrap: break-word !important;
    word-break: break-word !important;
    overflow-wrap: break-word !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 2 !important;
    -webkit-box-orient: vertical !important;
    overflow: hidden !important;
}

.favorites-section .note-item .note-date,
.recent-notes .note-item .note-date,
.search-results .note-item .note-date,
.favorites-section .note-item .note-type,
.recent-notes .note-item .note-type,
.search-results .note-item .note-type {
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
}

.favorites-section .note-details,
.recent-notes .note-details,
.search-results .note-details {
    min-width: 0 !important;
    overflow: hidden !important;
    flex: 1 !important;
}

.favorites-section .note-item *,
.recent-notes .note-item *,
.search-results .note-item * {
    max-width: 100% !important;
    box-sizing: border-box !important;
}

.search-results .note-item .highlight {
    word-break: break-word !important;
    overflow-wrap: break-word !important;
}

@media (max-width: 600px) {

    .favorites-section .note-item,
    .recent-notes .note-item,
    .search-results .note-item {
        padding: 0.75rem !important;
        font-size: 0.85rem !important;
    }

    .favorites-section .note-item h3,
    .recent-notes .note-item h3,
    .search-results .note-item h3 {
        font-size: 0.85rem !important;
    }

    .favorites-section .note-item p,
    .recent-notes .note-item p,
    .search-results .note-item p {
        font-size: 0.75rem !important;
        -webkit-line-clamp: 1 !important;
    }
}

.note-item-compact {
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-card);
    transition: all 0.2s ease;
    cursor: pointer;
}

.note-item-compact:hover {
    background: var(--bg-hover);
}

.note-item-compact.active {
    background: rgba(59, 130, 246, 0.1);
    border-left: 3px solid var(--accent-blue);
}

.note-item-compact.favorite {
    border-left: 3px solid var(--accent-orange);
}

.compact-note-header {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    gap: 0.75rem;
    min-height: 50px;
    justify-content: space-between;
}

.note-item-compact:not(.expanded) .compact-note-header {
    justify-content: center;
    gap: 1rem;
}

.note-type-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.note-title-compact {
    display: none;
    flex: 1;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.note-item-compact.expanded .note-title-compact {
    display: block;
}

.favorite-star {
    color: var(--accent-orange);
    font-size: 0.8rem;
    flex-shrink: 0;
}

.note-item-compact:not(.expanded) .favorite-star {
    display: none;
}

.expand-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.expand-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.expand-btn i {
    transition: transform 0.2s ease;
    font-size: 0.8rem;
}

.note-item-compact.expanded .expand-btn i {
    transform: rotate(180deg);
}

.note-details-expanded {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1rem;
}

.note-item-compact.expanded .note-details-expanded {
    max-height: 200px;
    padding: 0 1rem 1rem 1rem;
}

.note-preview {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0.5rem 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.note-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    margin-top: 0.5rem;
}

.note-subject {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 60%;
}

.note-date {
    color: var(--text-muted);
    white-space: nowrap;
}

.note-title-compact mark,
.note-preview mark {
    background: var(--accent-yellow);
    color: var(--text-primary);
    padding: 0.1em 0.2em;
    border-radius: 2px;
}

@media (max-width: 600px) {
    .compact-note-header {
        padding: 0.5rem 0.75rem;
        gap: 0.5rem;
        min-height: 44px;
    }

    .note-title-compact {
        font-size: 0.85rem;
    }

    .note-type-icon {
        width: 20px;
        height: 20px;
        font-size: 0.8rem;
    }

    .expand-btn {
        width: 24px;
        height: 24px;
    }

    .note-details-expanded {
        padding: 0 0.75rem;
    }

    .note-item-compact.expanded .note-details-expanded {
        padding: 0 0.75rem 0.75rem 0.75rem;
    }
}

.note-item-compact:not(.expanded) .note-type-icon {
    position: relative;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.note-item-compact:not(.expanded) .note-type-icon:hover {
    background: var(--bg-hover);
    transform: scale(1.1);
}

.note-item-compact:not(.expanded) .note-type-icon::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: -35px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    z-index: 1000;
}

.note-item-compact:not(.expanded) .note-type-icon:hover::after {
    opacity: 1;
}

.note-item-compact:not(.expanded) {
    border-radius: 8px;
    margin: 0.25rem;
}

.note-item-compact:not(.expanded) .compact-note-header {
    padding: 0.5rem;
    min-height: 40px;
}

.note-item-compact:not(.expanded).favorite .note-type-icon {
    border-color: var(--accent-orange);
    box-shadow: 0 0 0 1px var(--accent-orange);
}

.note-item-compact:not(.expanded).favorite .note-type-icon::before {
    content: '★';
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--accent-orange);
    color: white;
    font-size: 0.6rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}


/* UNQ Theme */
[data-theme="unq"] {
    --bg-primary: #1e1e2e;
    --bg-secondary: #2a2a3e;
    --bg-tertiary: #363650;
    --bg-card: #252538;
    --bg-hover: #2f2f45;
    --text-primary: #ffffff;
    --text-secondary: #c9c9d1;
    --text-muted: #9999a8;
    --accent-blue: #dc2626;
    --accent-purple: #b91c1c;
    --accent-green: #16a34a;
    --accent-orange: #ea580c;
    --accent-red: #dc2626;
    --accent-cyan: #0891b2;
    --accent-yellow: #ca8a04;
    --accent-focus: rgba(220, 38, 38, 0.1);
    --accent-shadow: rgba(220, 38, 38, 0.3);
    --border-color: #4a4a5e;
    --border-light: #5a5a70;
    --shadow: 0 4px 12px rgba(220, 38, 38, 0.15);
}

/* Forest Theme */
[data-theme="forest"] {
    --bg-primary: #0d1b0d;
    --bg-secondary: #1a2e1a;
    --bg-tertiary: #2d4a2d;
    --bg-card: #1e3a1e;
    --bg-hover: #2a4d2a;
    --text-primary: #e8f5e8;
    --text-secondary: #b8d4b8;
    --text-muted: #8fb08f;
    --accent-blue: #4caf50;
    --accent-purple: #8bc34a;
    --accent-green: #2e7d32;
    --accent-orange: #ff9800;
    --accent-red: #f44336;
    --accent-cyan: #00bcd4;
    --accent-yellow: #cddc39;
    --accent-focus: rgba(76, 175, 80, 0.1);
    --accent-shadow: rgba(76, 175, 80, 0.3);
    --border-color: #388e3c;
    --border-light: #4caf50;
    --shadow: 0 4px 12px rgba(76, 175, 80, 0.15);
}

/* Sunset Theme */
[data-theme="sunset"] {
    --bg-primary: #2d1b1b;
    --bg-secondary: #3d2626;
    --bg-tertiary: #4d3333;
    --bg-card: #3a2828;
    --bg-hover: #4a3535;
    --text-primary: #fff5f5;
    --text-secondary: #e8d4d4;
    --text-muted: #c4a8a8;
    --accent-blue: #ff6b6b;
    --accent-purple: #ff8cc8;
    --accent-green: #51cf66;
    --accent-orange: #ff922b;
    --accent-red: #ff6b6b;
    --accent-cyan: #74c0fc;
    --accent-yellow: #ffd43b;
    --accent-focus: rgba(255, 107, 107, 0.1);
    --accent-shadow: rgba(255, 107, 107, 0.3);
    --border-color: #8b4513;
    --border-light: #cd853f;
    --shadow: 0 4px 12px rgba(255, 107, 107, 0.15);
}

/* Ocean Theme */
[data-theme="ocean"] {
    --bg-primary: #0a1929;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1a2332;
    --bg-hover: #2a3441;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --accent-blue: #0ea5e9;
    --accent-purple: #8b5cf6;
    --accent-green: #06b6d4;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --accent-cyan: #22d3ee;
    --accent-yellow: #eab308;
    --accent-focus: rgba(14, 165, 233, 0.1);
    --accent-shadow: rgba(14, 165, 233, 0.3);
    --border-color: #1e40af;
    --border-light: #3b82f6;
    --shadow: 0 4px 12px rgba(14, 165, 233, 0.15);
}

/* Cyberpunk Theme */
[data-theme="cyberpunk"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a0a1a;
    --bg-tertiary: #2a1a2a;
    --bg-card: #1a1a1a;
    --bg-hover: #2a2a2a;
    --text-primary: #00ff41;
    --text-secondary: #00cc33;
    --text-muted: #009926;
    --accent-blue: #00ffff;
    --accent-purple: #ff00ff;
    --accent-green: #00ff41;
    --accent-orange: #ff9500;
    --accent-red: #ff0040;
    --accent-cyan: #00ffff;
    --accent-yellow: #ffff00;
    --accent-focus: rgba(0, 255, 255, 0.1);
    --accent-shadow: rgba(0, 255, 255, 0.3);
    --border-color: #333333;
    --border-light: #555555;
    --shadow: 0 4px 12px rgba(0, 255, 65, 0.25);
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-hover: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --accent-cyan: #06b6d4;
    --accent-yellow: #eab308;
    --accent-focus: rgba(59, 130, 246, 0.1);
    --accent-shadow: rgba(59, 130, 246, 0.3);
    --border-color: #e2e8f0;
    --border-light: #cbd5e1;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Blue Theme */
[data-theme="blue"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1a2332;
    --bg-hover: #2a3441;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --accent-blue: #3b82f6;
    --accent-purple: #6366f1;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --accent-cyan: #06b6d4;
    --accent-yellow: #eab308;
    --accent-focus: rgba(59, 130, 246, 0.1);
    --accent-shadow: rgba(59, 130, 246, 0.3);
    --border-color: #1e40af;
    --border-light: #3b82f6;
    --shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}

.theme-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.theme-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--bg-card);
}

.theme-option:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.theme-option.active {
    border-color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
}

.theme-preview {
    width: 60px;
    height: 40px;
    border-radius: 4px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.preview-header {
    height: 8px;
    width: 100%;
}

.preview-sidebar {
    position: absolute;
    left: 0;
    top: 8px;
    width: 20px;
    height: 32px;
}

.preview-content {
    position: absolute;
    right: 0;
    top: 8px;
    width: 40px;
    height: 32px;
}

.dark-preview {
    background: #1a1a1a;
}
.dark-preview .preview-header {
    background: #2d2d2d;
}
.dark-preview .preview-sidebar {
    background: #242424;
}
.dark-preview .preview-content {
    background: #1a1a1a;
}

.light-preview {
    background: #ffffff;
}
.light-preview .preview-header {
    background: #f8fafc;
}
.light-preview .preview-sidebar {
    background: #f1f5f9;
}
.light-preview .preview-content {
    background: #ffffff;
}

.blue-preview {
    background: #0f172a;
}
.blue-preview .preview-header {
    background: #1e293b;
}
.blue-preview .preview-sidebar {
    background: #334155;
}
.blue-preview .preview-content {
    background: #0f172a;
}

.unq-preview {
    background: #1e1e2e;
}
.unq-preview .preview-header {
    background: #dc2626;
}
.unq-preview .preview-sidebar {
    background: #252538;
}
.unq-preview .preview-content {
    background: #1e1e2e;
}

.forest-preview {
    background: #0d1b0d;
}
.forest-preview .preview-header {
    background: #2e7d32;
}
.forest-preview .preview-sidebar {
    background: #1a2e1a;
}
.forest-preview .preview-content {
    background: #0d1b0d;
}

.sunset-preview {
    background: #2d1b1b;
}
.sunset-preview .preview-header {
    background: #ff6b6b;
}
.sunset-preview .preview-sidebar {
    background: #3d2626;
}
.sunset-preview .preview-content {
    background: #2d1b1b;
}

.ocean-preview {
    background: #0a1929;
}
.ocean-preview .preview-header {
    background: #0ea5e9;
}
.ocean-preview .preview-sidebar {
    background: #1e293b;
}
.ocean-preview .preview-content {
    background: #0a1929;
}

.cyberpunk-preview {
    background: #0a0a0a;
}
.cyberpunk-preview .preview-header {
    background: #00ff41;
}
.cyberpunk-preview .preview-sidebar {
    background: #1a0a1a;
}
.cyberpunk-preview .preview-content {
    background: #0a0a0a;
}

.theme-option span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
}

@media (max-width: 600px) {
    .theme-options {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    
    .theme-option {
        padding: 0.75rem;
    }
    
    .theme-preview {
        width: 50px;
        height: 35px;
    }
    
    .theme-option span {
        font-size: 0.8rem;
    }
}
.search-box input:focus,
.form-group input:focus,
.settings-select:focus,
[contenteditable]:focus {
    box-shadow: 0 0 0 3px var(--accent-focus) !important;
}

.toolbar-btn:hover {
    box-shadow: 0 4px 12px var(--accent-shadow) !important;
}

.toolbar-btn.active {
    box-shadow: 0 4px 12px var(--accent-shadow) !important;
}

.theme-option.active {
    background: var(--accent-focus) !important;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--accent-blue) !important;
    border-color: var(--accent-blue) !important;
}

.settings-section .checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--accent-blue) !important;
    border-color: var(--accent-blue) !important;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple)) !important;
    box-shadow: 0 2px 4px var(--accent-shadow) !important;
}

.btn-primary:hover {
    box-shadow: 0 4px 8px var(--accent-shadow) !important;
}

.view-btn.active {
    background: var(--accent-blue) !important;
    box-shadow: 0 2px 4px var(--accent-shadow) !important;
}

.note-item.active,
.note-item-compact.active {
    background: var(--accent-focus) !important;
    border-left: 3px solid var(--accent-blue) !important;
}