/* CSS Custom Properties for Theme Management */
:root {
    /* Light Theme Base */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.1);
    
    /* Default Blue Theme */
    --theme-primary: #007bff;
    --theme-secondary: #6610f2;
    --theme-light: #cce7ff;
    --theme-dark: #0056b3;
    --theme-gradient: linear-gradient(135deg, #007bff, #6610f2);
    --theme-primary-rgb: 0, 123, 255;
    --theme-secondary-rgb: 102, 16, 242;
    
    /* Common Colors */
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Typography */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    
    /* Transitions */
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3d3d3d;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #999999;
    --border-color: #4d4d4d;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

/* Color Themes */
[data-color="blue"] {
    --theme-primary: #007bff;
    --theme-secondary: #6610f2;
    --theme-light: #cce7ff;
    --theme-dark: #0056b3;
    --theme-gradient: linear-gradient(135deg, #007bff, #6610f2);
    --theme-primary-rgb: 0, 123, 255;
    --theme-secondary-rgb: 102, 16, 242;
}

[data-color="green"] {
    --theme-primary: #28a745;
    --theme-secondary: #20c997;
    --theme-light: #d4edda;
    --theme-dark: #1e7e34;
    --theme-gradient: linear-gradient(135deg, #28a745, #20c997);
    --theme-primary-rgb: 40, 167, 69;
    --theme-secondary-rgb: 32, 201, 151;
}

[data-color="red"] {
    --theme-primary: #e74c3c;
    --theme-secondary: #c0392b;
    --theme-light: #fadbd8;
    --theme-dark: #922b21;
    --theme-gradient: linear-gradient(135deg, #e74c3c, #c0392b);
    --theme-primary-rgb: 231, 76, 60;
    --theme-secondary-rgb: 192, 57, 43;
}

[data-color="yellow"] {
    --theme-primary: #f1c40f;
    --theme-secondary: #f39c12;
    --theme-light: #fcf3cf;
    --theme-dark: #b7950b;
    --theme-gradient: linear-gradient(135deg, #f1c40f, #f39c12);
    --theme-primary-rgb: 241, 196, 15;
    --theme-secondary-rgb: 243, 156, 18;
}

/* Custom Cursor */
* {
    cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M12 2L22 22L12 18L2 22Z" fill="%23800080" stroke="%23ffffff" stroke-width="2" transform="rotate(315 12 12)"/></svg>'), auto;
}

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

/* Prevent horizontal scrolling on mobile */
html, body {
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: var(--transition-base);
    min-height: 100vh;
    position: relative;
}

/* Light mode background effects */
body[data-theme="light"] {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--theme-light) 100%) !important;
    background-attachment: fixed;
}

body[data-theme="light"]::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 80%, var(--theme-light) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, var(--theme-light) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
    opacity: 0.6;
}

/* Dark mode clean background */
body[data-theme="dark"] {
    background: var(--bg-primary) !important;
}

body[data-theme="dark"]::before {
    display: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    min-height: 100vh;
}

/* Header Styles */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
}

.nav-tabs {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-tab {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 8px;
    transition: var(--transition-base);
    font-size: var(--font-size-base);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-tab:hover {
    background: var(--theme-light);
    color: var(--theme-primary);
    transform: translateY(-2px);
}

.nav-tab.active {
    background: var(--theme-gradient);
    color: white;
    box-shadow: 0 4px 12px var(--shadow-color);
}

.theme-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.theme-btn {
    padding: var(--spacing-md);
    border: none;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: 50%;
    
    transition: var(--transition-base);
    font-size: var(--font-size-lg);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-btn:hover {
    background: var(--theme-primary);
    color: white;
    transform: scale(1.1);
}

.color-selector {
    display: flex;
    gap: var(--spacing-sm);
}

.color-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 3px solid transparent;
    
    transition: var(--transition-base);
}

.color-btn[data-color="blue"] {
    background: linear-gradient(135deg, #007bff, #6610f2);
}

.color-btn[data-color="green"] {
    background: linear-gradient(135deg, #28a745, #20c997);
}

.color-btn[data-color="red"] {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.color-btn[data-color="yellow"] {
    background: linear-gradient(135deg, #f1c40f, #f39c12);
}

.color-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.color-btn.active {
    border-color: var(--text-primary);
    transform: scale(1.1);
}

/* Date Selector Styles */
.date-selector {
    display: none;
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 12px;
    margin-bottom: var(--spacing-xl);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.date-selector.active {
    display: block;
}

.date-navigation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
}

.date-nav-btn {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    
    transition: var(--transition-base);
    color: var(--text-secondary);
}

.date-nav-btn:hover {
    background: var(--theme-primary);
    color: white;
    border-color: var(--theme-primary);
}

.date-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.date-input {
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    
}

.date-input:focus {
    outline: none;
    border-color: var(--theme-primary);
    box-shadow: 0 0 0 3px var(--theme-light);
}

.today-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--theme-primary);
    border-radius: 8px;
    background: transparent;
    color: var(--theme-primary);
    
    transition: var(--transition-base);
    font-weight: 500;
}

.today-btn:hover {
    background: var(--theme-primary);
    color: white;
}

/* Section Styles */
.section {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.section-header h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

/* Button Styles */
.btn-primary,
.btn-secondary,
.btn-danger {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: 8px;
    
    transition: var(--transition-base);
    font-size: var(--font-size-base);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-primary {
    background: var(--theme-gradient);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--shadow-color);
}

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

.btn-secondary:hover {
    background: var(--theme-light);
    color: var(--theme-primary);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #c82333;
    transform: translateY(-2px);
}

/* To-Do List Styles */
.add-task-form {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: 12px;
    margin-bottom: var(--spacing-xl);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.add-task-form input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: var(--font-size-base);
    background: var(--bg-primary);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    transition: var(--transition-base);
}

.add-task-form input:focus {
    outline: none;
    border-color: var(--theme-primary);
    box-shadow: 0 0 0 3px var(--theme-light);
}

.task-options {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.task-options select {
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    
}

.tasks-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.task-list {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.task-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.task-list-header h3 {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
}

.task-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
}

.task-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.task-item.removing {
    opacity: 0;
    transform: translateX(-100%);
}

.task-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    
    accent-color: var(--theme-primary);
}

.task-content {
    flex: 1;
}

.task-text {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.task-text.completed {
    text-decoration: line-through;
    color: var(--text-muted);
}

.task-schedule {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    background: var(--theme-light);
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
}

.task-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.task-delete {
    background: none;
    border: none;
    color: var(--danger);
    
    padding: var(--spacing-xs);
    border-radius: 4px;
    transition: var(--transition-base);
}

.task-delete:hover {
    background: var(--danger);
    color: white;
}

.no-tasks {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-xl);
    font-style: italic;
}

/* Notes Styles */
.notes-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-xl);
    height: 70vh;
}

.notes-sidebar {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: var(--spacing-lg);
    box-shadow: 0 4px 12px var(--shadow-color);
    display: flex;
    flex-direction: column;
}

.notes-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.notes-list {
    flex: 1;
    overflow-y: auto;
}

.note-item {
    background: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
}

.note-item:hover {
    background: var(--theme-light);
    transform: translateY(-2px);
}

.note-item.active {
    background: var(--theme-primary);
    color: white;
}

.note-title {
    font-weight: 600;
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
}

.note-preview {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.note-item.active .note-preview {
    color: rgba(255, 255, 255, 0.8);
}

.note-date {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.note-item.active .note-date {
    color: rgba(255, 255, 255, 0.8);
}

.notes-editor {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: 0 4px 12px var(--shadow-color);
    display: flex;
    flex-direction: column;
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.editor-header input {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-right: var(--spacing-lg);
}

.editor-header input:focus {
    outline: none;
    border-color: var(--theme-primary);
    box-shadow: 0 0 0 3px var(--theme-light);
}

.editor-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.editor-actions button {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

#noteContent {
    flex: 1;
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    line-height: 1.6;
    resize: none;
    min-height: 400px;
}

#noteContent:focus {
    outline: none;
    border-color: var(--theme-primary);
    box-shadow: 0 0 0 3px var(--theme-light);
}

.no-notes {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-xl);
    font-style: italic;
}

/* Schedule Styles */
.schedule-overview {
    margin-bottom: var(--spacing-xl);
}

.overview-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.overview-card {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: 0 4px 12px var(--shadow-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: var(--transition-base);
}

.overview-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--shadow-color);
}

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: white;
}

.card-icon.pending {
    background: var(--warning);
}

.card-icon.completed {
    background: var(--success);
}

.card-icon.total {
    background: var(--info);
}

.card-content h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.card-content p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.progress-section {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: 0 4px 12px var(--shadow-color);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.progress-header h3 {
    color: var(--text-primary);
    font-size: var(--font-size-lg);
}

.progress-header span {
    color: var(--theme-primary);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.progress-bar {
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--theme-gradient);
    border-radius: 6px;
    transition: width 0.5s ease;
    width: 0%;
}

.schedule-table {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.table-header h3 {
    color: var(--text-primary);
    font-size: var(--font-size-xl);
}

.time-slots-container {
    max-height: 60vh;
    overflow-y: auto;
}

.time-slots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.time-slot {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-md);
    
    transition: var(--transition-base);
    min-height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.time-slot:hover {
    background: var(--theme-light);
    border-color: var(--theme-primary);
    transform: translateY(-2px);
}

.time-slot.occupied {
    background: var(--theme-light);
    border-color: var(--theme-primary);
}

.time-slot.occupied .time-slot-time {
    color: var(--text-primary);
    font-weight: 700;
}

.time-slot.occupied .time-slot-task {
    color: var(--text-primary);
    font-weight: 500;
}

/* Ensure better contrast for occupied slots in dark mode */
[data-theme="dark"] .time-slot.occupied {
    background: var(--bg-tertiary);
    border-color: var(--theme-primary);
}

[data-theme="dark"] .time-slot.occupied .time-slot-time,
[data-theme="dark"] .time-slot.occupied .time-slot-task {
    color: var(--text-primary);
}

.time-slot.completed {
    background: var(--success);
    border-color: var(--success);
    color: white;
}

.time-slot.completed:hover {
    background: #1e7e34;
}

.time-slot-time {
    font-weight: 600;
    font-size: var(--font-size-base);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.time-slot.completed .time-slot-time {
    color: white;
}

.time-slot-task {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.time-slot.completed .time-slot-task {
    color: rgba(255, 255, 255, 0.9);
}

.time-slot-priority {
    font-size: var(--font-size-sm);
    padding: 2px 6px;
    border-radius: 4px;
    display: inline-block;
    width: fit-content;
}

.priority-high {
    background: var(--danger);
    color: white;
}

.priority-medium {
    background: var(--warning);
    color: white;
}

.priority-low {
    background: var(--success);
    color: white;
}

.time-slot-actions {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-xs);
    opacity: 0;
    transition: var(--transition-base);
}

.time-slot:hover .time-slot-actions {
    opacity: 1;
}

.slot-action-btn {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 4px;
    padding: var(--spacing-xs);
    
    transition: var(--transition-base);
    font-size: var(--font-size-sm);
}

.slot-action-btn:hover {
    background: white;
    transform: scale(1.1);
}

.slot-action-btn.edit {
    color: var(--theme-primary);
}

.slot-action-btn.delete {
    color: var(--danger);
}

.slot-action-btn.complete {
    color: var(--success);
}

.empty-slot {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 12px;
    box-shadow: 0 8px 32px var(--shadow-color);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.modal-header h2 {
    color: var(--text-primary);
    font-size: var(--font-size-xl);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    
    color: var(--text-secondary);
    padding: var(--spacing-sm);
    border-radius: 50%;
    transition: var(--transition-base);
}

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

.modal-body {
    padding: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--theme-primary);
    box-shadow: 0 0 0 3px var(--theme-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-lg);
}

.form-actions button {
    padding: var(--spacing-md) var(--spacing-lg);
}

/* Footer Styles */
.footer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
    border-top: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--theme-gradient);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    text-align: center;
}

.footer-content p {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.footer-content strong {
    color: var(--theme-primary);
    font-weight: 700;
    background: var(--theme-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.footer-links span {
    white-space: nowrap;
}

/* Responsive Footer */
@media (max-width: 480px) {
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .footer-links span:nth-child(2) {
        display: none;
    }
}

/* Print Styles */
@media print {
    .header,
    .add-task-form,
    .task-actions,
    .editor-actions,
    .footer {
        display: none;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .task-item {
        break-inside: avoid;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .header {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .nav-tabs {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .theme-controls {
        flex-direction: row;
        gap: var(--spacing-md);
    }
    
    .tasks-container {
        grid-template-columns: 1fr;
    }
    
    .notes-container {
        grid-template-columns: 1fr;
        height: auto;
        gap: var(--spacing-md);
    }
    
    .notes-sidebar {
        order: 2;
        height: auto;
        min-height: 200px;
    }
    
    .notes-editor {
        order: 1;
        margin-bottom: var(--spacing-lg);
        min-height: 300px;
    }
    
    .notes-list {
        max-height: 200px;
        overflow-y: auto;
    }
    
    #noteContent {
        min-height: 200px;
        font-size: 16px; /* Prevent zoom on iOS */
        resize: vertical;
    }
    
    .overview-cards {
        grid-template-columns: 1fr;
    }
    
    .time-slots {
        grid-template-columns: 1fr;
    }
    
    .date-navigation {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .nav-tab {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .task-options {
        flex-direction: column;
        align-items: stretch;
    }
    
    .task-options select,
    .task-options button {
        width: 100%;
    }
    
    /* Prevent zoom on iOS for all inputs */
    input, textarea, select {
        font-size: 16px !important;
    }
    
    .editor-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: stretch;
    }
    
    .editor-header input {
        margin-right: 0;
        font-size: 16px; /* Prevent zoom on iOS */
    }
    
    .editor-actions {
        justify-content: center;
    }
    
    .table-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: stretch;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--theme-dark);
}

/* Animations */
@keyframes slideIn {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

.task-item {
    animation: slideIn 0.3s ease-out;
}

.task-item.removing {
    animation: slideOut 0.3s ease-out;
}