/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light theme colors */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #06b6d4;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    --background-color: #ffffff;
    --background-secondary: #f8fafc;
    --surface-color: #ffffff;
    --surface-hover: #f1f5f9;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* Dark theme colors */
    --background-color: #0f172a;
    --background-secondary: #1e293b;
    --surface-color: #1e293b;
    --surface-hover: #334155;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border-color: #334155;
    --border-light: #475569;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-color);
    transition: var(--transition);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--surface-color);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-brand i {
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: 0;
    left: 0;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle, .user-profile {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.theme-toggle {
    background: var(--surface-color);
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.user-profile {
    background: var(--gradient-primary);
    color: white;
    border: none;
    font-size: 1.5rem;
}

.user-profile:hover {
    transform: scale(1.05);
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    min-height: 100vh;
    padding: 120px 2rem 4rem;
    background: linear-gradient(135deg, var(--background-color) 0%, var(--background-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(3deg); }
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.cta-button {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-lg);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

.time-circle {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 4s ease-in-out infinite;
    box-shadow: var(--shadow-xl);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.time-display {
    width: 250px;
    height: 250px;
    background: var(--surface-color);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow: inset var(--shadow);
}

#current-time {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.time-display small {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Daily Planner */
.daily-planner {
    padding: 4rem 0;
    background: var(--background-color);
}

.daily-planner h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.task-input-section {
    margin-bottom: 3rem;
}

.input-card {
    background: var(--surface-color);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.input-card h3 {
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.5rem;
}

.task-input-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#task-input {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
    resize: vertical;
    min-height: 60px;
}

#task-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.input-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.priority-select, #task-duration {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.priority-select:focus, #task-duration:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.add-task-btn {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.add-task-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* Quick Templates */
.quick-templates {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-light);
}

.quick-templates h4 {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.template-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.template-btn {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Tasks List */
.tasks-list-section {
    margin-bottom: 3rem;
}

.tasks-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.tasks-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.action-btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.action-btn.primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

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

.action-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.action-btn.primary:hover {
    box-shadow: var(--shadow-lg);
}

.tasks-list {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.empty-state {
    padding: 3rem;
    text-align: center;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.task-item {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
    cursor: pointer;
}

.task-item:hover {
    background: var(--surface-hover);
}

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

.task-checkbox {
    margin-right: 1rem;
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.task-content {
    flex: 1;
}

.task-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.task-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    gap: 1rem;
    align-items: center;
}

.priority-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.priority-high {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.priority-medium {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.priority-low {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.task-actions {
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    transition: var(--transition);
}

.task-item:hover .task-actions {
    opacity: 1;
}

.task-action-btn {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.task-action-btn.edit {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
}

.task-action-btn.delete {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.task-action-btn:hover {
    transform: scale(1.1);
}

/* Schedule Section */
.schedule-section {
    margin-top: 3rem;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.schedule-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.schedule-header h3 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

.schedule-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.schedule-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.schedule-display {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.schedule-day {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
}

.schedule-day:last-child {
    border-bottom: none;
}

.schedule-day-header {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.schedule-slots {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.schedule-slot {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--background-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-light);
}

.slot-time {
    font-weight: 600;
    color: var(--primary-color);
    min-width: 80px;
    font-size: 0.9rem;
}

.slot-task {
    flex: 1;
    color: var(--text-primary);
}

.slot-duration {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Goals Section */
.goals-section {
    padding: 4rem 0;
    background: var(--background-secondary);
}

.goals-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.goal-input-card {
    background: var(--surface-color);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 3rem;
}

.goal-input-card h3 {
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.5rem;
}

.goal-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

#goal-title {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

#goal-title:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.goal-details {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.goal-date, .goal-category {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.goal-date:focus, .goal-category:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.add-goal-btn {
    background: var(--gradient-secondary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.add-goal-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* Goals List */
.goals-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.empty-goals-state {
    grid-column: 1 / -1;
    padding: 3rem;
    text-align: center;
    color: var(--text-muted);
}

.empty-goals-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.goal-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.goal-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.goal-header {
    display: flex;
    justify-content: between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.goal-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.goal-category {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 600;
}

.goal-progress {
    margin: 1.5rem 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-light);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.goal-deadline {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 1rem;
}

/* Analytics Section */
.analytics-section {
    padding: 4rem 0;
    background: var(--background-color);
}

.analytics-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.stat-info p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Charts */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.chart-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.chart-card h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

/* Tips Section */
.tips-section {
    padding: 4rem 0;
    background: var(--background-secondary);
}

.tips-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.tip-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
}

.tip-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.tip-card.featured {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.tip-card.featured .tip-content {
    color: white;
}

.tip-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.5rem;
    margin: 0 auto 1.5rem;
}

.tip-card.featured .tip-icon {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.tip-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
}

.tip-card.featured h3 {
    color: white;
}

.tip-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Time Tips */
.time-tips-section {
    margin-top: 3rem;
}

.time-tips-section h3 {
    text-align: center;
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.time-tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.time-tip {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.time-tip-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.time-tip-content h4 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.time-tip-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    padding: 2rem 2rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-light);
}

.modal-header h3 {
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    padding: 1rem 2rem 2rem;
    display: flex;
    justify-content: flex-end;
}

.setting-group {
    margin-bottom: 2rem;
}

.setting-group h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.time-inputs {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.time-inputs label {
    font-weight: 500;
    color: var(--text-secondary);
}

.time-inputs input {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
}

.break-duration {
    margin-top: 1rem;
    display: flex;
    gap: 1rem;
    align-items: center;
}

.break-duration select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--text-primary);
}

.setting-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-light);
    margin-bottom: 1rem;
}

.footer-brand i {
    font-size: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--primary-light);
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
    color: #cbd5e1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #475569;
    color: #94a3b8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        padding: 1rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 1rem 2rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-visual {
        margin-top: 2rem;
    }
    
    .time-circle {
        width: 250px;
        height: 250px;
    }
    
    .time-display {
        width: 200px;
        height: 200px;
    }
    
    #current-time {
        font-size: 2rem;
    }
    
    .input-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .template-buttons {
        flex-direction: column;
    }
    
    .tasks-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .list-actions {
        justify-content: stretch;
    }
    
    .schedule-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .schedule-actions {
        justify-content: stretch;
    }
    
    .goal-details {
        flex-direction: column;
        align-items: stretch;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
    }
    
    .charts-container {
        grid-template-columns: 1fr;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .time-tips-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .input-card,
    .goal-input-card,
    .stat-card,
    .tip-card,
    .time-tip {
        padding: 1.5rem;
    }
    
    .task-item {
        padding: 1rem;
    }
    
    .schedule-slot {
        padding: 0.75rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .slot-time {
        min-width: auto;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

/* Loading states */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

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

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

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

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