:root {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-surface-light: #334155;
    --color-primary: #f59e0b;
    --color-primary-light: #fbbf24;
    --color-success: #10b981;
    --color-text: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-border: #334155;
    
    --font-display: 'Crimson Pro', serif;
    --font-body: 'DM Sans', sans-serif;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    
    --radius: 16px;
    --spacing: 1.5rem;
}

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

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    background-image: 
        radial-gradient(at 0% 0%, rgba(245, 158, 11, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.6s ease-out;
    position: relative;
}

.header-content {
    margin-bottom: 1.5rem;
}

.header-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 0;
}

.btn-settings {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.btn-settings:hover {
    background: var(--color-surface-light);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

.logo {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.tagline {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    font-weight: 400;
    font-style: italic;
}

.date-display {
    padding: 0.75rem 1.5rem;
    background: var(--color-surface);
    border-radius: var(--radius);
    display: inline-block;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.85rem;
    border: 1px solid var(--color-border);
}
    border: 1px solid var(--color-border);
}

/* Stats Bar */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease-out 0.2s backwards;
}

.stat-card {
    background: var(--color-surface);
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-display);
    margin-bottom: 0.25rem;
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Add Habit Section */
.add-habit-section {
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease-out 0.3s backwards;
}

.btn-add-habit {
    width: 100%;
    padding: 1.25rem;
    background: var(--color-surface);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-body);
}

.btn-add-habit:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-icon {
    font-size: 1.5rem;
    line-height: 1;
}

/* Add Habit Form */
.add-habit-form {
    background: var(--color-surface);
    padding: 2rem;
    border-radius: var(--radius);
    margin-bottom: 2rem;
    border: 1px solid var(--color-border);
    animation: slideDown 0.4s ease-out;
}

.add-habit-form h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
}

.input-field {
    width: 100%;
    padding: 1rem;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    color: var(--color-text);
    font-size: 1rem;
    font-family: var(--font-body);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.form-hint {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.icon-selector {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.5rem;
}

/* Tracking Type Selector */
.tracking-type-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.tracking-type-btn {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
}

.tracking-type-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-light);
}

.tracking-type-btn.active {
    border-color: var(--color-primary);
    background: rgba(245, 158, 11, 0.1);
}

.tracking-icon {
    font-size: 1.5rem;
}

.tracking-label {
    font-weight: 600;
    font-size: 0.9rem;
}

.tracking-desc {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.tracking-options {
    animation: slideDown 0.3s ease-out;
}

/* Color Picker */
.color-picker {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.color-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 3px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

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

.color-btn.active {
    border-color: var(--color-text);
    box-shadow: 0 0 0 2px var(--color-bg);
}

.color-btn.active::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
    text-shadow: 0 0 3px rgba(0,0,0,0.5);
}

.icon-btn {
    padding: 0.75rem;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.icon-btn.selected {
    background: var(--color-primary);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

.category-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.category-btn {
    padding: 0.75rem;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-text);
    font-family: var(--font-body);
}

.category-btn:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
}

.category-btn.selected {
    border-width: 3px;
    transform: scale(1.05);
}

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

.habit-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.25rem;
}

.btn-edit {
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-light);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-edit:hover {
    background: var(--color-primary);
    color: var(--color-bg);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-primary,
.btn-secondary {
    flex: 1;
    padding: 1rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-body);
}

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

.btn-primary:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

/* Habits Section */
.habits-section {
    margin-bottom: 3rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.habits-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.habit-card {
    background: var(--color-surface);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
    animation: fadeInUp 0.4s ease-out backwards;
}

.habit-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.habit-card.completed {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0.05) 100%);
    border-color: var(--color-success);
}

.habit-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border-radius: 12px;
    flex-shrink: 0;
}

.habit-info {
    flex: 1;
}

.habit-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.habit-streak {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.habit-streak.active {
    color: var(--color-primary);
    font-weight: 600;
}

.habit-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-check,
.btn-delete {
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 12px;
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.btn-check:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.btn-check.checked {
    background: var(--color-bg);
    border: 2px solid var(--color-success);
    color: var(--color-success);
}

.btn-delete {
    background: var(--color-surface-light);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

.btn-delete:hover {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    animation: fadeIn 0.6s ease-out;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--color-text-muted);
}

/* Weekly Calendar */
.calendar-section {
    margin-bottom: 3rem;
    animation: fadeInUp 0.6s ease-out 0.4s backwards;
}

.weekly-calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
}

.day-column {
    background: var(--color-surface);
    padding: 1rem 0.5rem;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    text-align: center;
}

.day-name {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.day-date {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.day-column.today .day-date {
    color: var(--color-primary);
}

.day-habits {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.habit-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-border);
    margin: 0 auto;
}

.habit-dot.completed {
    background: var(--color-success);
}

/* Progress Bars */
.habit-progress {
    margin-top: 0.75rem;
}

.progress-label {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: var(--color-border);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 10px;
    transition: width 0.5s ease;
    position: relative;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-percentage {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

.quick-add-buttons-inline {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.btn-quick-add-inline {
    padding: 0.4rem 0.75rem;
    background: var(--color-surface-light);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 600;
}

.btn-quick-add-inline:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-bg);
}

/* Monthly View */
.monthly-section {
    margin-top: 3rem;
    animation: fadeInUp 0.6s ease-out 0.5s backwards;
}

.monthly-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.month-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-month-nav {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    width: 36px;
    height: 36px;
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-month-nav:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-bg);
}

.current-month {
    font-weight: 600;
    font-size: 1.1rem;
    min-width: 150px;
    text-align: center;
}

.monthly-view {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.habit-monthly-card {
    background: var(--color-surface);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.habit-monthly-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.habit-monthly-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.habit-monthly-icon {
    font-size: 1.5rem;
}

.habit-monthly-name {
    font-size: 1.2rem;
    font-weight: 600;
}

.habit-monthly-stats {
    display: flex;
    gap: 1.5rem;
    font-size: 0.9rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-primary);
}

.stat-label {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Heatmap Grid */
.heatmap-container {
    overflow-x: auto;
}

.heatmap-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    min-width: 300px;
}

.heatmap-day-label {
    text-align: center;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-muted);
    padding: 0.25rem;
}

.heatmap-box {
    aspect-ratio: 1;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
}

.heatmap-box:hover {
    transform: scale(1.1);
    z-index: 10;
    box-shadow: var(--shadow-md);
}

.heatmap-box.empty {
    background: var(--color-surface-light);
}

.heatmap-box.future {
    background: var(--color-bg);
    opacity: 0.3;
    cursor: not-allowed;
}

.heatmap-box.today {
    border: 2px solid var(--color-primary);
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
}

/* Tooltip for heatmap */
.heatmap-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-bg);
    color: var(--color-text);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 100;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    margin-bottom: 0.5rem;
}

.heatmap-box:hover .heatmap-tooltip {
    opacity: 1;
}

.heatmap-legend {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.85rem;
}

.legend-label {
    color: var(--color-text-muted);
}

.legend-boxes {
    display: flex;
    gap: 0.25rem;
}

.legend-box {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    border: 1px solid var(--color-border);
}

/* Install Prompt */
.install-prompt {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    max-width: 500px;
    width: calc(100% - 2rem);
    z-index: 1000;
    animation: slideUp 0.4s ease-out;
}

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

.install-content span {
    flex: 1;
    font-size: 0.9rem;
}

.btn-install {
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: var(--color-bg);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem;
    line-height: 1;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }
    to {
        opacity: 1;
        max-height: 500px;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translate(-50%, 20px);
    }
    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease-out;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--color-surface);
    border-radius: var(--radius);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    animation: slideUp 0.4s ease-out;
}

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

.modal-header h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-primary);
    margin: 0;
}

.btn-close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-muted);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-close-modal:hover {
    background: var(--color-surface-light);
    color: var(--color-text);
}

/* Settings Sections */
.settings-section {
    padding: 2rem;
    border-bottom: 1px solid var(--color-border);
}

.settings-section:last-child {
    border-bottom: none;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
}

.setting-info {
    flex: 1;
}

.setting-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.setting-info p {
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.setting-info small {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.feature-list {
    list-style: none;
    margin-top: 0.75rem;
}

.feature-list li {
    color: var(--color-text-muted);
    padding: 0.25rem 0;
    font-size: 0.9rem;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 60px;
    height: 32px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-surface-light);
    border: 2px solid var(--color-border);
    border-radius: 32px;
    transition: all 0.3s ease;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background: var(--color-text-muted);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(28px);
    background: var(--color-bg);
}

/* Support Section */
.support-section {
    text-align: center;
}

.support-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.btn-support {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--color-primary);
    color: var(--color-bg);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    margin: 1rem 0;
    transition: all 0.3s ease;
}

.btn-support:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.support-note {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-style: italic;
    margin-top: 0.5rem;
}

/* Settings Footer */
.settings-footer {
    text-align: center;
    padding: 1.5rem 2rem;
    background: var(--color-bg);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.settings-footer p {
    margin: 0.25rem 0;
}

.version {
    font-size: 0.75rem;
    opacity: 0.7;
}

/* Focus Mode Banner */
.focus-mode-banner {
    position: sticky;
    top: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-bg);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    animation: slideDown 0.4s ease-out;
}

.btn-exit-focus {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-exit-focus:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Celebration Overlay */
.celebration-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.3s ease-out;
}

.celebration-content {
    text-align: center;
    animation: celebrationPop 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.celebration-emoji {
    font-size: 8rem;
    margin-bottom: 1rem;
    animation: spin 0.8s ease-in-out;
}

.celebration-message {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-primary);
    text-shadow: 0 2px 20px rgba(245, 158, 11, 0.5);
}

/* ADHD Mode Specific Styles */
.adhd-mode .habit-card {
    border-width: 3px;
    box-shadow: var(--shadow-md);
}

.adhd-mode .btn-check {
    transform: scale(1.1);
}

/* Animations */
@keyframes celebrationPop {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    50% {
        transform: scale(1.2) rotate(10deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

@keyframes spin {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-15deg);
    }
    75% {
        transform: rotate(15deg);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .logo {
        font-size: 2.5rem;
    }
    
    .stats-bar {
        grid-template-columns: 1fr;
    }
    
    .icon-selector {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .category-selector {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .weekly-calendar {
        gap: 0.25rem;
    }
    
    .day-column {
        padding: 0.75rem 0.25rem;
    }
    
    .day-name {
        font-size: 0.65rem;
    }
    
    .day-date {
        font-size: 1rem;
    }
}


/* Tracking Modal Specific Styles */
.tracking-modal-content {
    max-width: 500px;
}

.tracking-modal-body {
    padding: 2rem;
}

.habit-info-display {
    text-align: center;
    margin-bottom: 2rem;
}

.habit-icon-large {
    font-size: 3rem;
    display: block;
    margin-bottom: 0.5rem;
}

.tracking-progress {
    background: var(--color-bg);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.tracking-progress .progress-label {
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.tracking-progress .progress-bar-container {
    height: 12px;
    margin-bottom: 0.75rem;
}

.tracking-progress .progress-percentage {
    text-align: center;
    font-size: 1rem;
}

.quick-add-section {
    margin-bottom: 1.5rem;
}

.quick-add-section label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.quick-add-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.btn-quick-add {
    padding: 1rem;
    background: var(--color-surface-light);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-quick-add:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-bg);
    transform: translateY(-2px);
}

.custom-amount-section {
    background: var(--color-bg);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    animation: slideDown 0.3s ease-out;
}

.custom-amount-section label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.85rem;
}

.custom-amount-section input {
    margin-bottom: 0.75rem;
}

.tracking-history h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.entries-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 150px;
    overflow-y: auto;
}

.entry-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--color-bg);
    border-radius: 6px;
    font-size: 0.9rem;
}

.entry-amount {
    font-weight: 600;
    color: var(--color-primary);
}

.entry-time {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.entry-delete {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    font-size: 1.1rem;
    transition: color 0.2s ease;
}

.entry-delete:hover {
    color: #ef4444;
}

.tracking-modal-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.tracking-modal-footer button {
    flex: 1;
}


/* View Tabs */
.view-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background: var(--color-surface);
    padding: 0.5rem;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.tab-btn {
    padding: 0.75rem 2rem;
    background: transparent;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-body);
}

.tab-btn:hover {
    color: var(--color-text);
    background: var(--color-surface-light);
}

.tab-btn.active {
    background: var(--color-primary);
    color: var(--color-bg);
    box-shadow: var(--shadow-sm);
}

.tab-btn.active:hover {
    background: var(--color-primary-light);
}

.view-container {
    display: none;
    animation: fadeInUp 0.4s ease-out;
}

.view-container.active {
    display: block;
}

@media (max-width: 640px) {
    .view-tabs {
        width: 100%;
    }
    
    .tab-btn {
        flex: 1;
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
}

/* Time Picker */
.time-picker {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.time-select {
    flex: 1;
    padding: 0.75rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font-size: 1rem;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all 0.3s ease;
}

.time-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

.time-select:hover {
    border-color: var(--color-primary);
}

.time-separator {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

/* View Modal Specific */
.view-modal-content {
    max-width: 90vw;
    max-height: 90vh;
    width: 1200px;
}

.view-modal-content .modal-body {
    padding: 2rem;
    max-height: calc(90vh - 150px);
    overflow-y: auto;
}

/* Month selector in modal header */
.month-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-month-nav {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    width: 36px;
    height: 36px;
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-month-nav:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-bg);
}

.current-month {
    font-weight: 600;
    font-size: 1rem;
    min-width: 150px;
    text-align: center;
    color: var(--color-text);
}

@media (max-width: 768px) {
    .view-modal-content {
        width: 95vw;
        max-width: 95vw;
    }
    
    .time-picker {
        flex-direction: column;
        align-items: stretch;
    }
    
    .time-separator {
        display: none;
    }
}

/* Notes Field */
.textarea-field {
    min-height: 80px;
    resize: vertical;
    font-family: var(--font-body);
    line-height: 1.5;
}

.character-count {
    display: block;
    text-align: right;
    margin-top: 0.25rem;
    font-size: 0.75rem;
}

.habit-notes {
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: var(--color-surface-light);
    border-radius: 8px;
    font-size: 0.85rem;
    line-height: 1.4;
    color: var(--color-text-muted);
    font-style: italic;
    border-left: 3px solid var(--color-primary);
}

.habit-notes::before {
    content: "💡 ";
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--color-surface);
    border-radius: 12px;
    margin-bottom: 1rem;
}

.theme-toggle-label {
    flex: 1;
    font-weight: 600;
    color: var(--color-text);
}

.theme-switch {
    position: relative;
    width: 60px;
    height: 30px;
    background: var(--color-border);
    border-radius: 15px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.theme-switch.active {
    background: var(--color-primary);
}

.theme-switch-slider {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

.theme-switch.active .theme-switch-slider {
    transform: translateX(30px);
}

/* Light Themes */

/* Light Theme 1: Ocean Blue (Professional) */
body.light-ocean {
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-surface-light: #e0f2fe;
    --color-text: #0f172a;
    --color-text-muted: #475569;
    --color-border: #cbd5e1;
    --color-primary: #0284c7;
    --color-primary-light: #38bdf8;
    --color-success: #059669;
    --color-danger: #dc2626;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* ADHD-Optimized Therapeutic Themes */

/* Light Theme 2: Serenity (Gentle & Soothing) */
body.light-serenity {
    --color-bg: #f5f3f0;
    --color-surface: #ffffff;
    --color-surface-light: #e8e3df;
    --color-text: #3d3d3d;
    --color-text-muted: #6b6b6b;
    --color-border: #d4ccc4;
    --color-primary: #9fa895;
    --color-primary-light: #bfccb3;
    --color-success: #8fa885;
    --color-danger: #c48a8a;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08);
}

/* Light Theme 3: Dawn (Fresh Start) */
body.light-dawn {
    --color-bg: #faf8f0;
    --color-surface: #ffffff;
    --color-surface-light: #f5ede0;
    --color-text: #3d3832;
    --color-text-muted: #6b6560;
    --color-border: #e0d4c4;
    --color-primary: #d9a87a;
    --color-primary-light: #ecc49b;
    --color-success: #a8b88a;
    --color-danger: #d48a7a;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08);
}

/* Light Theme 4: Harmony (Wellness Focus) */
body.light-harmony {
    --color-bg: #f5f9f7;
    --color-surface: #ffffff;
    --color-surface-light: #e6f2ed;
    --color-text: #2d3d3a;
    --color-text-muted: #5a6b67;
    --color-border: #cce0d6;
    --color-primary: #7ab8ad;
    --color-primary-light: #9dcfc5;
    --color-success: #85b894;
    --color-danger: #d48a8a;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08);
}

/* Light Theme 5: Mist (Ultra Calm) */
body.light-mist {
    --color-bg: #f5f7f9;
    --color-surface: #ffffff;
    --color-surface-light: #e8edf2;
    --color-text: #2d3640;
    --color-text-muted: #5a6672;
    --color-border: #d0d8e0;
    --color-primary: #a0b5c7;
    --color-primary-light: #bccfe0;
    --color-success: #7a9eb3;
    --color-danger: #b38a8a;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.07);
}

/* Light theme shadows for all variants */
body.light-ocean .btn-settings,
body.light-serenity .btn-settings,
body.light-dawn .btn-settings,
body.light-harmony .btn-settings,
body.light-mist .btn-settings {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

body.light-ocean .habit-card,
body.light-serenity .habit-card,
body.light-dawn .habit-card,
body.light-harmony .habit-card,
body.light-mist .habit-card {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

body.light-ocean .modal-content,
body.light-serenity .modal-content,
body.light-dawn .modal-content,
body.light-harmony .modal-content,
body.light-mist .modal-content {
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.12);
}

/* Export Button */
.btn-export {
    background: var(--color-success);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.btn-export:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-export:active {
    transform: translateY(0);
}

.export-section {
    padding: 1rem;
    background: var(--color-surface);
    border-radius: 12px;
    margin-bottom: 1rem;
}

.export-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.export-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.export-checkbox:hover {
    background: var(--color-surface-light);
}

.export-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.export-checkbox label {
    cursor: pointer;
    color: var(--color-text);
    font-size: 0.9rem;
}

@media (max-width: 640px) {
    .btn-export {
        width: 100%;
        justify-content: center;
    }
}

/* Theme Selector Styling */
.theme-selector {
    margin-top: 0.75rem;
}

.theme-select {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: 10px;
    color: var(--color-text);
    font-size: 0.95rem;
    font-family: var(--font-body);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.theme-select:hover {
    border-color: var(--color-primary);
    background-color: var(--color-surface-light);
}

.theme-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

.theme-hint {
    display: block;
    margin-top: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    font-style: italic;
}

/* Make select options look nice */
.theme-select option {
    padding: 0.5rem;
    background: var(--color-surface);
    color: var(--color-text);
}

@media (max-width: 640px) {
    .theme-select {
        font-size: 0.9rem;
        padding: 0.75rem;
    }
}

/* ============================================================================
   PHASE 1: NOTIFICATION SYSTEM STYLES
   ============================================================================ */

/* Notification animations */
@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

/* Notification container */
.notification {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    pointer-events: auto;
}

.notification-error {
    background: #dc2626 !important;
}

.notification-success {
    background: #16a34a !important;
}

.notification-info {
    background: #3b82f6 !important;
}

/* Update banner (from service worker) */
#updateBanner {
    animation: slideIn 0.3s ease;
}

/* Mobile responsive notifications */
@media (max-width: 640px) {
    .notification {
        max-width: calc(100% - 40px);
        font-size: 0.85rem;
        padding: 0.875rem 1.25rem;
        left: 10px !important;
        right: 10px !important;
        top: 10px !important;
        width: auto !important;
    }
    
    #updateBanner {
        left: 10px;
        right: 10px;
        transform: none;
        flex-direction: column;
        align-items: stretch;
    }
    
    #updateBanner button {
        width: 100%;
    }
}