:root {
    --color-primary: #E4C1F9;
    --color-secondary: #F6DFEB;
    --color-accent: #D0F4DE;
    --color-warm: #FCF6BD;
    --color-coral: #FFB7C5;
    --color-dark: #2D3748;
    --color-light: #FFFFFF;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-warm) 100%);
    color: var(--color-dark);
    line-height: 1.6;
    min-height: 100vh;
    padding-bottom: 80px;
}

.app-header {
    text-align: center;
    padding: 20px 16px;
    background: var(--color-light);
    box-shadow: 0 2px 10px var(--color-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-header h1 {
    font-size: 1.8rem;
    margin-bottom: 8px;
    color: var(--color-dark);
}

.app-header p {
    color: #666;
    font-size: 0.9rem;
}

.app-main {
    padding: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.app-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.app-section.active {
    display: block;
}

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

/* Cards */
.welcome-card, .bell-config-card, .meditation-card, .overview-card, .prompt-card {
    background: var(--color-light);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 4px 15px var(--color-shadow);
    border: 1px solid rgba(228, 193, 249, 0.3);
}

.welcome-card h2 {
    color: var(--color-dark);
    margin-bottom: 8px;
    font-size: 1.4rem;
}

.quick-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 20px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.8rem;
    color: #666;
}

/* Forms */
.bell-form, .journal-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-row {
    display: flex;
    gap: 12px;
}

.form-row .form-group {
    flex: 1;
}

label {
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-dark);
    font-size: 0.9rem;
}

input, select, textarea {
    padding: 12px;
    border: 2px solid #E2E8F0;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--color-light);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(228, 193, 249, 0.2);
}

.days-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.day-checkbox {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    background: #F7FAFC;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.85rem;
}

.day-checkbox:hover {
    background: var(--color-secondary);
}

.day-checkbox input:checked + span,
.day-checkbox:has(input:checked) {
    background: var(--color-primary);
    color: var(--color-light);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-icon {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: #D6A8F0;
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--color-accent);
    color: var(--color-dark);
}

.btn-secondary:hover {
    background: #B8E6C1;
}

.btn-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-light);
    box-shadow: 0 2px 8px var(--color-shadow);
    font-size: 1.2rem;
}

.btn-icon:hover {
    transform: scale(1.05);
}

.btn-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Bell Lists */
.bells-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bell-item {
    background: var(--color-light);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px var(--color-shadow);
    border-left: 4px solid var(--color-primary);
}

.bell-info h4 {
    margin-bottom: 4px;
    color: var(--color-dark);
}

.bell-info p {
    font-size: 0.85rem;
    color: #666;
}

.bell-controls {
    display: flex;
    gap: 8px;
}

.bell-controls button {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.toggle-bell {
    background: var(--color-accent);
}

.delete-bell {
    background: var(--color-coral);
    color: var(--color-light);
}

/* Meditation */
.meditation-types {
    display: grid;
    gap: 16px;
    margin-bottom: 20px;
}

.meditation-card {
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.meditation-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px var(--color-shadow);
}

.meditation-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.duration-selector {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
}

.duration-btn {
    padding: 6px 12px;
    background: var(--color-secondary);
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8rem;
}

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

.meditation-session {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.session-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 20px;
    text-align: center;
}

.meditation-timer {
    margin: 40px 0;
}

.timer-circle {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.timer-text {
    position: absolute;
    font-size: 2rem;
    font-weight: bold;
    color: var(--color-light);
}

.meditation-guide {
    text-align: center;
    margin: 20px 0;
    max-width: 300px;
}

.guide-text {
    font-size: 1.1rem;
    color: var(--color-light);
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.session-controls {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

/* Current Session */
.current-session {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-light);
    text-align: center;
}

.session-timer {
    margin: 20px 0;
}

.timer-display {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 16px;
}

.timer-controls {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.breathing-guide {
    margin-top: 20px;
}

.breathing-circle {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    margin: 0 auto 12px;
    animation: breathe 4s infinite ease-in-out;
}

@keyframes breathe {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.breathing-text {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Tracking */
.tracking-overview {
    display: grid;
    gap: 16px;
    margin-bottom: 24px;
}

.overview-card {
    display: flex;
    align-items: center;
    gap: 16px;
}

.card-icon {
    font-size: 2rem;
    width: 60px;
    text-align: center;
}

.card-content {
    flex: 1;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #E2E8F0;
    border-radius: 4px;
    overflow: hidden;
    margin: 8px 0;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

.streak-number, .total-time {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-primary);
}

/* Calendar */
.habit-calendar {
    background: var(--color-light);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px var(--color-shadow);
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

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

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.calendar-day.other-month {
    color: #CBD5E0;
}

.calendar-day.today {
    background: var(--color-warm);
    font-weight: bold;
}

.calendar-day.has-practice {
    background: var(--color-accent);
    color: var(--color-dark);
}

.calendar-day.current-streak {
    background: var(--color-primary);
    color: var(--color-light);
}

/* Chart */
.weekly-chart {
    background: var(--color-light);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: 0 4px 15px var(--color-shadow);
}

.chart-container {
    display: flex;
    justify-content: center;
    margin-top: 16px;
}

#weeklyChart {
    max-width: 100%;
    height: auto;
}

/* Reflection */
.reflection-prompt {
    margin-bottom: 24px;
}

.prompt-card {
    text-align: center;
    position: relative;
}

.prompt-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.prompt-text {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 20px;
    color: var(--color-dark);
    font-style: italic;
}

.mood-selector {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 8px;
}

.mood-btn {
    width: 48px;
    height: 48px;
    border: 2px solid #E2E8F0;
    border-radius: 50%;
    background: var(--color-light);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

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

.reflections-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.reflection-item {
    background: var(--color-light);
    border-radius: 8px;
    padding: 16px;
    box-shadow: 0 2px 8px var(--color-shadow);
    border-left: 4px solid var(--color-accent);
}

.reflection-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.reflection-date {
    font-weight: 600;
    color: var(--color-dark);
}

.reflection-mood {
    font-size: 1.2rem;
}

.reflection-text {
    margin-bottom: 8px;
    line-height: 1.5;
}

.reflection-gratitude {
    font-style: italic;
    color: #666;
    font-size: 0.9rem;
}

/* FAQ */
.faq-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--color-light);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px var(--color-shadow);
}

.faq-question {
    width: 100%;
    padding: 16px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--color-secondary);
}

.faq-icon {
    font-size: 1.2rem;
    transition: var(--transition);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 16px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-answer:not([hidden]) {
    padding: 16px;
    max-height: 200px;
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #666;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    color: #CBD5E0;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-light);
    border-top: 1px solid #E2E8F0;
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    z-index: 1000;
    box-shadow: 0 -2px 10px var(--color-shadow);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: #666;
    padding: 8px 12px;
    border-radius: 8px;
    transition: var(--transition);
    min-width: 60px;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.nav-item span {
    font-size: 0.7rem;
    font-weight: 500;
}

.nav-item.active, .nav-item:hover {
    color: var(--color-primary);
    background: rgba(228, 193, 249, 0.1);
}

/* Footer */
footer {
    background: var(--color-dark);
    color: var(--color-light);
    text-align: center;
    padding: 16px;
    font-size: 0.8rem;
    margin-top: 40px;
}

/* Responsive Design */
@media (min-width: 768px) {
    .app-main {
        padding: 24px;
        max-width: 800px;
    }
    
    .meditation-types {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .tracking-overview {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .form-row {
        gap: 20px;
    }
    
    .calendar-grid {
        gap: 8px;
    }
    
    .bottom-nav {
        max-width: 800px;
        left: 50%;
        transform: translateX(-50%);
        border-radius: 16px 16px 0 0;
    }
}

@media (min-width: 1024px) {
    .app-main {
        max-width: 1000px;
    }
    
    .meditation-types {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .tracking-overview {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Animations */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.pulse {
    animation: pulse 2s infinite;
}

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

.slide-in-up {
    animation: slideInUp 0.3s ease;
}

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

/* Focus styles */
button:focus, input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --color-shadow: rgba(0, 0, 0, 0.3);
    }
    
    .bell-item, .reflection-item, .faq-item {
        border: 2px solid var(--color-dark);
    }
}