/**
 * Lunar Phase Tracker - Dark Theme CSS
 * Modern, app-like interface with swipe gestures
 */

/* Import modern fonts */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* CSS Variables for theming */
:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #12182e;
    --bg-card: #1a2138;
    --bg-card-hover: #202a45;
    --accent-primary: #4a9eff;
    --accent-secondary: #7b61ff;
    --accent-glow: #00d4ff;
    --text-primary: #e8eaed;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border-color: #2d3748;
    --moon-glow: #ffd700;
    --success: #10b981;
    --warning: #f59e0b;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #0d1525 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    min-height: 100vh;
    position: relative;
    margin: 0;
    padding: 0;
}

/* Animated starfield background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 60px 70px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 50px 50px, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 90px 10px, rgba(255,255,255,0.25), transparent);
    background-size: 200px 200px;
    background-repeat: repeat;
    animation: stars-drift 60s linear infinite;
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
}

@keyframes stars-drift {
    from {
        transform: translateY(0);
    }
    to {
        transform: translateY(-200px);
    }
}

/* Container */
.app-container {
    max-width: 480px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
    overflow-x: hidden;
}

/* Header */
.app-header {
    padding: 1.5rem 1.5rem 1rem;
    text-align: center;
    background: linear-gradient(180deg, rgba(18, 24, 46, 0.9) 0%, transparent 100%);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.header-logo {
    margin-bottom: 1rem;
}

.site-logo {
    max-width: 400px;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 0 10px rgba(74, 158, 255, 0.3));
}

@media (max-width: 768px) {
    .site-logo {
        max-width: 300px;
    }
}

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.app-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Main Content Area */
.content-wrapper {
    flex: 1;
    padding: 1rem;
    overflow: hidden;
    width: 100%;
    max-width: 100%;
}

/* Sections container - vertical layout for mobile-first */
.sections-container {
    position: relative;
    width: 100%;
    max-width: 100%;
}

.sections-track {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
}

.section {
    width: 100%;
    max-width: 100%;
    padding: 0;
    box-sizing: border-box;
    margin-bottom: 1rem;
}

#lunar-cycle-section {
    margin-bottom: 1rem;
}

/* Today's Moon Card */
.moon-card {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.moon-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 48px rgba(74, 158, 255, 0.15);
    border-color: var(--accent-primary);
}

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

.moon-emoji {
    font-size: 8rem;
    line-height: 1;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 30px var(--moon-glow));
    animation: moon-float 6s ease-in-out infinite;
}

@keyframes moon-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.phase-name {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-glow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.phase-details {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

/* Illumination progress bar */
.illumination-bar {
    margin: 1.5rem 0;
}

.illumination-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.progress-track {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 100px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary));
    border-radius: 100px;
    transition: width 1s cubic-bezier(0.4, 0.0, 0.2, 1);
    box-shadow: 0 0 10px var(--accent-glow);
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1.5rem;
}

.info-item {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.info-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
}

.info-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.info-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
}

.info-subvalue {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Calendar View */
.calendar-container {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

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

.month-display {
    font-size: 1.25rem;
    font-weight: 600;
}

.month-nav {
    display: flex;
    gap: 0.5rem;
}

.nav-btn {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 1.25rem;
}

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

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    width: 100%;
}

.calendar-day-label {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 0.5rem 0;
    font-weight: 600;
}

.calendar-day {
    aspect-ratio: 1;
    min-width: 0;
    border-radius: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0.5rem 0.25rem;
    overflow: hidden;
}

.calendar-day:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

.calendar-day.today {
    border-color: var(--accent-primary);
    background: linear-gradient(135deg, var(--bg-secondary), rgba(74, 158, 255, 0.1));
}

.calendar-day.empty {
    background: transparent;
    border: none;
    cursor: default;
}

.calendar-day-number {
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.125rem;
    white-space: nowrap;
}

.calendar-moon-emoji {
    font-size: 1.1rem;
    line-height: 1;
}

/* Better calendar sizing for smaller screens */
@media (min-width: 360px) {
    .calendar-day-number {
        font-size: 0.875rem;
    }

    .calendar-moon-emoji {
        font-size: 1.25rem;
    }
}

@media (min-width: 480px) {
    .calendar-day {
        padding: 0.75rem 0.5rem;
    }

    .calendar-day-number {
        font-size: 1rem;
    }

    .calendar-moon-emoji {
        font-size: 1.5rem;
    }
}

/* Swipe Navigation Dots - Hidden in vertical layout */
.nav-dots {
    display: none;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 3rem 1rem;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Error State */
.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    padding: 1rem;
    border-radius: 12px;
    text-align: center;
    margin: 1rem 0;
}

/* Responsive Design */
@media (min-width: 481px) {
    .app-container {
        max-width: 600px;
    }

    .moon-emoji {
        font-size: 10rem;
    }

    .info-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 768px) {
    .app-container {
        max-width: 800px;
    }

    .app-header {
        border-radius: 24px 24px 0 0;
    }

    .content-wrapper {
        padding: 2rem;
    }

    .moon-card, .lunar-cycle-card, .calendar-container {
        padding: 2rem;
    }
}

@media (min-width: 1024px) {
    .app-container {
        max-width: 900px;
    }
}

/* Touch feedback */
@media (hover: none) {
    .moon-card:active,
    .calendar-day:active,
    .nav-btn:active {
        transform: scale(0.98);
    }
}

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

/* Print styles */
@media print {
    body::before {
        display: none;
    }

    .nav-dots,
    .month-nav {
        display: none;
    }
}

/* Detail Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 39, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 2rem;
    max-width: 90%;
    width: 400px;
    border: 1px solid var(--border-color);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

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

.modal-close {
    float: right;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    line-height: 1;
    transition: color 0.3s ease;
}

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

/* Lunar Cycle Visualization */
.lunar-cycle-card {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.lunar-cycle-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-align: center;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cycle-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.cycle-phase {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem 0.5rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.cycle-phase:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(74, 158, 255, 0.2);
}

.cycle-phase.active {
    border-color: var(--accent-primary);
    background: linear-gradient(135deg, var(--bg-secondary), rgba(74, 158, 255, 0.15));
    box-shadow: 0 0 20px rgba(74, 158, 255, 0.3);
}

.cycle-phase-emoji {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 0 10px var(--moon-glow));
}

.cycle-phase-name {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-secondary);
    line-height: 1.2;
    margin-bottom: 0.25rem;
}

.cycle-phase-date {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.cycle-info {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1rem;
    border: 1px solid var(--border-color);
    margin-top: 1rem;
}

.cycle-info-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Mobile optimizations for cycle */
@media (max-width: 480px) {
    .cycle-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.5rem;
    }

    .cycle-phase {
        padding: 0.75rem 0.25rem;
    }

    .cycle-phase-emoji {
        font-size: 2rem;
    }

    .cycle-phase-name {
        font-size: 0.6rem;
    }

    .cycle-phase-date {
        font-size: 0.55rem;
    }
}