:root {
    --primary-color: #1E56A0;
    --adventure-blue: #0066FF;
    --yellow-joy: #FFCC00;
    --orange-fun: #FF6B35;
    --bg-light: #F4F7FE;
    --text-dark: #1A1A1A;
    --text-light: #FFFFFF;
    
    --glass-bg: rgba(255, 255, 255, 0.35);
    --glass-bg-heavy: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(30, 86, 160, 0.15);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-light: #0B1120;
        --text-dark: #F4F7FE;
        --glass-bg: rgba(15, 23, 42, 0.45);
        --glass-bg-heavy: rgba(15, 23, 42, 0.75);
        --glass-border: rgba(255, 255, 255, 0.1);
        --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
    }
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text-dark);
    background: var(--bg-light);
    background-image: linear-gradient(135deg, var(--bg-light) 0%, #e0e7ff 100%);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

@media (prefers-color-scheme: dark) {
    body {
        background-image: linear-gradient(135deg, var(--bg-light) 0%, #1e293b 100%);
    }
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Fredoka', sans-serif;
}

/* Glassmorphism Classes */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 20px;
}

.glass-heavy {
    background: var(--glass-bg-heavy);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

/* Utility */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mt-3 { margin-top: 1rem; }
.text-primary { color: var(--adventure-blue); }
.full-width { width: 100%; }

/* Buttons */
button {
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-primary, .btn-secondary, .btn-small, .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--adventure-blue), var(--primary-color));
    color: var(--text-light);
    box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
}

.btn-primary:hover, .btn-primary:active {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 102, 255, 0.5);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--yellow-joy), var(--orange-fun));
    color: #fff;
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.btn-secondary:hover, .btn-secondary:active {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.5);
}

.btn-red {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    text-decoration: none;
    background: linear-gradient(135deg, #E63946 0%, #D90429 100%);
    color: white;
    box-shadow: 0 6px 20px rgba(217, 4, 41, 0.4);
    border: none;
}

.btn-red:hover, .btn-red:active {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(217, 4, 41, 0.5);
}

.btn-small {
    padding: 10px 20px;
    font-size: 0.95rem;
    border-radius: 20px;
    background: var(--adventure-blue);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--adventure-blue);
    color: var(--adventure-blue);
}

.btn-outline.waze {
    border-color: #33ccff;
    color: #33ccff;
}

@media (prefers-color-scheme: dark) {
    .btn-outline {
        color: var(--text-dark);
        border-color: var(--text-dark);
    }
}

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

.pulse { animation: pulse 2s infinite ease-in-out; }
.pulse-slow { animation: pulse 4s infinite ease-in-out; }

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

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

.float { animation: float 3s ease-in-out infinite; }

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

.animate-slide-up {
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Indicators & Controls */
.scroll-indicator-top {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    text-align: center;
    padding: 10px;
    z-index: 100;
    border-radius: 0 0 20px 20px;
    border-top: none;
    font-weight: 600;
    color: var(--primary-color);
    transform: translateY(-100%);
    transition: transform 0.4s ease;
}

.scroll-indicator-top.visible {
    transform: translateY(0);
}

@media (prefers-color-scheme: dark) {
    .scroll-indicator-top { color: var(--text-dark); }
}

.audio-toggle {
    position: fixed;
    top: 15px;
    right: 15px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 101;
    color: var(--primary-color);
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

@media (prefers-color-scheme: dark) {
    .audio-toggle { color: var(--text-dark); }
}

.drag-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 24px;
    background: linear-gradient(135deg, #E63946 0%, #D90429 100%);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    border-radius: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 5px;
    font-size: 1.1rem;
    font-weight: 600;
    z-index: 10;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    animation: float-centered 2s infinite;
    transition: opacity 0.4s ease;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    opacity: 0;
}

body.loaded .drag-indicator {
    animation: float-centered 2s infinite, fadeInDelay 7s ease-in forwards;
}

.floating-scroll-down {
    display: none;
}

/* Layout */
.section {
    position: relative;
    padding: 60px 20px;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0; /* For scroll animation */
}

.floating-gif {
    position: absolute;
    width: 140px;
    height: auto;
    z-index: 5;
    pointer-events: none;
    filter: drop-shadow(0 10px 15px rgba(0,0,0,0.2));
}

.floating-gif.top-right {
    top: -15px;
    right: 5px;
    animation: float 4s ease-in-out infinite;
}

.floating-gif.bottom-left {
    bottom: -15px;
    left: 5px;
    animation: float 3s ease-in-out infinite reverse;
}

.floating-gif.top-left {
    top: -10px;
    left: -25px;
    animation: float 3.5s ease-in-out infinite;
}

.section.visible {
    animation: slideUp 0.8s forwards;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    text-shadow: 1px 1px 2px rgba(255,255,255,0.5);
}

@media (prefers-color-scheme: dark) {
    .section-title {
        color: var(--yellow-joy);
        text-shadow: none;
    }
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 25px;
    opacity: 0.9;
}

/* Red Contrast Theme */
.countdown-section,
.rsvp-section {
    background-color: #E63946;
    background-image: linear-gradient(135deg, #E63946 0%, #D90429 100%);
    color: white;
    border-radius: 20px;
    margin-top: 20px;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(217, 4, 41, 0.3);
}

.countdown-section .section-title,
.rsvp-section .section-title {
    color: white;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.rsvp-section .form-group label {
    color: white;
}

.rsvp-section .form-group input[type="text"],
.rsvp-section .form-group input[type="tel"],
.rsvp-section .form-group textarea,
.rsvp-section .counter {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

.rsvp-section .counter input,
.rsvp-section .btn-counter {
    color: white;
}

.rsvp-section .form-group input::placeholder,
.rsvp-section .form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

@media (prefers-color-scheme: dark) {
    .countdown-section,
    .rsvp-section {
        background-color: #9d0208;
        background-image: linear-gradient(135deg, #9d0208 0%, #6a040f 100%);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    }
}

/* Hero Section */
.welcome-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--adventure-blue), var(--primary-color));
    color: white;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: opacity 0.8s ease;
}

.welcome-content {
    text-align: center;
}

.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

#hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@keyframes blurIn {
    0%, 75% { 
        backdrop-filter: blur(0px); 
        -webkit-backdrop-filter: blur(0px);
        background: rgba(255, 255, 255, 0); 
    }
    100% { 
        backdrop-filter: blur(6px); 
        -webkit-backdrop-filter: blur(6px);
        background: rgba(255, 255, 255, 0.2); 
    }
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: rgba(255, 255, 255, 0);
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
}

body.loaded .video-overlay {
    animation: blurIn 7s ease-in forwards;
}

@keyframes fadeInDelay {
    0%, 75% { opacity: 0; }
    100% { opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 20px;
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    opacity: 0;
}

body.loaded .hero-content {
    animation: fadeInDelay 7s ease-in forwards;
}

.badge {
    padding: 15px 30px;
    border-radius: 40px;
    display: inline-block;
}

.badge h1 {
    font-size: 2.5rem;
    line-height: 1.1;
    color: var(--primary-color);
}

.badge span {
    font-size: 1.5rem;
    color: var(--orange-fun);
}

@media (prefers-color-scheme: dark) {
    .badge h1 { color: var(--text-dark); }
}

.main-invite {
    font-size: 1.4rem;
    font-weight: 600;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    background: rgba(0,0,0,0.3);
    padding: 10px 20px;
    border-radius: 12px;
    backdrop-filter: blur(4px);
}

.event-details {
    padding: 20px;
    width: 100%;
}

.detail-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.detail-item:last-child {
    margin-bottom: 0;
}

.detail-item i {
    color: var(--adventure-blue);
    font-size: 1.3rem;
}

/* Countdown */
.countdown-container {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

.time-box {
    flex: 1;
    text-align: center;
    padding: 15px 5px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.time-box span {
    font-family: 'Fredoka', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    line-height: 1;
    margin-bottom: 5px;
}

@media (prefers-color-scheme: dark) {
    .time-box span { color: var(--yellow-joy); }
}

.time-box p {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 600;
    opacity: 0.8;
}

/* Quiz */
.quiz-container {
    padding: 25px;
    text-align: center;
}

.quiz-question {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.quiz-option {
    padding: 12px 20px;
    background: rgba(255,255,255,0.5);
    border: 2px solid transparent;
    border-radius: 15px;
    font-weight: 500;
    font-size: 1.1rem;
    transition: all 0.2s;
}

@media (prefers-color-scheme: dark) {
    .quiz-option {
        background: rgba(255,255,255,0.1);
        color: white;
    }
}

.quiz-option:hover {
    background: rgba(255,255,255,0.8);
    transform: scale(1.02);
}

.quiz-option.correct {
    background: #4ade80;
    color: #166534;
    border-color: #22c55e;
}

.quiz-option.wrong {
    background: #f87171;
    color: #991b1b;
    border-color: #ef4444;
}

.quiz-feedback {
    margin-top: 20px;
    padding: 15px;
    border-radius: 15px;
    font-weight: 600;
}

.quiz-feedback.success {
    background: rgba(74, 222, 128, 0.2);
    color: #166534;
}
@media (prefers-color-scheme: dark) {
    .quiz-feedback.success { color: #4ade80; }
}

.quiz-feedback.error {
    background: rgba(248, 113, 113, 0.2);
    color: #991b1b;
}
@media (prefers-color-scheme: dark) {
    .quiz-feedback.error { color: #f87171; }
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 20px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--adventure-blue);
    border-radius: 4px;
}

.timeline-item {
    position: relative;
    padding: 15px 20px;
    margin-bottom: 20px;
    margin-left: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -44px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--yellow-joy);
    border: 3px solid white;
    box-shadow: 0 0 10px rgba(0,0,0,0.2);
}

.timeline-item.highlight {
    border: 2px solid var(--orange-fun);
}

.timeline-item.highlight::before {
    background: var(--orange-fun);
    transform: translateY(-50%) scale(1.3);
}

.timeline-item .time {
    font-weight: 700;
    color: var(--adventure-blue);
    font-size: 1.2rem;
    margin-bottom: 5px;
}

@media (prefers-color-scheme: dark) {
    .timeline-item .time { color: var(--yellow-joy); }
}

.dress-code {
    padding: 15px;
    text-align: center;
}

.dress-code h3 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

@media (prefers-color-scheme: dark) {
    .dress-code h3 { color: var(--yellow-joy); }
}

/* Forms */
.form-container {
    padding: 25px;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="tel"],
.form-group textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 12px;
    background: rgba(255,255,255,0.6);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: all 0.3s;
}

@media (prefers-color-scheme: dark) {
    .form-group input[type="text"],
    .form-group input[type="tel"],
    .form-group textarea {
        background: rgba(0,0,0,0.3);
        border-color: rgba(255,255,255,0.2);
        color: white;
    }
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--adventure-blue);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.2);
    background: rgba(255,255,255,0.9);
}

@media (prefers-color-scheme: dark) {
    .form-group input:focus,
    .form-group textarea:focus {
        background: rgba(0,0,0,0.6);
    }
}

.counter {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.6);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.1);
}

@media (prefers-color-scheme: dark) {
    .counter {
        background: rgba(0,0,0,0.3);
        border-color: rgba(255,255,255,0.2);
    }
}

.btn-counter {
    flex: 1;
    background: transparent;
    font-size: 1.5rem;
    padding: 10px;
    color: var(--primary-color);
}

@media (prefers-color-scheme: dark) {
    .btn-counter { color: white; }
}

.btn-counter:active { background: rgba(0,0,0,0.05); }

.counter input {
    flex: 2;
    text-align: center;
    border: none !important;
    background: transparent !important;
    font-weight: 700;
    font-size: 1.2rem !important;
}

/* Location */
.location-card {
    overflow: hidden;
}

.location-details {
    padding: 20px;
    text-align: center;
}

.location-details h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

/* Album Swiper */
.photo-swiper {
    width: 100%;
    padding-bottom: 40px; /* Space for pagination */
}

.photo-swiper .swiper-slide {
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 15px;
    overflow: hidden;
}

.photo-item {
    aspect-ratio: 1;
    width: 100%;
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.photo-item:hover img {
    transform: scale(1.05);
}

.swiper-pagination-bullet-active {
    background: var(--adventure-blue);
}

.swiper-button-next, .swiper-button-prev {
    color: var(--adventure-blue);
    background: rgba(255, 255, 255, 0.7);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    backdrop-filter: blur(5px);
}

.swiper-button-next::after, .swiper-button-prev::after {
    font-size: 1.2rem;
    font-weight: bold;
}

/* PWA Prompt */
.pwa-prompt {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    z-index: 1000;
    padding: 15px;
    transform: translateY(150%);
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.pwa-prompt.show {
    transform: translateY(0);
}

.pwa-content {
    display: flex;
    align-items: center;
    gap: 15px;
}

.pwa-content i.fa-download {
    font-size: 2rem;
    color: var(--adventure-blue);
}

@media (prefers-color-scheme: dark) {
    .pwa-content i.fa-download { color: var(--yellow-joy); }
}

.pwa-content div {
    flex: 1;
}

.pwa-content strong {
    display: block;
    font-size: 1rem;
}

.pwa-content p {
    font-size: 0.85rem;
    opacity: 0.8;
}

.btn-icon {
    background: transparent;
    color: inherit;
    font-size: 1.2rem;
    padding: 5px;
    opacity: 0.6;
}