/* ===================================
   CSS Variables & Design Tokens
   =================================== */
:root {
    /* Colors */
    --color-primary: #8B7355;
    --color-primary-light: #A69076;
    --color-primary-dark: #6B5642;
    
    --color-background: #FAF8F5;
    --color-background-alt: #F5F0E8;
    --color-surface: #FFFFFF;
    
    --color-text: #2D2A26;
    --color-text-muted: #6B6560;
    --color-text-light: #9B958E;
    
    --color-accent: #C4A98B;
    --color-border: #E8E2D9;
    
    /* Typography */
    --font-heading: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Montserrat', -apple-system, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

/* ===================================
   Reset & Base Styles
   =================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.2;
}

/* ===================================
   Container
   =================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: background-color var(--transition-normal), 
                padding var(--transition-normal),
                box-shadow var(--transition-normal);
}

.navbar.scrolled {
    background-color: rgba(250, 248, 245, 0.98);
    padding: var(--space-sm) 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-surface);
    letter-spacing: 0.1em;
    transition: color var(--transition-normal);
}

.navbar.scrolled .nav-logo {
    color: var(--color-text);
}

.nav-menu {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-surface);
    position: relative;
    padding: var(--space-xs) 0;
    transition: color var(--transition-normal);
}

.navbar.scrolled .nav-link {
    color: var(--color-text);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: currentColor;
    transition: width var(--transition-normal);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: var(--space-xs);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-surface);
    transition: background-color var(--transition-normal),
                transform var(--transition-normal);
}

.navbar.scrolled .nav-toggle span {
    background-color: var(--color-text);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('images/wedding-hero.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(45, 42, 38, 0.3) 0%,
        rgba(45, 42, 38, 0.5) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--color-surface);
    padding: var(--space-lg);
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
    opacity: 0.9;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 400;
    font-style: italic;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-md);
}

.hero-date {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-2xl);
}

/* Countdown */
.countdown {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
}

.countdown-number {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.countdown-label {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.8;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-surface);
    opacity: 0.7;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.scroll-arrow {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-surface), transparent);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-surface);
    border: 2px solid var(--color-primary);
}

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

/* ===================================
   Section Styles
   =================================== */
.section {
    padding: var(--space-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-subtitle {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 400;
    font-style: italic;
    color: var(--color-text);
}

.section-description {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
}

/* ===================================
   Our Story Section
   =================================== */
.story {
    background-color: var(--color-background);
}

.story-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

.story-text {
    max-width: 700px;
    margin: 0 auto;
}

.story-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.story-text p:last-child {
    margin-bottom: 0;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
    padding-left: var(--space-2xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-xl);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-2xl) - 4px);
    top: 0;
    width: 9px;
    height: 9px;
    background-color: var(--color-primary);
    border-radius: 50%;
}

.timeline-date {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.timeline-content p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

/* ===================================
   Event Details Section
   =================================== */
.details {
    background-color: var(--color-background-alt);
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.detail-card {
    background-color: var(--color-surface);
    padding: var(--space-xl);
    text-align: center;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    transition: transform var(--transition-normal),
                box-shadow var(--transition-normal);
}

.detail-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.detail-icon {
    display: inline-flex;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.detail-card h3 {
    font-size: 1.375rem;
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.detail-time {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

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

.map-container {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.map-container iframe {
    display: block;
}

/* ===================================
   Gallery Section
   =================================== */
.gallery {
    background-color: var(--color-background);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 250px);
    gap: var(--space-md);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.gallery-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(45, 42, 38, 0);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-normal);
}

.gallery-overlay span {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-surface);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--transition-normal),
                transform var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
    background-color: rgba(45, 42, 38, 0.4);
}

.gallery-item:hover .gallery-overlay span {
    opacity: 1;
    transform: translateY(0);
}

.gallery-item-large {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery-item-wide {
    grid-column: span 2;
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background-color: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal),
                visibility var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-img {
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    color: var(--color-surface);
    font-size: 2rem;
    padding: var(--space-md);
    transition: opacity var(--transition-normal);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    opacity: 0.7;
}

.lightbox-close {
    top: var(--space-md);
    right: var(--space-md);
    font-size: 2.5rem;
}

.lightbox-prev {
    left: var(--space-md);
}

.lightbox-next {
    right: var(--space-md);
}

/* ===================================
   RSVP Section
   =================================== */
.rsvp {
    background-color: var(--color-background-alt);
}

.rsvp-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-surface);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-md);
    font-size: 1rem;
    color: var(--color-text);
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-normal),
                box-shadow var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 115, 85, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236B6560' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    background-size: 18px;
}

/* Radio buttons */
.radio-group {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-sm);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: 0.9375rem;
    font-weight: 400;
    text-transform: none;
    letter-spacing: normal;
}

.radio-label input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    transition: border-color var(--transition-normal);
    position: relative;
}

.radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 10px;
    height: 10px;
    background-color: var(--color-primary);
    border-radius: 50%;
    transition: transform var(--transition-normal);
}

.radio-label input:checked + .radio-custom {
    border-color: var(--color-primary);
}

.radio-label input:checked + .radio-custom::after {
    transform: translate(-50%, -50%) scale(1);
}

.btn-submit {
    width: 100%;
    margin-top: var(--space-md);
}

/* Success Message */
.rsvp-success {
    display: none;
    text-align: center;
    padding: var(--space-2xl);
}

.rsvp-success.active {
    display: block;
}

.success-icon {
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.rsvp-success h3 {
    font-size: 2rem;
    font-style: italic;
    margin-bottom: var(--space-sm);
}

.rsvp-success p {
    color: var(--color-text-muted);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--color-text);
    color: var(--color-surface);
    padding: var(--space-2xl) 0;
}

.footer-content {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.footer-names {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-style: italic;
    margin-bottom: var(--space-xs);
}

.footer-date {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.8;
    margin-bottom: var(--space-sm);
}

.footer-hashtag {
    font-size: 1rem;
    color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 0.875rem;
    opacity: 0.6;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 992px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
    }
    
    .gallery-item-large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .gallery-item-wide {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--color-background);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-lg);
        transition: right var(--transition-normal);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu .nav-link {
        color: var(--color-text);
        font-size: 1.25rem;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    /* Hero */
    .hero {
        background-attachment: scroll;
    }
    
    .countdown {
        gap: var(--space-md);
    }
    
    .countdown-item {
        min-width: 60px;
    }
    
    /* Forms */
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .radio-group {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .rsvp-form {
        padding: var(--space-lg);
    }
    
    /* Gallery */
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-item-large,
    .gallery-item-wide {
        grid-column: span 1;
    }
}

@media (max-width: 480px) {
    .section {
        padding: var(--space-2xl) 0;
    }
    
    .countdown {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }
    
    .countdown-item {
        min-width: 70px;
    }
    
    .details-grid {
        gap: var(--space-md);
    }
    
    .detail-card {
        padding: var(--space-lg);
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
}

/* Intersection Observer animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}