/* ========================================
   遵义红花岗剧院 - 场地租赁宣传落地页
   设计风格：典雅剧院风 · 深色奢华 · 酒红金色
   ======================================== */

/* === CSS Variables === */
:root {
    /* Primary Colors */
    --color-primary: #8B1A1A;
    --color-primary-dark: #6B1010;
    --color-primary-light: #A52A2A;
    --color-accent: #C5A55A;
    --color-accent-light: #D4B96E;
    --color-accent-dark: #A88B3D;

    /* Background Colors */
    --bg-primary: #1A1A2E;
    --bg-secondary: #16213E;
    --bg-dark: #0F0F1A;
    --bg-card: #1E1E35;
    --bg-card-hover: #252545;

    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #E0E0E0;
    --text-muted: #A0A0B0;
    --text-accent: #C5A55A;

    /* Glass Effect */
    --glass-bg: rgba(26, 26, 46, 0.85);
    --glass-border: rgba(197, 165, 90, 0.15);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-gold: 0 4px 20px rgba(197, 165, 90, 0.2);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #8B1A1A 0%, #C5A55A 100%);
    --gradient-dark: linear-gradient(180deg, #0F0F1A 0%, #1A1A2E 100%);
    --gradient-hero: linear-gradient(180deg, rgba(15,15,26,0.7) 0%, rgba(26,26,46,0.9) 100%);

    /* Spacing */
    --section-padding: 100px 0;
    --container-max: 1200px;

    /* Typography */
    --font-heading: 'Noto Serif SC', serif;
    --font-body: 'Noto Sans SC', sans-serif;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-secondary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

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

ul {
    list-style: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* === Navbar === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: transparent;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    padding: 10px 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
}

.logo-icon {
    font-size: 28px;
    color: var(--color-accent);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 18px;
    font-size: 15px;
    font-weight: 400;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
    transition: transform var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-accent);
    white-space: nowrap;
}

.nav-phone i {
    font-size: 13px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    z-index: 1001;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* === Hero === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(139, 26, 26, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(197, 165, 90, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(22, 33, 62, 0.8) 0%, transparent 50%),
        var(--bg-dark);
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23C5A55A' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 120px 24px 80px;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(197, 165, 90, 0.1);
    border: 1px solid rgba(197, 165, 90, 0.25);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 32px;
    letter-spacing: 1px;
}

.hero-badge i {
    font-size: 11px;
    color: var(--color-accent);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 64px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 24px;
    letter-spacing: 8px;
}

.title-line {
    display: block;
}

.title-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin: 12px 0;
}

.divider-line {
    width: 60px;
    height: 1px;
    background: var(--color-accent);
    opacity: 0.6;
}

.divider-diamond {
    color: var(--color-accent);
    font-size: 10px;
    opacity: 0.8;
}

.hero-subtitle {
    font-size: 17px;
    color: var(--text-muted);
    line-height: 1.9;
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(197, 165, 90, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border: 1px solid rgba(197, 165, 90, 0.4);
}

.btn-outline:hover {
    background: rgba(197, 165, 90, 0.1);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 13px;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
}

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

.stat-number {
    font-family: var(--font-heading);
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-suffix {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-accent);
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 8px;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, transparent, rgba(197, 165, 90, 0.3), transparent);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 12px;
    letter-spacing: 2px;
}

.scroll-arrow {
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(8px); }
    60% { transform: translateY(4px); }
}

/* === Section Common === */
.section {
    padding: var(--section-padding);
    position: relative;
}

.venues {
    background: var(--bg-dark);
}

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

.cases {
    background: var(--bg-dark);
}

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

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--color-accent);
    margin-bottom: 16px;
    padding: 4px 16px;
    border: 1px solid rgba(197, 165, 90, 0.3);
    border-radius: 50px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 38px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 4px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* === Venue Cards === */
.venues-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.venue-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-normal);
}

.venue-card:hover {
    transform: translateY(-8px);
    border-color: rgba(197, 165, 90, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(197, 165, 90, 0.08);
}

.venue-card-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

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

.venue-card:hover .venue-card-image img {
    transform: scale(1.08);
}

.venue-card-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 4px 14px;
    background: var(--gradient-primary);
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
    letter-spacing: 1px;
}

.venue-card-body {
    padding: 24px;
}

.venue-name {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.venue-specs {
    display: flex;
    gap: 20px;
    margin-bottom: 14px;
}

.spec {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-muted);
}

.spec i {
    font-size: 12px;
    color: var(--color-accent);
}

.venue-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.tag {
    padding: 3px 12px;
    background: rgba(197, 165, 90, 0.08);
    border: 1px solid rgba(197, 165, 90, 0.15);
    border-radius: 50px;
    font-size: 12px;
    color: var(--color-accent);
}

.venue-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* === Advantages === */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage-card {
    text-align: center;
    padding: 40px 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.advantage-card:hover {
    background: rgba(197, 165, 90, 0.05);
    border-color: rgba(197, 165, 90, 0.2);
    transform: translateY(-4px);
}

.advantage-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(197, 165, 90, 0.08);
    border: 1px solid rgba(197, 165, 90, 0.15);
    border-radius: 50%;
    font-size: 28px;
    color: var(--color-accent);
    transition: all var(--transition-normal);
}

.advantage-card:hover .advantage-icon {
    background: rgba(197, 165, 90, 0.15);
    transform: scale(1.1);
    box-shadow: 0 0 30px rgba(197, 165, 90, 0.15);
}

.advantage-title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.advantage-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* === Cases === */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.case-card {
    position: relative;
    height: 260px;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
}

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

.case-card:hover img {
    transform: scale(1.1);
}

.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 15, 26, 0.95) 0%, rgba(15, 15, 26, 0.2) 50%, transparent 100%);
    display: flex;
    align-items: flex-end;
    padding: 24px;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.case-info {
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.case-card:hover .case-info {
    transform: translateY(0);
}

.case-category {
    display: inline-block;
    padding: 3px 12px;
    background: var(--gradient-primary);
    color: var(--text-primary);
    font-size: 11px;
    font-weight: 600;
    border-radius: 50px;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.case-title {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.case-date {
    font-size: 13px;
    color: var(--text-muted);
}

/* === Contact === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
    align-items: start;
}

/* Form */
.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: 40px;
    position: relative;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group label i {
    font-size: 13px;
    color: var(--color-accent);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    background: rgba(197, 165, 90, 0.04);
    box-shadow: 0 0 0 3px rgba(197, 165, 90, 0.08);
}

.form-group select {
    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='%23C5A55A' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
    cursor: pointer;
}

.form-group select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.btn-submit {
    align-self: flex-start;
    margin-top: 8px;
    min-width: 180px;
    justify-content: center;
}

/* Form Validation */
.form-group input.error,
.form-group select.error {
    border-color: #E74C3C;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.form-error {
    font-size: 12px;
    color: #E74C3C;
    display: none;
}

.form-group.has-error .form-error {
    display: block;
}

/* Form Success */
.form-success {
    display: none;
    text-align: center;
    padding: 60px 20px;
}

.form-success.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

.contact-form.hide {
    display: none;
}

.success-icon {
    font-size: 64px;
    color: #2ECC71;
    margin-bottom: 20px;
}

.form-success h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.form-success p {
    color: var(--text-muted);
    margin-bottom: 28px;
}

/* Contact Info */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.info-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(197, 165, 90, 0.08);
    border: 1px solid rgba(197, 165, 90, 0.12);
    border-radius: 50%;
    font-size: 16px;
    color: var(--color-accent);
}

.info-content h4 {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 400;
    margin-bottom: 4px;
}

.info-content a,
.info-content p {
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.4;
}

.info-content a:hover {
    color: var(--color-accent);
}

.info-sub {
    font-size: 12px;
    color: var(--text-muted);
    opacity: 0.7;
}

/* Map Placeholder */
.map-placeholder {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    overflow: hidden;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-inner {
    text-align: center;
    color: var(--text-muted);
}

.map-inner i {
    font-size: 40px;
    color: var(--color-accent);
    margin-bottom: 12px;
    opacity: 0.6;
}

.map-inner p {
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.7;
}

/* === Footer === */
.footer {
    background: var(--bg-dark);
    padding: 64px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo i {
    font-size: 24px;
    color: var(--color-accent);
}

.footer-logo span {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
}

.footer-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a,
.footer-links span {
    font-size: 14px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent);
}

.footer-links i {
    font-size: 12px;
    color: var(--color-accent);
    opacity: 0.7;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    font-size: 13px;
    color: var(--text-muted);
    opacity: 0.6;
}

/* === Back to Top === */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    width: 46px;
    height: 46px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    color: var(--color-accent);
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: rgba(197, 165, 90, 0.15);
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

/* === Animations === */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

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

/* Particle dots */
.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 50%;
    opacity: 0;
    animation: floatParticle 6s infinite;
}

@keyframes floatParticle {
    0% { opacity: 0; transform: translateY(0) scale(0); }
    10% { opacity: 0.6; }
    90% { opacity: 0; }
    100% { opacity: 0; transform: translateY(-200px) scale(1); }
}

/* === Responsive === */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 48px;
        letter-spacing: 6px;
    }

    .venues-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 70px 0;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--glass-bg);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 32px;
        gap: 4px;
        transition: right var(--transition-normal);
        border-left: 1px solid var(--glass-border);
    }

    .nav-menu.open {
        right: 0;
    }

    .nav-link {
        font-size: 16px;
        padding: 12px 0;
        width: 100%;
    }

    .nav-phone {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 36px;
        letter-spacing: 4px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-number {
        font-size: 32px;
    }

    .stat-divider {
        height: 36px;
    }

    .section-title {
        font-size: 28px;
    }

    .venues-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .advantage-card {
        padding: 28px 20px;
    }

    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .case-card {
        height: 200px;
    }

    .case-overlay {
        opacity: 1;
        background: linear-gradient(to top, rgba(15, 15, 26, 0.85) 0%, transparent 60%);
    }

    .case-info {
        transform: translateY(0);
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-form-wrapper {
        padding: 24px;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 4px;
        text-align: center;
    }

    .scroll-indicator {
        display: none;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 30px;
        letter-spacing: 3px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        padding: 12px 28px;
        font-size: 14px;
        justify-content: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .cases-grid {
        grid-template-columns: 1fr;
    }
}

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

    .animate-on-scroll {
        opacity: 1;
        transform: none;
    }

    html {
        scroll-behavior: auto;
    }
}