/*
 * МЕЛ — Арт-пространство
 * Оптимизированные стили с mobile-first подходом
 * Без тяжёлых анимаций для максимальной производительности
 */

/* ==================== CSS Variables ==================== */
:root {
    /* Colors */
    --color-bg: #0a0a0a;
    --color-bg-alt: #141414;
    --color-text: #f5ede3;
    --color-text-muted: #999;
    --color-primary: #4a9d9e;
    --color-accent: #c67557;
    --color-border: #2a2a2a;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-size-base: 16px;
    --line-height: 1.6;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Layout */
    --container-width: 1200px;
    --header-height: 60px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
}

/* ==================== Reset & Base ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: rgba(74, 157, 158, 0.3);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
    max-width: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    max-width: 100vw;
    width: 100%;
}

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

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

ul, ol {
    list-style: none;
}

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

address {
    font-style: normal;
}

/* ==================== Utilities ==================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    box-sizing: border-box;
}

/* Prevent horizontal overflow */
main, section, .section {
    max-width: 100vw;
    overflow-x: hidden;
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all var(--transition-fast);
    text-align: center;
}

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

.btn-primary:hover {
    background-color: #d9826a;
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-bg);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* ==================== Header ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

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

.nav-logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: 0.1em;
}

.nav-menu {
    display: none;
    gap: var(--spacing-md);
}

.nav-menu a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--color-text);
}

.nav-btn {
    display: none;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-bg);
    background-color: var(--color-accent);
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.nav-btn:hover {
    background-color: #d9826a;
    transform: translateY(-1px);
}

.nav-burger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    padding: 4px;
}

.nav-burger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-fast);
}

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

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

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

/* Mobile Menu */
.nav-menu.active {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    gap: var(--spacing-lg);
    align-items: center;
    justify-content: center;
}

.nav-menu.active a {
    font-size: 1.25rem;
    color: var(--color-text);
}

/* ==================== Hero Section ==================== */
.hero {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-sm);
    padding-top: calc(var(--header-height) + var(--spacing-2xl));
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
    max-width: 100%;
    overflow: hidden;
    box-sizing: border-box;
}

.hero-content {
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-title {
    font-size: clamp(1.6rem, 7vw, 4.5rem);
    font-weight: 900;
    letter-spacing: 0;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 60px rgba(74, 157, 158, 0.3);
    text-align: center;
    width: 100%;
    max-width: 100%;
}

.hero-subtitle {
    font-size: clamp(1rem, 4vw, 1.25rem);
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    text-align: center;
}

.hero-description {
    font-size: clamp(0.875rem, 3vw, 1.1rem);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* ==================== About Section ==================== */
.about {
    background-color: var(--color-bg-alt);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.about-text {
    text-align: center;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.about-text p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.about-text strong {
    color: var(--color-primary);
}

.about-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    width: 100%;
}

.about-features li {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
    text-align: left;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.about-features svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

/* ==================== Gallery / Carousel ==================== */
.carousel {
    position: relative;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
    border-radius: 12px;
}

.carousel-track {
    display: flex;
    transition: transform 0.4s ease;
    will-change: transform;
    touch-action: pan-y pinch-zoom;
    -webkit-user-select: none;
    user-select: none;
}

.carousel-slide {
    flex: 0 0 100%;
    min-width: 100%;
    aspect-ratio: 16 / 10;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
    cursor: pointer;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background-color: rgba(0, 0, 0, 0.6);
    border: none;
    border-radius: 50%;
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 10;
}

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

.carousel-btn--prev {
    left: var(--spacing-sm);
}

.carousel-btn--next {
    right: var(--spacing-sm);
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: var(--spacing-sm) 0;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-border);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
}

.carousel-dot.active,
.carousel-dot:hover {
    background-color: var(--color-primary);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 200;
    background-color: rgba(0, 0, 0, 0.95);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.lightbox.active {
    display: flex;
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 44px;
    height: 44px;
    font-size: 2rem;
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-img {
    max-width: 100%;
    max-height: 90vh;
    border-radius: 8px;
}

/* ==================== Prices Section ==================== */
.prices {
    background-color: var(--color-bg-alt);
}

.prices-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    max-width: 400px;
    margin: 0 auto;
}

.price-card {
    position: relative;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: var(--spacing-lg);
    text-align: center;
    width: 100%;
}

.price-card--popular {
    border-color: var(--color-primary);
    background: linear-gradient(180deg, rgba(74, 157, 158, 0.1) 0%, var(--color-bg) 50%);
}

.price-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
    color: var(--color-bg);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.375rem 1rem;
    border-radius: 20px;
}

.price-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.price-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.price-value span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-text-muted);
}

.price-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.price-features li {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.prices-note {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-lg);
}

/* ==================== Contacts Section ==================== */
.contacts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.contacts-info {
    text-align: center;
}

.contacts-info h3,
.contacts-socials h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.contacts-address,
.contacts-hours,
.contacts-phone {
    margin-bottom: var(--spacing-md);
}

.contacts-address p,
.contacts-hours p {
    color: var(--color-text);
    font-size: 1.0625rem;
}

.contacts-phone a {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
}

.contacts-phone a:hover {
    text-decoration: underline;
}

.contacts-booking {
    margin-bottom: var(--spacing-lg);
}

.contacts-booking .btn {
    width: 100%;
    max-width: 280px;
}

/* Social Links */
.socials-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1rem;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.social-link:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.social-link svg {
    width: 24px;
    height: 24px;
}

/* Map */
.contacts-map {
    border-radius: 12px;
    overflow: hidden;
    background-color: var(--color-bg-alt);
    width: 100%;
    max-width: 100%;
}

.contacts-map iframe {
    display: block;
    border-radius: 12px;
    width: 100%;
    max-width: 100%;
}

/* ==================== Footer ==================== */
.footer {
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
}

.footer-copy {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
}

.footer-nav a {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--color-primary);
}

/* ==================== Media Queries ==================== */

/* Tablet (768px+) */
@media (min-width: 768px) {
    :root {
        --spacing-sm: 1.25rem;
        --spacing-md: 2rem;
        --spacing-lg: 2.5rem;
        --spacing-xl: 4rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .nav-menu {
        display: flex;
    }

    .nav-burger {
        display: none;
    }

    .about-content {
        flex-direction: row;
        align-items: flex-start;
    }

    .about-text {
        flex: 1;
        text-align: left;
    }

    .about-features {
        flex: 0 0 45%;
        grid-template-columns: 1fr;
    }

    .about-features li {
        justify-content: flex-start;
    }

    .prices-grid {
        grid-template-columns: repeat(3, 1fr);
        max-width: none;
    }

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

    .contacts-info {
        text-align: left;
    }

    .socials-list {
        justify-content: flex-start;
    }

    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .nav-btn {
        display: flex;
    }

    .price-card {
        padding: var(--spacing-xl);
    }
}

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

    html {
        scroll-behavior: auto;
    }
}

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-bg);
    padding: var(--spacing-xs) var(--spacing-sm);
    z-index: 1000;
}

.skip-link:focus {
    top: 0;
}

/* ==================== Print Styles ==================== */
@media print {
    .header,
    .lightbox,
    .nav-burger {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .hero {
        min-height: auto;
        padding: 2rem 0;
    }

    .section {
        padding: 1rem 0;
    }
}