/* ============================================
   USTA İNŞAAT - СТРОИТЕЛЬНАЯ КОМПАНИЯ
   Premium Дизайн | Адаптивный | Русский
   ============================================ */

/* ----- ПЕРЕМЕННЫЕ ----- */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111122;
    --bg-card: #1a1a2e;
    --bg-card-hover: #222244;
    --text-primary: #ffffff;
    --text-secondary: #b8b8d0;
    --text-muted: #666688;
    --gradient-1: linear-gradient(135deg, #00d4ff, #7b2ffc);
    --gradient-2: linear-gradient(135deg, #f093fb, #f5576c);
    --gradient-3: linear-gradient(135deg, #4facfe, #00f2fe);
    --gradient-4: linear-gradient(135deg, #43e97b, #38f9d7);
    --accent-1: #00d4ff;
    --accent-2: #7b2ffc;
    --accent-3: #f5576c;
    --border-color: rgba(255, 255, 255, 0.06);
    --shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 60px rgba(0, 212, 255, 0.1);
    --radius: 20px;
    --radius-sm: 10px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ----- СБРОС ----- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 1rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ----- СКРОЛЛБАР ----- */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--gradient-1);
    border-radius: 3px;
}

/* ----- ТИПОГРАФИЯ ----- */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
}
h1 {
    font-size: clamp(2rem, 7vw, 4.5rem);
}
h2 {
    font-size: clamp(1.8rem, 4.5vw, 3rem);
}
h3 {
    font-size: clamp(1.2rem, 2.5vw, 1.7rem);
}
h4 {
    font-size: clamp(1rem, 2vw, 1.2rem);
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.gradient-text-2 {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

p {
    color: var(--text-secondary);
    max-width: 65ch;
}

/* ----- КОНТЕЙНЕР ----- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ----- ЗАГРУЗКА ----- */
#loader {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.8s, visibility 0.8s;
}
#loader.hidden {
    opacity: 0;
    visibility: hidden;
}
.loader-spinner {
    width: 60px;
    height: 60px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-1);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
.loader-text {
    position: absolute;
    margin-top: 80px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ----- КНОПКИ ----- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    background: var(--gradient-1);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
    touch-action: manipulation;
    text-decoration: none;
}
.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-2);
    opacity: 0;
    transition: var(--transition);
}
.btn-primary:hover::before {
    opacity: 1;
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}
.btn-primary span {
    position: relative;
    z-index: 1;
}
.btn-primary:active {
    transform: scale(0.96);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    background: transparent;
    color: var(--accent-1);
    border: 2px solid var(--accent-1);
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    touch-action: manipulation;
    text-decoration: none;
}
.btn-outline:hover {
    background: var(--accent-1);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.2);
}
.btn-outline:active {
    transform: scale(0.96);
}

/* ----- НАВИГАЦИЯ ----- */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}
header.scrolled {
    padding: 10px 0;
    background: rgba(10, 10, 10, 0.95);
    box-shadow: var(--shadow);
}

.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    flex-shrink: 0;
    text-decoration: none;
}
.logo .gradient-text {
    font-size: 1.6rem;
}

/* Мобильное меню */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
    touch-action: manipulation;
    z-index: 1001;
}
.menu-toggle span {
    display: block;
    width: 28px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}
.nav-links a {
    padding: 8px 16px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
    text-decoration: none;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after {
    width: 60%;
}
.nav-links a:hover {
    color: var(--text-primary);
}
.nav-links a.active {
    color: var(--accent-1);
}
.nav-links a.contact-nav {
    background: var(--gradient-1);
    color: #fff;
    padding: 8px 20px;
    white-space: nowrap;
}
.nav-links a.contact-nav::after {
    display: none;
}
.nav-links a.contact-nav:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

/* ----- ГЛАВНЫЙ ЭКРАН ----- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 60px;
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 20% 50%, rgba(0, 212, 255, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(123, 47, 252, 0.06) 0%, transparent 60%);
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    margin-bottom: 12px;
}
.hero-text p {
    font-size: 1.1rem;
    margin-bottom: 28px;
}
.hero-text .btn-group {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-top: 40px;
    flex-wrap: wrap;
}
.hero-stats .stat .number {
    font-size: 2.5rem;
    font-weight: 900;
    display: block;
    line-height: 1;
}
.hero-stats .stat .label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

.hero-image {
    position: relative;
}
.hero-image .image-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
    overflow: hidden;
}
.hero-image .image-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 40%, rgba(0, 212, 255, 0.05) 0%, transparent 60%);
}
.hero-image .floating-badge {
    position: absolute;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    font-size: 0.8rem;
    box-shadow: var(--shadow);
    animation: float 3s ease-in-out infinite;
    backdrop-filter: blur(10px);
}
.hero-image .floating-badge:nth-child(2) {
    top: 8%;
    right: -8%;
    animation-delay: 0.5s;
}
.hero-image .floating-badge:nth-child(3) {
    bottom: 12%;
    left: -6%;
    animation-delay: 1s;
}
.hero-image .floating-badge i {
    margin-right: 6px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

/* ----- СЕКЦИИ ----- */
section {
    padding: 80px 0;
    position: relative;
    z-index: 1;
}

.section-title {
    text-align: center;
    margin-bottom: 48px;
}
.section-title h2 {
    margin-bottom: 6px;
}
.section-title p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ----- УСЛУГИ ----- */
.services-section {
    background: var(--bg-secondary);
}
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px 24px 28px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    touch-action: manipulation;
    text-decoration: none;
    color: inherit;
    display: block;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}
.service-card:hover::before {
    transform: scaleX(1);
}
.service-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent-1);
    box-shadow: var(--shadow-glow);
    background: var(--bg-card-hover);
}
.service-card .icon {
    font-size: 2.4rem;
    margin-bottom: 10px;
    display: block;
}
.service-card .icon i {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.service-card h3 {
    margin-bottom: 4px;
}
.service-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.service-card .link-arrow {
    display: inline-block;
    margin-top: 12px;
    font-weight: 700;
    font-size: 0.9rem;
}
.service-card .link-arrow i {
    transition: var(--transition);
}
.service-card:hover .link-arrow i {
    transform: translateX(6px);
}

/* ----- ПРОЕКТЫ ----- */
.projects-section {
    background: var(--bg-primary);
}
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.project-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    touch-action: manipulation;
    text-decoration: none;
    color: inherit;
    display: block;
}
.project-item:hover {
    transform: translateY(-6px);
    border-color: var(--accent-2);
    box-shadow: var(--shadow-glow);
}
.project-img {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    position: relative;
    overflow: hidden;
}
.project-img .overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.8));
}
.project-img .project-icon {
    position: relative;
    z-index: 1;
}
.project-info {
    padding: 20px 22px 24px;
}
.project-info h4 {
    margin-bottom: 4px;
    font-size: 1.05rem;
}
.project-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.project-info .link-arrow {
    display: inline-block;
    margin-top: 10px;
    font-weight: 700;
    font-size: 0.9rem;
}
.project-info .link-arrow i {
    transition: var(--transition);
}
.project-item:hover .link-arrow i {
    transform: translateX(6px);
}

/* ----- О НАС ----- */
.about-section {
    background: var(--bg-secondary);
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}
.about-text p {
    margin-bottom: 16px;
}
.about-list {
    list-style: none;
    margin: 18px 0;
}
.about-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}
.about-list li i {
    font-size: 1rem;
    width: 24px;
    flex-shrink: 0;
}
.about-list li i.fa-check-circle {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.about-image {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    position: relative;
    overflow: hidden;
}
.about-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 60% 40%, rgba(0, 212, 255, 0.05) 0%, transparent 60%);
}

/* ----- КОНТАКТЫ ----- */
.contact-section {
    background: var(--bg-primary);
}
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 40px;
}
.contact-info p {
    margin-bottom: 24px;
}
.contact-detail {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}
.contact-detail i {
    font-size: 1.2rem;
    width: 32px;
    text-align: center;
    flex-shrink: 0;
}
.contact-detail i.fa-phone-alt {
    color: var(--accent-1);
}
.contact-detail i.fa-whatsapp {
    color: #25d366;
}
.contact-detail i.fa-envelope {
    color: var(--accent-2);
}
.contact-detail i.fa-map-marker-alt {
    color: var(--accent-3);
}
.contact-detail div strong {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
}
.contact-detail div span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    margin-bottom: 12px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: var(--transition);
    font-family: var(--font);
    -webkit-appearance: none;
}
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--accent-1);
    outline: none;
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.1);
}
.contact-form textarea {
    min-height: 110px;
    resize: vertical;
}
.contact-form .btn-primary {
    width: 100%;
    justify-content: center;
}

/* ----- ПОДВАЛ ----- */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 40px 0 28px;
}
.footer-flex {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
}
.footer-logo {
    font-size: 1.4rem;
    font-weight: 900;
}
.footer-links {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}
.footer-links a {
    color: var(--text-secondary);
    transition: var(--transition);
    font-size: 0.9rem;
    text-decoration: none;
}
.footer-links a:hover {
    color: var(--accent-1);
}
.footer-social {
    display: flex;
    gap: 14px;
}
.footer-social a {
    color: var(--text-secondary);
    font-size: 1.3rem;
    transition: var(--transition);
}
.footer-social a:hover {
    color: var(--accent-1);
    transform: translateY(-3px);
}
.copyright {
    text-align: center;
    margin-top: 28px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ----- СТРАНИЦЫ ----- */
.page-header {
    padding: 140px 0 50px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}
.page-header p {
    margin: 0 auto;
    font-size: 1.05rem;
}

.detail-page {
    padding: 50px 0;
    background: var(--bg-primary);
}
.detail-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}
.detail-content p {
    margin-bottom: 14px;
}
.detail-meta {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
}
.detail-meta .price {
    font-size: 2rem;
    font-weight: 900;
}
.detail-meta .price-note {
    color: var(--text-secondary);
    font-size: 0.85rem;
}
.detail-meta ul {
    list-style: none;
    margin-top: 14px;
}
.detail-meta ul li {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}
.detail-meta ul li:last-child {
    border-bottom: none;
}
.detail-meta ul li .label {
    font-weight: 600;
}
.detail-meta ul li .value {
    color: var(--text-secondary);
}
.detail-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 20px 0;
}
.detail-gallery .gallery-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 2rem;
}
.detail-video {
    margin: 20px 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
}
.detail-video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}
.back-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
}

/* ----- АНИМАЦИИ ----- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal-left.visible {
    opacity: 1;
    transform: translateX(0);
}
.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal-right.visible {
    opacity: 1;
    transform: translateX(0);
}
.reveal-scale {
    opacity: 0;
    transform: scale(0.85);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal-scale.visible {
    opacity: 1;
    transform: scale(1);
}

/* ----- КНОПКА ВВЕРХ ----- */
#back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--gradient-1);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px) scale(0.8);
    z-index: 999;
    touch-action: manipulation;
}
#back-to-top.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}
#back-to-top:hover {
    transform: scale(1.08) translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}
#back-to-top:active {
    transform: scale(0.92);
}

/* ============================================
   АДАПТИВНОСТЬ (МОБИЛЬНЫЙ ПРИОРИТЕТ)
   ============================================ */

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    .hero-text p {
        margin: 0 auto 24px;
    }
    .hero-text .btn-group {
        justify-content: center;
    }
    .hero-stats {
        justify-content: center;
    }
    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    .about-list li {
        justify-content: center;
    }
    .contact-wrapper {
        grid-template-columns: 1fr;
        padding: 28px;
    }
    .detail-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .hero-image .floating-badge {
        display: none;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        padding: 80px 24px 40px;
        gap: 8px;
        transform: translateX(100%);
        transition: var(--transition);
        opacity: 0;
        z-index: 1000;
        overflow-y: auto;
    }
    .nav-links.open {
        transform: translateX(0);
        opacity: 1;
    }
    .nav-links a {
        padding: 14px 20px;
        width: 100%;
        text-align: center;
        font-size: 1.1rem;
        border-radius: var(--radius-sm);
        white-space: normal;
    }
    .nav-links a::after {
        display: none;
    }
    .nav-links a.contact-nav {
        margin-top: 10px;
        padding: 14px 20px;
    }

    .hero {
        padding: 100px 0 40px;
        min-height: auto;
    }
    .hero-text h1 {
        font-size: 2.2rem;
    }
    .hero-text p {
        font-size: 1rem;
    }
    .hero-text .btn-group {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }
    .hero-text .btn-group .btn-primary,
    .hero-text .btn-group .btn-outline {
        width: 100%;
        justify-content: center;
        padding: 14px 20px;
        font-size: 0.9rem;
    }
    .hero-stats {
        gap: 20px;
        justify-content: center;
    }
    .hero-stats .stat .number {
        font-size: 2rem;
    }
    .hero-stats .stat .label {
        font-size: 0.7rem;
    }
    .hero-image .image-wrapper {
        min-height: 220px;
        font-size: 3rem;
        padding: 20px;
    }

    section {
        padding: 50px 0;
    }
    .section-title {
        margin-bottom: 32px;
    }
    .section-title h2 {
        font-size: 1.8rem;
    }
    .section-title p {
        font-size: 0.95rem;
    }

    .service-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .service-card {
        padding: 24px 20px;
    }
    .service-card .icon {
        font-size: 2rem;
    }
    .service-card h3 {
        font-size: 1.1rem;
    }
    .service-card p {
        font-size: 0.85rem;
    }

    .project-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .project-img {
        height: 180px;
        font-size: 3rem;
    }
    .project-info {
        padding: 16px 18px 20px;
    }
    .project-info h4 {
        font-size: 1rem;
    }
    .project-info p {
        font-size: 0.85rem;
    }

    .about-image {
        min-height: 200px;
        font-size: 4rem;
    }

    .contact-wrapper {
        padding: 20px 16px;
        gap: 24px;
    }
    .contact-detail {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
    .contact-detail i {
        font-size: 1rem;
        width: 28px;
    }
    .contact-form input,
    .contact-form textarea {
        padding: 10px 14px;
        font-size: 0.9rem;
    }

    .page-header {
        padding: 120px 0 30px;
    }
    .page-header h1 {
        font-size: 2rem;
    }
    .page-header p {
        font-size: 0.95rem;
    }

    .detail-page {
        padding: 30px 0;
    }
    .detail-gallery {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    .detail-gallery .gallery-item {
        min-height: 100px;
        font-size: 1.8rem;
    }
    .detail-meta {
        padding: 18px;
    }
    .detail-meta .price {
        font-size: 1.6rem;
    }

    .footer-flex {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 16px;
    }
    .footer-links {
        justify-content: center;
        gap: 12px;
    }
    .footer-links a {
        font-size: 0.85rem;
    }
    .footer-social {
        justify-content: center;
    }

    #back-to-top {
        width: 40px;
        height: 40px;
        font-size: 0.9rem;
        bottom: 16px;
        right: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }

    .logo {
        font-size: 1.2rem;
    }
    .logo .gradient-text {
        font-size: 1.3rem;
    }

    .hero-text h1 {
        font-size: 1.8rem;
    }
    .hero-text p {
        font-size: 0.9rem;
    }
    .hero-stats .stat .number {
        font-size: 1.6rem;
    }

    .service-card {
        padding: 20px 16px;
    }
    .project-img {
        height: 160px;
    }

    .detail-gallery {
        grid-template-columns: 1fr;
    }
    .detail-gallery .gallery-item {
        min-height: 80px;
    }

    .contact-wrapper {
        padding: 16px 12px;
    }

    .page-header h1 {
        font-size: 1.6rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}
:focus-visible {
    outline: 3px solid var(--accent-1);
    outline-offset: 2px;
}
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-1);
    color: #fff;
    padding: 10px 20px;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    z-index: 9999;
    font-size: 0.9rem;
}
.skip-link:focus {
    top: 0;
}