/* ================================
   Qizhou Clothing - Website Styles
   Responsive | Bilingual | Minimal Fashion
   ================================ */

:root {
    --primary: #111111;
    --primary-dark: #000000;
    --primary-light: #f0f0f0;
    --accent: #c9a96e;
    --text: #1a1a1a;
    --text-light: #666666;
    --bg: #ffffff;
    --bg-alt: #f8f8f8;
    --border: #eeeeee;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-family: inherit;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}

.btn-block {
    width: 100%;
}

/* ================================
   Header
   ================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.header.scrolled {
    border-bottom-color: var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    font-size: 18px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 13px;
    letter-spacing: 1px;
    font-weight: 600;
}

/* Nav */
.nav-list {
    display: flex;
    list-style: none;
    gap: 4px;
}

.nav-list a {
    display: block;
    padding: 8px 12px;
    text-decoration: none;
    color: var(--text-light);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-list a:hover {
    color: var(--primary);
    background: var(--primary-light);
}

/* Header actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    color: var(--text);
    transition: var(--transition);
    font-family: inherit;
}

.lang-switch:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.lang-sep {
    color: var(--border);
}

.lang-alt {
    color: var(--text-light);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ================================
   Hero
   ================================ */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 100vh;
    padding: 140px 0 100px;
    overflow: hidden;
    background: var(--bg-alt);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #fafafa 0%, #f0f0f0 100%);
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(201,169,110,0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0,0,0,0.03) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
}

.hero-title {
    font-size: clamp(38px, 5.5vw, 64px);
    font-weight: 700;
    line-height: 1.1;
    color: var(--text);
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--text-light);
    margin-bottom: 40px;
    max-width: 560px;
    line-height: 1.7;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ================================
   Stats
   ================================ */
.stats {
    padding: 60px 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-item {
    text-align: center;
    padding: 24px;
}

.stat-number {
    font-size: 40px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.stat-number span {
    font-size: 24px;
    font-weight: 500;
    color: var(--accent);
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
}

/* ================================
   Sections
   ================================ */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--bg-alt);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-light);
    background: transparent;
    border: 1px solid var(--border);
    padding: 6px 18px;
    border-radius: 20px;
    margin-bottom: 18px;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(28px, 3.5vw, 40px);
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text);
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 17px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ================================
   About
   ================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-visual {
    position: relative;
}

.about-image {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--primary-light);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.about-image:hover img {
    transform: scale(1.03);
}

.about-content h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text);
    letter-spacing: -0.01em;
}

.about-content p {
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-features {
    margin-top: 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text);
    font-weight: 500;
}

.feature-icon {
    width: 22px;
    height: 22px;
    color: var(--accent);
    flex-shrink: 0;
}

/* ================================
   Gallery
   ================================ */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--primary-light);
    cursor: pointer;
}

.gallery-item:nth-child(1) {
    grid-column: span 2;
    grid-row: span 2;
    aspect-ratio: auto;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

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

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay span {
    color: #fff;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* ================================
   Services
   ================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-icon {
    width: 48px;
    height: 48px;
    color: var(--primary);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text);
}

.service-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ================================
   Process
   ================================ */
.process-list {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    align-items: start;
}

.process-item {
    text-align: center;
    padding: 24px 16px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.process-num {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.5;
    margin-bottom: 12px;
    line-height: 1;
}

.process-body h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}

.process-body p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

.process-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 32px;
}

.process-arrow::after {
    content: '';
    width: 8px;
    height: 8px;
    border-top: 2px solid var(--border);
    border-right: 2px solid var(--border);
    transform: rotate(45deg);
}

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

.equip-card {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.equip-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.equip-visual {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px;
}

.equip-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}

.equip-card p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ================================
   Quality
   ================================ */
.quality-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 48px;
}

.quality-item {
    text-align: center;
    padding: 36px 28px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.quality-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.quality-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text);
}

.quality-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

.certs {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cert-item {
    padding: 10px 24px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 14px;
    color: var(--text-light);
    font-weight: 500;
}

/* ================================
   Contact
   ================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: start;
    max-width: 640px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.info-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.info-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.info-item h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text);
}

.info-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* Map */
.map-section {
    margin-top: 60px;
}

.map-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 20px;
    text-align: center;
}

.map-container {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    line-height: 0;
}

.map-container iframe {
    width: 100%;
    height: 420px;
    border: 0;
    filter: grayscale(0.2);
}

/* ================================
   Footer
   ================================ */
.footer {
    background: var(--primary);
    color: rgba(255,255,255,0.6);
    padding: 40px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: #fff;
}

.footer-brand .logo-icon {
    background: var(--accent);
}

.footer-copy {
    font-size: 14px;
}

/* ================================
   Responsive - Tablet
   ================================ */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .about-visual {
        max-width: 500px;
        margin: 0 auto;
    }
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .gallery-item:nth-child(1) {
        grid-column: span 2;
        grid-row: span 1;
        aspect-ratio: 4/3;
    }
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .equipment-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .process-list {
        grid-template-columns: repeat(3, 1fr);
    }
    .process-arrow:nth-child(4),
    .process-arrow:nth-child(6) {
        display: none;
    }
    .quality-list {
        grid-template-columns: 1fr;
    }
}

/* ================================
   Responsive - Mobile
   ================================ */
@media (max-width: 768px) {
    .container {
        padding: 0 18px;
    }
    .section {
        padding: 60px 0;
    }
    .section-header {
        margin-bottom: 40px;
    }

    /* Mobile nav */
    .menu-toggle {
        display: flex;
    }
    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(12px);
        padding: 24px;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 999;
    }
    .nav.open {
        transform: translateX(0);
    }
    .nav-list {
        flex-direction: column;
        gap: 4px;
    }
    .nav-list a {
        padding: 14px 16px;
        font-size: 16px;
        border-radius: var(--radius-sm);
    }

    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }
    .hero-actions {
        flex-direction: column;
    }
    .hero-actions .btn {
        width: 100%;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .stat-item {
        padding: 16px;
    }
    .stat-number {
        font-size: 28px;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
    }
    .gallery-item:nth-child(1) {
        grid-column: span 1;
        grid-row: span 1;
        aspect-ratio: 4/3;
    }

    .services-grid,
    .equipment-grid {
        grid-template-columns: 1fr;
    }

    .process-list {
        grid-template-columns: 1fr;
    }
    .process-arrow {
        display: none;
    }
    .process-item {
        display: flex;
        align-items: center;
        gap: 16px;
        text-align: left;
        padding: 20px;
    }
    .process-num {
        margin-bottom: 0;
        font-size: 24px;
        min-width: 40px;
    }

    .map-container iframe {
        height: 300px;
    }

    .certs {
        flex-direction: column;
        align-items: center;
    }
    .cert-item {
        width: 100%;
        text-align: center;
    }

    .footer-inner {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* ================================
   Utility
   ================================ */
@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;
    }
}