/* ============================================
   ĐỒNG PHỤC Y TẾ QUỲNH CHÂU - Professional Uniform Website
   Design System & Complete Styles
   ============================================ */

/* ── CSS Custom Properties ── */
:root {
    /* Colors - Elegant navy & medical blue palette */
    --color-primary: #1a5276;
    --color-primary-light: #2e86c1;
    --color-primary-dark: #0e3a54;
    --color-primary-50: #e8f4fd;
    --color-primary-100: #b8d4e8;

    --color-accent: #2e86c1;
    --color-accent-light: #5dade2;

    --color-white: #ffffff;
    --color-gray-50: #f8f9fa;
    --color-gray-100: #f0f2f5;
    --color-gray-200: #e4e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    --color-success: #27ae60;
    --color-danger: #e74c3c;

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-md: 1.125rem;
    --fs-lg: 1.25rem;
    --fs-xl: 1.5rem;
    --fs-2xl: 2rem;
    --fs-3xl: 2.5rem;
    --fs-4xl: 3.25rem;
    --fs-5xl: 4rem;

    --fw-light: 300;
    --fw-normal: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;

    --lh-tight: 1.2;
    --lh-normal: 1.6;
    --lh-relaxed: 1.8;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Layout */
    --container-max: 1200px;
    --container-padding: 1.5rem;

    /* Borders & Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Header */
    --header-height: 72px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-body);
    font-size: var(--fs-base);
    font-weight: var(--fw-normal);
    line-height: var(--lh-normal);
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body.no-scroll {
    overflow: hidden;
}

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

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

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

ul {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-gray-900);
    line-height: var(--lh-tight);
}

/* ── Utilities ── */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--space-24) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-tag {
    display: inline-block;
    font-family: var(--font-body);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-4);
    position: relative;
    padding: var(--space-2) var(--space-5);
    background: var(--color-primary-50);
    border-radius: var(--radius-full);
}

.section-title {
    font-size: var(--fs-3xl);
    font-weight: var(--fw-bold);
    margin-bottom: var(--space-4);
    color: var(--color-gray-900);
}

.section-subtitle {
    font-size: var(--fs-md);
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
    line-height: var(--lh-relaxed);
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-body);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    line-height: 1;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    text-decoration: none;
}

.btn svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-base);
}

.btn:hover svg {
    transform: translateX(3px);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

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

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--fs-base);
    border-radius: var(--radius-md);
}

.btn-full {
    width: 100%;
}

/* ── Preloader ── */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-inner {
    text-align: center;
}

.scissors-icon {
    font-size: 3rem;
    color: var(--color-primary);
    animation: pulseIcon 1s ease-in-out infinite;
}

@keyframes pulseIcon {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.15); opacity: 0.85; }
}

.preloader-text {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    color: var(--color-primary);
    margin-top: var(--space-4);
    font-weight: var(--fw-bold);
    letter-spacing: 0.05em;
}

/* ── Header / Navigation ── */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    transition: all var(--transition-base);
    background: transparent;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    z-index: 1001;
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
    transition: transform var(--transition-base);
}

.nav-logo:hover .logo-icon {
    transform: scale(1.15);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    color: var(--color-gray-900);
    letter-spacing: -0.01em;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-link {
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-gray-600);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

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

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

.nav-link-cta {
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: var(--space-2) var(--space-5) !important;
    border-radius: var(--radius-full);
    margin-left: var(--space-2);
}

.nav-link-cta::after {
    display: none;
}

.nav-link-cta:hover {
    background: var(--color-primary-dark);
    color: var(--color-white) !important;
    transform: translateY(-1px);
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-left: var(--space-3);
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    padding: 2px;
}

.lang-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-1) var(--space-3);
    font-family: var(--font-body);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: var(--color-gray-500);
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: all var(--transition-fast);
    line-height: 1.4;
}

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

.lang-btn.active {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.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 Section ── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fbfe 0%, #e8f0f8 50%, #dce8f4 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(46, 134, 193, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(26, 82, 118, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(46, 134, 193, 0.03) 0%, transparent 70%);
}

.hero-pattern::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(46, 134, 193, 0.04) 0%, transparent 70%);
    animation: floatBubble 20s ease-in-out infinite;
}

.hero-pattern::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(26, 82, 118, 0.04) 0%, transparent 70%);
    animation: floatBubble 15s ease-in-out infinite reverse;
}

@keyframes floatBubble {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
    padding-top: var(--header-height);
    position: relative;
    z-index: 1;
}

.hero-text {
    padding: var(--space-8) 0;
}

.hero-subtitle {
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary-light);
    margin-bottom: var(--space-4);
}

.hero-title {
    font-size: var(--fs-5xl);
    font-weight: var(--fw-bold);
    line-height: 1.1;
    margin-bottom: var(--space-6);
    color: var(--color-gray-900);
}

.hero-title .highlight {
    color: var(--color-primary);
    position: relative;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(46, 134, 193, 0.15);
    border-radius: 4px;
    z-index: -1;
}

.hero-description {
    font-size: var(--fs-md);
    color: var(--color-gray-500);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--space-8);
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.hero-stats {
    display: flex;
    gap: var(--space-10);
}

.stat {
    position: relative;
}

.stat::after {
    content: '';
    position: absolute;
    right: calc(var(--space-10) / -2);
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 40px;
    background: var(--color-gray-200);
}

.stat:last-child::after {
    display: none;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: var(--fs-3xl);
    font-weight: var(--fw-bold);
    color: var(--color-primary);
    display: inline;
}

.stat-suffix {
    font-family: var(--font-heading);
    font-size: var(--fs-2xl);
    font-weight: var(--fw-bold);
    color: var(--color-primary);
}

.stat-label {
    display: block;
    font-size: var(--fs-sm);
    color: var(--color-gray-500);
    margin-top: var(--space-1);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 420px;
}

.hero-image-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-4);
    transform: rotate(2deg);
    transition: transform var(--transition-slow);
}

.hero-image-card:hover {
    transform: rotate(0deg);
}

.hero-illustration {
    width: 100%;
    height: auto;
}

.floating-badge {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--color-white);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-gray-700);
    animation: floatBadge 3s ease-in-out infinite;
}

.badge-quality {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.badge-delivery {
    bottom: 15%;
    right: -8%;
    animation-delay: 1.5s;
}

.badge-icon {
    font-size: 1.25rem;
}

@keyframes floatBadge {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-gray-400);
    font-size: var(--fs-xs);
    text-decoration: none;
    transition: color var(--transition-base);
}

.scroll-indicator:hover {
    color: var(--color-primary);
}

.scroll-arrow {
    width: 20px;
    height: 30px;
    border: 2px solid currentColor;
    border-radius: 10px;
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 8px;
    background: currentColor;
    border-radius: 2px;
    animation: scrollBounce 1.5s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { top: 6px; opacity: 1; }
    50% { top: 14px; opacity: 0.3; }
}

/* ── About Section ── */
.about {
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.about-image-wrapper {
    position: relative;
}

.about-image-placeholder {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image-placeholder svg {
    width: 100%;
    height: auto;
    display: block;
}

.about-experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.experience-number {
    display: block;
    font-family: var(--font-heading);
    font-size: var(--fs-3xl);
    font-weight: var(--fw-bold);
    line-height: 1;
}

.experience-text {
    display: block;
    font-size: var(--fs-sm);
    margin-top: var(--space-1);
    opacity: 0.9;
    line-height: 1.3;
}

.about-content-col .section-tag {
    text-align: left;
}

.about-content-col .section-title {
    text-align: left;
    margin-bottom: var(--space-6);
}

.about-lead {
    font-size: var(--fs-md);
    color: var(--color-gray-700);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--space-4);
}

.about-text {
    color: var(--color-gray-500);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--space-8);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.about-feature {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-50);
    color: var(--color-primary);
    border-radius: var(--radius-md);
}

.about-feature h4 {
    font-family: var(--font-body);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    color: var(--color-gray-800);
    margin-bottom: var(--space-1);
}

.about-feature p {
    font-size: var(--fs-sm);
    color: var(--color-gray-500);
    line-height: var(--lh-normal);
}

/* ── Products Section ── */
.products {
    background: var(--color-gray-50);
}

.product-filter {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-10);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--space-2) var(--space-5);
    font-family: var(--font-body);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-gray-500);
    background: var(--color-white);
    border: 1.5px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary-100);
}

.filter-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-100);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.product-card.hidden {
    display: none;
}

.product-image {
    position: relative;
    overflow: hidden;
}

.product-image svg {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-image svg {
    transform: scale(1.05);
}

.product-badge {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    padding: var(--space-1) var(--space-3);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    border-radius: var(--radius-full);
    color: var(--color-white);
}

.product-badge-hot {
    background: var(--color-danger);
}

.product-info {
    padding: var(--space-5);
}

.product-name {
    font-family: var(--font-body);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    color: var(--color-gray-800);
    margin-bottom: var(--space-2);
}

.product-desc {
    font-size: var(--fs-sm);
    color: var(--color-gray-500);
    line-height: var(--lh-normal);
    margin-bottom: var(--space-4);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.product-category-tag {
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    color: var(--color-primary-light);
    background: var(--color-primary-50);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
}

.product-link {
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-primary);
    transition: all var(--transition-fast);
}

.product-link:hover {
    color: var(--color-primary-dark);
    transform: translateX(4px);
    display: inline-block;
}

/* ── Process Section ── */
.process {
    background: var(--color-white);
}

.process-timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-12);
}

.process-line {
    position: absolute;
    top: 40px;
    left: 12.5%;
    right: 12.5%;
    height: 2px;
    background: var(--color-gray-200);
    z-index: 0;
}

.process-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--color-primary);
    transition: width 1s ease;
}

.process-timeline.animated .process-line::after {
    width: 100%;
}

.process-step {
    position: relative;
    text-align: center;
    z-index: 1;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--color-white);
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    margin-bottom: var(--space-6);
    transition: all var(--transition-base);
}

.process-step:hover .step-number {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
}

.step-content {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.process-step:hover .step-content {
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
}

.step-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--color-primary-50);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
}

.step-content h3 {
    font-family: var(--font-body);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    color: var(--color-gray-800);
    margin-bottom: var(--space-3);
}

.step-content p {
    font-size: var(--fs-sm);
    color: var(--color-gray-500);
    line-height: var(--lh-relaxed);
}

/* ── Gallery Section ── */
.gallery {
    background: var(--color-gray-50);
}

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

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 1;
}

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

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

.gallery-placeholder {
    width: 100%;
    height: 100%;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    transition: transform var(--transition-slow);
}

.gallery-placeholder span {
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-gray-600);
    opacity: 0.8;
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(26, 82, 118, 0.9) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-6);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.gallery-item:hover .gallery-placeholder {
    transform: scale(1.08);
}

.gallery-overlay h4 {
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    margin-bottom: var(--space-1);
}

.gallery-overlay p {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--fs-sm);
}

/* ── Testimonials Section ── */
.testimonials {
    background: var(--color-white);
}

.testimonial-slider {
    position: relative;
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}

.testimonial-track {
    display: flex;
    transition: transform var(--transition-slow);
}

.testimonial-card {
    flex: 0 0 100%;
    padding: var(--space-10) var(--space-8);
    text-align: center;
}

.testimonial-rating {
    color: #f1c40f;
    font-size: var(--fs-lg);
    margin-bottom: var(--space-6);
    letter-spacing: 4px;
}

.testimonial-text {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    font-style: italic;
    color: var(--color-gray-700);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--space-8);
    position: relative;
}

.testimonial-text::before {
    content: '\201C';
    font-size: 4rem;
    color: var(--color-primary-100);
    font-family: var(--font-heading);
    position: absolute;
    top: -20px;
    left: -10px;
    line-height: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
}

.author-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--color-primary-50);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--fw-bold);
    font-size: var(--fs-sm);
}

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

.author-info strong {
    display: block;
    font-family: var(--font-body);
    font-size: var(--fs-base);
    color: var(--color-gray-800);
}

.author-info span {
    font-size: var(--fs-sm);
    color: var(--color-gray-500);
}

.testimonial-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.testimonial-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border: 1.5px solid var(--color-gray-200);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--color-gray-600);
}

.testimonial-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.testimonial-dots {
    display: flex;
    gap: var(--space-2);
}

.testimonial-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-gray-300);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    padding: 0;
}

.testimonial-dot.active {
    background: var(--color-primary);
    width: 24px;
    border-radius: 4px;
}

/* ── CTA Section ── */
.cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
}

.cta::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta h2 {
    font-size: var(--fs-3xl);
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.cta p {
    font-size: var(--fs-md);
    opacity: 0.85;
    margin-bottom: var(--space-8);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

.cta .btn-primary {
    background: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
}

.cta .btn-primary:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ── Contact Section ── */
.contact {
    background: var(--color-gray-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: var(--space-12);
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-card {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
    padding: var(--space-5);
    background: var(--color-white);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-100);
}

.contact-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.contact-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-50);
    color: var(--color-primary);
    border-radius: var(--radius-md);
}

.contact-card h4 {
    font-family: var(--font-body);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-gray-800);
    margin-bottom: var(--space-1);
}

.contact-card p {
    font-size: var(--fs-sm);
    color: var(--color-gray-500);
    line-height: var(--lh-normal);
}

.contact-card a {
    color: var(--color-gray-500);
}

.contact-card a:hover {
    color: var(--color-primary);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-100);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}

.required {
    color: var(--color-danger);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-body);
    font-size: var(--fs-sm);
    color: var(--color-gray-700);
    background: var(--color-gray-50);
    border: 1.5px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary-light);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(46, 134, 193, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}

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

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%236b7280' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: var(--space-10);
}

.contact-form .btn {
    margin-top: var(--space-2);
}

/* Form Success State */
.form-success {
    text-align: center;
    padding: var(--space-12) var(--space-8);
}

.form-success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-6);
    background: #d4edda;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-success);
}

.form-success h3 {
    font-family: var(--font-body);
    margin-bottom: var(--space-3);
}

.form-success p {
    color: var(--color-gray-500);
}

/* ── Footer ── */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    margin-bottom: var(--space-4);
}

.footer-logo .logo-icon {
    color: var(--color-white);
}

.footer-logo .logo-text {
    color: var(--color-gray-200);
}

.footer-logo .logo-text strong {
    color: var(--color-white);
}

.footer-brand p {
    font-size: var(--fs-sm);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--space-6);
    color: var(--color-gray-500);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.07);
    color: var(--color-gray-400);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-body);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-white);
    margin-bottom: var(--space-5);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    font-size: var(--fs-sm);
    color: var(--color-gray-500);
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
    padding-left: 4px;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--fs-sm);
    margin-bottom: var(--space-3);
    color: var(--color-gray-500);
}

.footer-contact svg {
    flex-shrink: 0;
    color: var(--color-gray-500);
}

.footer-contact a {
    color: var(--color-gray-500);
}

.footer-contact a:hover {
    color: var(--color-white);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--fs-sm);
    color: var(--color-gray-600);
}

/* ── Back to Top ── */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 100;
}

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

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
}

/* ── Floating Contact ── */
.float-contact {
    position: fixed;
    bottom: var(--space-6);
    left: var(--space-6);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.float-btn {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--color-white);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.float-phone {
    background: var(--color-success);
    animation: phoneRing 2s ease-in-out infinite;
}

.float-phone:hover {
    background: #219a52;
    transform: scale(1.1);
    color: var(--color-white);
}

@keyframes phoneRing {
    0%, 100% { transform: rotate(0deg); }
    10% { transform: rotate(-10deg); }
    20% { transform: rotate(10deg); }
    30% { transform: rotate(-10deg); }
    40% { transform: rotate(0deg); }
}

/* ── Scroll Animations ── */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ── Responsive ── */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --fs-5xl: 3rem;
        --fs-4xl: 2.5rem;
        --fs-3xl: 2rem;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-10);
    }

    .hero-description {
        max-width: 100%;
        margin: 0 auto var(--space-8);
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .hero-image-wrapper {
        max-width: 320px;
        margin: 0 auto;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }

    .about-content-col .section-tag,
    .about-content-col .section-title {
        text-align: center;
    }

    .about-lead,
    .about-text {
        text-align: center;
    }

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

    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }

    .process-line {
        display: none;
    }

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

    .gallery-item-large {
        grid-column: span 2;
        grid-row: span 1;
        aspect-ratio: 2;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --fs-5xl: 2.25rem;
        --fs-3xl: 1.75rem;
        --fs-2xl: 1.5rem;
        --header-height: 64px;
    }

    .section {
        padding: var(--space-16) 0;
    }

    /* Mobile Navigation */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        align-items: stretch;
        padding: calc(var(--header-height) + var(--space-8)) var(--space-6) var(--space-6);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
        transition: right var(--transition-base);
        gap: var(--space-1);
    }

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

    .nav-link {
        padding: var(--space-3) var(--space-4);
        font-size: var(--fs-base);
    }

    .nav-link::after {
        display: none;
    }

    .nav-link-cta {
        text-align: center;
        margin-left: 0;
        margin-top: var(--space-4);
    }

    /* Mobile overlay */
    .nav-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-4);
        align-items: center;
    }

    .stat::after {
        display: none;
    }

    .floating-badge {
        display: none;
    }

    .product-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .process-timeline {
        grid-template-columns: 1fr;
    }

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

    .gallery-item-large,
    .gallery-item-wide {
        grid-column: span 1;
    }

    .gallery-item-large {
        aspect-ratio: 16/9;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .cta h2 {
        font-size: var(--fs-2xl);
    }

    .testimonial-card {
        padding: var(--space-6) var(--space-4);
    }

    .testimonial-text {
        font-size: var(--fs-md);
    }
}

/* Small mobile */
@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
    }

    .product-filter {
        gap: var(--space-1);
    }

    .filter-btn {
        padding: var(--space-2) var(--space-3);
        font-size: var(--fs-xs);
    }
}

/* ── Print Styles ── */
@media print {
    .header,
    .preloader,
    .back-to-top,
    .float-contact,
    .hero-scroll,
    .testimonial-nav {
        display: none !important;
    }

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

    .section {
        padding: 1.5rem 0;
        break-inside: avoid;
    }
}

/* ── 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-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Selection */
::selection {
    background: var(--color-primary-100);
    color: var(--color-primary-dark);
}