/* ============================================
   HUIZHONG RESOURCES - Corporate Website Styles
   ============================================ */

/* CSS Variables */
:root {
    --primary: #0A4D8C;
    --primary-dark: #073A6A;
    --primary-light: #1E6BAC;
    --accent: #00B4D8;
    --accent-dark: #0096B7;
    --accent-light: #48CAE4;
    --dark: #0F1419;
    --gray-900: #1A1F2E;
    --gray-800: #2D3340;
    --gray-700: #4A5260;
    --gray-600: #6B7280;
    --gray-500: #9CA3AF;
    --gray-400: #D1D5DB;
    --gray-300: #E5E7EB;
    --gray-200: #F3F4F6;
    --gray-100: #F9FAFB;
    --white: #FFFFFF;
    --success: #10B981;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.18);
    --font-heading: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    color: var(--gray-800);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--white);
}

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

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0.3px;
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    box-shadow: 0 4px 14px rgba(10, 77, 140, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    box-shadow: 0 6px 20px rgba(10, 77, 140, 0.4);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* Section Header */
.section-header {
    margin-bottom: 56px;
}

.section-header.center {
    text-align: center;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(10, 77, 140, 0.08), rgba(0, 180, 216, 0.08));
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 100px;
    margin-bottom: 20px;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 42px;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.section-header.center h2 {
    max-width: 700px;
    margin: 0 auto;
}

.section-desc {
    font-size: 18px;
    color: var(--gray-600);
    margin-top: 16px;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-light), var(--accent), var(--white));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: all var(--transition);
    padding: 18px 0;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06), var(--shadow-md);
    padding: 12px 0;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: var(--white);
    color: var(--primary);
    border-radius: 10px;
    padding: 5px;
    box-shadow: 0 4px 12px rgba(10, 77, 140, 0.25);
    flex-shrink: 0;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    display: block;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 16px;
    color: var(--white);
    letter-spacing: 0.5px;
    transition: color var(--transition);
}

.navbar.scrolled .logo-text {
    color: var(--gray-900);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 4px;
    align-items: center;
}

.nav-menu li a {
    display: block;
    padding: 8px 16px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.navbar.scrolled .nav-menu li a {
    color: var(--gray-700);
}

.nav-menu li a:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

.navbar.scrolled .nav-menu li a:hover {
    color: var(--primary);
    background: rgba(10, 77, 140, 0.06);
}

.nav-cta {
    padding: 10px 24px;
    font-size: 14px;
}

.navbar.scrolled .nav-cta {
    color: var(--white);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all var(--transition);
}

.navbar.scrolled .hamburger span {
    background: var(--gray-800);
}

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

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

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

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

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(7, 58, 106, 0.85) 0%, rgba(10, 77, 140, 0.7) 40%, rgba(0, 180, 216, 0.3) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 120px 24px 80px;
    color: var(--white);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
    max-width: 680px;
    margin: 0 auto 40px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    margin-top: 64px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.stat {
    text-align: center;
}

.stat-num {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
}

.stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 6px;
    letter-spacing: 0.3px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 8px;
}

.scroll-indicator span {
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 2px;
    animation: scrollDot 1.5s infinite;
}

@keyframes scrollDot {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(12px); opacity: 0; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   About Section
   ============================================ */
.about {
    padding: 120px 0;
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.about-text {
    padding-right: 16px;
}

.about-lead {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-900);
    line-height: 1.5;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, rgba(10, 77, 140, 0.08), rgba(0, 180, 216, 0.08));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.feature-icon svg {
    width: 20px;
    height: 20px;
}

.about-feature span {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
}

.about-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity var(--transition);
}

.about-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: transparent;
}

.about-card:hover::before {
    opacity: 1;
}

.about-card-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    margin-bottom: 16px;
}

.about-card-icon svg {
    width: 22px;
    height: 22px;
}

.about-card h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.about-card p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ============================================
   Business Overview Section
   ============================================ */
.business {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--gray-100) 0%, var(--white) 100%);
}

.business-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.business-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    transition: all var(--transition);
}

.business-card.export {
    border-top: 4px solid var(--primary);
}

.business-card.import {
    border-top: 4px solid var(--accent);
}

.business-card:hover {
    box-shadow: var(--shadow-2xl);
    transform: translateY(-4px);
}

.business-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.business-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
}

.export .business-icon {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
}

.import .business-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}

.business-icon svg {
    width: 26px;
    height: 26px;
}

.business-header h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
}

.business-desc {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 24px;
}

.business-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.business-list li {
    padding: 16px;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary);
    transition: all var(--transition);
}

.import .business-list li {
    border-left-color: var(--accent);
}

.business-list li:hover {
    background: var(--gray-200);
    transform: translateX(4px);
}

.business-product {
    display: block;
    font-weight: 700;
    color: var(--gray-900);
    font-size: 15px;
    margin-bottom: 4px;
}

.business-detail {
    display: block;
    font-size: 13px;
    color: var(--gray-600);
}

.business-coming-soon {
    margin-top: 20px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.05), rgba(72, 202, 228, 0.05));
    border: 1px dashed var(--accent-light);
    border-radius: var(--radius-md);
    text-align: center;
}

.coming-soon-badge {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: 100px;
    margin-bottom: 12px;
}

.coming-soon-badge.large {
    padding: 8px 24px;
    font-size: 14px;
}

.business-coming-soon p {
    font-size: 14px;
    color: var(--gray-600);
}

/* ============================================
   Products Section
   ============================================ */
.products {
    padding: 120px 0;
    background: var(--white);
}

.product-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 48px;
}

.product-tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--gray-100);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition);
}

.product-tab svg {
    width: 20px;
    height: 20px;
}

.product-tab:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.product-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    border-color: var(--primary);
    box-shadow: 0 4px 14px rgba(10, 77, 140, 0.2);
}

.product-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.product-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Vehicle Sub-tabs */
.vehicle-subtabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 32px;
}

.subtab {
    padding: 10px 20px;
    background: transparent;
    border: 2px solid var(--gray-300);
    border-radius: 100px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition);
}

.subtab:hover {
    border-color: var(--primary-light);
    color: var(--primary);
}

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

.subtab-content {
    display: none;
}

.subtab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* Vehicle Category Card (one image per vehicle type) */
.vehicle-category-card {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 32px;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    margin-bottom: 8px;
}

.vehicle-category-img {
    min-height: 280px;
    background-size: cover;
    background-position: center;
    background-color: var(--gray-200);
}

.vehicle-category-body {
    padding: 32px 32px 32px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.vehicle-category-body h4 {
    font-size: 26px;
    color: var(--heading-color);
    margin-bottom: 12px;
}

.vehicle-category-body p {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 20px;
    font-size: 14px;
}

.model-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.model-chip {
    padding: 6px 14px;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: 100px;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition);
}

.model-chip:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

@media (max-width: 768px) {
    .vehicle-category-card {
        grid-template-columns: 1fr;
    }
    .vehicle-category-body {
        padding: 24px;
    }
    .vehicle-category-img {
        min-height: 220px;
    }
}

/* Product Category Grid */
.product-category-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.product-category {
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--gray-300);
}

.category-header h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
}

.category-count {
    font-size: 13px;
    color: var(--gray-500);
    background: var(--white);
    padding: 4px 12px;
    border-radius: 100px;
}

/* Product Cards */
.product-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.vehicle-cards {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid var(--gray-200);
}

.product-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.product-card-img {
    width: 100%;
    height: 200px;
    background-size: cover;
    background-position: center;
    background-color: var(--gray-200);
    position: relative;
    overflow: hidden;
}

.product-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.05) 100%);
}

/* Tall portrait product images (acidified oil) - show in full */
.product-card-img.tall-img {
    height: 300px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    background-color: #f8f9fa;
    padding: 12px;
    background-origin: content-box;
}

.product-card.vehicle .product-card-img {
    height: 220px;
}

.placeholder-img {
    background: linear-gradient(135deg, var(--gray-200), var(--gray-300));
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-text {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 800;
    color: var(--gray-500);
    opacity: 0.6;
}

.product-card-body {
    padding: 20px;
}

.product-card-body h4 {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
    line-height: 1.3;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.product-tags span {
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    background: rgba(10, 77, 140, 0.08);
    color: var(--primary);
    border-radius: 100px;
}

.vehicle-specs {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.vehicle-specs span {
    font-size: 12px;
    font-weight: 500;
    padding: 3px 10px;
    background: rgba(0, 180, 216, 0.08);
    color: var(--accent-dark);
    border-radius: 100px;
}

.product-card-body p {
    font-size: 13px;
    color: var(--gray-600);
    line-height: 1.5;
}

/* Placeholder Section (Special Vehicles & Oil) */
.placeholder-section {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    background: linear-gradient(135deg, var(--gray-100), var(--white));
    border-radius: var(--radius-xl);
    padding: 48px;
    align-items: center;
    border: 1px solid var(--gray-200);
}

.placeholder-section-img {
    width: 100%;
    height: 360px;
    background-size: cover;
    background-position: center;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.placeholder-section-content h3 {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.placeholder-section-content > p {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 24px;
}

.placeholder-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 32px;
}

.placeholder-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
}

.placeholder-feature .check {
    width: 20px;
    height: 20px;
    background: var(--success);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
}

.placeholder-cta {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px dashed var(--gray-400);
    text-align: center;
}

.placeholder-cta p {
    font-size: 14px;
    color: var(--gray-600);
    margin-top: 12px;
}

.placeholder-cta a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: underline;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    padding: 120px 0;
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

.contact-info h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(10, 77, 140, 0.08), rgba(0, 180, 216, 0.08));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-text strong {
    display: block;
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.contact-text p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
}

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

.contact-form-wrap {
    background: linear-gradient(135deg, var(--gray-100), var(--white));
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}

.contact-form h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 15px;
    color: var(--gray-800);
    background: var(--white);
    transition: all var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(10, 77, 140, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-success {
    display: none;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    border-radius: var(--radius-md);
    color: var(--success);
    font-size: 14px;
    font-weight: 500;
    margin-top: 16px;
}

.form-success.show {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.form-success svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-icon {
    width: auto;
    height: 68px;
    background: transparent;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
}

.footer-brand .footer-logo .logo-icon img {
    width: auto;
    height: 100%;
}

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

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--gray-500);
    margin-bottom: 16px;
    max-width: 320px;
}

.footer-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 100px;
    font-size: 12px;
    color: var(--gray-400);
}

.footer-col h4 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col li {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
}

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

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 13px;
    color: var(--gray-600);
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 20, 25, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity var(--transition);
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal {
    background: var(--white);
    border-radius: var(--radius-xl);
    max-width: 700px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-2xl);
    transform: scale(0.9);
    transition: transform var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gray-200);
    border: none;
    font-size: 24px;
    color: var(--gray-700);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--gray-300);
    transform: rotate(90deg);
}

.modal-content {
    padding: 40px;
}

.modal-content h2 {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.modal-content .modal-subtitle {
    font-size: 15px;
    color: var(--gray-600);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--gray-200);
}

.modal-specs {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    margin-top: 16px;
}

.modal-spec-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-200);
    font-size: 14px;
}

.modal-spec-row:last-child {
    border-bottom: none;
}

.modal-spec-label {
    font-weight: 600;
    color: var(--gray-700);
}

.modal-spec-value {
    color: var(--gray-800);
}

.modal-note {
    margin-top: 24px;
    padding: 16px;
    background: linear-gradient(135deg, rgba(10, 77, 140, 0.05), rgba(0, 180, 216, 0.05));
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--gray-600);
    line-height: 1.6;
}

.modal-cta {
    margin-top: 24px;
    text-align: center;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-category-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .placeholder-section {
        grid-template-columns: 1fr;
    }

    .placeholder-section-img {
        height: 280px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

@media (max-width: 768px) {
    .nav-menu,
    .nav-cta {
        display: none;
    }

    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        padding: 16px 24px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active li a {
        color: var(--gray-700);
        padding: 12px 16px;
    }

    .navbar.scrolled .nav-menu.active li a {
        color: var(--gray-700);
    }

    .hamburger {
        display: flex;
    }

    .hero-stats {
        gap: 16px;
    }

    .stat-num {
        font-size: 28px;
    }

    .stat-divider {
        height: 32px;
    }

    .section-header h2 {
        font-size: 32px;
    }

    .section-desc {
        font-size: 16px;
    }

    .about,
    .business,
    .products,
    .contact {
        padding: 80px 0;
    }

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

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

    .product-cards {
        grid-template-columns: 1fr;
    }

    .placeholder-features {
        grid-template-columns: 1fr;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .modal-spec-row {
        grid-template-columns: 1fr;
        gap: 2px;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 100px 16px 60px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 12px;
    }

    .stat-divider {
        display: none;
    }

    .product-tabs {
        gap: 6px;
    }

    .product-tab {
        padding: 10px 16px;
        font-size: 13px;
    }

    .product-tab svg {
        width: 16px;
        height: 16px;
    }

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