/* ==========================================================================
   SENTOSA GLOBAL METAL TRADING LLC - PREMIUM INDUSTRIAL DESIGN SYSTEM
   ========================================================================== */

:root {
    /* Color Palette - Industrial Premium */
    --primary: #1E3A8A;           /* Deep Steel Blue */
    --primary-dark: #0F172A;      /* Slate Black */
    --primary-light: #3B82F6;     /* Bright Blue */
    --accent: #D97706;            /* Metallic Copper / Gold */
    --accent-hover: #B45309;      /* Dark Copper */
    --accent-light: #FEF3C7;      /* Light Gold Tint */
    --secondary: #64748B;         /* Slate Gray */
    --dark: #090D16;              /* Ultra Dark Charcoal */
    --light: #F8FAFC;             /* Off-white / Silver */
    --white: #FFFFFF;
    --border: #E2E8F0;
    --border-dark: #334155;
    --card-bg: #FFFFFF;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Shadows & Glassmorphism */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.15), 0 10px 10px -5px rgba(0,0,0,0.04);
    --shadow-glow: 0 0 25px rgba(217, 119, 6, 0.3);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: #334155;
    background-color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--primary-dark);
    font-weight: 700;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================================================
   Utility Classes & Buttons
   ========================================================================== */
.text-center { text-align: center; }
.text-white { color: var(--white) !important; }
.text-light { color: #CBD5E1 !important; }
.highlight { color: var(--accent); position: relative; display: inline-block; }

.section-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
    background: var(--accent-light);
    padding: 0.35rem 0.85rem;
    border-radius: 50px;
    margin-bottom: 1rem;
    text-transform: uppercase;
}
.section-tag.light {
    background: rgba(217, 119, 6, 0.15);
    color: #F59E0B;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--accent);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(217, 119, 6, 0.4);
}
.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(217, 119, 6, 0.6);
}

.btn-secondary {
    background: var(--primary);
    color: var(--white);
}
.btn-secondary:hover {
    background: #1D4ED8;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border-color: var(--border);
    color: var(--primary-dark);
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(217, 119, 6, 0.05);
}

.btn-lg {
    padding: 1rem 2.25rem;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

/* ==========================================================================
   Top Bar
   ========================================================================== */
.top-bar {
    background-color: var(--primary-dark);
    color: #94A3B8;
    font-size: 0.85rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}
.top-bar-left, .top-bar-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.top-bar i {
    color: var(--accent);
    margin-right: 0.35rem;
}
.badge-iso {
    background: rgba(217, 119, 6, 0.2);
    color: #F59E0B;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-weight: 600;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}
.navbar.scrolled {
    box-shadow: var(--shadow-md);
    padding: 0.5rem 0;
}
.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.logo-icon {
    width: 45px;
    height: 45px;
}
.logo-svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}
.logo-svg.small {
    width: 38px;
    height: 38px;
}
.logo-text {
    display: flex;
    flex-direction: column;
}
.company-name {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary-dark);
    letter-spacing: 0.5px;
    line-height: 1;
}
.company-sub {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 2px;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}
.nav-link {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-dark);
    position: relative;
    padding: 0.5rem 0;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}
.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}
.nav-link:hover, .nav-link.active {
    color: var(--accent);
}
.nav-btn {
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
}
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-dark);
    cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: calc(100vh - 120px);
    background-color: var(--dark);
    background-image: 
        radial-gradient(circle at 80% 20%, rgba(30, 58, 138, 0.4) 0%, transparent 40%),
        radial-gradient(circle at 20% 80%, rgba(217, 119, 6, 0.15) 0%, transparent 40%),
        linear-gradient(to bottom, rgba(9, 13, 22, 0.85), rgba(9, 13, 22, 0.95)),
        url('images/aluminium/soft-shiny-wire-talon.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    padding: 5rem 0 3rem;
    color: var(--white);
    overflow: hidden;
}
.hero-content {
    position: relative;
    z-index: 2;
}
.hero-text-wrap {
    max-width: 800px;
    margin-bottom: 4rem;
}
.badge-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: #F59E0B;
    margin-bottom: 1.5rem;
}
.hero-title {
    font-size: 3.75rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 1.5rem;
}
.hero-desc {
    font-size: 1.25rem;
    color: #CBD5E1;
    margin-bottom: 2.5rem;
    max-width: 680px;
    font-weight: 300;
}
.hero-actions {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}
.hero-actions .btn-outline {
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--white);
}
.hero-actions .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
}

/* Stats Bar */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
}
.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    padding-right: 1rem;
}
.stat-card:last-child {
    border-right: none;
}
.stat-icon {
    font-size: 2.2rem;
    color: var(--accent);
}
.stat-info {
    display: flex;
    flex-direction: column;
}
.stat-num {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
}
.stat-label {
    font-size: 0.85rem;
    color: #94A3B8;
    margin-top: 0.25rem;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.section {
    padding: 6rem 0;
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.about-visual {
    position: relative;
    padding-bottom: 2rem;
    padding-right: 2rem;
}
.image-box {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}
.image-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}
.image-box:hover img {
    transform: scale(1.05);
}
.main-img {
    height: 450px;
    position: relative;
    z-index: 2;
}
.sub-img {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 60%;
    height: 250px;
    z-index: 3;
    border: 6px solid var(--light);
}
.experience-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--accent);
    color: var(--white);
    padding: 1.25rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: var(--shadow-lg);
    z-index: 4;
}
.exp-years {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}
.exp-text {
    font-size: 0.75rem;
    font-weight: 600;
    max-width: 100px;
    margin-top: 0.25rem;
    letter-spacing: 0.5px;
}
.visual-backdrop {
    position: absolute;
    top: -20px;
    left: -20px;
    width: 50%;
    height: 50%;
    background: radial-gradient(circle, rgba(217,119,6,0.15) 0%, transparent 70%);
    z-index: 1;
}

.about-text .lead-text {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}
.about-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 2.5rem 0;
}
.feature-item {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}
.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background: rgba(30, 58, 138, 0.08);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    flex-shrink: 0;
}
.feature-detail h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}
.feature-detail p {
    font-size: 0.95rem;
    color: var(--secondary);
}

/* ==========================================================================
   Products Section
   ========================================================================== */
.products {
    background-color: var(--white);
}
.product-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 3.5rem;
}
.filter-btn {
    padding: 0.65rem 1.35rem;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    background: var(--light);
    color: var(--primary-dark);
    border: 1px solid var(--border);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.filter-btn:hover, .filter-btn.active {
    background: var(--primary-dark);
    color: var(--white);
    border-color: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
}
.product-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(217, 119, 6, 0.4);
}
.product-image {
    position: relative;
    height: 240px;
    overflow: hidden;
}
.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.product-card:hover .product-image img {
    transform: scale(1.08);
}
.product-tag {
    position: absolute;
    bottom: 12px;
    left: 12px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(6px);
    color: #F59E0B;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    letter-spacing: 0.5px;
}
.product-content {
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.product-meta {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}
.product-title {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}
.product-desc {
    font-size: 0.95rem;
    color: var(--secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}
.product-specs {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--primary-dark);
    background: var(--light);
    padding: 0.85rem 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
}
.product-specs i {
    color: var(--accent);
    width: 18px;
}
.inquire-btn {
    margin-top: auto;
}

/* ==========================================================================
   Global Logistics Section
   ========================================================================== */
.logistics {
    background-color: #0F172A;
    color: var(--white);
    position: relative;
    overflow: hidden;
}
.logistics-box {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}
.route-tags {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 2rem 0;
}
.route-tag {
    font-size: 1.05rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #E2E8F0;
}
.route-tag i {
    color: var(--accent);
}
.logistics-perks {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.perk h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.perk h4 i { color: #38BDF8; }
.perk p { font-size: 0.9rem; color: #94A3B8; }

.logistics-map-card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-xl);
}
.map-graphic {
    position: relative;
    height: 320px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.05) 0%, transparent 70%), url('images/aluminium/extrusion-6061-6082.jpg');
    background-size: cover;
    background-position: center;
    border-radius: 12px;
    overflow: hidden;
}
.map-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}
.hub-point {
    position: absolute;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(15, 23, 42, 0.9);
    padding: 0.4rem 0.8rem;
    border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.2);
    font-size: 0.75rem;
    font-weight: 700;
}
.dubai-hub {
    top: 45%;
    left: 40%;
    border-color: var(--accent);
    color: #F59E0B;
}
.asia-hub {
    top: 60%;
    left: 70%;
    color: #38BDF8;
}
.europe-hub {
    top: 25%;
    left: 20%;
    color: #10B981;
}
.pulse {
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 0 rgba(217, 119, 6, 0.4);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(217, 119, 6, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(217, 119, 6, 0); }
    100% { box-shadow: 0 0 0 0 rgba(217, 119, 6, 0); }
}
.point {
    width: 8px;
    height: 8px;
    background: #38BDF8;
    border-radius: 50%;
}
.map-caption {
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: #94A3B8;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* ==========================================================================
   Quality Section
   ========================================================================== */
.quality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}
.quality-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: var(--transition);
    text-align: center;
}
.quality-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.q-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary), #3B82F6);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    box-shadow: 0 10px 20px rgba(30, 58, 138, 0.2);
}
.quality-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}
.quality-card p {
    font-size: 0.95rem;
    color: var(--secondary);
}

/* ==========================================================================
   Contact & Quote Section
   ========================================================================== */
.contact {
    background: linear-gradient(to bottom, var(--light), #E2E8F0);
}
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: flex-start;
}
.info-blocks {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    margin: 2rem 0;
}
.info-item {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}
.info-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background: var(--primary-dark);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}
.info-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}
.info-item p, .info-item a {
    font-size: 0.95rem;
    color: var(--secondary);
}
.info-item a:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* Map Placeholder */
.map-placeholder {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.map-header {
    background: var(--primary-dark);
    color: var(--white);
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.map-body {
    height: 200px;
    background: 
        radial-gradient(circle at center, rgba(217,119,6,0.1) 0%, transparent 60%),
        linear-gradient(to bottom, #F1F5F9, #E2E8F0);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.map-pin {
    background: var(--primary-dark);
    color: var(--white);
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--accent);
    animation: bounce 2s infinite;
}
.map-pin i { color: var(--accent); }
@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* Quote Form Card */
.quote-form-card {
    background: var(--white);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border);
}
.form-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}
.form-header h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}
.form-header p {
    font-size: 0.95rem;
    color: var(--secondary);
}
.inquiry-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}
.form-group {
    margin-bottom: 1.25rem;
    display: flex;
    flex-direction: column;
}
.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 0.4rem;
}
.form-group input, .form-group select, .form-group textarea {
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #F8FAFC;
    transition: var(--transition);
    color: var(--primary-dark);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15);
}
.error-msg {
    font-size: 0.75rem;
    color: #DC2626;
    margin-top: 0.3rem;
    display: none;
}
.form-group.error input, .form-group.error select {
    border-color: #DC2626;
    background: #FEF2F2;
}
.form-group.error .error-msg {
    display: block;
}
.submit-btn {
    margin-top: 1rem;
}
.btn-loader {
    display: none;
}
.submit-btn.loading .btn-text { display: none; }
.submit-btn.loading .btn-loader { display: inline-flex; align-items: center; gap: 0.5rem; }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--dark);
    color: #94A3B8;
    padding: 5rem 0 2rem;
    border-top: 4px solid var(--accent);
}
.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 3rem;
    margin-bottom: 4rem;
}
.brand-col .logo { margin-bottom: 1.25rem; }
.footer-about {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}
.social-links {
    display: flex;
    gap: 0.75rem;
}
.social-links a {
    width: 38px;
    height: 38px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}
.social-links a:hover {
    background: var(--accent);
    transform: translateY(-3px);
}
.footer-col h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent);
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.footer-links a {
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.footer-links a:hover {
    color: var(--accent);
    transform: translateX(5px);
}
.footer-links i { font-size: 0.7rem; color: var(--accent); }
.footer-address p {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-style: normal;
}
.footer-address i { color: var(--accent); margin-top: 4px; }
.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.85rem;
}
.legal-links {
    display: flex;
    gap: 1.5rem;
}
.legal-links a:hover { color: var(--accent); }

/* ==========================================================================
   Toast Modal
   ========================================================================== */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #0F172A;
    color: var(--white);
    padding: 1.25rem 1.75rem;
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    border-left: 5px solid #10B981;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    z-index: 2000;
    max-width: 450px;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.4s ease;
}
.toast.hidden {
    transform: translateY(150%);
    opacity: 0;
    pointer-events: none;
}
.toast-icon {
    font-size: 1.75rem;
    color: #10B981;
}
.toast-content h4 {
    color: var(--white);
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}
.toast-content p {
    font-size: 0.85rem;
    color: #CBD5E1;
}
.toast-close {
    background: none;
    border: none;
    color: #94A3B8;
    font-size: 1.25rem;
    cursor: pointer;
}

/* ==========================================================================
   Responsive Breakpoints - Full Device Coverage
   ========================================================================== */

/* Laptops and Small Desktops (max-width: 1200px) */
@media (max-width: 1200px) {
    .container { max-width: 1000px; padding: 0 1.5rem; }
    .hero-title { font-size: 3.25rem; }
    .nav-links { gap: 1.25rem; }
    .product-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
}

/* Tablets and Landscape Mobile (max-width: 1024px) */
@media (max-width: 1024px) {
    .hero-title { font-size: 2.8rem; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
    .stat-card:nth-child(2) { border-right: none; }
    .about-grid, .logistics-box, .contact-wrapper { grid-template-columns: 1fr; gap: 3rem; }
    .about-visual { padding-right: 0; padding-bottom: 3rem; max-width: 700px; margin: 0 auto; width: 100%; }
    .main-img { height: 400px; }
    .sub-img { width: 55%; height: 220px; }
    .footer-content { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
    .logistics-perks { grid-template-columns: 1fr 1fr; }
}

/* Tablets Portrait and Mobile Devices (max-width: 768px) */
@media (max-width: 768px) {
    .section { padding: 4.5rem 0; }
    .section-title { font-size: 2.25rem; }
    .top-bar-content { justify-content: center; text-align: center; gap: 0.75rem; }
    .top-bar-left, .top-bar-right { justify-content: center; flex-wrap: wrap; gap: 1rem; }
    .navbar-content { height: 70px; }
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: 3rem 1.5rem;
        gap: 1.75rem;
        transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: var(--shadow-xl);
        overflow-y: auto;
        z-index: 999;
    }
    .nav-links.show { left: 0; }
    .menu-toggle { display: block; }
    .hero { min-height: auto; padding: 4rem 0 3rem; }
    .hero-title { font-size: 2.25rem; }
    .hero-desc { font-size: 1.1rem; margin-bottom: 2rem; }
    .hero-actions { flex-direction: column; width: 100%; gap: 1rem; }
    .hero-actions .btn { width: 100%; justify-content: center; }
    .hero-stats { grid-template-columns: 1fr; gap: 1rem; padding: 1.5rem; }
    .stat-card { border-right: none; border-bottom: 1px solid rgba(255, 255, 255, 0.1); padding-bottom: 1rem; padding-right: 0; justify-content: center; }
    .stat-card:last-child { border-bottom: none; padding-bottom: 0; }
    .product-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.75rem; }
    .logistics-perks { grid-template-columns: 1fr; gap: 1.25rem; }
    .quality-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
    .inquiry-form .form-row { grid-template-columns: 1fr; gap: 0; }
    .quote-form-card { padding: 2rem 1.5rem; }
    .info-item { align-items: flex-start; }
    .footer-content { grid-template-columns: 1fr; gap: 2.5rem; }
    .footer-bottom { flex-direction: column; text-align: center; gap: 1.25rem; }
    .legal-links { justify-content: center; flex-wrap: wrap; gap: 1rem; }
}

/* Small Mobile Screens (max-width: 480px) */
@media (max-width: 480px) {
    html { font-size: 15px; }
    .container { padding: 0 1rem; }
    .section { padding: 3.5rem 0; }
    .section-title { font-size: 1.85rem; }
    .section-subtitle { font-size: 0.95rem; margin-bottom: 2rem; }
    .top-bar { font-size: 0.8rem; }
    .top-bar-left, .top-bar-right { flex-direction: column; gap: 0.5rem; width: 100%; }
    .top-bar-left span, .top-bar-right span { display: block; width: 100%; text-align: center; }
    .company-name { font-size: 1.15rem; }
    .company-sub { font-size: 0.65rem; }
    .hero-title { font-size: 1.85rem; }
    .hero-desc { font-size: 1rem; }
    .main-img { height: 280px; }
    .sub-img { width: 70%; height: 160px; border-width: 4px; }
    .experience-badge { padding: 0.85rem; top: 10px; left: 10px; }
    .exp-years { font-size: 1.75rem; }
    .exp-text { font-size: 0.7rem; }
    .feature-item { flex-direction: column; gap: 0.75rem; text-align: center; align-items: center; }
    .product-grid { grid-template-columns: 1fr; }
    .product-image { height: 200px; }
    .product-content { padding: 1.25rem; }
    .product-filters { gap: 0.5rem; }
    .filter-btn { padding: 0.45rem 0.85rem; font-size: 0.8rem; flex: 1 1 auto; justify-content: center; }
    .logistics-map-card { padding: 1.25rem; }
    .map-graphic { height: 250px; }
    .hub-point { font-size: 0.7rem; padding: 0.3rem 0.6rem; }
    .quote-form-card { padding: 1.5rem 1rem; }
    .form-header h3 { font-size: 1.4rem; }
    .toast { left: 15px; right: 15px; bottom: 15px; max-width: calc(100% - 30px); padding: 1rem; }
}

/* Extra Small Mobile Devices (max-width: 360px) */
@media (max-width: 360px) {
    .hero-title { font-size: 1.65rem; }
    .section-title { font-size: 1.6rem; }
    .btn { padding: 0.65rem 1.25rem; font-size: 0.9rem; }
    .stat-num { font-size: 1.5rem; }
    .main-img { height: 240px; }
    .sub-img { height: 140px; }
}