/* ================================
   MATIZYE INVESTMENTS LIMITED
   Construction Machinery Website
   ================================ */

:root {
    /* Primary - Industrial Yellow/Orange */
    --color-primary: #F59E0B;
    --color-primary-dark: #D97706;
    --color-primary-light: #FCD34D;
    --color-accent: #EA580C;

    /* Neutrals */
    --color-dark: #0F172A;
    --color-dark-2: #1E293B;
    --color-dark-3: #334155;
    --color-gray: #64748B;
    --color-gray-light: #94A3B8;
    --color-border: #E2E8F0;
    --color-bg: #F8FAFC;
    --color-white: #FFFFFF;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-display: 'Oswald', 'Noto Sans SC', sans-serif;
    --font-body: 'Inter', 'Noto Sans SC', sans-serif;

    /* Layout */
    --container-width: 1200px;
    --nav-height: 72px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-dark-2);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============ Buttons ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 4px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

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

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

.btn-primary svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

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

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

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ============ Navbar ============ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-mark {
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    color: var(--color-dark);
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 2px;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-main {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 2px;
}

.logo-sub {
    font-size: 10px;
    color: var(--color-gray-light);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-link {
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--color-gray-light);
    position: relative;
    padding: 6px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

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

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('assets/images/excavator.jpg');
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
    from { transform: scale(1.05); }
    to { transform: scale(1.15); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(15, 23, 42, 0.92) 0%,
        rgba(15, 23, 42, 0.75) 50%,
        rgba(234, 88, 12, 0.4) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 120px 24px 80px;
    width: 100%;
}

.hero-tagline {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    color: var(--color-primary);
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 3px;
    text-transform: uppercase;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.tagline-bar {
    width: 40px;
    height: 2px;
    background: var(--color-primary);
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 28px;
}

.hero-title-line {
    display: block;
    font-size: clamp(36px, 6vw, 72px);
    color: var(--color-white);
    letter-spacing: 2px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero-title-line.accent {
    color: var(--color-primary);
    font-size: clamp(24px, 4vw, 48px);
    letter-spacing: 4px;
    animation-delay: 0.6s;
}

.hero-desc {
    max-width: 600px;
    color: var(--color-gray-light);
    font-size: 17px;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.8s forwards;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease 1s forwards;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    margin-top: 60px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 1.2s forwards;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-num {
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 700;
    color: var(--color-white);
}

.stat-label {
    font-size: 12px;
    color: var(--color-gray-light);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--color-gray-light);
    font-size: 11px;
    letter-spacing: 3px;
    text-transform: uppercase;
    z-index: 2;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.3); }
}

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

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

.section-head {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 500;
    color: var(--color-primary-dark);
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-label.light {
    color: var(--color-primary);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.section-title.light {
    color: var(--color-white);
}

.section-line {
    width: 60px;
    height: 3px;
    background: var(--color-primary);
    margin: 0 auto;
    border-radius: 2px;
}

.section-line.light {
    background: var(--color-primary);
}

.section-desc {
    max-width: 600px;
    margin: 16px auto 0;
    color: var(--color-gray);
    font-size: 16px;
}

.section-desc.light {
    color: var(--color-gray-light);
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    max-width: 900px;
    margin: 0 auto;
    gap: 0;
}

.about-text.centered {
    text-align: center;
}

.about-text.centered .about-features {
    text-align: left;
}

.about-heading {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.about-para {
    color: var(--color-gray);
    line-height: 1.9;
    margin-bottom: 20px;
    font-size: 15px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 36px;
    padding-top: 36px;
    border-top: 1px solid var(--color-border);
}

.feat-item {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.feat-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.feat-item h4 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 4px;
}

.feat-item p {
    font-size: 13px;
    color: var(--color-gray);
}

/* Certificate Card */
.cert-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px;
    position: relative;
    overflow: hidden;
}

.cert-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.cert-badge {
    width: 56px;
    height: 56px;
    background: var(--color-primary);
    color: var(--color-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.cert-badge svg {
    width: 28px;
    height: 28px;
}

.cert-card h4 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 4px;
}

.cert-subtitle {
    font-size: 13px;
    color: var(--color-gray);
    margin-bottom: 20px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.cert-image-wrap {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-image {
    max-height: 200px;
    width: auto;
    object-fit: contain;
}

.cert-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.cert-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px dashed var(--color-border);
    font-size: 13px;
}

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

.cert-label {
    color: var(--color-gray);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 11px;
}

.cert-value {
    color: var(--color-dark);
    font-weight: 600;
    text-align: right;
}

/* ============ Products ============ */
.products {
    background: var(--color-dark);
    position: relative;
    overflow: hidden;
}

.products::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.products::after {
    content: '';
    position: absolute;
    bottom: -200px;
    left: -200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(234, 88, 12, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.products .container {
    position: relative;
    z-index: 1;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.product-card {
    background: var(--color-dark-2);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.4s ease;
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--color-primary);
}

.product-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.08);
}

.product-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--color-primary);
    color: var(--color-dark);
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    padding: 6px 12px;
    border-radius: 4px;
}

.product-body {
    padding: 24px;
}

.product-body h3 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.product-desc {
    color: var(--color-gray-light);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
}

.product-scenes {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.scene-tag {
    font-size: 11px;
    padding: 4px 10px;
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 20px;
    letter-spacing: 0.5px;
}

/* More card */
.more-card {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(234, 88, 12, 0.05));
    border: 2px dashed rgba(245, 158, 11, 0.3);
}

.more-card:hover {
    border-style: solid;
}

.more-inner {
    height: 100%;
    min-height: 360px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 24px;
}

.more-icon {
    width: 64px;
    height: 64px;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.more-icon svg {
    width: 100%;
    height: 100%;
}

.more-inner h3 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.more-inner p {
    color: var(--color-gray-light);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 24px;
}

.more-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.more-link svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.more-link:hover svg {
    transform: translateX(4px);
}

/* ============ Services ============ */
.services {
    background: var(--color-bg);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 40px 32px;
    position: relative;
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-card.featured {
    background: linear-gradient(145deg, var(--color-dark), var(--color-dark-2));
    border-color: var(--color-primary);
    transform: translateY(-8px);
}

.service-card.featured:hover {
    transform: translateY(-14px);
}

.service-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-dark);
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    padding: 6px 16px;
    border-radius: 20px;
    text-transform: uppercase;
    white-space: nowrap;
}

.service-num {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 700;
    color: var(--color-border);
    line-height: 1;
    margin-bottom: 16px;
}

.service-card.featured .service-num {
    color: rgba(245, 158, 11, 0.2);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-card.featured .service-icon {
    background: var(--color-primary);
    color: var(--color-dark);
}

.service-icon svg {
    width: 28px;
    height: 28px;
}

.service-card h3 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.service-card.featured h3 {
    color: var(--color-white);
}

.service-card > p {
    color: var(--color-gray);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-card.featured > p {
    color: var(--color-gray-light);
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--color-dark-3);
}

.service-card.featured .service-list li {
    color: var(--color-gray-light);
}

.service-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ============ Contact ============ */
.contact {
    background: var(--color-dark-2);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at top left, rgba(245, 158, 11, 0.08), transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(234, 88, 12, 0.06), transparent 50%);
    pointer-events: none;
}

.contact .container {
    position: relative;
    z-index: 1;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-left {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-info-card {
    background: var(--color-dark);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-info-card .contact-icon {
    background: rgba(245, 158, 11, 0.12);
    color: var(--color-primary);
    border-radius: 12px;
    width: 52px;
    height: 52px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.contact-item h4 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

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

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

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

/* Contact Map */
.contact-map {
    position: relative;
    background: var(--color-dark);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    overflow: hidden;
    min-height: 320px;
}

.map-open-link {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--color-white);
    color: #1A73E8;
    font-size: 13px;
    font-weight: 500;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: all 0.2s ease;
}

.map-open-link:hover {
    background: #f0f6ff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.map-open-link svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.map-iframe {
    width: 100%;
    height: 360px;
    border: 0;
    display: block;
    filter: grayscale(5%);
}

/* Contact Form */
.contact-form {
    background: var(--color-dark);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 40px;
}

.contact-form h3 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.form-sub {
    color: var(--color-gray-light);
    font-size: 14px;
    margin-bottom: 28px;
}

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

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

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-gray-light);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-dark-2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: var(--color-white);
    font-family: inherit;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

/* ============ Footer ============ */
.footer {
    background: #0A0F1A;
    color: var(--color-gray-light);
    padding: 60px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: var(--color-gray);
}

.footer-company-info p {
    font-size: 12px;
    color: var(--color-gray);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: var(--color-gray);
    transition: all 0.2s ease;
}

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

.footer-contact p {
    font-size: 14px;
    color: var(--color-gray);
    line-height: 1.8;
    margin-bottom: 12px;
}

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

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--color-gray);
}

/* ============ Back to Top ============ */
.back-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: var(--color-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

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

.back-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-4px);
}

.back-top svg {
    width: 20px;
    height: 20px;
}

/* ============ Responsive ============ */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .service-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    .service-card.featured {
        transform: none;
    }

    .service-card.featured:hover {
        transform: translateY(-6px);
    }

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

    .map-iframe {
        height: 320px;
    }

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

@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }

    .section-head {
        margin-bottom: 40px;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-stats {
        gap: 20px;
        flex-wrap: wrap;
    }

    .stat-divider {
        display: none;
    }

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

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

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

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

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

    .contact-form {
        padding: 28px 24px;
    }

    .contact-info-card {
        padding: 24px;
    }

    .map-iframe {
        height: 260px;
    }

    .map-open-link {
        font-size: 12px;
        padding: 8px 12px;
        top: 12px;
        left: 12px;
    }

    .back-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 100px 20px 60px;
    }

    .hero-title-line {
        font-size: 32px;
    }

    .hero-title-line.accent {
        font-size: 22px;
    }

    .hero-desc {
        font-size: 15px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        justify-content: center;
    }

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

    .cert-card {
        padding: 20px;
    }
}

/* ============ Scroll reveal ============ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}