/* ========================================
   TWISTERA LTD — Professional Stylesheet
   ======================================== */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    --primary: #0a1628;
    --primary-light: #12223d;
    --primary-mid: #1a3050;
    --accent: #f0a500;
    --accent-hover: #d4900a;
    --accent-light: rgba(240, 165, 0, 0.1);
    --text-dark: #1a1a2e;
    --text-body: #4a4a5a;
    --text-light: #7a7a8a;
    --text-white: #f0f0f5;
    --bg-light: #f5f7fa;
    --bg-white: #ffffff;
    --border: #e2e6ea;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-accent: 0 4px 20px rgba(240, 165, 0, 0.3);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.3s ease;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--text-body);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

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

/* ===== UTILITY ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-accent {
    color: var(--accent);
}

.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.underline {
    width: 60px;
    height: 4px;
    background: var(--accent);
    margin: 0 auto 20px;
    border-radius: 2px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 14px 32px;
    border-radius: 50px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

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

.btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
}

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

.btn-small {
    padding: 10px 24px;
    font-size: 0.85rem;
}

.btn-large {
    padding: 18px 40px;
    font-size: 1rem;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    font-size: 1rem;
    padding: 16px 32px;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1001;
}

.logo-icon {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.45rem;
    font-weight: 900;
    color: #fff;
    letter-spacing: 3px;
}

.logo-ltd {
    font-size: 0.65em;
    font-weight: 600;
    color: var(--accent);
    margin-left: 4px;
    letter-spacing: 2px;
    vertical-align: middle;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    padding: 8px 18px;
    border-radius: 50px;
    transition: all var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links a:hover,
.nav-links a.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.nav-links .nav-cta {
    background: var(--accent);
    color: var(--primary) !important;
    margin-left: 8px;
}

.nav-links .nav-cta:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
    background: none;
    border: none;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 28px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

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

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 40%;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(
        100deg,
        rgba(6, 12, 24, 0.94) 0%,
        rgba(8, 18, 35, 0.88) 35%,
        rgba(10, 22, 40, 0.70) 60%,
        rgba(12, 28, 50, 0.50) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 3;
    width: 100%;
    padding: 140px 0 60px;
}

.hero-inner {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.hero-text {
    max-width: 650px;
}

.hero-line {
    width: 50px;
    height: 3px;
    background: var(--accent);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 3.6rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 520px;
    margin-bottom: 36px;
    line-height: 1.8;
    font-weight: 400;
}

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

/* Hero bottom cards */
.hero-cards {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 18px 24px;
    border-radius: 12px;
    flex: 1;
    min-width: 220px;
    transition: all var(--transition);
}

.hero-card:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(240, 165, 0, 0.3);
    transform: translateY(-2px);
}

.hero-card-icon {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: var(--primary);
    border-radius: 10px;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.hero-card strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 2px;
}

.hero-card span {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.55);
}

/* ===== ABOUT ===== */
.about {
    background: var(--bg-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text .lead {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-text p {
    margin-bottom: 16px;
    color: var(--text-body);
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 28px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}

.about-detail {
    display: flex;
    align-items: center;
    gap: 16px;
}

.about-detail i {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 10px;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.about-detail strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-dark);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-detail span {
    font-size: 0.95rem;
    color: var(--text-light);
}

.about-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.value-card {
    background: var(--bg-light);
    padding: 28px 24px;
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.value-card:hover {
    background: var(--bg-white);
    border-color: var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.value-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: var(--primary);
    border-radius: 14px;
    font-size: 1.3rem;
    margin: 0 auto 16px;
}

.value-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.value-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== SERVICES ===== */
.services {
    background: var(--bg-light);
}

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

.service-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 36px 28px;
    transition: all var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform var(--transition);
}

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

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card.featured {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.service-card.featured::before {
    transform: scaleX(1);
}

.service-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: var(--accent);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 50px;
}

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 16px;
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card > p {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-features {
    margin-bottom: 24px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-body);
    padding: 6px 0;
}

.service-features li i {
    color: var(--accent);
    font-size: 0.8rem;
}

.service-link {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition);
}

.service-link:hover {
    color: var(--accent-hover);
    gap: 12px;
}

/* ===== PRODUCTS ===== */
.products {
    background: var(--bg-white);
}

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

.product-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

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

.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(1.05);
}

.product-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: var(--accent);
    color: var(--primary);
    padding: 5px 14px;
    border-radius: 50px;
}

.product-badge.popular {
    background: var(--primary);
    color: #fff;
}

.product-info {
    padding: 24px;
}

.product-info h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.product-info > p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.6;
}

.product-specs {
    margin-bottom: 20px;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
}

.product-specs li {
    font-size: 0.85rem;
    color: var(--text-body);
    padding: 4px 0;
}

.product-specs li strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* ===== CTA BANNER ===== */
.cta-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--primary-mid) 100%);
    padding: 80px 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto 32px;
}

/* ===== CONTACT ===== */
.contact {
    background: var(--bg-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 40px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--bg-white);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.contact-card:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--accent);
}

.contact-card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: var(--primary);
    border-radius: 12px;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-card h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

.contact-card a {
    color: var(--accent);
    font-weight: 500;
}

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

.contact-map {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--bg-white);
    padding: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.contact-form h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 28px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-group label {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-dark);
    background: var(--bg-light);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    background: var(--bg-white);
    box-shadow: 0 0 0 4px rgba(240, 165, 0, 0.1);
}

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

.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='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237a7a8a' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-message {
    display: none;
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 16px;
    text-align: center;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--primary);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo .logo-icon {
    width: 34px;
    height: 34px;
}

.footer-logo .logo-text {
    font-size: 1.15rem;
}

.footer-logo .logo-ltd {
    color: var(--accent);
}

.footer-about p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer h4 {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #fff;
    margin-bottom: 20px;
}

.footer-links ul li,
.footer-services ul li {
    margin-bottom: 10px;
}

.footer-links ul li a,
.footer-services ul li a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    transition: all var(--transition);
}

.footer-links ul li a:hover,
.footer-services ul li a:hover {
    color: var(--accent);
    padding-left: 6px;
}

.footer-contact ul li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.9rem;
    margin-bottom: 14px;
}

.footer-contact ul li i {
    color: var(--accent);
    margin-top: 3px;
    flex-shrink: 0;
}

.footer-contact ul li a {
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact ul li a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

.footer-codes {
    margin-top: 8px;
    font-size: 0.8rem !important;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: var(--primary);
    border-radius: 50%;
    font-size: 1.1rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--accent-hover);
    transform: translateY(-4px);
}

/* ===== SCROLL REVEAL ANIMATION ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* Stagger animation for grid children */
.services-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.services-grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.services-grid .reveal:nth-child(4) { transition-delay: 0.3s; }

.products-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.products-grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.products-grid .reveal:nth-child(4) { transition-delay: 0.3s; }
.products-grid .reveal:nth-child(5) { transition-delay: 0.4s; }
.products-grid .reveal:nth-child(6) { transition-delay: 0.5s; }

.about-values .reveal:nth-child(2) { transition-delay: 0.1s; }
.about-values .reveal:nth-child(3) { transition-delay: 0.2s; }
.about-values .reveal:nth-child(4) { transition-delay: 0.3s; }

/* ===== RESPONSIVE — TABLET ===== */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.8rem;
    }

    .hero-cards {
        gap: 14px;
    }

    .hero-card {
        min-width: 200px;
        padding: 14px 18px;
    }

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

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

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

@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

/* ===== RESPONSIVE — MOBILE ===== */
@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--primary);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 32px;
        gap: 4px;
        transition: right var(--transition);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
    }

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

    .nav-links a {
        width: 100%;
        padding: 12px 16px;
        font-size: 0.95rem;
    }

    .nav-links .nav-cta {
        margin-left: 0;
        margin-top: 12px;
        text-align: center;
        justify-content: center;
    }

    /* Hero Mobile */
    .hero {
        min-height: 100svh;
    }

    .hero-content {
        padding: 120px 0 40px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .hero-card {
        min-width: auto;
    }

    /* Services Mobile */
    .services-grid {
        grid-template-columns: 1fr;
    }

    /* Products Mobile */
    .products-grid {
        grid-template-columns: 1fr;
    }

    /* Form Mobile */
    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form-wrapper {
        padding: 28px 20px;
    }

    /* CTA Mobile */
    .cta-content h2 {
        font-size: 1.8rem;
    }

    /* Footer Mobile */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    /* About Values Mobile */
    .about-values {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: 1.7rem;
    }

    .hero-content {
        padding: 110px 0 30px;
    }

    .hero-line {
        width: 36px;
        margin-bottom: 16px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.85rem;
    }

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

    .section-header h2 {
        font-size: 1.7rem;
    }
}