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

:root {
    --green-dark: #1b4332;
    --green-mid: #2d6a4f;
    --green: #40916c;
    --green-light: #74c69d;
    --green-pale: #d8f3dc;
    --bg: #ffffff;
    --bg-alt: #f8faf9;
    --text: #1a1a1a;
    --text-muted: #555;
    --border: #e5e7eb;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

/* ============ Navigation ============ */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--green-dark);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo-tech {
    font-weight: 400;
    color: var(--green);
    font-size: 16px;
    margin-left: 4px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--green);
}

.nav-cta {
    background: var(--green-mid);
    color: #fff !important;
    padding: 10px 20px;
    border-radius: 6px;
}

.nav-cta:hover {
    background: var(--green-dark);
}

.lang-item select {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
    font-size: 14px;
    cursor: pointer;
    color: var(--text);
}

.lang-item select:focus {
    outline: none;
    border-color: var(--green);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

/* ============ Hero ============ */
.hero {
    background: linear-gradient(135deg, var(--green-dark) 0%, var(--green-mid) 100%);
    color: #fff;
    padding: 120px 0 140px;
    text-align: center;
}

.hero-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 13px;
    letter-spacing: 0.5px;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -1.5px;
}

.hero-sub {
    font-size: 19px;
    max-width: 720px;
    margin: 0 auto 40px;
    opacity: 0.92;
    line-height: 1.7;
}

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

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.2s;
}

.btn-primary {
    background: #fff;
    color: var(--green-dark);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

.btn-full {
    width: 100%;
    border: none;
    cursor: pointer;
    background: var(--green-mid);
    color: #fff;
}

.btn-full:hover {
    background: var(--green-dark);
}

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

.section-alt {
    background: var(--bg-alt);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header h2 {
    font-size: 40px;
    font-weight: 800;
    color: var(--green-dark);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-header p {
    font-size: 17px;
    color: var(--text-muted);
}

/* ============ Grid 3 (About) ============ */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.card {
    background: #fff;
    padding: 40px 32px;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(27, 67, 50, 0.08);
}

.card-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--green-dark);
}

.card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
}

/* ============ Grid 2 (Products) ============ */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.product-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(27, 67, 50, 0.1);
}

.product-img {
    height: 200px;
    display: flex;
    align-items: flex-end;
    padding: 20px;
}

.product-label {
    background: rgba(255, 255, 255, 0.9);
    color: var(--green-dark);
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.product-card h3 {
    font-size: 22px;
    color: var(--green-dark);
    padding: 24px 24px 8px;
}

.product-card > p {
    padding: 0 24px;
    color: var(--text-muted);
    font-size: 15px;
}

.product-features {
    list-style: none;
    padding: 16px 24px 28px;
}

.product-features li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--text-muted);
}

.product-features li::before {
    content: "✓";
    color: var(--green);
    font-weight: bold;
    margin-right: 8px;
}

/* ============ Grid 4 (Applications) ============ */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.app-card {
    text-align: center;
    padding: 32px 20px;
    background: #fff;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.app-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.app-card h3 {
    font-size: 18px;
    color: var(--green-dark);
    margin-bottom: 8px;
}

.app-card p {
    font-size: 14px;
    color: var(--text-muted);
}

/* ============ Certifications ============ */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.cert-item {
    background: #fff;
    border: 2px solid var(--green-pale);
    border-radius: 10px;
    padding: 28px 20px;
    text-align: center;
    font-weight: 700;
    font-size: 18px;
    color: var(--green-dark);
}

.cert-item.cert-in-progress {
    border-style: dashed;
    border-color: #d4a373;
    color: #9c6644;
}

.cert-item.cert-in-progress small {
    color: #9c6644;
}

.cert-item small {
    display: block;
    font-weight: 400;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 6px;
}

.soon-badge {
    display: inline-block;
    background: #fef3c7;
    color: #92400e;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 100px;
    margin-left: 4px;
}

.cert-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    font-style: italic;
}

/* ============ Contact ============ */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-form {
    background: #fff;
    padding: 36px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

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

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    margin-bottom: 16px;
    background: #fff;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--green);
}

.contact-info h3 {
    font-size: 22px;
    color: var(--green-dark);
    margin-bottom: 20px;
}

.contact-info p {
    margin-bottom: 12px;
    color: var(--text-muted);
}

.contact-info a {
    color: var(--green-mid);
}

.contact-note {
    margin-top: 24px;
    padding: 16px;
    background: var(--green-pale);
    border-radius: 8px;
    font-size: 14px;
}

.form-status {
    margin-top: 12px;
    font-size: 14px;
    text-align: center;
    color: var(--green-mid);
    min-height: 20px;
}

/* ============ Footer ============ */
.footer {
    background: var(--green-dark);
    color: #fff;
    padding: 60px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 32px;
}

.logo-footer {
    color: #fff;
    margin-bottom: 12px;
}

.logo-footer .logo-tech {
    color: var(--green-light);
}

.footer-content p {
    opacity: 0.8;
    font-size: 14px;
    max-width: 320px;
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    opacity: 0.8;
    font-size: 14px;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: 24px;
    font-size: 13px;
    opacity: 0.6;
}

/* ============ Page Hero (inner pages) ============ */
.page-hero {
    background: linear-gradient(135deg, var(--green-dark) 0%, var(--green-mid) 100%);
    color: #fff;
    padding: 80px 0 60px;
    text-align: center;
}

.page-hero h1 {
    font-size: 44px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.page-hero p {
    font-size: 18px;
    opacity: 0.9;
    max-width: 640px;
    margin: 0 auto;
}

.section-header.left {
    text-align: left;
    margin: 0 0 40px;
}

.section-header.left h2 {
    font-size: 32px;
    margin-bottom: 8px;
}

/* ============ Product Mini Grid (product list page) ============ */
.grid-prod {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.prod-mini {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.prod-mini:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(27, 67, 50, 0.1);
}

.prod-mini-img {
    height: 120px;
}

.prod-mini h4 {
    font-size: 15px;
    color: var(--green-dark);
    padding: 14px 14px 4px;
    line-height: 1.3;
}

.prod-mini p {
    font-size: 12.5px;
    color: var(--text-muted);
    padding: 0 14px 16px;
    line-height: 1.5;
}

@media (max-width: 900px) {
    .grid-prod {
        grid-template-columns: repeat(2, 1fr);
    }
    .page-hero h1 {
        font-size: 30px;
    }
}
@media (max-width: 900px) {
    .nav-links {
        display: none;
    }
    .mobile-menu-btn {
        display: block;
    }
    .hero h1 {
        font-size: 36px;
    }
    .hero-sub {
        font-size: 16px;
    }
    .section-header h2 {
        font-size: 28px;
    }
    .grid-3,
    .grid-2,
    .grid-4,
    .cert-grid {
        grid-template-columns: 1fr;
    }
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .section {
        padding: 60px 0;
    }
    .hero {
        padding: 80px 0;
    }
}