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

:root {
    --color-primary: #1a3a4a;
    --color-primary-light: #2a5a6a;
    --color-accent: #3ea8a0;
    --color-accent-light: #e6f5f3;
    --color-dark: #0f2b36;
    --color-text: #2c3e50;
    --color-text-light: #5a6f7d;
    --color-bg: #f8fafb;
    --color-white: #ffffff;
    --color-border: #e2e8ee;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-lg: 20px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

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

a {
    text-decoration: none;
    color: inherit;
}

/* ─── Navbar ─── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
}

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

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo-icon {
    color: var(--color-accent);
    font-size: 1rem;
}

.logo-ou {
    font-weight: 400;
    color: var(--color-text-light);
}

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

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
    transition: color 0.2s;
}

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

.btn-nav {
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: 10px 24px;
    border-radius: 8px;
    transition: background 0.2s;
}

.btn-nav:hover {
    background: var(--color-primary-light) !important;
}

/* ─── Hero ─── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0f2b36 0%, #1a4a5a 50%, #1a3a4a 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(62,168,160,0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(62,168,160,0.1) 0%, transparent 50%);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
    opacity: 0.08;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 140px 0 100px;
    max-width: 700px;
}

.hero-tagline {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.15;
    margin-bottom: 24px;
}

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

.hero-sub {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 520px;
}

.btn-primary {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-white);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 16px 36px;
    border-radius: 10px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(62,168,160,0.35);
}

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

.section-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.section-label.light {
    color: rgba(255,255,255,0.7);
}

.section-header {
    max-width: 580px;
    margin-bottom: 60px;
}

.section-header.center {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2, .about-text h2, .why-text h2 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--color-text-light);
    font-size: 1.05rem;
}

/* ─── Grid ─── */
.grid {
    display: grid;
    gap: 60px;
    align-items: center;
}

.two-col {
    grid-template-columns: 1fr 1fr;
}

.three-col {
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.grid.reverse {
    direction: rtl;
}

.grid.reverse > * {
    direction: ltr;
}

/* ─── About ─── */
.about {
    background: var(--color-bg);
}

.about-image img, .why-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.about-text p, .why-text p {
    color: var(--color-text-light);
    margin-bottom: 16px;
    font-size: 1.02rem;
}

.stats-row {
    display: flex;
    gap: 40px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ─── Services ─── */
.service-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: var(--color-accent-light);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.service-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ─── Why Us ─── */
.why-us {
    background: var(--color-bg);
}

.check-list {
    list-style: none;
    margin-top: 28px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.check-list li {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.check-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-accent-light);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    margin-top: 2px;
}

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

.check-list strong {
    color: var(--color-primary);
}

/* ─── CTA / Contact ─── */
.cta-section {
    background: linear-gradient(135deg, #0f2b36, #1a4a5a);
    padding: 100px 0;
}

.cta-box {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.cta-content h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
    line-height: 1.2;
}

.cta-content > p {
    color: rgba(255,255,255,0.65);
    font-size: 1.02rem;
    margin-bottom: 36px;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(62,168,160,0.15);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255,255,255,0.45);
    margin-bottom: 4px;
}

.contact-item a,
.contact-item > div > span:last-child {
    color: rgba(255,255,255,0.85);
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.cta-image img {
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    width: 100%;
    height: 380px;
    object-fit: cover;
}

/* ─── Footer ─── */
.footer {
    background: var(--color-dark);
    padding: 60px 0 40px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 32px;
}

.footer-brand p {
    color: rgba(255,255,255,0.45);
    font-size: 0.9rem;
    margin-top: 12px;
}

.footer-brand .logo {
    color: var(--color-white);
    justify-content: center;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px;
    width: 100%;
}

.footer-bottom p {
    color: rgba(255,255,255,0.3);
    font-size: 0.82rem;
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
    .two-col, .grid.reverse, .cta-box {
        grid-template-columns: 1fr;
    }

    .three-col {
        grid-template-columns: 1fr 1fr;
    }

    .grid.reverse {
        direction: ltr;
    }

    .hero-content {
        padding: 120px 0 80px;
    }

    .stats-row {
        gap: 24px;
    }

    .about-image img, .why-image img {
        height: 300px;
    }

    .cta-image {
        order: -1;
    }

    .cta-image img {
        height: 260px;
    }
}

@media (max-width: 640px) {
    .three-col {
        grid-template-columns: 1fr;
    }

    .nav-links {
        gap: 16px;
    }

    .nav-links li:not(:last-child) {
        display: none;
    }

    .section {
        padding: 70px 0;
    }

    .stats-row {
        flex-direction: column;
        gap: 16px;
    }
}