/* ========================================
   ANTU TRAVEL — Design System
   ======================================== */

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

:root {
    /* Brand Colors */
    --brand-primary: #0891b2;
    --brand-dark: #164e63;
    --brand-darker: #0c3a4a;
    --brand-light: #cffafe;
    --brand-lighter: #f0fdfa;

    /* Accent */
    --accent-gold: #f59e0b;
    --accent-gold-hover: #d97706;

    /* Neutrals */
    --text-dark: #1e293b;
    --text-body: #475569;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --bg-white: #ffffff;
    --bg-light: #f8fafc;

    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.12);
    --shadow-card: 0 2px 12px rgba(0,0,0,.06);
    --shadow-card-hover: 0 8px 30px rgba(0,0,0,.1);

    /* Transitions */
    --ease: cubic-bezier(.4, 0, .2, 1);
    --duration: .3s;

    /* Layout */
    --header-h: 76px;
}

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
    font-family: var(--font);
    color: var(--text-body);
    background: var(--bg-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* --- Buttons --- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px;
    font-family: var(--font);
    font-size: .95rem; font-weight: 600;
    border-radius: 50px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
}
.btn-primary {
    background: var(--accent-gold);
    color: #fff;
    border-color: var(--accent-gold);
}
.btn-primary:hover {
    background: var(--accent-gold-hover);
    border-color: var(--accent-gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245,158,11,.35);
}
.btn-outline-light {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,.5);
}
.btn-outline-light:hover {
    background: #fff;
    color: var(--brand-dark);
    border-color: #fff;
}

/* ========================================
   HEADER
   ======================================== */
.site-header {
    position: fixed; top: 0; left: 0; width: 100%;
    height: var(--header-h);
    z-index: 1000;
    background: transparent;
    transition: background var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}
.site-header.scrolled {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
}
.site-header.scrolled .nav-link { color: var(--text-dark); }
.site-header.scrolled .nav-link:hover,
.site-header.scrolled .nav-link.active { color: var(--brand-primary); }
.site-header.scrolled .hamburger { color: var(--text-dark); }

.nav-wrapper {
    display: flex; justify-content: space-between; align-items: center;
    height: var(--header-h);
}

/* Logo */
.logo-area {
    display: flex; align-items: center; gap: 12px;
    color: #fff;
    transition: color var(--duration) var(--ease);
}
.site-header.scrolled .logo-area { color: var(--text-dark); }
.logo-img { height: 44px; border-radius: 8px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.main-name { font-size: 1.1rem; font-weight: 800; letter-spacing: .5px; }
.sub-name { font-size: .7rem; font-weight: 500; letter-spacing: 2px; opacity: .75; }

/* Nav */
.main-nav ul { display: flex; gap: 36px; }
.nav-link {
    font-size: .9rem; font-weight: 600; color: rgba(255,255,255,.85);
    position: relative; padding: 4px 0;
    transition: color var(--duration) var(--ease);
}
.nav-link::after {
    content: ''; position: absolute; bottom: -2px; left: 0;
    width: 0; height: 2px; background: var(--accent-gold);
    transition: width var(--duration) var(--ease);
}
.nav-link:hover, .nav-link.active { color: #fff; }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

/* Hamburger */
.hamburger {
    display: none; background: none; border: none;
    color: #fff; cursor: pointer; padding: 4px;
    transition: color var(--duration) var(--ease);
}

/* Mobile Drawer */
.mobile-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,.4); z-index: 1001;
    opacity: 0; transition: opacity var(--duration) var(--ease);
}
.mobile-overlay.active { display: block; opacity: 1; }
.mobile-drawer {
    position: fixed; top: 0; right: -300px;
    width: 280px; height: 100vh;
    background: var(--bg-white);
    z-index: 1002;
    padding: 24px;
    transition: right var(--duration) var(--ease);
    box-shadow: var(--shadow-lg);
}
.mobile-drawer.active { right: 0; }
.drawer-close {
    background: none; border: none; color: var(--text-dark);
    cursor: pointer; margin-left: auto; display: block; margin-bottom: 24px;
}
.drawer-nav { display: flex; flex-direction: column; gap: 8px; }
.drawer-link {
    display: block; padding: 12px 16px; font-size: 1rem; font-weight: 600;
    color: var(--text-dark); border-radius: 10px;
    transition: all var(--duration) var(--ease);
}
.drawer-link:hover { background: var(--brand-lighter); color: var(--brand-primary); }

/* ========================================
   HERO
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0;
    background:
        url('https://images.unsplash.com/photo-1569154941061-e231b4725ef1?w=1920&q=80') center/cover no-repeat;
    background-color: var(--brand-dark);
}
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(12,58,74,.88) 0%, rgba(8,145,178,.72) 100%);
}
.hero-content {
    position: relative; z-index: 2;
    text-align: center; color: #fff;
    padding: 120px 24px 80px;
    max-width: 800px; margin: 0 auto;
}
.hero-badge {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 50px;
    font-size: .8rem; font-weight: 600; letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 24px;
    animation: heroFadeUp .8s var(--ease) both;
}
.hero-content h1 {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800; line-height: 1.15;
    margin-bottom: 20px;
    animation: heroFadeUp .8s var(--ease) .15s both;
}
.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: rgba(255,255,255,.85);
    max-width: 600px; margin: 0 auto 36px;
    line-height: 1.7;
    animation: heroFadeUp .8s var(--ease) .3s both;
}
.hero-actions {
    display: flex; justify-content: center; gap: 16px; flex-wrap: wrap;
    margin-bottom: 56px;
    animation: heroFadeUp .8s var(--ease) .45s both;
}

/* Trust Badges */
.trust-badges {
    display: flex; justify-content: center; flex-wrap: wrap; gap: 28px;
    animation: heroFadeUp .8s var(--ease) .6s both;
}
.trust-badge {
    display: flex; align-items: center; gap: 8px;
    font-size: .82rem; font-weight: 500;
    color: rgba(255,255,255,.8);
}
.trust-icon { width: 18px; height: 18px; flex-shrink: 0; }

@keyframes heroFadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   SECTION COMMON
   ======================================== */
.section { padding: 100px 0; }
.section-header { text-align: center; max-width: 600px; margin: 0 auto 56px; }
.section-label {
    display: inline-block;
    font-size: .8rem; font-weight: 700; letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--brand-primary);
    margin-bottom: 12px;
}
.section-title {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 800; color: var(--text-dark);
    margin-bottom: 16px; line-height: 1.2;
}
.section-desc {
    font-size: 1.05rem; color: var(--text-body); line-height: 1.7;
}

/* ========================================
   SERVICES
   ======================================== */
.services { background: var(--bg-white); }
.services-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.service-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 32px;
    transition: all var(--duration) var(--ease);
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: transparent;
}
.service-icon {
    width: 56px; height: 56px;
    display: flex; align-items: center; justify-content: center;
    background: var(--brand-lighter);
    border-radius: 14px;
    margin-bottom: 24px;
    color: var(--brand-primary);
    transition: all var(--duration) var(--ease);
}
.service-icon svg { width: 28px; height: 28px; }
.service-card:hover .service-icon {
    background: var(--brand-primary);
    color: #fff;
}
.service-card h3 {
    font-size: 1.2rem; font-weight: 700; color: var(--text-dark);
    margin-bottom: 12px;
}
.service-card p {
    font-size: .92rem; line-height: 1.7; color: var(--text-body);
    margin-bottom: 20px;
}
.card-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: .88rem; font-weight: 600;
    color: var(--brand-primary);
    transition: gap var(--duration) var(--ease);
}
.card-link:hover { gap: 10px; }

/* ========================================
   STATISTICS
   ======================================== */
.stats-section {
    background: linear-gradient(135deg, var(--brand-darker) 0%, var(--brand-dark) 50%, var(--brand-primary) 100%);
    padding: 80px 0;
}
.stats-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 40px; text-align: center; color: #fff;
}
.stat-number {
    display: block;
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800; line-height: 1;
    margin-bottom: 8px;
}
.stat-label {
    font-size: .95rem; font-weight: 500;
    opacity: .85;
}

/* ========================================
   ABOUT
   ======================================== */
.about { background: var(--bg-light); }
.about-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 60px; align-items: center;
}
.about-text .section-label { text-align: left; }
.about-text .section-title { text-align: left; }
.about-lead {
    font-size: 1.05rem; font-weight: 500; color: var(--text-dark);
    line-height: 1.7; margin-bottom: 16px;
}
.about-text > p {
    margin-bottom: 24px; line-height: 1.7;
}
.about-list { display: flex; flex-direction: column; gap: 12px; }
.about-list li {
    display: flex; align-items: center; gap: 10px;
    font-size: .95rem; font-weight: 500; color: var(--text-dark);
}
.check-icon { width: 20px; height: 20px; color: var(--brand-primary); flex-shrink: 0; }

/* About Image */
.about-image {
    position: relative; border-radius: 20px; overflow: hidden;
}
.about-image img {
    width: 100%; height: 480px; object-fit: cover;
    border-radius: 20px;
}
.about-image-accent {
    position: absolute; top: -20px; right: -20px;
    width: 120px; height: 120px;
    background: var(--brand-primary);
    border-radius: 20px;
    z-index: -1; opacity: .15;
}

/* ========================================
   CONTACT
   ======================================== */
.contact { background: var(--bg-white); }
.contact-grid {
    display: grid; grid-template-columns: 1fr 1.2fr;
    gap: 48px; align-items: start;
}

/* Info Cards */
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.info-card {
    display: flex; align-items: flex-start; gap: 16px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: 14px;
    transition: all var(--duration) var(--ease);
}
.info-card:hover { background: var(--brand-lighter); }
.info-icon {
    width: 44px; height: 44px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    background: var(--brand-lighter);
    border-radius: 12px;
    color: var(--brand-primary);
}
.info-icon svg { width: 22px; height: 22px; }
.info-card h4 {
    font-size: .85rem; font-weight: 700; color: var(--text-dark);
    margin-bottom: 2px;
}
.info-card p {
    font-size: .88rem; color: var(--text-body); line-height: 1.5;
}

/* Form */
.contact-form-wrap {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 36px;
}
.form-field { margin-bottom: 20px; }
.form-field label {
    display: block; font-size: .85rem; font-weight: 600;
    color: var(--text-dark); margin-bottom: 6px;
}
.required { color: #ef4444; }
.form-field input,
.form-field textarea {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font);
    font-size: .92rem;
    color: var(--text-dark);
    background: var(--bg-light);
    border: 1.5px solid var(--border);
    border-radius: 10px;
    outline: none;
    transition: all var(--duration) var(--ease);
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--text-light); }
.form-field input:focus,
.form-field textarea:focus {
    border-color: var(--brand-primary);
    background: var(--bg-white);
    box-shadow: 0 0 0 3px rgba(8,145,178,.12);
}
.form-field textarea { resize: vertical; min-height: 100px; }

.btn-submit {
    width: 100%; justify-content: center;
    padding: 16px 32px;
    font-size: 1rem; margin-top: 8px;
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
    background: var(--text-dark);
    color: rgba(255,255,255,.7);
    padding: 64px 0 0;
}
.footer-grid {
    display: grid; grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand {
    display: flex; align-items: center; gap: 12px;
    color: #fff; margin-bottom: 16px;
}
.footer-logo { height: 40px; border-radius: 8px; }
.footer-brand .main-name { font-size: 1rem; }
.footer-brand .sub-name { font-size: .65rem; }
.footer-desc { font-size: .9rem; line-height: 1.7; max-width: 320px; }
.footer-col h4 {
    color: #fff; font-size: .9rem; font-weight: 700;
    margin-bottom: 20px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links li { font-size: .88rem; }
.footer-links a {
    transition: color var(--duration) var(--ease);
}
.footer-links a:hover { color: var(--brand-primary); }
.footer-bottom {
    padding: 24px 0; text-align: center;
    font-size: .82rem; opacity: .6;
}

/* ========================================
   SCROLL REVEAL
   ======================================== */
.reveal {
    opacity: 0; transform: translateY(30px);
    transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.visible {
    opacity: 1; transform: translateY(0);
}

/* ========================================
   RESPONSIVE
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { gap: 40px; }
    .about-image img { height: 400px; }
}

/* Mobile */
@media (max-width: 768px) {
    :root { --header-h: 64px; }

    .main-nav { display: none; }
    .hamburger { display: block; }

    .hero-content { padding: 100px 16px 60px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .trust-badges { gap: 16px; }
    .trust-badge { font-size: .75rem; }

    .section { padding: 72px 0; }
    .section-header { margin-bottom: 40px; }

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

    .about-grid { grid-template-columns: 1fr; }
    .about-image { order: -1; }
    .about-image img { height: 280px; }
    .about-image-accent { display: none; }

    .contact-grid { grid-template-columns: 1fr; }
    .contact-form-wrap { padding: 24px; }

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

/* Small Mobile */
@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-content h1 { font-size: 1.8rem; }
    .btn { padding: 12px 24px; font-size: .88rem; }
    .service-card { padding: 28px 24px; }
    .section { padding: 56px 0; }
    .stat-number { font-size: 2.2rem; }
}