/* =========================================================
   CHEVRON UNITED CO FOR GENERAL TRADING
   Stylesheet - Corporate / Professional theme
   ========================================================= */

:root {
  --color-primary: #0b2545;
  --color-primary-dark: #061a35;
  --color-primary-light: #13315c;
  --color-accent: #c9a227;
  --color-accent-light: #e2b842;
  --color-text: #1f2937;
  --color-text-muted: #5b6470;
  --color-bg: #ffffff;
  --color-bg-alt: #f6f8fb;
  --color-border: #e3e7ee;
  --shadow-sm: 0 2px 6px rgba(11, 37, 69, 0.06);
  --shadow-md: 0 8px 24px rgba(11, 37, 69, 0.10);
  --shadow-lg: 0 18px 40px rgba(11, 37, 69, 0.14);
  --radius: 6px;
  --radius-lg: 12px;
  --container: 1200px;
  --header-h: 80px;
  --transition: 0.25s ease;
  --font-heading: 'Poppins', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', Arial, sans-serif;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font-body); font-size: 16px; line-height: 1.65; color: var(--color-text); background: var(--color-bg); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--color-primary); margin: 0 0 0.6em; line-height: 1.25; font-weight: 600; }
h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
ul { padding-left: 1.2rem; margin: 0 0 1em; }

/* Layout */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5rem 0; }
.section--alt { background: var(--color-bg-alt); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 3rem; }
.section-head .eyebrow { display: inline-block; text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.78rem; color: var(--color-accent); font-weight: 600; margin-bottom: 0.75rem; }
.section-head h2 { margin-bottom: 0.75rem; }
.section-head p { color: var(--color-text-muted); font-size: 1.05rem; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.85rem 1.6rem; font-family: var(--font-heading); font-weight: 500; font-size: 0.95rem; border-radius: var(--radius); border: 2px solid transparent; cursor: pointer; transition: all var(--transition); text-decoration: none; white-space: nowrap; }
.btn--primary { background: var(--color-accent); color: var(--color-primary-dark); border-color: var(--color-accent); }
.btn--primary:hover { background: var(--color-accent-light); border-color: var(--color-accent-light); color: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.btn--outline:hover { background: #fff; color: var(--color-primary); border-color: #fff; }
.btn--dark { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn--dark:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* Header / Navigation */
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--color-border); height: var(--header-h); display: flex; align-items: center; }
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: flex; align-items: center; gap: 0.8rem; }
.brand__mark { width: 44px; height: 44px; background: var(--color-primary); color: var(--color-accent); border-radius: var(--radius); display: grid; place-items: center; font-family: var(--font-heading); font-weight: 700; font-size: 1.25rem; letter-spacing: 0.5px; flex-shrink: 0; }
.brand__text { line-height: 1.15; }
.brand__name { font-family: var(--font-heading); font-weight: 700; font-size: 1.05rem; color: var(--color-primary); letter-spacing: 0.3px; }
.brand__tag { font-size: 0.72rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.15em; }
.nav { display: flex; align-items: center; gap: 0.5rem; }
.nav a { padding: 0.5rem 1rem; font-family: var(--font-heading); font-weight: 500; font-size: 0.95rem; color: var(--color-primary); border-radius: var(--radius); position: relative; }
.nav a::after { content: ''; position: absolute; left: 50%; bottom: 4px; width: 0; height: 2px; background: var(--color-accent); transition: all var(--transition); transform: translateX(-50%); }
.nav a:hover::after, .nav a.is-active::after { width: calc(100% - 2rem); }
.nav a.is-active { color: var(--color-primary); }
.nav .btn { margin-left: 1rem; padding: 0.6rem 1.2rem; }

.nav-toggle { display: none; background: none; border: 0; width: 42px; height: 42px; cursor: pointer; padding: 0; flex-shrink: 0; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--color-primary); margin: 5px auto; transition: all var(--transition); }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero */
.hero { position: relative; background: linear-gradient(135deg, rgba(6,26,53,0.92) 0%, rgba(11,37,69,0.85) 60%, rgba(19,49,92,0.80) 100%), url('https://images.unsplash.com/photo-1494412519320-aa613dfb7738?auto=format&fit=crop&w=2000&q=70') center/cover no-repeat; color: #fff; padding: 7rem 0 6rem; overflow: hidden; }
.hero::after { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 80% 20%, rgba(201,162,39,0.22), transparent 50%); pointer-events: none; }
.hero__inner { position: relative; display: grid; grid-template-columns: 1.1fr 0.9fr; align-items: center; gap: 3rem; z-index: 1; }
.hero__eyebrow { display: inline-block; background: rgba(201,162,39,0.18); color: var(--color-accent-light); padding: 0.4rem 0.9rem; border-radius: 999px; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.2em; font-weight: 600; margin-bottom: 1.5rem; }
.hero h1 { color: #fff; margin-bottom: 1.2rem; }
.hero h1 .accent { color: var(--color-accent); }
.hero p.lead { font-size: 1.15rem; color: rgba(255,255,255,0.85); max-width: 560px; margin-bottom: 2rem; }
.hero__cta { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius-lg); padding: 1.8rem; backdrop-filter: blur(6px); }
.hero__stat .num { display: block; font-family: var(--font-heading); font-size: 2.2rem; font-weight: 700; color: var(--color-accent); line-height: 1; }
.hero__stat .lbl { display: block; margin-top: 0.4rem; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.12em; color: rgba(255,255,255,0.7); }

/* Page header (interior pages) */
.page-header { background: linear-gradient(135deg, rgba(6,26,53,0.92) 0%, rgba(19,49,92,0.85) 100%), url('https://images.unsplash.com/photo-1577017040065-650ee4d43339?auto=format&fit=crop&w=1800&q=70') center/cover no-repeat; color: #fff; padding: 5rem 0 3rem; text-align: center; }
.page-header h1 { color: #fff; margin-bottom: 0.5rem; }
.page-header p { color: rgba(255,255,255,0.85); max-width: 700px; margin: 0 auto; font-size: 1.05rem; }
.breadcrumbs { margin-top: 1.2rem; font-size: 0.88rem; color: rgba(255,255,255,0.7); }
.breadcrumbs a { color: var(--color-accent-light); }
.breadcrumbs span { margin: 0 0.5rem; opacity: 0.6; }

/* Cards / Grids */
.grid { display: grid; gap: 1.8rem; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 2rem; transition: all var(--transition); height: 100%; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(201,162,39,0.4); }
.card__icon { width: 56px; height: 56px; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); color: var(--color-accent); border-radius: var(--radius); display: grid; place-items: center; margin-bottom: 1.2rem; font-size: 1.6rem; }
.card h3 { margin-bottom: 0.5rem; }
.card p { color: var(--color-text-muted); margin-bottom: 0; font-size: 0.97rem; }
.card__link { display: inline-flex; align-items: center; gap: 0.4rem; margin-top: 1rem; font-weight: 600; font-size: 0.92rem; color: var(--color-primary); }
.card__link:hover { color: var(--color-accent); gap: 0.7rem; }

/* Feature row */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 4rem; }
.feature-row + .feature-row { margin-top: 5rem; }
.feature-row.reverse { direction: rtl; }
.feature-row.reverse > * { direction: ltr; }
.feature-row img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.feature-row h2 { margin-bottom: 1rem; }
.feature-row .checklist { list-style: none; padding: 0; margin-top: 1.2rem; }
.feature-row .checklist li { position: relative; padding-left: 1.8rem; margin-bottom: 0.6rem; color: var(--color-text); }
.feature-row .checklist li::before { content: '✓'; position: absolute; left: 0; top: 0; width: 22px; height: 22px; background: var(--color-accent); color: var(--color-primary-dark); border-radius: 50%; display: grid; place-items: center; font-size: 0.8rem; font-weight: 700; }

/* CTA banner */
.cta-banner { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%); color: #fff; text-align: center; padding: 4.5rem 0; position: relative; overflow: hidden; }
.cta-banner::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 20% 50%, rgba(201,162,39,0.18), transparent 50%); }
.cta-banner > .container { position: relative; }
.cta-banner h2 { color: #fff; margin-bottom: 0.6rem; }
.cta-banner p { color: rgba(255,255,255,0.85); margin-bottom: 2rem; max-width: 600px; margin-left: auto; margin-right: auto; }
.cta-banner .btn-row { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* Stats strip */
.stats-strip { background: var(--color-primary); color: #fff; padding: 3.5rem 0; }
.stats-strip .grid--4 { gap: 1rem; text-align: center; }
.stat-item .num { display: block; font-family: var(--font-heading); font-size: 2.8rem; font-weight: 700; color: var(--color-accent); line-height: 1; }
.stat-item .lbl { display: block; margin-top: 0.5rem; text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.82rem; color: rgba(255,255,255,0.75); }

/* Product card */
.product-card { background: #fff; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--color-border); transition: all var(--transition); }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.product-card__media { height: 200px; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); position: relative; display: grid; place-items: center; color: var(--color-accent); font-size: 3.2rem; }
.product-card__media::after { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 70% 30%, rgba(201,162,39,0.25), transparent 60%); }
.product-card__body { padding: 1.8rem; }
.product-card h3 { margin-bottom: 0.6rem; }
.product-card ul { padding-left: 1.1rem; margin: 1rem 0 0; color: var(--color-text-muted); font-size: 0.94rem; }
.product-card ul li { margin-bottom: 0.3rem; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 3rem; }
.contact-info { background: var(--color-primary); color: #fff; padding: 2.5rem; border-radius: var(--radius-lg); }
.contact-info h3 { color: #fff; margin-bottom: 1.2rem; }
.contact-info p { color: rgba(255,255,255,0.85); }
.contact-list { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.contact-list li { display: flex; gap: 1rem; margin-bottom: 1.4rem; align-items: flex-start; }
.contact-list .ico { width: 40px; height: 40px; border-radius: var(--radius); background: rgba(201,162,39,0.18); color: var(--color-accent); display: grid; place-items: center; flex-shrink: 0; font-size: 1.05rem; }
.contact-list strong { display: block; color: #fff; margin-bottom: 0.15rem; font-size: 0.92rem; }
.contact-list span, .contact-list a { color: rgba(255,255,255,0.82); font-size: 0.95rem; line-height: 1.45; }
.contact-list a:hover { color: var(--color-accent-light); }

/* Form */
.contact-form { background: #fff; padding: 2.5rem; border-radius: var(--radius-lg); border: 1px solid var(--color-border); box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 600; color: var(--color-primary); margin-bottom: 0.4rem; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 0.85rem 1rem; border: 1px solid var(--color-border); border-radius: var(--radius); font-family: inherit; font-size: 0.97rem; color: var(--color-text); background: #fff; transition: all var(--transition); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(201,162,39,0.18); }
.form-group textarea { min-height: 130px; resize: vertical; }
.form-status { display: none; margin-top: 1rem; padding: 0.9rem 1rem; border-radius: var(--radius); font-size: 0.92rem; }
.form-status.success { display: block; background: #e6f7ec; color: #166534; border: 1px solid #bbf7d0; }
.form-status.error { display: block; background: #fde8e8; color: #991b1b; border: 1px solid #fecaca; }

.map-wrap { margin-top: 3rem; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.map-wrap iframe { display: block; width: 100%; height: 380px; border: 0; }

/* Footer */
.site-footer { background: var(--color-primary-dark); color: rgba(255,255,255,0.75); padding: 4rem 0 0; }
.site-footer h4 { color: #fff; font-size: 1rem; letter-spacing: 0.05em; margin-bottom: 1.2rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 2.5rem; padding-bottom: 3rem; }
.footer-brand .brand__name { color: #fff; }
.footer-brand p { color: rgba(255,255,255,0.65); font-size: 0.92rem; margin-top: 1rem; }
.footer-list { list-style: none; padding: 0; margin: 0; }
.footer-list li { margin-bottom: 0.6rem; }
.footer-list a { color: rgba(255,255,255,0.7); font-size: 0.93rem; }
.footer-list a:hover { color: var(--color-accent); }
.footer-contact-list li { display: flex; gap: 0.6rem; margin-bottom: 0.7rem; font-size: 0.92rem; color: rgba(255,255,255,0.75); }
.footer-contact-list .ico { color: var(--color-accent); flex-shrink: 0; }
.footer-bar { border-top: 1px solid rgba(255,255,255,0.1); padding: 1.4rem 0; display: flex; justify-content: space-between; align-items: center; font-size: 0.85rem; color: rgba(255,255,255,0.55); flex-wrap: wrap; gap: 1rem; }
.footer-bar a { color: rgba(255,255,255,0.7); }
.footer-bar a:hover { color: var(--color-accent); }

/* Animations */
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.animate-up { animation: fadeUp 0.7s ease both; }
.animate-up.delay-1 { animation-delay: 0.1s; }
.animate-up.delay-2 { animation-delay: 0.2s; }
.animate-up.delay-3 { animation-delay: 0.3s; }

/* Responsive */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero__inner { grid-template-columns: 1fr; }
  .feature-row { grid-template-columns: 1fr; gap: 2rem; }
  .feature-row.reverse { direction: ltr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 3.5rem 0; }
  .hero { padding: 4rem 0 3.5rem; }
  .hero__stats { grid-template-columns: 1fr; }
  .grid--3, .grid--4, .grid--2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .site-header .container { gap: 0.75rem; }
  .brand { min-width: 0; flex: 0 1 auto; overflow: hidden; }
  .brand__name { font-size: 0.95rem; white-space: nowrap; }
  .brand__tag { display: none; }
  .nav-toggle { display: block; }
  .nav { position: absolute; top: var(--header-h); left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 1rem; gap: 0.2rem; box-shadow: var(--shadow-md); border-bottom: 1px solid var(--color-border); transform: translateY(-150%); transition: transform 0.3s ease; }
  .nav.is-open { transform: translateY(0); }
  .nav a { padding: 0.85rem 1rem; }
  .nav .btn { margin: 0.5rem 0 0; text-align: center; justify-content: center; }
  .footer-bar { flex-direction: column; text-align: center; }
}