*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: #fff; background: linear-gradient(rgba(8,15,28,.55), rgba(8,15,28,.55)), url('images/metalback.JPG') center/cover fixed no-repeat; line-height: 1.6;
}

:root {
    --navy:     #16233f;
    --blue-500: #3f7fc4;
    --blue-600: #2a5f9e;
    --blue-800: #1a3a6a;
    --blue-900: #0f2340;
    --steel-50:  #f7f8fa;
    --steel-100: #eaecf0;
    --steel-200: #d0d4da;
    --steel-300: #a8aeb8;
    --steel-400: #7c8590;
    --steel-500: #5b636d;
    --metallic: linear-gradient(180deg, #eef0f3 0%, #d4d8de 35%, #aeb4bf 65%, #c8ccd4 100%);
    --metallic-top:  linear-gradient(180deg, #ffffff 0%, #e2e5ea 40%, #c6cbd3 100%);
    --metallic-dark: linear-gradient(180deg, #2b3d63 0%, #1a2a4a 50%, #0f1c33 100%);
}

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

/* ─── Brushed metal texture ─── */
.brushed { position: relative; }
.brushed::before {
    content: '';
    position: absolute; inset: 0; pointer-events: none; opacity: .18;
    background:
        repeating-linear-gradient(90deg,
            transparent 0px, transparent 3px,
            rgba(255,255,255,.35) 3px, rgba(255,255,255,.35) 4px),
        repeating-linear-gradient(90deg,
            transparent 0px, transparent 7px,
            rgba(0,0,0,.12) 7px, rgba(0,0,0,.12) 8px);
    border-radius: inherit;
}

/* ─── Header ─── */
header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    padding: 14px 0;
    background: var(--metallic-top);
    border-bottom: 2px solid var(--steel-300);
    box-shadow: 0 2px 12px rgba(0,0,0,.15), inset 0 -1px 0 rgba(255,255,255,.6);
    transition: box-shadow .3s;
}
header.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,.25), inset 0 -1px 0 rgba(255,255,255,.6); }
header .container {
    display: flex; align-items: center; justify-content: space-between;
}
.logo img { display: block; height: 100px; width: auto; }
nav a {
    margin-left: 28px; text-decoration: none; font-size: 15px;
    font-weight: 600; color: var(--navy);
    padding: 8px 14px; border-radius: 6px;
    border: 1px solid transparent;
    transition: all .2s;
}
nav a:hover {
    color: var(--blue-600);
    background: rgba(255,255,255,.7);
    border-color: var(--steel-300);
    box-shadow: 0 2px 6px rgba(0,0,0,.08), inset 0 1px 0 #fff;
}
nav a.active {
    color: var(--blue-600);
    background: rgba(255,255,255,.7);
    border-color: var(--steel-300);
}

/* ─── Page Hero ─── */
.page-hero {
    padding: 170px 24px 60px;
    background: linear-gradient(rgba(8,15,28,.55), rgba(8,15,28,.55)), url('images/metalback.JPG') center/cover fixed no-repeat;
    text-align: center;
}
.page-hero h1 {
    font-size: clamp(40px, 6vw, 60px); font-weight: 900;
    letter-spacing: -1px; color: #fff;
    text-transform: uppercase; letter-spacing: 2px;
    text-shadow: 0 2px 10px rgba(0,0,0,.55), 0 1px 3px rgba(0,0,0,.4);
}
.page-hero p {
    max-width: 640px; margin: 16px auto 0;
    font-size: 17px; color: rgba(255,255,255,.92);
    text-shadow: 0 1px 4px rgba(0,0,0,.45);
}

/* ─── Video Grid ─── */
.video-section {
    padding: 80px 0;
    background: linear-gradient(rgba(8,15,28,.55), rgba(8,15,28,.55)), url('images/metalback.JPG') center/cover fixed no-repeat;
}
.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.video-card {
    background: linear-gradient(rgba(8,15,28,.35), rgba(8,15,28,.35)), url('images/metalback.JPG') center/cover no-repeat; border-radius: 10px; overflow: hidden;
    border: 1px solid var(--steel-400);
    box-shadow: 0 4px 14px rgba(15,35,64,.28), inset 0 1px 0 rgba(255,255,255,.35);
    transition: transform .25s, box-shadow .25s;
}
.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(15,35,64,.4), inset 0 1px 0 rgba(255,255,255,.35);
}
.video-card iframe {
    width: 100%; aspect-ratio: 16 / 9; display: block; border: 0;
}
.video-card .info {
    padding: 16px 20px 20px;
    background: rgba(10,18,34,.55);
    border-top: 1px solid rgba(255,255,255,.18);
}
.video-card .info h4 {
    font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 4px;
    text-shadow: 0 1px 3px rgba(0,0,0,.5);
}
.video-card .info p { font-size: 13px; color: rgba(255,255,255,.72); }


/* ─── Back link ─── */
.back-link {
    display: inline-block; margin-top: 48px;
    text-decoration: none; font-weight: 700; font-size: 15px;
    color: var(--blue-600);
    padding: 12px 24px; border-radius: 8px;
    background: var(--metallic);
    border: 1px solid var(--steel-300);
    box-shadow: 0 2px 6px rgba(0,0,0,.12), inset 0 1px 0 #fff;
    transition: all .2s;
}
.back-link:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(15,35,64,.2); }

/* ─── CTA ─── */
.cta {
    padding: 80px 0;
    background: var(--metallic-dark);
    color: #fff; text-align: center;
    border-top: 1px solid rgba(255,255,255,.1);
}
.cta h2 {
    font-size: 34px; font-weight: 800; margin-bottom: 32px;
    text-transform: uppercase; letter-spacing: 1.5px;
}
.cta-links {
    display: flex; justify-content: center; gap: 40px; flex-wrap: wrap;
}
.cta-links a {
    color: #fff; text-decoration: none; font-size: 18px;
    font-weight: 600; display: flex; align-items: center; gap: 14px;
    padding: 14px 26px; border-radius: 10px;
    border: 1px solid rgba(255,255,255,.25);
    background: rgba(255,255,255,.06);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 4px 12px rgba(0,0,0,.3);
    transition: all .2s;
}
.cta-links a:hover {
    background: rgba(255,255,255,.14);
    transform: translateY(-2px);
}
.cta-links .icon {
    width: 48px; height: 48px; border-radius: 50%;
    background: linear-gradient(180deg, #fff, var(--steel-200));
    color: var(--navy);
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; font-weight: 800;
    border: 1px solid var(--steel-300);
    box-shadow: inset 0 1px 0 #fff, 0 2px 6px rgba(0,0,0,.25);
    flex-shrink: 0;
}

/* ─── Footer ─── */
footer {
    background: #0a1220; padding: 26px 0;
    text-align: center; font-size: 13px; color: rgba(255,255,255,.35);
    border-top: 2px solid var(--blue-600);
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
    .page-hero { padding: 160px 24px 50px; }
    .video-section { padding: 60px 0; }
}
@media (max-width: 768px) {
    body, .page-hero, .video-section {
        background-attachment: scroll;
    }
    .logo img { height: 70px; }
    header { padding: 10px 0; }
    header .container { flex-direction: column; gap: 6px; }
    nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px; }
    nav a { margin: 0 6px; font-size: 14px; padding: 6px 10px; }
    .page-hero { padding: 140px 20px 40px; }
    .page-hero h1 { font-size: clamp(30px, 7vw, 40px); }
    .page-hero p { font-size: 16px; }
    .video-section { padding: 48px 0; }
    .video-grid { grid-template-columns: 1fr; gap: 20px; }
    .cta h2 { font-size: 28px; }
    .cta-links { flex-direction: column; align-items: center; gap: 20px; }
    .cta-links a { font-size: 17px; }
    .cta-links .icon { width: 44px; height: 44px; font-size: 18px; }
}
@media (max-width: 480px) {
    .logo img { height: 52px; }
    header { padding: 8px 0; }
    nav a { margin: 0 4px; font-size: 13px; padding: 5px 8px; }
    .page-hero { padding: 110px 16px 30px; }
    .page-hero h1 { font-size: 28px; }
    .page-hero p { font-size: 15px; }
    .cta { padding: 48px 0; }
    .cta h2 { font-size: 24px; }
}