/* ============================================
   MAC FENG — Aftermarket Parts Site
   Industrial / Deep Navy + Industrial Yellow
   ============================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', -apple-system, 'Segoe UI', 'Arial', sans-serif;
    background: #0a192f;
    color: #e6edf3;
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

/* ===== Layout ===== */
.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
section { padding: 80px 0; }
img { max-width: 100%; display: block; }
a { color: #f7b731; text-decoration: none; transition: color 0.2s; }
a:hover { color: #ffd061; }

/* ===== Top Nav ===== */
.nav {
    position: sticky; top: 0; z-index: 100;
    background: rgba(10, 25, 47, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(247, 183, 49, 0.15);
}
.nav-inner {
    max-width: 1180px; margin: 0 auto; padding: 18px 28px;
    display: flex; justify-content: space-between; align-items: center;
}
.brand {
    font-size: 19px; font-weight: 800; color: #ffffff;
    letter-spacing: -0.3px; text-transform: uppercase;
}
.brand span { color: #f7b731; }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a {
    color: #9fb3c8; font-weight: 500; font-size: 15px;
    text-transform: uppercase; letter-spacing: 0.5px;
}
.nav-links a:hover, .nav-links a.active { color: #f7b731; }

/* ===== Hero ===== */
.hero {
    background: linear-gradient(160deg, #0a192f 0%, #112240 100%);
    padding: 100px 0 90px;
    border-bottom: 4px solid #f7b731;
}
.eyebrow {
    color: #f7b731; font-size: 14px; font-weight: 700;
    letter-spacing: 2px; text-transform: uppercase; margin-bottom: 18px;
}
.hero h1 {
    font-size: 56px; font-weight: 900; line-height: 1.05;
    color: #ffffff; text-transform: uppercase; letter-spacing: -1.5px;
    max-width: 900px; margin-bottom: 24px;
}
.hero h1 span.accent { color: #f7b731; }
.hero .lede {
    font-size: 19px; color: #9fb3c8; max-width: 720px;
    margin-bottom: 36px; line-height: 1.6;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block; padding: 14px 28px;
    border-radius: 4px; font-weight: 700; font-size: 15px;
    letter-spacing: 0.5px; text-transform: uppercase;
    transition: all 0.2s ease; cursor: pointer; border: none;
}
.btn-primary { background: #f7b731; color: #0a192f; }
.btn-primary:hover { background: #ffd061; color: #0a192f; transform: translateY(-1px); }
.btn-secondary {
    background: transparent; color: #f7b731;
    border: 2px solid #f7b731;
}
.btn-secondary:hover { background: #f7b731; color: #0a192f; }
.btn-row { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== Section Headers ===== */
.section-eyebrow {
    color: #f7b731; font-size: 13px; font-weight: 700;
    letter-spacing: 2px; text-transform: uppercase; margin-bottom: 14px;
}
.section-title {
    font-size: 38px; font-weight: 800; color: #ffffff;
    margin-bottom: 18px; letter-spacing: -0.5px;
}
.section-lede {
    font-size: 17px; color: #9fb3c8; max-width: 700px;
    margin-bottom: 50px; line-height: 1.6;
}

/* ===== Card Grid ===== */
.grid-3 {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.grid-2 {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px;
}
.card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(247, 183, 49, 0.18);
    border-radius: 8px; padding: 32px 28px;
    transition: border-color 0.2s, transform 0.2s;
}
.card:hover {
    border-color: rgba(247, 183, 49, 0.45);
    transform: translateY(-2px);
}
.card-icon {
    width: 48px; height: 48px; background: #f7b731; color: #0a192f;
    border-radius: 6px; display: flex; align-items: center; justify-content: center;
    font-size: 22px; font-weight: 900; margin-bottom: 18px;
}
.card h3 {
    font-size: 19px; font-weight: 800; color: #ffffff;
    margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.3px;
}
.card p { font-size: 15px; color: #9fb3c8; line-height: 1.6; }

/* ===== Stripe / Hook Band ===== */
.stripe {
    background: #f7b731; color: #0a192f;
    padding: 50px 0; text-align: center;
}
.stripe h2 {
    font-size: 32px; font-weight: 900; letter-spacing: -0.5px;
    text-transform: uppercase; line-height: 1.2;
}
.stripe p { font-size: 17px; margin-top: 12px; font-weight: 600; }

/* ===== Capabilities List ===== */
.cap-item {
    display: flex; gap: 24px; padding: 28px;
    background: rgba(255, 255, 255, 0.03);
    border-left: 4px solid #f7b731;
    border-radius: 0 6px 6px 0;
    margin-bottom: 18px;
}
.cap-item h3 {
    font-size: 21px; color: #ffffff; margin-bottom: 8px;
    text-transform: uppercase; letter-spacing: 0.3px;
}
.cap-item .oem-tag {
    display: inline-block; background: rgba(247, 183, 49, 0.15);
    color: #f7b731; padding: 3px 10px; border-radius: 3px;
    font-size: 12px; font-weight: 700; letter-spacing: 0.5px;
    margin-bottom: 10px;
}
.cap-item p { color: #9fb3c8; }
.cap-num {
    flex: 0 0 60px; height: 60px; background: #f7b731; color: #0a192f;
    border-radius: 6px; display: flex; align-items: center; justify-content: center;
    font-size: 22px; font-weight: 900;
}

/* ===== DWG Library Gallery ===== */
.dwg-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.dwg-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(247, 183, 49, 0.2);
    border-radius: 6px; overflow: hidden;
}
.dwg-card img {
    width: 100%; height: 200px; object-fit: cover; background: #fff;
}
.dwg-card-body { padding: 14px 16px; }
.dwg-card-body .pn {
    color: #f7b731; font-weight: 800; font-size: 13px; letter-spacing: 0.5px;
}
.dwg-card-body .desc { color: #cdd9e5; font-size: 14px; margin-top: 4px; }

/* ===== About / Bio ===== */
.bio {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(247, 183, 49, 0.18);
    border-radius: 8px; padding: 44px;
}
.bio p { font-size: 16px; color: #cdd9e5; margin-bottom: 18px; line-height: 1.75; }
.bio p:last-child { margin-bottom: 0; }
.bio strong { color: #f7b731; font-weight: 700; }

/* ===== Contact ===== */
.contact-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
    margin-bottom: 40px;
}
.contact-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(247, 183, 49, 0.2);
    border-radius: 8px; padding: 32px;
}
.contact-card .label {
    color: #f7b731; font-size: 12px; font-weight: 700;
    letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 10px;
}
.contact-card .value {
    color: #ffffff; font-size: 22px; font-weight: 700;
    word-break: break-all;
}
.catalog-box {
    background: linear-gradient(135deg, #f7b731 0%, #ffd061 100%);
    color: #0a192f; padding: 40px; border-radius: 8px;
    text-align: center;
}
.catalog-box h3 {
    font-size: 26px; font-weight: 900; text-transform: uppercase;
    letter-spacing: -0.5px; margin-bottom: 12px;
}
.catalog-box p { font-size: 16px; margin-bottom: 24px; font-weight: 600; }
.catalog-box form { display: flex; gap: 12px; max-width: 480px; margin: 0 auto; }
.catalog-box input {
    flex: 1; padding: 14px 18px; border: none; border-radius: 4px;
    font-size: 15px; font-family: inherit;
}
.catalog-box button {
    background: #0a192f; color: #f7b731; padding: 14px 24px;
    border: none; border-radius: 4px; font-weight: 700;
    font-size: 15px; cursor: pointer; text-transform: uppercase;
    letter-spacing: 0.5px;
}
.catalog-box button:hover { background: #112240; }

/* ===== Footer ===== */
.footer {
    background: #06101e; padding: 40px 0 30px;
    border-top: 1px solid rgba(247, 183, 49, 0.15);
}
.footer-inner {
    max-width: 1180px; margin: 0 auto; padding: 0 28px;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 20px;
}
.footer p { color: #5b7185; font-size: 14px; }
.footer .footer-links { display: flex; gap: 24px; list-style: none; }
.footer .footer-links a {
    color: #9fb3c8; font-size: 14px; font-weight: 500;
    text-transform: uppercase; letter-spacing: 0.5px;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .hero h1 { font-size: 38px; }
    .section-title { font-size: 28px; }
    .grid-3, .grid-2, .dwg-grid, .contact-grid {
        grid-template-columns: 1fr;
    }
    .nav-links { gap: 16px; font-size: 13px; }
    .stripe h2 { font-size: 22px; }
    .bio { padding: 28px 20px; }
    .catalog-box form { flex-direction: column; }
    section { padding: 56px 0; }
}