/* ============================================================
   PLUS AERO — MASTER STYLESHEET
   Single file. Replaces all previous CSS files.
   ============================================================ */

:root {
    --orange: #FF6600;
    --black: #000000;
    --dark: #080808;
    --mid: #111111;
    --border: #222222;
    --text-dim: #888888;
    --white: #ffffff;
}

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

body {
    background-color: var(--black);
    color: var(--white);
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    overflow-x: hidden;
}

/* ============================================================
   MASTER NAV
   ============================================================ */

header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 70px;
    background: rgba(0,0,0,0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5%;
    box-sizing: border-box;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 22px;
    font-weight: 900;
    color: var(--white);
    text-decoration: none;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.logo span { color: var(--orange); }

nav a {
    color: var(--white);
    text-decoration: none;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-left: 24px;
    transition: color 0.2s;
}

nav a:hover { color: var(--orange); }

/* HAMBURGER */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: 0.3s;
}

/* MOBILE NAV OVERLAY */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--black);
    z-index: 10000;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 30px;
}

.mobile-nav.active { display: flex; }

.mobile-nav a {
    color: var(--white);
    font-size: 28px;
    font-weight: 900;
    text-transform: uppercase;
    text-decoration: none;
    letter-spacing: 3px;
    transition: color 0.2s;
}

.mobile-nav a:hover { color: var(--orange); }

.close-btn {
    position: absolute;
    top: 20px;
    right: 5%;
    font-size: 40px;
    cursor: pointer;
    color: var(--white);
    line-height: 1;
}

/* ============================================================
   HERO SECTIONS
   ============================================================ */

.page-hero {
    height: 70vh;
    width: 100%;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 70px;
    position: relative;
}

.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.6));
}

.hero-text {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-text h1 {
    font-size: clamp(40px, 8vw, 90px);
    font-weight: 900;
    letter-spacing: 12px;
    text-transform: uppercase;
    color: var(--white);
    text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.hero-text p {
    font-size: 13px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: #ccc;
    margin-top: 12px;
}

/* INDEX HERO */
.index-hero {
    height: 100vh;
    width: 100%;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-left: 7%;
    margin-top: 70px;
    position: relative;
}

.index-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.8) 40%, rgba(0,0,0,0.1));
}

.index-hero-content {
    position: relative;
    z-index: 2;
}

.index-hero-content p {
    font-size: 12px;
    letter-spacing: 5px;
    text-transform: uppercase;
    color: var(--orange);
    margin-bottom: 20px;
}

.index-hero-content h1 {
    font-size: clamp(48px, 8vw, 100px);
    font-weight: 900;
    line-height: 1;
    text-transform: uppercase;
}

.index-hero-content h1 span { color: var(--orange); }

/* ============================================================
   TECH BAR
   ============================================================ */

.tech-bar {
    background: var(--orange);
    display: flex;
    justify-content: space-around;
    padding: 25px 5%;
    flex-wrap: wrap;
    gap: 20px;
}

.tech-item { text-align: center; }

.tech-item h4 {
    font-size: 24px;
    font-weight: 900;
    color: var(--white);
    letter-spacing: 2px;
}

.tech-item p {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: rgba(255,255,255,0.8);
    margin-top: 4px;
}

/* ============================================================
   INDEX CATEGORY GRID
   ============================================================ */

.grid-section {
    display: flex;
    flex-wrap: wrap;
}

.cat-card {
    width: 50%;
    height:500px;
    position: relative;
    display: flex;
    align-items: flex-end;
    padding: 40px;
    background-size: cover;
    background-position: center;
    background-color: var(--mid);
    text-decoration: none;
    overflow: hidden;
    transition: 0.4s;
}

.cat-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.85) 30%, rgba(0,0,0,0.1));
    transition: 0.4s;
}

.cat-card:hover::after {
    background: linear-gradient(to top, rgba(255,102,0,0.7) 0%, rgba(0,0,0,0.3));
}

.cat-content {
    position: relative;
    z-index: 2;
}

.cat-content p {
    font-size: 11px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--orange);
    font-weight: 700;
    margin-bottom: 8px;
}

.cat-content h2 {
    font-size: 42px;
    font-weight: 900;
    color: var(--white);
    text-transform: uppercase;
    line-height: 1;
}

/* ============================================================
   PRODUCT CARDS (ROAD / GRAVEL / MTB)
   ============================================================ */

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2px;
    padding: 2px;
    background: var(--border);
}

.product-card {
    background: var(--dark);
    position: relative;
    overflow: hidden;
    transition: 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.product-card:hover { transform: translateY(-6px); }

.card-img {
    width: 100%;
    height: 500px;
    background-color: var(--mid);
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s;
}

.product-card:hover .card-img img { transform: scale(1.06); }

/* Orange fade overlay on card image */
.card-img::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(transparent, rgba(255,102,0,0.15));
    pointer-events: none;
}

.card-info { padding: 2px; }

.card-info h3 {
    font-size: 22px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--white);
    margin-bottom: 8px;
    border-left: 4px solid var(--orange);
    padding-left: 12px;
}

.card-specs {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-dim);
    line-height: 2;
    margin-bottom: 2px;
}

.card-specs b { color: var(--orange); }

/* PRICE CALCULATOR */
.price-calc {
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.base-price {
    font-size: 30px;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 16px;
}

.base-price span {
    font-size: 13px;
    color: var(--text-dim);
    font-weight: 400;
    margin-left: 8px;
}

.upgrade-options { margin-bottom: 16px; }

.upgrade-option {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    cursor: pointer;
}

.upgrade-option input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--orange);
    cursor: pointer;
}

.upgrade-option label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #aaa;
    cursor: pointer;
    flex: 1;
}

.upgrade-option .upgrade-price {
    font-size: 12px;
    font-weight: 700;
    color: var(--orange);
}

.total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border);
    padding-top: 16px;
    margin-top: 8px;
}

.total-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-dim);
}

.total-price {
    font-size: 26px;
    font-weight: 900;
    color: var(--orange);
}

.btn-order {
    display: block;
    width: 100%;
    background: var(--orange);
    color: var(--white);
    text-align: center;
    padding: 14px;
    font-size: 11px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-decoration: none;
    margin-top: 16px;
    transition: background 0.2s;
}

.btn-order:hover { background: var(--white); color: var(--black); }

/* ============================================================
   NARRATIVE / INFO BLOCKS
   ============================================================ */

.narrative {
    display: flex;
    flex-wrap: wrap;
    padding: 80px 5%;
    gap: 40px;
    background: var(--dark);
    border-top: 1px solid var(--border);
}

.n-block { flex: 1; min-width: 220px; }

.n-block h3 {
    font-size: 14px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--orange);
    margin-bottom: 16px;
}

.n-block p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-dim);
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn-orange {
    display: inline-block;
    background: var(--orange);
    color: var(--white);
    padding: 14px 28px;
    font-size: 11px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-decoration: none;
    transition: 0.2s;
}

.btn-orange:hover { background: var(--white); color: var(--black); }

.basement-cta {
    text-align: center;
    padding: 60px 5%;
    background: var(--black);
}

/* ============================================================
   FOOTER
   ============================================================ */

footer {
    background: var(--dark);
    border-top: 1px solid var(--border);
    padding: 40px 5%;
    text-align: center;
}

.footer-logo {
    font-size: 20px;
    font-weight: 900;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 12px;
}

footer p {
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 1px;
}

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

@media (max-width: 768px) {
    nav { display: none; }
    .hamburger { display: flex; }
    .cat-card { width: 100%; height: 320px; }
    .page-hero { height: 50vh; }
    .index-hero { height: 80vh; }
    .product-grid { grid-template-columns: 1fr; }
    .tech-bar { justify-content: center; }
    .hero-text h1 { letter-spacing: 6px; }
}