/* ============================================
   Renier Johan Keller — Oil & Gas
   Dark premium theme: charcoal + gold
   ============================================ */

:root {
    --bg: #0c0f14;
    --bg-alt: #11161e;
    --surface: #171d27;
    --surface-hover: #1d2532;
    --border: #26303e;
    --gold: #d4a542;
    --gold-bright: #e8bd5c;
    --text: #e8eaf0;
    --text-muted: #9aa3b2;
    --font: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: min(1100px, 92%);
    margin: 0 auto;
}

/* ---------- Navigation ---------- */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(12, 15, 20, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--gold);
    text-decoration: none;
}

.brand span {
    display: block;
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 4px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--gold-bright);
}

.nav-cta {
    border: 1px solid var(--gold);
    padding: 0.5rem 1.25rem;
    border-radius: 4px;
    color: var(--gold) !important;
    transition: background 0.2s ease, color 0.2s ease;
}

.nav-cta:hover {
    background: var(--gold);
    color: var(--bg) !important;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: 6px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
    padding: 5.5rem 0 6rem;
    background:
        radial-gradient(ellipse 60% 50% at 80% 10%, rgba(212, 165, 66, 0.09), transparent),
        linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
    border-bottom: 1px solid var(--border);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    align-items: center;
    gap: 3.5rem;
}

.hero-kicker {
    text-transform: uppercase;
    letter-spacing: 4px;
    font-size: 0.8rem;
    color: var(--gold);
    margin-bottom: 1rem;
}

.hero h1 {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.25rem;
}

.hero h1 .gold {
    color: var(--gold);
}

.hero-sub {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 34rem;
    margin-bottom: 2.25rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-photo {
    display: flex;
    justify-content: center;
}

.photo-frame {
    position: relative;
    width: min(340px, 80%);
    aspect-ratio: 4 / 5;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
}

.photo-frame::after {
    content: "";
    position: absolute;
    inset: 0;
    border: 1px solid rgba(212, 165, 66, 0.35);
    border-radius: 8px;
    transform: translate(12px, 12px);
    pointer-events: none;
}

.photo-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-block;
    padding: 0.85rem 1.9rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn-gold {
    background: var(--gold);
    color: #14100a;
}

.btn-gold:hover {
    background: var(--gold-bright);
    transform: translateY(-2px);
}

.btn-outline {
    border-color: var(--border);
    color: var(--text);
}

.btn-outline:hover {
    border-color: var(--gold);
    color: var(--gold-bright);
}

.btn-full {
    width: 100%;
}

/* ---------- Sections ---------- */
.section {
    padding: 5.5rem 0;
}

.section-alt {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-kicker {
    text-transform: uppercase;
    letter-spacing: 4px;
    font-size: 0.78rem;
    color: var(--gold);
    margin-bottom: 0.6rem;
}

.section-title {
    font-size: clamp(1.7rem, 3.5vw, 2.3rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-sub {
    color: var(--text-muted);
    max-width: 42rem;
    margin-bottom: 2.5rem;
}

.section-title + .section-sub {
    margin-top: -0.25rem;
}

/* ---------- About ---------- */
.about-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 3rem;
    align-items: start;
    margin-top: 2rem;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 1.1rem;
}

.about-stats {
    display: grid;
    gap: 1rem;
}

.stat {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.4rem 1.5rem;
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 1.9rem;
    font-weight: 800;
    color: var(--gold);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

/* ---------- Cards ---------- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem 1.6rem;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(212, 165, 66, 0.5);
    background: var(--surface-hover);
}

.card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.6rem;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.card-icon {
    font-size: 1.7rem;
    margin-bottom: 1rem;
    color: var(--gold);
}

/* ---------- Products ---------- */
.products-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.product-card {
    border-top: 3px solid var(--gold);
}

.product-icon {
    font-size: 2rem;
    margin-bottom: 0.8rem;
}

.product-specs {
    list-style: none;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--border);
}

.product-specs li {
    font-size: 0.83rem;
    color: var(--text-muted);
    padding: 0.15rem 0;
}

.product-specs li::before {
    content: "▸";
    color: var(--gold);
    margin-right: 0.5rem;
}

.products-note {
    margin-top: 2.2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-style: italic;
}

/* ---------- Contact ---------- */
.contact-container {
    max-width: 760px;
}

.contact-form {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2.5rem;
    margin-top: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 0.45rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-family: var(--font);
    font-size: 0.95rem;
    padding: 0.75rem 0.9rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gold);
}

.form-group textarea {
    resize: vertical;
}

.honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    overflow: hidden;
}

.alert {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    border-radius: 6px;
    font-size: 0.95rem;
}

.alert-success {
    background: rgba(46, 160, 90, 0.12);
    border: 1px solid rgba(46, 160, 90, 0.45);
    color: #7fd8a2;
}

.alert-error {
    background: rgba(220, 70, 70, 0.12);
    border: 1px solid rgba(220, 70, 70, 0.45);
    color: #f09898;
}

/* ---------- Footer ---------- */
.footer {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    padding: 2.5rem 0;
    text-align: center;
}

.footer-brand {
    font-weight: 800;
    letter-spacing: 1px;
    font-size: 1.05rem;
}

.footer-tag {
    color: var(--gold);
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin: 0.35rem 0 1rem;
}

.footer-copy {
    color: var(--text-muted);
    font-size: 0.82rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }

    .hero-sub {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-alt);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 0.5rem 4%;
        display: none;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 0.9rem 0;
    }

    .nav-cta {
        border: none;
        padding: 0.9rem 0;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 1.5rem;
    }
}