/* ==========================================================================
   MELEX LOGISTICS LIMITED — Styles
   Colour palette: industrial blue + logistics amber
   ========================================================================== */

:root {
    --primary:   #1a2a4a;   /* deep slate blue — trust, professionalism */
    --accent:    #d97706;   /* amber — movement, energy, logistics */
    --bg:        #f4f6f9;   /* light page background */
    --surface:   #ffffff;   /* card / section surfaces */
    --text-dark:#1f2933;   /* primary copy */
    --text-light:#647489;  /* secondary copy */
    --border:    #d1d9e6;  /* subtle borders */
    --nav-shadow: rgba(26, 42, 74, 0.08);
    --radius:    6px;
    --transition: 0.25s ease;
}

/* Reset & base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg);
}

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

.container {
    width: min(90%, 1180px);
    margin-inline: auto;
    padding-block: 2rem;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.015em;
}

h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.25rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; font-weight: 600; }

p { margin-bottom: 1rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}
.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
}
.btn-primary:hover {
    background-color: #c26500;
    border-color: #c26500;
    transform: translateY(-1px);
}
.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover {
    background-color: var(--primary);
    color: #ffffff;
}

/* Navbar */
.navbar {
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 3px var(--nav-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
}
.nav-logo-accent { color: var(--accent); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.925rem;
    transition: var(--transition);
    position: relative;
}
.nav-link:hover { color: var(--accent); }
.nav-link.active {
    color: var(--accent);
}
.nav-link.active::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent);
}
.nav-cta { margin-left: 0.5rem; }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.75rem;
    color: var(--primary);
    cursor: pointer;
}

/* Hero */
.hero {
    background: linear-gradient(rgba(26, 42, 74, 0.82), rgba(26, 42, 74, 0.88)),
                url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cpath d='M10 50 L30 30 L50 50 L70 30 L90 50 L70 70 L50 50 L30 70 Z' fill='%23d97706' fill-opacity='0.08' stroke='none'/%3E%3C/svg%3E");
    background-size: 220px;
    color: #ffffff;
    text-align: center;
    padding-block: 5rem 3.5rem;
}
.hero h1 { color: #ffffff; margin-bottom: 1rem; }
.hero-sublead {
    max-width: 680px;
    margin: 0 auto 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
    color: #e2e8f0;
}
.hero-ctas {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Value Props */
.value-props {
    background-color: var(--surface);
    padding-block: 3.5rem 2.5rem;
}
.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
}
.value-item { text-align: center; }
.value-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

/* Services */
.services {
    background-color: var(--bg);
    padding-block: 4rem 2.5rem;
}
.section-title {
    text-align: center;
    margin-bottom: 0.75rem;
    color: var(--primary);
}
.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-inline: auto;
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}
.service-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
}
.service-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px var(--nav-shadow);
}
.service-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    color: var(--accent);
}

/* About Strip */
.about-strip {
    background-color: var(--surface);
    padding-block: 4rem 2.5rem;
}
.about-flex {
    max-width: 800px;
    margin-inline: auto;
    text-align: center;
}
.about-strip h2 { color: var(--primary); margin-bottom: 1rem; }

/* Credentials */
.credentials {
    background-color: var(--primary);
    color: #cbd6e4;
    padding-block: 1.25rem;
}
.creds-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    text-align: centre;
    font-size: 0.9rem;
}
.cred-item { color: #cbd6e4; }
.cred-item strong { color: #ffffff; }
.cred-divider {
    display: none;
}

/* CTA Band */
.cta-band {
    background: linear-gradient(var(--accent), #b4651a);
    color: #ffffff;
    text-align: center;
    padding-block: 4rem 3rem;
}
.cta-band h2 { color: #ffffff; margin-bottom: 0.75rem; }

/* Footer */
.footer {
    background-color: var(--primary);
    color: #cbd6e4;
    font-size: 0.875rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2.5rem;
    padding-block: 3rem 2rem;
}
.footer-col h4 {
    color: #ffffff;
    margin-bottom: 1rem;
    font-size: 1rem;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.footer-links a {
    color: #cbd6e4;
    transition: var(--transition);
}
.footer-links a:hover {
    color: var(--accent);
}
.footer-blurb {
    font-size: 0.9rem;
    line-height: 1.6;
}
.footer-reg {
    font-size: 0.85rem;
    line-height: 1.6;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-block: 1rem;
    text-align: centre;
    color: #94a3b8;
    font-size: 0.825rem;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .container { padding-block: 1.5rem; }

    .nav-links {
        position: absolute;
        top: 100%;
        right: 0;
        background-color: var(--surface);
        flex-direction: column;
        gap: 0;
        width: 250px;
        padding: 1rem;
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: 0 8px 24px var(--nav-shadow);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .nav-link,
    .nav-cta {
        padding: 0.6rem 0.5rem;
        border-bottom: 1px solid var(--border);
        width: 100%;
        text-align: left;
    }
    .nav-link.active::after { display: none; }
    .nav-toggle { display: block; }

    .hero { padding-block: 4rem 2.5rem; }
    .hero h1 { font-size: 1.75rem; }

    .hero-ctas {
        flex-direction: column;
        gap: 0.75rem;
    }

    .services-grid,
    .value-grid {
        grid-template-columns: 1fr;
    }

    .creds-inner {
        flex-direction: column;
        gap: 0.5rem;
    }
    .cred-divider { display: none; }
}