/* ── Custom Properties ── */
:root {
    --bg:         #0A1628;
    --surface:    #0F2040;
    --surface-2:  #162952;
    --accent:     #00C2FF;
    --accent-dim: rgba(0, 194, 255, 0.12);
    --text:       #E8EDF5;
    --muted:      #7A8EA8;
    --border:     rgba(255, 255, 255, 0.08);
    --nav-h:      72px;
    --radius:     12px;
    --max-w:      1180px;
    --pad-x:      24px;
    --section-y:  100px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; }

/* ── Typography ── */
h1 { font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 800; line-height: 1.15; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.4rem); font-weight: 700; line-height: 1.2; }
h3 { font-size: 1.2rem; font-weight: 700; }
h4 { font-size: 1rem; font-weight: 700; }
p  { color: var(--muted); line-height: 1.7; }
.lead { font-size: 1.1rem; color: var(--text); margin-bottom: 20px; }

/* ── Shared Container ── */
.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--pad-x);
}

/* ── Section Header ── */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}
.section-header h2 { margin-bottom: 14px; }
.section-header p   { max-width: 540px; margin: 0 auto; font-size: 1.05rem; }

/* ── Buttons ── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--accent);
    color: #081220;
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: opacity 0.18s, transform 0.18s;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }

.btn-ghost {
    display: inline-flex;
    align-items: center;
    padding: 14px 28px;
    background: transparent;
    color: var(--text);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 8px;
    border: 1.5px solid var(--border);
    cursor: pointer;
    transition: border-color 0.18s, background 0.18s;
}
.btn-ghost:hover { border-color: var(--accent); background: var(--accent-dim); }

/* ── Navbar ── */
#navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    z-index: 100;
    transition: background 0.3s, backdrop-filter 0.3s, box-shadow 0.3s;
}
#navbar.scrolled {
    background: rgba(10, 22, 40, 0.94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 1px 0 var(--border);
}
.nav-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--pad-x);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-brand img  { height: 48px; }
.nav-links      { display: flex; align-items: center; gap: 32px; }
.nav-link       { font-size: 0.9rem; font-weight: 500; color: var(--muted); transition: color 0.18s; }
.nav-link:hover { color: var(--text); }
.btn-nav {
    padding: 9px 20px;
    background: var(--accent);
    color: #081220;
    font-weight: 700;
    font-size: 0.85rem;
    border-radius: 7px;
    transition: opacity 0.18s;
}
.btn-nav:hover { opacity: 0.85; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ── */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    gap: 48px;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: var(--nav-h) var(--pad-x) 60px;
}
.hero-eyebrow {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
}
.hero-text         { flex: 0 0 52%; }
.hero-text h1      { color: var(--text); margin-bottom: 22px; }
.hero-text p       { font-size: 1.05rem; max-width: 500px; margin-bottom: 36px; }
.hero-actions      { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-image img {
    width: 100%;
    max-width: 700px;
    opacity: 1;
}

/* ── Services ── */
#services {
    padding: var(--section-y) 0;
    background: var(--surface);
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.service-card {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: border-color 0.25s, transform 0.25s;
}
.service-card:hover {
    border-color: rgba(0, 194, 255, 0.35);
    transform: translateY(-4px);
}
.service-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-dim);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 22px;
    color: var(--accent);
}
.service-icon svg { width: 24px; height: 24px; }
.service-card h3  { margin-bottom: 12px; color: var(--text); }
.service-card p   { font-size: 0.92rem; line-height: 1.65; }

/* ── About ── */
#about {
    padding: var(--section-y) 0;
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 80px;
    align-items: center;
}
.about-content h2    { margin-bottom: 24px; }
.about-content p     { margin-bottom: 18px; font-size: 0.95rem; }
.about-content p:last-child { margin-bottom: 0; }
.about-logo-block {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 48px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}
.about-logo-block img { width: 180px; }
.about-location {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--muted);
    font-weight: 500;
}
.about-location svg { width: 14px; height: 14px; color: var(--accent); flex-shrink: 0; }

/* ── Why Flex ── */
#why-flex {
    padding: var(--section-y) 0;
    background: var(--surface);
}
.trust-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.trust-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    transition: border-color 0.25s;
}
.trust-card:hover { border-color: rgba(0, 194, 255, 0.3); }
.trust-icon {
    width: 40px;
    height: 40px;
    color: var(--accent);
    margin-bottom: 16px;
}
.trust-icon svg { width: 100%; height: 100%; }
.trust-card h4   { margin-bottom: 8px; color: var(--text); }
.trust-card p    { font-size: 0.875rem; line-height: 1.6; }

/* ── Contact ── */
#contact {
    padding: var(--section-y) 0;
}
.contact-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 60px;
    align-items: start;
}
.contact-details { display: flex; flex-direction: column; gap: 28px; }
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}
.contact-item svg       { width: 20px; height: 20px; flex-shrink: 0; color: var(--accent); margin-top: 2px; }
.contact-item div       { display: flex; flex-direction: column; gap: 4px; }
.contact-label          { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.contact-item a         { font-size: 0.95rem; color: var(--text); transition: color 0.18s; }
.contact-item a:hover   { color: var(--accent); }
.contact-item span:last-child { font-size: 0.95rem; color: var(--text); }

/* Contact Form */
.contact-form {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.form-group input,
.form-group textarea {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 14px;
    color: var(--text);
    font-size: 0.925rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.18s;
    resize: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--muted); opacity: 0.7; }
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); }
.contact-form .btn-primary { align-self: flex-start; }
.form-status { font-size: 0.875rem; min-height: 1.2em; }
.form-status.success { color: #4ade80; }
.form-status.error   { color: #f87171; }

/* ── Footer ── */
footer {
    border-top: 1px solid var(--border);
    padding: 40px 0;
}
.footer-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--pad-x);
    display: flex;
    align-items: center;
    gap: 28px;
}
.footer-logo { height: 28px; opacity: 0.7; }
.footer-meta { display: flex; flex-direction: column; gap: 4px; }
.footer-meta p { font-size: 0.8rem; color: var(--muted); }

/* ── Scroll Animations ── */
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: none;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    :root { --section-y: 80px; }
    .services-grid   { grid-template-columns: 1fr 1fr; }
    .about-grid      { grid-template-columns: 1fr; gap: 48px; }
    .about-logo-block { flex-direction: row; justify-content: flex-start; padding: 32px; }
    .contact-grid    { grid-template-columns: 1fr; gap: 40px; }
    .contact-details { flex-direction: row; flex-wrap: wrap; }
}

@media (max-width: 768px) {
    :root { --section-y: 60px; }

    /* Nav */
    .nav-toggle { display: flex; }
    .nav-links {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        position: absolute;
        top: var(--nav-h);
        left: 0; right: 0;
        background: rgba(10, 22, 40, 0.98);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-top: 1px solid var(--border);
        padding: 16px 0 24px;
    }
    .nav-links.open { display: flex; }
    .nav-links li { width: 100%; }
    .nav-link, .btn-nav {
        display: block;
        padding: 14px 24px;
        width: 100%;
        border-radius: 0;
        background: none;
        color: var(--text);
        font-size: 1rem;
    }
    .btn-nav { color: var(--accent); font-weight: 700; }

    /* Hero */
    #hero {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        padding-bottom: 48px;
        gap: 32px;
    }
    .hero-text { flex: none; }
    .hero-text p { margin: 0 auto 36px; }
    .hero-actions { justify-content: center; }
    .hero-image { width: 100%; }
    .hero-image img { max-width: 340px; margin: 0 auto; }

    /* Grids */
    .services-grid { grid-template-columns: 1fr; }
    .trust-grid    { grid-template-columns: 1fr 1fr; }
    .form-row      { grid-template-columns: 1fr; }

    /* About logo block */
    .about-logo-block { flex-direction: column; align-items: center; }

    /* Contact */
    .contact-details { flex-direction: column; }
    .contact-form    { padding: 24px; }

    /* Footer */
    .footer-inner { flex-direction: column; align-items: center; text-align: center; gap: 16px; }
}

@media (max-width: 480px) {
    .trust-grid { grid-template-columns: 1fr; }
}