/* ==========================================================================
   NexGen Technology Systems — Marketing site
   ========================================================================== */

:root {
    --c-primary: #3b82f6;
    --c-primary-50: #eff6ff;
    --c-primary-600: #2563eb;
    --bg-sidebar: #1e3a5f;
    --bg-sidebar-2: #112240;
    --bg-page: #ffffff;
    --bg-surface-2: #f8fafc;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-hint: #94a3b8;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-panel: 0 8px 32px rgba(0,0,0,.14);
    --radius: 18px;
    --header-h: 76px;
    --transition: .25s ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: 'Cairo', 'Segoe UI', Tahoma, sans-serif;
    color: var(--text-main);
    background: var(--bg-page);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }

.container {
    width: 100%;
    max-width: 1180px;
    margin-inline: auto;
    padding-inline: 24px;
}

section[id] { scroll-margin-top: var(--header-h); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 14.5px;
    border: 1px solid transparent;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
    white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-600));
    color: #fff;
    box-shadow: 0 8px 20px -8px rgba(59,130,246,.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px -8px rgba(59,130,246,.7); }
.btn-ghost {
    background: rgba(255,255,255,.08);
    color: #fff;
    border-color: rgba(255,255,255,.35);
}
.btn-ghost:hover { background: rgba(255,255,255,.16); transform: translateY(-2px); }
.btn-lg { padding: 13px 26px; font-size: 15.5px; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
    position: fixed;
    inset-inline: 0;
    top: 0;
    z-index: 1000;
    height: var(--header-h);
    display: flex;
    align-items: center;
    background: rgba(255,255,255,.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.site-header.scrolled {
    background: rgba(255,255,255,.92);
    border-color: var(--border);
    box-shadow: 0 4px 20px rgba(15,23,42,.06);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.brand { display: flex; align-items: center; }
.brand img { height: 42px; width: auto; border-radius: 8px; }

.main-nav ul { display: flex; align-items: center; gap: 6px; }
.main-nav a {
    display: inline-block;
    padding: 9px 14px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 14.5px;
    color: var(--text-main);
    transition: background var(--transition), color var(--transition);
}
.main-nav a:hover, .main-nav a.active { background: var(--c-primary-50); color: var(--c-primary); }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    align-items: center;
}
.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.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 {
    position: relative;
    overflow: hidden;
    padding: calc(var(--header-h) + 70px) 0 70px;
    text-align: center;
    background: linear-gradient(165deg, var(--bg-sidebar) 0%, var(--bg-sidebar-2) 100%);
    color: #fff;
}
.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    background: var(--c-primary);
    opacity: .35;
    pointer-events: none;
}
.hero-orb.o1 { width: 380px; height: 380px; top: -140px; inset-inline-start: -100px; }
.hero-orb.o2 { width: 320px; height: 320px; bottom: -160px; inset-inline-end: -100px; opacity: .25; }

.hero-content { position: relative; z-index: 1; }
.kicker {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 800;
    color: rgba(255,255,255,.9);
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.16);
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 20px;
}
.hero-title {
    font-weight: 900;
    font-size: clamp(28px, 4.2vw, 44px);
    margin: 0 0 18px;
    line-height: 1.35;
}
.hero-title span { color: #7dd3fc; }
.hero-sub {
    color: rgba(255,255,255,.75);
    font-size: 17px;
    max-width: 620px;
    margin: 0 auto 30px;
}
.hero-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.hero-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    max-width: 920px;
    margin-inline: auto;
}
.highlight-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.14);
    border-radius: 14px;
    padding: 14px 16px;
    text-align: right;
    backdrop-filter: blur(4px);
}
.highlight-item h6 { margin: 0 0 2px; font-size: 13.5px; font-weight: 800; color: #fff; }
.highlight-item span { font-size: 12px; color: rgba(255,255,255,.65); }

.icon-chip {
    flex: 0 0 auto;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--c-primary-50);
    color: var(--c-primary);
    font-size: 1.05rem;
    transition: background var(--transition), color var(--transition);
}
.highlight-item .icon-chip { background: rgba(255,255,255,.14); color: #fff; }

/* ---------- Sections ---------- */
.section { padding: 80px 0; }
.section.alt-bg { background: var(--bg-surface-2); }

.section-head { text-align: center; max-width: 640px; margin: 0 auto 46px; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .3px;
    color: var(--c-primary);
    margin-bottom: 10px;
}
.eyebrow::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--c-primary);
}
.section-title {
    font-weight: 800;
    font-size: clamp(22px, 3vw, 30px);
    margin: 0 0 10px;
    color: var(--text-main);
}
.section-sub { color: var(--text-muted); font-size: 15.5px; margin: 0; }

/* ---------- About ---------- */
.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 46px;
    align-items: center;
}
.about-text p {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.95;
    margin-bottom: 16px;
}
.about-text p strong { color: var(--text-main); }
.about-visual { display: flex; justify-content: center; }
.about-logo-card {
    background: linear-gradient(165deg, var(--bg-sidebar), var(--bg-sidebar-2));
    border-radius: 24px;
    padding: 46px;
    box-shadow: var(--shadow-panel);
    width: 100%;
    max-width: 340px;
}
.about-logo-card img { border-radius: 12px; }

/* ---------- Services ---------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
}
.service-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px 22px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 30px -12px rgba(15,23,42,.16);
    border-color: var(--c-primary);
}
.service-card .icon-chip { width: 48px; height: 48px; font-size: 1.2rem; margin-bottom: 14px; }
.service-card:hover .icon-chip { background: var(--c-primary); color: #fff; }
.service-card h6 { font-weight: 800; font-size: 15.5px; margin: 0 0 8px; }
.service-card p { font-size: 14px; color: var(--text-muted); margin: 0; line-height: 1.85; }

/* ---------- Portfolio ---------- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
    margin-bottom: 20px;
}
.product-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
}
.product-card::before {
    content: "";
    position: absolute;
    inset-inline: 0;
    top: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--c-primary), var(--c-primary-600));
}
.product-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px -12px rgba(15,23,42,.2); }
.product-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.product-card .icon-chip { width: 48px; height: 48px; font-size: 1.2rem; }
.product-badge {
    font-size: 11.5px;
    font-weight: 800;
    color: #15803d;
    background: #dcfce7;
    padding: 5px 12px;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.product-card h6 { font-weight: 800; font-size: 16px; margin: 0 0 8px; }
.product-card p { font-size: 14px; color: var(--text-muted); line-height: 1.85; margin: 0; }

.custom-cta {
    display: flex;
    align-items: center;
    gap: 18px;
    background: linear-gradient(135deg, var(--c-primary-50), #fff);
    border: 1px dashed var(--c-primary);
    border-radius: 16px;
    padding: 22px 24px;
}
.custom-cta .icon-chip {
    width: 50px; height: 50px; border-radius: 50%;
    background: var(--c-primary); color: #fff; font-size: 1.2rem;
}
.custom-cta p { margin: 0; font-size: 15px; color: var(--text-main); line-height: 1.85; }
.custom-cta strong { color: var(--c-primary); }

/* ---------- Why us ---------- */
.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px;
}
.why-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 26px 22px;
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
}
.why-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px -12px rgba(15,23,42,.16); }
.why-card .icon-chip { margin: 0 auto 14px; width: 52px; height: 52px; font-size: 1.3rem; }
.why-card h6 { font-weight: 800; font-size: 15.5px; margin: 0 0 8px; }
.why-card p { font-size: 13.5px; color: var(--text-muted); margin: 0; line-height: 1.8; }

/* ---------- Contact ---------- */
.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-tile {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    background: linear-gradient(135deg, var(--c-primary-50), #fff);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px 22px;
}
.contact-label { font-size: 12.5px; font-weight: 700; color: var(--text-hint); display: block; margin-bottom: 4px; }
.contact-number { font-size: 19px; font-weight: 800; color: var(--text-main); direction: ltr; display: block; }
.contact-actions { display: flex; gap: 8px; flex-shrink: 0; }
.contact-actions a {
    width: 44px; height: 44px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 1.05rem;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 4px 12px -3px rgba(15,23,42,.25);
}
.contact-actions a:hover { transform: translateY(-3px); }
.contact-actions a.call { background: linear-gradient(135deg, var(--c-primary), var(--c-primary-600)); }
.contact-actions a.whatsapp { background: linear-gradient(135deg, #25d366, #128c7e); }

.contact-form {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 26px;
    box-shadow: var(--shadow-sm);
}
.contact-form h6 {
    display: flex; align-items: center; gap: 8px;
    font-weight: 800; font-size: 15.5px; margin: 0 0 18px; color: var(--text-main);
}
.contact-form h6 i { color: #25d366; }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; font-weight: 700; color: var(--text-muted); margin-bottom: 6px; }
.form-row input, .form-row textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 11px 14px;
    font-family: inherit;
    font-size: 14.5px;
    color: var(--text-main);
    background: var(--bg-surface-2);
    resize: vertical;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-row input:focus, .form-row textarea:focus {
    outline: none;
    border-color: var(--c-primary);
    box-shadow: 0 0 0 3px var(--c-primary-50);
    background: #fff;
}

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-sidebar-2); color: rgba(255,255,255,.8); }
.footer-inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 36px;
    padding: 54px 24px 40px;
}
.footer-brand img { height: 40px; width: auto; border-radius: 8px; margin-bottom: 14px; }
.footer-brand p { font-size: 13.5px; color: rgba(255,255,255,.55); max-width: 280px; line-height: 1.8; }
.footer-links h6, .footer-contact h6 {
    color: #fff; font-weight: 800; font-size: 14.5px; margin: 0 0 16px;
}
.footer-links a, .footer-contact a {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13.5px;
    color: rgba(255,255,255,.6);
    margin-bottom: 12px;
    transition: color var(--transition);
}
.footer-links a:hover, .footer-contact a:hover { color: #fff; }
.footer-contact a i { color: var(--c-primary); width: 16px; text-align: center; }
.ltr-num { direction: ltr; unicode-bidi: isolate; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 18px 0;
}
.footer-bottom p { margin: 0; font-size: 13px; color: rgba(255,255,255,.45); text-align: center; }

/* ---------- Floating buttons ---------- */
.float-whatsapp {
    position: fixed;
    bottom: 26px;
    inset-inline-start: 26px;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: linear-gradient(135deg, #25d366, #128c7e);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    box-shadow: 0 10px 26px -6px rgba(37,211,102,.6);
    z-index: 900;
    transition: transform var(--transition);
    animation: float-pulse 2.4s ease-in-out infinite;
}
.float-whatsapp:hover { transform: scale(1.08); }
@keyframes float-pulse {
    0%, 100% { box-shadow: 0 10px 26px -6px rgba(37,211,102,.6); }
    50% { box-shadow: 0 10px 32px -4px rgba(37,211,102,.9); }
}

.back-to-top {
    position: fixed;
    bottom: 26px;
    inset-inline-end: 26px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--bg-sidebar);
    color: #fff;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: 0 8px 20px -6px rgba(15,23,42,.4);
    z-index: 900;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .about-grid { grid-template-columns: 1fr; }
    .about-visual { order: -1; }
    .about-logo-card { max-width: 220px; padding: 30px; }
    .contact-wrap { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 780px) {
    .main-nav, .nav-cta { display: none; }
    .nav-toggle { display: flex; }

    .main-nav {
        position: fixed;
        top: var(--header-h);
        inset-inline: 0;
        background: #fff;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 12px 24px rgba(15,23,42,.08);
        display: block;
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    }
    .main-nav.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
    }
    .main-nav ul { flex-direction: column; align-items: stretch; padding: 14px; gap: 4px; }
    .main-nav a { display: block; padding: 12px 16px; }

    .hero-highlights { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
    .hero-highlights { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
    .footer-inner { grid-template-columns: 1fr; }
    .float-whatsapp { width: 52px; height: 52px; font-size: 1.4rem; bottom: 18px; inset-inline-start: 18px; }
    .back-to-top { width: 42px; height: 42px; bottom: 18px; inset-inline-end: 18px; }
}