/* =========================================================================
   AlcaVolt — brand: black & red. Bilingual (EN/AR), RTL-aware via logical
   properties. Colours sampled from the logo SVG.
   ========================================================================= */

:root {
    /* Brand */
    --red:        #F02F00;   /* bright edge */
    --red-hot:    #FF4A1C;   /* hover / glow */
    --red-deep:   #A00600;
    --red-dark:   #720400;
    --salmon:     #F58F81;   /* inner highlight lines */

    /* Surfaces */
    --bg:         #060607;
    --bg-alt:     #0b0b0d;
    --surface:    #111114;
    --surface-2:  #17171b;
    --border:     rgba(255,255,255,.09);
    --border-red: rgba(240,47,0,.35);

    /* Text */
    --text:       #f5f5f6;
    --muted:      #a2a2ab;
    --faint:      #6e6e78;

    /* System */
    --radius:     16px;
    --radius-sm:  10px;
    --maxw:       1160px;
    --gutter:     clamp(1.25rem, 4vw, 2.5rem);
    --shadow:     0 24px 60px -20px rgba(0,0,0,.7);
    --shadow-red: 0 20px 50px -18px rgba(240,47,0,.45);
    --ease:       cubic-bezier(.22,.61,.36,1);
    --header-h:   72px;
    --font:       'Montserrat', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

html[lang="ar"] { --font: 'Cairo', system-ui, 'Segoe UI', Tahoma, sans-serif; }

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img, svg, iframe { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
:focus-visible { outline: 2px solid var(--red-hot); outline-offset: 3px; border-radius: 4px; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }

.skip-link {
    position: absolute; inset-inline-start: -999px; top: 0; z-index: 200;
    background: var(--red); color: #fff; padding: .6rem 1rem; border-radius: 0 0 8px 0;
}
.skip-link:focus { inset-inline-start: 0; }

.icon { width: 24px; height: 24px; flex: none; }
.icon-inline { width: 1.05em; height: 1.05em; vertical-align: -.15em; }
[dir="rtl"] .icon-inline,
[dir="rtl"] .card-list .icon-check { /* keep glyph orientation sensible */ }
[dir="rtl"] .btn .icon-inline svg,
[dir="rtl"] .icon-inline { transform: scaleX(-1); }

/* ---------- Typography helpers ---------- */
.eyebrow {
    display: inline-block;
    font-size: .78rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
    color: var(--red);
    margin-bottom: 1rem;
}
html[lang="ar"] .eyebrow { letter-spacing: .04em; }

.section-title {
    font-size: clamp(1.7rem, 3.6vw, 2.6rem);
    font-weight: 800; line-height: 1.15; letter-spacing: -.01em;
}
.section-sub { color: var(--muted); font-size: 1.05rem; margin-top: 1rem; max-width: 60ch; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
    padding: .85rem 1.5rem; border-radius: 999px;
    font-weight: 700; font-size: .98rem; white-space: nowrap;
    transition: transform .2s var(--ease), box-shadow .25s var(--ease), background .25s, border-color .25s, color .2s;
}
.btn-primary {
    background: linear-gradient(135deg, var(--red) 0%, var(--red-deep) 100%);
    color: #fff; box-shadow: var(--shadow-red);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 26px 60px -16px rgba(240,47,0,.6); background: linear-gradient(135deg, var(--red-hot), var(--red)); }
.btn-ghost { border: 1px solid var(--border); color: var(--text); background: rgba(255,255,255,.02); }
.btn-ghost:hover { border-color: var(--border-red); color: #fff; background: rgba(240,47,0,.08); transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ---------- Header / nav ---------- */
.site-header {
    position: fixed; inset-inline: 0; top: 0; z-index: 100;
    height: var(--header-h);
    display: flex; align-items: center;
    background: transparent;
    transition: background .3s, border-color .3s, backdrop-filter .3s;
    border-bottom: 1px solid transparent;
}
.site-header.scrolled {
    background: rgba(8,8,10,.82);
    backdrop-filter: saturate(160%) blur(14px);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
    border-bottom-color: var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.brand { display: flex; align-items: center; gap: .6rem; }
.brand-mark { width: 34px; height: 34px; filter: drop-shadow(0 3px 8px rgba(240,47,0,.5)); }
.brand-name { font-weight: 800; font-size: 1.25rem; letter-spacing: .02em; }

.main-nav { display: flex; align-items: center; gap: 1.9rem; }
.main-nav > a:not(.btn) { color: var(--muted); font-weight: 600; font-size: .96rem; position: relative; transition: color .2s; }
.main-nav > a:not(.btn):hover { color: var(--text); }
.main-nav > a:not(.btn)::after {
    content: ""; position: absolute; inset-inline-start: 0; bottom: -6px; height: 2px; width: 0;
    background: var(--red); transition: width .25s var(--ease);
}
.main-nav > a:not(.btn):hover::after { width: 100%; }
.lang-toggle {
    border: 1px solid var(--border); border-radius: 999px; padding: .35rem .85rem !important;
    font-size: .85rem !important; color: var(--text) !important;
}
.lang-toggle:hover { border-color: var(--border-red); background: rgba(240,47,0,.08); }
.lang-toggle::after { display: none; }
.nav-cta { padding: .6rem 1.25rem; }

.nav-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: 10px; }
.nav-toggle .nav-toggle-close { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle-open { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle-close { display: block; }

/* ---------- Hero ---------- */
.hero { position: relative; padding-top: calc(var(--header-h) + clamp(3rem, 9vw, 7rem)); padding-bottom: clamp(2rem, 5vw, 4rem); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-bg::before {
    content: ""; position: absolute; top: -20%; inset-inline-start: 50%; transform: translateX(-50%);
    width: min(1100px, 120%); height: 720px;
    background: radial-gradient(closest-side, rgba(240,47,0,.28), rgba(160,6,0,.10) 45%, transparent 72%);
    filter: blur(6px);
}
.hero-bg::after {
    content: ""; position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
    background-size: 46px 46px;
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 78%);
            mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 78%);
}
.hero-inner { position: relative; z-index: 1; max-width: 820px; }
.hero-title { font-size: clamp(2.3rem, 6vw, 4.1rem); font-weight: 800; line-height: 1.05; letter-spacing: -.02em; }
html[lang="ar"] .hero-title { line-height: 1.2; }
.hero-sub { color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.25rem); margin-top: 1.4rem; max-width: 60ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2.2rem; }

/* ---------- Stats band ---------- */
.stats {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
    margin-top: clamp(3rem, 7vw, 5rem);
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.stat { background: var(--bg-alt); padding: 1.6rem 1.25rem; text-align: center; }
.stat-value { display: block; font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 800; color: #fff; line-height: 1; }
.stat-value { background: linear-gradient(180deg, #fff, #ffd9cf); -webkit-background-clip: text; background-clip: text; }
.stat-label { display: block; margin-top: .5rem; font-size: .82rem; color: var(--muted); letter-spacing: .02em; }

/* ---------- Sections ---------- */
.section { padding-block: clamp(4rem, 9vw, 7rem); }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section-head { max-width: 720px; margin-bottom: clamp(2.5rem, 5vw, 3.5rem); }

/* ---------- Cards grid ---------- */
.cards { display: grid; gap: 1.5rem; }
.services-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card {
    position: relative; background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 2rem 1.75rem;
    transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
    overflow: hidden;
}
.card::before {
    content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
    background: linear-gradient(90deg, var(--red), var(--red-deep));
    transform: scaleX(0); transform-origin: inline-start; transition: transform .35s var(--ease);
}
.card:hover { transform: translateY(-6px); border-color: var(--border-red); box-shadow: var(--shadow); }
.card:hover::before { transform: scaleX(1); }

.card-icon, .value-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 54px; height: 54px; border-radius: 14px;
    background: radial-gradient(circle at 30% 25%, rgba(240,47,0,.28), rgba(240,47,0,.06));
    border: 1px solid var(--border-red);
    color: var(--red-hot); margin-bottom: 1.3rem;
}
.card-icon .icon, .value-icon .icon { width: 27px; height: 27px; }
.card-title { font-size: 1.3rem; font-weight: 700; margin-bottom: .6rem; }
.card-desc { color: var(--muted); font-size: .98rem; }
.card-list { margin-top: 1.3rem; display: grid; gap: .6rem; }
.card-list li { display: flex; align-items: flex-start; gap: .6rem; font-size: .93rem; color: #d7d7dc; }
.icon-check { width: 18px; height: 18px; color: var(--red-hot); margin-top: .18rem; }

/* ---------- Clients / trusted-by wall ----------
   Light tiles so real client logos (designed for white backgrounds) render
   correctly on the dark section. Logos rest muted, come to full colour on hover. */
.clients-grid {
    display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem;
}
.client-card {
    flex: 1 1 220px; max-width: 258px;
    display: flex; align-items: center; justify-content: center; text-align: center;
    min-height: 122px; padding: 1.4rem 1.5rem;
    background: #ffffff; border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: 0 10px 30px -18px rgba(0,0,0,.8);
    transition: transform .3s var(--ease), box-shadow .3s;
}
.client-card:hover { transform: translateY(-5px); box-shadow: 0 20px 40px -18px rgba(0,0,0,.9); }
/* Reversed (white) logos sit on a dark tile so they stay visible */
.client-card.is-dark { background: #101014; border-color: rgba(255,255,255,.14); }
.client-card.is-dark .client-name { color: #f5f5f6; }
.client-logo {
    max-height: 54px; max-width: 82%; width: auto; object-fit: contain;
    opacity: .95; transition: opacity .3s, transform .3s var(--ease);
}
.client-card:hover .client-logo { opacity: 1; }
.client-name {
    font-weight: 700; font-size: 1.02rem; letter-spacing: .01em; color: #16161b;
}

/* ---------- Values / why us ---------- */
.values-grid { grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); }
.value { display: flex; gap: 1.1rem; padding: 1.6rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); transition: border-color .3s, transform .3s var(--ease); }
.value:hover { border-color: var(--border-red); transform: translateY(-4px); }
.value-icon { margin-bottom: 0; width: 48px; height: 48px; }
.value-title { font-size: 1.1rem; font-weight: 700; margin-bottom: .3rem; }
.value-desc { color: var(--muted); font-size: .92rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; }
.contact-list { display: grid; gap: 1.3rem; margin-bottom: 1.8rem; }
.contact-list li { display: flex; gap: 1rem; align-items: flex-start; }
.contact-ic { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; flex: none; border-radius: 12px; background: rgba(240,47,0,.08); border: 1px solid var(--border-red); color: var(--red-hot); }
.contact-ic .icon { width: 22px; height: 22px; }
.contact-k { display: block; font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--faint); margin-bottom: .15rem; }
.contact-v { display: block; color: var(--text); font-weight: 600; }
a.contact-v:hover { color: var(--red-hot); }
.contact-link { display: inline-flex; align-items: center; gap: .3rem; margin-top: .4rem; color: var(--red-hot); font-weight: 600; font-size: .9rem; }
.contact-link:hover { text-decoration: underline; }
.map { margin-top: .5rem; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.map iframe { width: 100%; height: 260px; border: 0; filter: grayscale(.3) contrast(1.05) brightness(.85); }

/* ---------- Form ---------- */
.contact-form { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.2rem); display: grid; gap: 1.1rem; box-shadow: var(--shadow); }
.field { display: grid; gap: .45rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field label { font-size: .85rem; font-weight: 600; color: var(--muted); }
.field-opt { font-weight: 400; color: var(--faint); font-size: .82em; }
.field input, .field select, .field textarea {
    width: 100%; padding: .8rem .95rem; border-radius: var(--radius-sm);
    background: var(--bg); border: 1px solid var(--border); color: var(--text);
    font: inherit; font-size: .96rem; transition: border-color .2s, box-shadow .2s, background .2s;
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus, .field select:focus, .field textarea:focus {
    outline: none; border-color: var(--red); box-shadow: 0 0 0 3px rgba(240,47,0,.18); background: var(--surface-2);
}
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23a2a2ab' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .9rem center; padding-inline-end: 2.4rem; }
[dir="rtl"] .field select { background-position: left .9rem center; }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; opacity: 0; }
.form-status { font-size: .92rem; font-weight: 600; min-height: 1.2em; }
.form-status.is-error { color: #ff8b73; }
.form-status.is-success { color: #7ee787; }
.contact-form.is-sending .btn-primary { opacity: .7; pointer-events: none; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg); border-top: 1px solid var(--border); padding-top: clamp(3rem, 6vw, 4.5rem); }
.footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 2rem; padding-bottom: 3rem; }
.footer-logo { height: auto; margin-bottom: 1rem; }
.footer-tagline { color: var(--muted); font-size: .95rem; max-width: 34ch; }
.footer-col h4 { font-size: .82rem; text-transform: uppercase; letter-spacing: .12em; color: var(--faint); margin-bottom: 1rem; }
.footer-col a, .footer-addr { display: block; color: var(--muted); font-size: .95rem; padding-block: .3rem; transition: color .2s; }
.footer-col a:hover { color: var(--red-hot); }
.footer-addr { color: var(--faint); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 1.5rem; border-top: 1px solid var(--border); color: var(--faint); font-size: .88rem; }
.to-top { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--border); color: var(--muted); transition: all .2s; }
.to-top:hover { color: #fff; border-color: var(--border-red); background: rgba(240,47,0,.1); transform: translateY(-3px); }

/* ---------- Reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .contact-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
    .nav-toggle { display: inline-flex; }
    .main-nav {
        position: fixed; inset: var(--header-h) 0 auto 0;
        flex-direction: column; align-items: stretch; gap: 0;
        background: rgba(9,9,11,.98); backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
        padding: .5rem var(--gutter) 1.5rem;
        transform: translateY(-120%); transition: transform .35s var(--ease);
        max-height: calc(100vh - var(--header-h)); overflow-y: auto;
    }
    .main-nav.open { transform: translateY(0); }
    .main-nav > a { padding-block: .9rem; border-bottom: 1px solid var(--border); }
    .main-nav > a:not(.btn)::after { display: none; }
    .lang-toggle { margin-top: 1rem; text-align: center; }
    .nav-cta { margin-top: 1rem; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .services-grid { grid-template-columns: 1fr; }
    .field-row { grid-template-columns: 1fr; }
}
@media (max-width: 420px) {
    .footer-inner { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

/* ---------- Motion / print ---------- */
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
    .reveal { opacity: 1; transform: none; }
}