:root {
    --bg-dark: #050c18;
    --navy-deep: #0a192f;
    --navy-light: #172a45;
    --cyber-cyan: #00f5d4;
    --neon-blue: #00b4d8;
    --slate-gray: #9aa6c4;
    --silver-white: #e6f1ff;
    --white: #ffffff;
    --radius: 12px;
    --max: 72rem;
    --header-h: 4.5rem;
    --track: 0.14em;
    --tt: uppercase;
    --font-latin: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --font-arabic: 'Noto Kufi Arabic', 'Segoe UI', Tahoma, sans-serif;
}

/* L'arabe ne supporte ni l'espacement de lettres ni les capitales */
:root[lang="ar"] {
    --track: 0;
    --tt: none;
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 1rem); }

body {
    background: var(--bg-dark);
    color: var(--silver-white);
    font-family: var(--font-latin);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

:root[lang="ar"] body {
    font-family: var(--font-arabic);
    line-height: 1.85;
}

a { color: inherit; }
svg { display: block; }

:focus-visible {
    outline: 2px solid var(--cyber-cyan);
    outline-offset: 3px;
    border-radius: 4px;
}

.container { width: min(var(--max), 100% - 2.5rem); margin-inline: auto; }

.skip-link {
    position: absolute;
    inset-inline-start: 1rem;
    top: -4rem;
    z-index: 200;
    background: var(--cyber-cyan);
    color: var(--bg-dark);
    padding: 0.6rem 1rem;
    border-radius: 4px;
    font-weight: 700;
    text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* ---------- Header ---------- */
.site-header {
    position: fixed;
    inset-inline: 0;
    top: 0;
    z-index: 100;
    background: rgba(5, 12, 24, 0.88);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 245, 212, 0.08);
}

.header-inner {
    min-height: var(--header-h);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    padding-block: 0.6rem;
}

.nav-logo {
    font-weight: 900;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
    color: var(--white);
    text-decoration: none;
    text-transform: uppercase;
    direction: ltr;
}
.nav-logo { display: flex; flex-direction: column; gap: 0.15rem; line-height: 1.05; }
.nav-logo .accent { color: var(--cyber-cyan); }
.logo-sub { font-size: 0.62rem; font-weight: 500; letter-spacing: 0.02em; text-transform: none; color: var(--slate-gray); }
:root[lang="ar"] .logo-sub { direction: rtl; font-family: var(--font-arabic); letter-spacing: 0; }
@media (max-width: 64rem) { .logo-sub { display: none; } }

.main-nav { margin-inline: auto; }
.main-nav ul { display: flex; list-style: none; gap: 1.75rem; }
.main-nav a {
    color: var(--slate-gray);
    text-decoration: none;
    font-size: 0.95rem;
    padding-block: 0.7rem;
    transition: color 0.25s;
}
.main-nav a:hover { color: var(--cyber-cyan); }

.header-actions { display: flex; align-items: center; gap: 1rem; }

.lang-switch {
    display: inline-flex;
    padding: 3px;
    gap: 2px;
    background: rgba(23, 42, 69, 0.7);
    border: 1px solid rgba(0, 180, 216, 0.3);
    border-radius: 50px;
}

.lang-switch a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    min-width: 2.75rem;
    min-height: 2.25rem;
    padding: 0 0.7rem;
    border: 0;
    border-radius: 50px;
    background: transparent;
    color: var(--silver-white);
    font: 600 0.85rem/1 var(--font-latin);
    cursor: pointer;
    transition: background 0.25s, color 0.25s;
}
.lang-switch a[lang="ar"] { font-family: var(--font-arabic); }
.lang-switch a:hover { color: var(--cyber-cyan); }
.lang-switch a[aria-current="page"] {
    background: var(--cyber-cyan);
    color: var(--bg-dark);
}

/* ---------- Boutons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    padding: 0.7rem 1.6rem;
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    border: 1px solid var(--cyber-cyan);
    transition: transform 0.25s, box-shadow 0.25s, background 0.25s;
}
.btn-primary { background: var(--cyber-cyan); color: var(--bg-dark); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 22px rgba(0, 245, 212, 0.4); }
.btn-outline { background: transparent; color: var(--cyber-cyan); }
.btn-outline:hover { background: rgba(0, 245, 212, 0.1); box-shadow: 0 0 15px rgba(0, 245, 212, 0.2); }
.contact-mail { display: inline-block; margin-top: 1.25rem; color: var(--slate-gray); text-decoration: none; direction: ltr; unicode-bidi: isolate; transition: color 0.25s; }
.contact-mail:hover { color: var(--cyber-cyan); }

/* ---------- Hero ---------- */
.hero {
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    padding-block: calc(var(--header-h) + 3rem) 4rem;
    background:
        radial-gradient(40rem 28rem at 12% 25%, rgba(0, 245, 212, 0.09), transparent 65%),
        radial-gradient(34rem 26rem at 90% 80%, rgba(0, 180, 216, 0.07), transparent 65%);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
    gap: 4rem;
}

.eyebrow {
    color: var(--cyber-cyan);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: var(--track);
    text-transform: var(--tt);
}
.hero .eyebrow { margin-bottom: 1rem; }

.hero-title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 900;
    line-height: 1.12;
    color: var(--white);
    margin-bottom: 1.5rem;
}
:root[lang="ar"] .hero-title { line-height: 1.4; font-size: clamp(2rem, 4.6vw, 3rem); }
.hero-title span { color: var(--cyber-cyan); }

.hero-desc {
    color: var(--slate-gray);
    font-size: 1.1rem;
    max-width: 40rem;
    margin-bottom: 2.25rem;
}

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

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

.svg-container {
    width: 100%;
    max-width: 320px;
    aspect-ratio: 1;
    background: linear-gradient(145deg, #0a192f, #071120);
    border: 1px solid rgba(0, 245, 212, 0.12);
    padding: 2rem;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}
.svg-container svg { width: 100%; height: 100%; overflow: visible; }

/* ---------- Sections ---------- */
.section { padding-block: 6rem; }
.section-alt {
    background: var(--navy-deep);
    border-block: 1px solid rgba(0, 245, 212, 0.06);
}

.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header h2 {
    font-size: clamp(1.75rem, 3.6vw, 2.4rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.25;
    margin-top: 0.5rem;
}

.service-groups { display: grid; gap: 3rem; }
.group-title {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    margin-bottom: 1.1rem;
    color: var(--cyber-cyan);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: var(--track);
    text-transform: var(--tt);
}
.group-title::after { content: ''; flex: 1; border-top: 1px solid rgba(0, 245, 212, 0.2); }
.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--navy-light);
    padding: 2.25rem 1.75rem;
    border-radius: var(--radius);
    border: 1px solid transparent;
    transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.service-card:hover {
    border-color: var(--cyber-cyan);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.service-card { display: flex; flex-direction: column; position: relative; overflow: hidden; }
.service-card::before {
    content: '';
    position: absolute;
    inset-inline: 0;
    top: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--cyber-cyan), var(--neon-blue), transparent);
    opacity: 0;
    transition: opacity 0.25s;
}
.service-card:hover::before { opacity: 1; }
:root[dir="rtl"] .service-card::before { background: linear-gradient(270deg, var(--cyber-cyan), var(--neon-blue), transparent); }

.card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; }
.card-top .card-icon { margin-bottom: 0; }
.card-num {
    font: 900 2.25rem/1 var(--font-latin);
    color: rgba(0, 245, 212, 0.14);
    letter-spacing: -0.03em;
    direction: ltr;
}

.service-list { list-style: none; display: grid; gap: 1.1rem; margin-top: 0.25rem; }
.service-list li { padding-inline-start: 1rem; border-inline-start: 2px solid rgba(0, 245, 212, 0.25); transition: border-color 0.25s; }
.service-card:hover .service-list li { border-color: rgba(0, 245, 212, 0.55); }
.service-list h5 { color: var(--silver-white); font-size: 0.98rem; font-weight: 700; line-height: 1.4; }
.service-list summary {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    list-style: none;
    cursor: pointer;
    border-radius: 4px;
}
.service-list summary::-webkit-details-marker { display: none; }
.service-list summary::after { content: '+'; color: var(--cyber-cyan); font-weight: 700; font-size: 1.15rem; line-height: 1.2; }
.service-list details[open] summary::after { content: '\2212'; }
.service-list details > p { margin-top: 0.45rem; font-size: 0.9rem; line-height: 1.6; }

@media (min-width: 64rem) {
    .service-cards--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .service-cards--1 .service-list { grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); gap: 1.25rem 2rem; }
}

.card-icon {
    width: 3rem;
    height: 3rem;
    display: grid;
    place-items: center;
    margin-bottom: 1.25rem;
    color: var(--cyber-cyan);
    background: rgba(0, 245, 212, 0.08);
    border: 1px solid rgba(0, 245, 212, 0.2);
    border-radius: 10px;
}
.card-icon svg { width: 1.5rem; height: 1.5rem; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

.service-card h4 { color: var(--white); font-size: 1.2rem; margin-bottom: 0.75rem; font-weight: 700; }
.service-card p { color: var(--slate-gray); font-size: 0.95rem; }

/* Approche */
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2rem 1.5rem; }
.step { position: relative; }
.step-num {
    width: 3rem;
    height: 3rem;
    display: grid;
    place-items: center;
    margin-bottom: 1.1rem;
    border-radius: 50%;
    border: 1px solid var(--cyber-cyan);
    background: rgba(0, 245, 212, 0.08);
    color: var(--cyber-cyan);
    font: 700 1.1rem/1 var(--font-latin);
    position: relative;
    z-index: 1;
}
.step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 1.5rem;
    inset-inline-start: 3.5rem;
    width: calc(100% - 3.5rem + 1.5rem - 0.5rem);
    border-top: 1px dashed rgba(0, 245, 212, 0.35);
}
.step h3 { color: var(--white); font-size: 1.1rem; margin-bottom: 0.5rem; }
.step p { color: var(--slate-gray); font-size: 0.95rem; }

/* À propos */
.about-lead {
    max-width: 46rem;
    margin: 0 auto 3rem;
    text-align: center;
    color: var(--slate-gray);
    font-size: 1.1rem;
}
.pillars { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); gap: 1.5rem; }
.pillar { padding: 1.5rem; border-inline-start: 2px solid var(--cyber-cyan); background: rgba(23, 42, 69, 0.45); border-radius: 0 var(--radius) var(--radius) 0; }
:root[dir="rtl"] .pillar { border-radius: var(--radius) 0 0 var(--radius); }
.pillar h3 { color: var(--white); font-size: 1.1rem; margin-bottom: 0.4rem; }
.pillar p { color: var(--slate-gray); font-size: 0.95rem; }

/* Contact */
.contact-box {
    text-align: center;
    padding: clamp(2rem, 5vw, 3.5rem);
    border: 1px solid rgba(0, 245, 212, 0.2);
    border-radius: 20px;
    background: linear-gradient(145deg, #0a192f, #071120);
}
.contact-box h2 { color: var(--white); font-size: clamp(1.6rem, 3.2vw, 2.1rem); font-weight: 900; margin-bottom: 0.75rem; }
.contact-box p { color: var(--slate-gray); max-width: 36rem; margin: 0 auto 1.75rem; }

/* ---------- Footer ---------- */
.site-footer {
    padding-block: 2.5rem;
    border-top: 1px solid rgba(0, 245, 212, 0.06);
    color: var(--slate-gray);
    font-size: 0.9rem;
}
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem 2rem; }

/* ---------- Animations du logo ---------- */
.draw { stroke-dasharray: 100; stroke-dashoffset: 0; animation: draw 3.5s cubic-bezier(0.4, 0, 0.2, 1) both; }
.ring { transform-box: fill-box; transform-origin: center; animation: spin 28s linear infinite; }
.node { transform-box: fill-box; transform-origin: center; animation: blink 2s ease-in-out infinite alternate; }
.delay-1 { animation-delay: 0.5s; }
.delay-2 { animation-delay: 1s; }
.delay-3 { animation-delay: 1.5s; }

@keyframes draw { from { stroke-dashoffset: 100; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes blink {
    from { opacity: 0.55; transform: scale(0.8); }
    to   { opacity: 1;    transform: scale(1.2); }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 62rem) {
    .hero-grid { grid-template-columns: 1fr; gap: 3rem; text-align: center; }
    .hero-desc { margin-inline: auto; }
    .hero-actions { justify-content: center; }
}

@media (max-width: 62rem) {
    .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .step:nth-child(2)::after { display: none; }
}

@media (max-width: 48rem) {
    :root { --header-h: 7.5rem; }
    .header-inner { justify-content: space-between; }
    .main-nav { order: 3; width: 100%; margin: 0; }
    .main-nav ul { justify-content: center; gap: 1.5rem; }
    .steps { grid-template-columns: 1fr; }
    .step::after { display: none; }
    .section { padding-block: 4rem; }
    .footer-inner { flex-direction: column; text-align: center; }
}