/* ==========================================================================
   CyberBay — feuille de style
   Aucune dépendance externe : polices système, icônes SVG intégrées.
   ========================================================================== */

:root {
    --bg: #060a13;
    --bg-alt: #0a1020;
    --surface: #0e1627;
    --surface-2: #131d33;
    --line: rgba(148, 163, 184, 0.14);
    --line-strong: rgba(148, 163, 184, 0.26);
    --text: #e6edf7;
    --muted: #97a6bd;
    --accent: #2ee6c5;
    --accent-2: #38bdf8;
    --warn: #fbbf24;
    --gradient: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
    --radius: 14px;
    --radius-sm: 10px;
    --container: 1120px;
    --font: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system,
        BlinkMacSystemFont, "Helvetica Neue", Roboto, Arial, sans-serif;
    --font-display: "Segoe UI Variable Display", "Segoe UI", system-ui,
        -apple-system, BlinkMacSystemFont, "Helvetica Neue", Roboto, Arial, sans-serif;
    --mono: ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas,
        "Liberation Mono", monospace;
}

/* ---------- Base ---------- */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

main {
    flex: 1;
}

h1,
h2,
h3 {
    font-family: var(--font-display);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin: 0 0 0.5em;
    text-wrap: balance;
}

h1 {
    font-size: clamp(2.3rem, 5.2vw, 3.9rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.7rem, 3.2vw, 2.4rem);
    font-weight: 650;
}

h3 {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

p {
    margin: 0 0 1em;
    color: var(--muted);
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

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

svg {
    display: block;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 100;
    padding: 10px 16px;
    background: var(--accent);
    color: #04121a;
    font-weight: 600;
    border-radius: 8px;
}

.skip-link:focus {
    top: 12px;
}

/* ---------- En-tête ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(6, 10, 19, 0.78);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 68px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.logo:hover {
    text-decoration: none;
}

.logo svg {
    width: 28px;
    height: 28px;
}

.logo span span {
    color: var(--accent);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.site-nav a {
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.15s, background 0.15s;
}

.site-nav a:hover {
    color: var(--text);
    background: rgba(148, 163, 184, 0.08);
    text-decoration: none;
}

.site-nav a[aria-current="page"] {
    color: var(--text);
}

.site-nav a.btn {
    margin-left: 10px;
    padding: 9px 18px;
    color: #04121a;
}

.site-nav a.btn:hover {
    color: #04121a;
    background: var(--gradient);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    color: var(--text);
    cursor: pointer;
}

.nav-toggle svg {
    width: 22px;
    height: 22px;
}

/* ---------- Boutons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 24px;
    border-radius: 10px;
    border: 1px solid transparent;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.2;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s, background 0.15s;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--gradient);
    color: #04121a;
    box-shadow: 0 8px 28px -10px rgba(46, 230, 197, 0.55);
}

.btn-primary:hover {
    box-shadow: 0 12px 34px -10px rgba(46, 230, 197, 0.75);
}

.btn-ghost {
    background: rgba(148, 163, 184, 0.06);
    border-color: var(--line-strong);
    color: var(--text);
}

.btn-ghost:hover {
    border-color: var(--accent);
}

.btn svg {
    width: 18px;
    height: 18px;
}

/* ---------- Accueil : bannière ---------- */

.hero {
    position: relative;
    overflow: hidden;
    padding: clamp(64px, 10vw, 120px) 0 clamp(64px, 9vw, 104px);
    border-bottom: 1px solid var(--line);
}

.hero::before,
.page-header::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(148, 163, 184, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.07) 1px, transparent 1px);
    background-size: 56px 56px;
    -webkit-mask-image: radial-gradient(ellipse 75% 70% at 50% 0%, #000 30%, transparent 100%);
    mask-image: radial-gradient(ellipse 75% 70% at 50% 0%, #000 30%, transparent 100%);
    pointer-events: none;
}

.hero::after,
.page-header::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(600px 380px at 12% -5%, rgba(46, 230, 197, 0.16), transparent 70%),
        radial-gradient(640px 420px at 92% 10%, rgba(56, 189, 248, 0.15), transparent 70%);
    pointer-events: none;
}

.hero .container,
.page-header .container {
    position: relative;
    z-index: 1;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 56px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 22px;
    padding: 6px 14px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    background: rgba(14, 22, 39, 0.7);
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
}

.eyebrow::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 4px rgba(46, 230, 197, 0.18);
}

.hero .lead {
    max-width: 34em;
    font-size: clamp(1.05rem, 1.6vw, 1.22rem);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 32px;
}

/* Fenêtre « terminal » décorative */

.terminal {
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(19, 29, 51, 0.92), rgba(10, 16, 32, 0.92));
    box-shadow:
        0 40px 80px -40px rgba(0, 0, 0, 0.9),
        0 0 0 1px rgba(46, 230, 197, 0.05),
        0 0 90px -30px rgba(46, 230, 197, 0.35);
    font-family: var(--mono);
    font-size: 0.86rem;
    line-height: 1.9;
    overflow: hidden;
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.75rem;
}

.terminal-bar i {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(148, 163, 184, 0.3);
}

.terminal-bar span {
    margin-left: auto;
}

.terminal-body {
    margin: 0;
    padding: 18px 20px 22px;
    list-style: none;
    color: var(--muted);
}

.terminal-body li {
    display: flex;
    gap: 10px;
    white-space: nowrap;
}

.terminal-body .cmd {
    color: var(--text);
}

.terminal-body .cmd::before {
    content: "$";
    color: var(--accent);
}

.terminal-body .ok::before {
    content: "✓";
    color: var(--accent);
}

.terminal-body .warn {
    color: var(--warn);
}

.terminal-body .warn::before {
    content: "!";
    font-weight: 700;
}

.terminal-body .gap {
    height: 0.9em;
}

.cursor {
    display: inline-block;
    width: 8px;
    height: 1.1em;
    margin-top: 0.4em;
    background: var(--accent);
    animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

/* ---------- Bandeau d'expertises ---------- */

.strip {
    padding: 26px 0;
    border-bottom: 1px solid var(--line);
    background: var(--bg-alt);
}

.strip-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 14px;
}

.strip-label {
    margin-right: 8px;
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}

.chip {
    padding: 6px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface);
    font-size: 0.88rem;
    color: var(--text);
}

/* ---------- Sections ---------- */

.section {
    padding: clamp(64px, 9vw, 104px) 0;
}

.section:not(.section-alt) + .section:not(.section-alt) {
    padding-top: 0;
}

.section-alt {
    background: var(--bg-alt);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.section-head {
    max-width: 640px;
    margin-bottom: 44px;
}

.kicker {
    display: block;
    margin-bottom: 12px;
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
}

/* ---------- Cartes ---------- */

.grid {
    display: grid;
    gap: 22px;
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
    position: relative;
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(180deg, var(--surface), rgba(14, 22, 39, 0.55));
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    border-color: rgba(46, 230, 197, 0.4);
    box-shadow: 0 24px 48px -28px rgba(46, 230, 197, 0.35);
}

.card p:last-child {
    margin-bottom: 0;
}

.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    margin-bottom: 20px;
    border: 1px solid rgba(46, 230, 197, 0.28);
    border-radius: 12px;
    background: rgba(46, 230, 197, 0.08);
    color: var(--accent);
}

.icon svg {
    width: 22px;
    height: 22px;
}

.checklist {
    margin: 18px 0 0;
    padding: 18px 0 0;
    border-top: 1px solid var(--line);
    list-style: none;
}

.checklist li {
    position: relative;
    padding-left: 26px;
    margin-bottom: 8px;
    font-size: 0.95rem;
    color: var(--text);
}

.checklist li:last-child {
    margin-bottom: 0;
}

.checklist li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 0.5em;
    width: 12px;
    height: 7px;
    border-left: 2px solid var(--accent);
    border-bottom: 2px solid var(--accent);
    transform: rotate(-45deg);
    transform-origin: center;
}

/* ---------- Démarche ---------- */

.steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: step;
}

.step {
    position: relative;
    padding-top: 26px;
    border-top: 1px solid var(--line-strong);
    counter-increment: step;
}

.step::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    width: 48px;
    height: 2px;
    background: var(--gradient);
}

.step-num {
    display: block;
    margin-bottom: 10px;
    font-family: var(--mono);
    font-size: 0.82rem;
    color: var(--accent);
}

.step-num::before {
    content: "0" counter(step);
}

.step p {
    font-size: 0.97rem;
    margin-bottom: 0;
}

/* ---------- Appel à l'action ---------- */

.cta-band {
    position: relative;
    overflow: hidden;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: clamp(32px, 5vw, 52px);
    border: 1px solid rgba(46, 230, 197, 0.3);
    border-radius: 20px;
    background:
        radial-gradient(500px 240px at 100% 0%, rgba(56, 189, 248, 0.18), transparent 70%),
        radial-gradient(500px 240px at 0% 100%, rgba(46, 230, 197, 0.16), transparent 70%),
        var(--surface);
}

.cta-band h2 {
    margin-bottom: 8px;
}

.cta-band p {
    margin: 0;
    max-width: 34em;
}

/* ---------- En-tête des pages internes ---------- */

.page-header {
    position: relative;
    overflow: hidden;
    padding: clamp(56px, 8vw, 96px) 0 clamp(44px, 6vw, 68px);
    border-bottom: 1px solid var(--line);
}

.page-header h1 {
    font-size: clamp(2.1rem, 4.6vw, 3.3rem);
}

.page-header p {
    max-width: 38em;
    margin: 0;
    font-size: clamp(1.05rem, 1.5vw, 1.2rem);
}

/* ---------- À propos ---------- */

.split {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
    align-items: start;
}

.prose p {
    font-size: 1.08rem;
}

.prose p strong {
    color: var(--text);
    font-weight: 600;
}

.threats {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 26px 0 0;
    padding: 0;
    list-style: none;
}

.panel {
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
}

.panel h2 {
    font-size: 1.3rem;
}

.fact-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.fact-list li {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    font-size: 0.97rem;
}

.fact-list li:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.fact-list span:first-child {
    color: var(--muted);
}

.fact-list span:last-child {
    text-align: right;
    color: var(--text);
}

/* ---------- Contact ---------- */

.contact-card {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.contact-card .icon {
    flex: none;
    margin-bottom: 0;
}

.contact-card h2 {
    margin-bottom: 4px;
    font-size: 0.8rem;
    font-family: var(--mono);
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
}

.contact-card .value {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text);
    word-break: break-word;
}

.contact-card .value a {
    color: var(--text);
}

.contact-card .value a:hover {
    color: var(--accent);
}

.contact-card .hint {
    margin: 4px 0 0;
    font-size: 0.93rem;
}

.stack {
    display: grid;
    gap: 22px;
}

/* ---------- Pied de page ---------- */

.site-footer {
    margin-top: auto;
    padding: 44px 0 30px;
    border-top: 1px solid var(--line);
    background: var(--bg-alt);
    font-size: 0.94rem;
}

.footer-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 32px;
}

.footer-brand p {
    max-width: 26em;
    margin: 12px 0 0;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 40px 56px;
}

.footer-links h2 {
    margin-bottom: 12px;
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
}

.footer-links ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
    color: var(--text);
}

.footer-links a {
    color: var(--text);
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-bottom {
    margin-top: 34px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.88rem;
}

/* ---------- Page 404 ---------- */

.not-found {
    padding: clamp(80px, 14vw, 160px) 0;
    text-align: center;
}

.not-found .code {
    font-family: var(--mono);
    font-size: clamp(4rem, 14vw, 8rem);
    font-weight: 700;
    line-height: 1;
    margin-bottom: 16px;
}

.not-found p {
    margin-bottom: 28px;
}

/* ---------- Apparition au défilement ---------- */

.js .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.js .reveal.is-visible {
    opacity: 1;
    transform: none;
}

.js .grid .reveal:nth-child(2),
.js .steps .reveal:nth-child(2) {
    transition-delay: 0.08s;
}

.js .grid .reveal:nth-child(3),
.js .steps .reveal:nth-child(3) {
    transition-delay: 0.16s;
}

.js .grid .reveal:nth-child(4),
.js .steps .reveal:nth-child(4) {
    transition-delay: 0.24s;
}

/* ---------- Adaptatif ---------- */

@media (max-width: 960px) {
    .hero-grid,
    .split {
        grid-template-columns: minmax(0, 1fr);
        gap: 44px;
    }

    .grid-3 {
        grid-template-columns: minmax(0, 1fr);
    }

    .steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 34px 22px;
    }
}

@media (max-width: 760px) {
    body {
        font-size: 16px;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .site-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 14px 24px 22px;
        background: var(--bg);
        border-bottom: 1px solid var(--line);
    }

    .site-nav.is-open {
        display: flex;
    }

    .site-nav a {
        padding: 12px 14px;
        font-size: 1rem;
    }

    .site-nav a.btn {
        margin: 10px 0 0;
        padding: 13px 18px;
    }

    .grid-2 {
        grid-template-columns: minmax(0, 1fr);
    }

    .terminal {
        font-size: 0.76rem;
    }

    .terminal-body {
        padding: 14px 14px 18px;
        overflow-x: auto;
    }

    .hero-actions .btn,
    .cta-band .btn {
        width: 100%;
    }
}

@media (max-width: 520px) {
    .steps {
        grid-template-columns: minmax(0, 1fr);
    }

    .card,
    .panel {
        padding: 22px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }

    .js .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ---------- Utilitaires de titres ---------- */

.h2 {
    font-size: clamp(1.7rem, 3.2vw, 2.4rem);
    font-weight: 650;
}

.h3 {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}