/* ===== Reset minimal & tokens ===== */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
:root {
    --bg: #0b1220;
    --bg-elev: #101b33;
    --text: #e6edf6;
    --muted: #9fb0c3;
    --accent: #64ffda;
    --accent-2: #7aa2f7;
    --card: #0f1a2e;
    --shadow: 0 10px 30px rgba(0,0,0,.25);
    --radius: 16px;
    --gap: 1rem;
    --maxw: 1100px;
    --speed: 300ms;
    --outline: 2px dashed var(--accent);
}

/* Thème clair */
@media (prefers-color-scheme: light) {
    :root {
        --bg: #f7f8fa;
        --bg-elev: #ffffff;
        --text: #1d2430;
        --muted: #586071;
        --accent: #0fd6b4;
        --accent-2: #3169ff;
        --card: #ffffff;
        --shadow: 0 10px 25px rgba(0,0,0,.08);
    }
}

/* Forçage via data-theme */
html[data-theme="light"] {
    --bg: #f7f8fa;
    --bg-elev: #ffffff;
    --text: #1d2430;
    --muted: #586071;
    --accent: #0fd6b4;
    --accent-2: #3169ff;
    --card: #ffffff;
    --shadow: 0 10px 25px rgba(0,0,0,.08);
}
html[data-theme="dark"] {
    --bg: #0b1220;
    --bg-elev: #101b33;
    --text: #e6edf6;
    --muted: #9fb0c3;
    --accent: #64ffda;
    --accent-2: #7aa2f7;
    --card: #0f1a2e;
    --shadow: 0 10px 30px rgba(0,0,0,.25);
}

html { scroll-behavior: smooth; }
body {
    font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
    color: var(--text);
    background: radial-gradient(1200px 600px at 80% -20%, rgba(100,255,218,.06), transparent 60%), var(--bg);
}

/* Accessibilité */
.skip-link {
    position: absolute; left: -9999px; top: -9999px;
}
.skip-link:focus { position: fixed; left: 1rem; top: 1rem; background: var(--accent); color:#003; padding:.5rem 1rem; border-radius:8px; }

/* Layout utilitaires */
.container { width: min(100% - 2rem, var(--maxw)); margin-inline: auto; }
.section { padding: 5rem 0; }
.section-title { font-size: clamp(1.4rem, 1.2rem + 1.2vw, 2rem); border-bottom: 2px solid var(--accent); display: inline-block; padding-bottom: .3rem; }

/* Header */
.site-header {
    position: sticky; top: 0; z-index: 20; backdrop-filter: saturate(180%) blur(10px);
    background: color-mix(in oklab, var(--bg) 75%, transparent);
    transition: box-shadow var(--speed);
}
.site-header.elevated { box-shadow: 0 6px 20px rgba(0,0,0,.18); }
.header-grid {
    display: grid; grid-template-columns: auto 40px 1fr; align-items: center; gap: var(--gap);
    padding: .8rem 0;
}
.brand { margin: 0; font-weight: 800; letter-spacing: .4px; }
.brand-accent { color: var(--accent); }
.site-nav ul { display: flex; gap: 1rem; justify-content: flex-end; align-items: center; list-style: none; margin: 0; padding: 0; }
.site-nav a { text-decoration: none; color: var(--text); opacity: .9; }
.site-nav a:hover { color: var(--accent); opacity: 1; }
.theme-toggle { width: 40px; height: 40px; border-radius: 50%; border: 1px solid color-mix(in oklab, var(--text) 20%, transparent); background: var(--bg-elev); color: var(--text); cursor: pointer; display: grid; place-items: center; }

/* Hero */
.hero { position: relative; padding: 7rem 0 5rem; }
.hero-inner { text-align: center; }
.hero h2 { font-size: clamp(1.6rem, 1.2rem + 2vw, 2.6rem); margin-bottom: .5rem; }
.typed { min-height: 1.8em; font-size: 1.05rem; color: var(--muted); }
.hero-cta { margin-top: 1.2rem; display: flex; gap: .8rem; justify-content: center; }
.hero-stats { margin-top: 2rem; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1rem; }
.kpi { font-size: clamp(1.6rem, 1.2rem + 1.5vw, 2.2rem); font-weight: 800; display: block; }
.scroll-indicator { position: absolute; left: 50%; bottom: .5rem; transform: translateX(-50%); opacity: .6; }

.btn { background: var(--accent); color: #042; border: none; padding: .7rem 1rem; border-radius: 12px; text-decoration: none; display: inline-block; font-weight: 600; box-shadow: var(--shadow); transition: transform var(--speed), filter var(--speed); }
.btn:hover { transform: translateY(-2px); filter: saturate(1.1); }
.btn-ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); box-shadow: none; }

/* About */
.lead { font-size: 1.05rem; color: var(--muted); max-width: 70ch; }

/* Skills */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin-top: 1rem; }
.skill { background: var(--card); border-radius: var(--radius); padding: 1rem; box-shadow: var(--shadow); }
.skill h4 { margin: 0 0 .6rem; }
.bar { position: relative; height: 10px; border-radius: 999px; background: color-mix(in oklab, var(--accent) 15%, transparent); overflow: hidden; }
.bar::after { content: ""; position: absolute; inset: 0; width: 0; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 900ms ease; }

/* CV */
.cv-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; margin-top: 1rem; }
.card { background: var(--card); border-radius: var(--radius); padding: 1rem; box-shadow: var(--shadow); }

/* Projects */
.filters { display: flex; gap: .5rem; margin: .6rem 0 1.2rem; flex-wrap: wrap; }
.chip { border: 1px solid color-mix(in oklab, var(--text) 25%, transparent); background: var(--bg-elev); color: var(--text); padding: .4rem .8rem; border-radius: 999px; cursor: pointer; }
.chip.is-active, .chip:hover { border-color: var(--accent); color: var(--accent); }
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.project { background: var(--card); border-radius: var(--radius); overflow: clip; box-shadow: var(--shadow); display: grid; grid-template-rows: auto 1fr; }
.project img { width: 100%; height: 170px; object-fit: cover; }
.project-body { padding: 1rem; display: grid; gap: .6rem; }
.project-actions { display: flex; gap: .5rem; flex-wrap: wrap; }

/* Contact */
.contact-form .grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.contact-form label { display: grid; gap: .3rem; font-weight: 600; }
.contact-form input, .contact-form textarea {
    background: var(--bg-elev); color: var(--text); border: 1px solid color-mix(in oklab, var(--text) 20%, transparent);
    border-radius: 10px; padding: .7rem .8rem; outline: none; transition: border var(--speed), box-shadow var(--speed);
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 30%, transparent); }
.form-actions { display: flex; align-items: center; gap: .8rem; margin-top: .6rem; }
.form-hint { color: var(--muted); font-size: .9rem; }

/* Footer */
.site-footer { padding: 2rem 0; border-top: 1px solid color-mix(in oklab, var(--text) 10%, transparent); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; }
.back-to-top { display: grid; place-items: center; width: 40px; height: 40px; border: 1px solid color-mix(in oklab, var(--text) 20%, transparent); border-radius: 10px; text-decoration: none; color: var(--text); }

/* Modals natifs <dialog> */
.modal { border: none; border-radius: 16px; padding: 0; width: min(92vw, 680px); background: var(--card); color: var(--text); box-shadow: var(--shadow); }
.modal::backdrop { background: rgba(0,0,0,.6); backdrop-filter: blur(2px); }
.modal article { padding: 1rem; }
.modal header { display: flex; justify-content: space-between; align-items: center; margin-bottom: .5rem; }
.icon-btn { border: 1px solid color-mix(in oklab, var(--text) 20%, transparent); background: var(--bg-elev); color: var(--text); padding: .3rem .6rem; border-radius: 8px; cursor: pointer; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(14px) scale(.98); transition: opacity .7s ease, transform .7s ease; }
.reveal--visible { opacity: 1; transform: none; }

/* Toast */
#toast { position: fixed; left: 50%; bottom: 2rem; transform: translateX(-50%); background: var(--bg-elev); color: var(--text);
    border: 1px solid color-mix(in oklab, var(--text) 20%, transparent); padding: .7rem 1rem; border-radius: 12px; box-shadow: var(--shadow);
    opacity: 0; pointer-events: none; transition: opacity var(--speed), transform var(--speed);
}

/* Responsive */
@media (max-width: 800px) {
    .header-grid { grid-template-columns: auto auto 1fr; }
    .site-nav ul { justify-content: flex-start; flex-wrap: wrap; }
    .contact-form .grid { grid-template-columns: 1fr; }
    .hero-stats { grid-template-columns: 1fr 1fr 1fr; }
}

/* Focus visible */
:focus-visible { outline: none; box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 40%, transparent); border-radius: 10px; }

.hero-inner { transform: translateY(calc(var(--p, 0) * -10px)); transition: transform 300ms ease; }
.scroll-indicator { opacity: calc(1 - var(--p, 0)); transition: opacity 300ms ease; }


/* ===== Contact (modernisé) ===== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.2rem;
    margin-top: 2rem;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1rem 1.2rem;
    transition: transform var(--speed), box-shadow var(--speed), border var(--speed);
    border: 1px solid color-mix(in oklab, var(--text) 15%, transparent);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0,0,0,0.3);
    border-color: var(--accent);
}

.contact-card .icon {
    font-size: 1.8rem;
    color: var(--accent);
    flex-shrink: 0;
}

.contact-card h4 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
}

.contact-card a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color var(--speed);
    word-break: break-all;
}

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

.contact-cta {
    text-align: center;
    margin-top: 2.5rem;
}