/* ========================================================
   main.css — Styles globaux du site.
   ======================================================== */

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    transition: background .25s ease, color .25s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Containers */
.container {
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 1.25rem;
}

.container-narrow {
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

main {
    flex: 1;
    padding: 2rem 0 5rem;
}

/* Typographie */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: var(--text);
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin-bottom: 1.25rem; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin: 2.5rem 0 1rem; }
h3 { font-size: 1.25rem; margin: 1.5rem 0 0.5rem; }
p { margin-bottom: 1rem; color: var(--text-muted); max-width: var(--max-w-text); }
.lead { font-size: 1.15rem; color: var(--text); }

a {
    color: var(--accent);
    transition: opacity .15s ease;
}
a:hover { opacity: .8; }

code, .mono { font-family: var(--font-mono); font-size: 0.92em; }

/* Header / navigation */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 600;
    color: var(--text);
    font-size: 1rem;
}
.brand-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 0 var(--accent-glow);
    animation: pulse 2.4s infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
    50%      { box-shadow: 0 0 0 6px transparent; }
}

.nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.nav-link {
    padding: 0.4rem 0.7rem;
    border-radius: 6px;
    font-size: 0.92rem;
    color: var(--text-muted);
    transition: color .15s, background .15s;
}
.nav-link:hover, .nav-link.is-active {
    color: var(--text);
    background: var(--accent-soft);
}

.theme-toggle {
    display: inline-grid;
    place-items: center;
    width: 36px; height: 36px;
    border-radius: 8px;
    color: var(--text-muted);
    border: 1px solid var(--border);
    margin-left: 0.5rem;
}
.theme-toggle:hover { color: var(--text); border-color: var(--accent); }
.theme-toggle svg { width: 18px; height: 18px; }

.nav-toggle {
    display: none;
    width: 36px; height: 36px;
    margin-left: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
}

@media (max-width: 760px) {
    .nav-toggle { display: inline-grid; place-items: center; }
    .nav {
        position: fixed;
        top: 64px; left: 0; right: 0;
        background: var(--bg-elevated);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 1rem;
        gap: 0.25rem;
        transform: translateY(-110%);
        transition: transform .25s ease;
    }
    .nav.is-open { transform: translateY(0); }
    .nav-link { width: 100%; padding: 0.7rem 0.9rem; }
    .theme-toggle { margin-left: 0; align-self: stretch; width: auto; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.1rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.95rem;
    border: 1px solid var(--border);
    color: var(--text);
    background: var(--bg-elevated);
    transition: transform .12s, background .15s, border-color .15s;
}
.btn:hover { transform: translateY(-1px); border-color: var(--accent); }
.btn-primary {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
    font-weight: 600;
}
.btn-primary:hover { background: var(--accent); opacity: 0.9; }
.btn-ghost { background: transparent; }

/* Hero */
.hero {
    padding: 3rem 0 1rem;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 3rem;
    align-items: center;
}
@media (max-width: 880px) {
    .hero-grid { grid-template-columns: 1fr; gap: 1.5rem; }
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    line-height: 1.05;
}
.hero-title em {
    font-style: normal;
    color: var(--accent);
}
.hero-sub {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin: 1rem 0 1.5rem;
    max-width: 38ch;
}
.hero-actions {
    display: flex; gap: 0.6rem; flex-wrap: wrap;
}
.hero-meta {
    margin-top: 1.8rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.4rem;
    font-size: 0.9rem;
    color: var(--text-dim);
}
.hero-meta span::before {
    content: "•";
    margin-right: 0.6rem;
    color: var(--accent);
}

/* Sections */
.section {
    padding: 3rem 0;
}
.section-title {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 2rem;
}
.section-title h2 { margin: 0; }
.section-title .num {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
}
.section-intro { color: var(--text-muted); margin-bottom: 2rem; max-width: 62ch; }

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.4rem;
    transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); }
.card h3 { margin: 0 0 0.4rem; }
.card .summary { color: var(--text-muted); font-size: 0.95rem; }

.grid {
    display: grid;
    gap: 1.2rem;
}
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 760px) {
    .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }
}

.tag {
    display: inline-block;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-family: var(--font-mono);
    background: var(--accent-soft);
    color: var(--accent);
    margin: 0.2rem 0.25rem 0.2rem 0;
}

/* About / longue lecture */
.prose {
    max-width: 70ch;
    color: var(--text);
}
.prose p { margin-bottom: 1rem; color: var(--text); }
.prose strong { color: var(--accent); font-weight: 600; }

/* Skills */
.skill-group { margin-bottom: 2rem; }
.skill-group h3 {
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 0.8rem;
}
.skill-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.7rem 0;
    border-bottom: 1px dashed var(--border);
    font-size: 0.95rem;
}
.skill-row:last-child { border-bottom: 0; }
.skill-level {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-muted);
}
.skill-level.lvl-4 { color: var(--accent); }
.skill-level.lvl-3 { color: var(--text); }
.skill-level.lvl-2 { color: var(--warn); }

/* Certifications */
.cert-list { display: grid; gap: 1rem; }
.cert {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1rem 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    gap: 1rem;
    flex-wrap: wrap;
}
.cert.in-progress {
    border-style: dashed;
    opacity: 0.85;
}
.cert .name { font-weight: 600; color: var(--text); }
.cert .meta {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}
.cert .badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.3rem 0.55rem;
    border-radius: 4px;
    background: var(--accent-soft);
    color: var(--accent);
    white-space: nowrap;
}
.cert.in-progress .badge {
    background: rgba(255,180,84,.12);
    color: var(--warn);
}

/* "L'IA et moi" — prompt cards */
.prompt-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.prompt-card h3 { margin-bottom: 0.8rem; }
.prompt-card pre {
    background: var(--bg);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    color: var(--text);
    white-space: pre-wrap;
    margin: 0.8rem 0;
}
.prompt-card .label {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--accent);
    margin-top: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.prompt-card .label.warn { color: var(--warn); }

/* Forms */
.form-row { display: grid; gap: 0.4rem; margin-bottom: 1.2rem; }
.form-row label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.form-row input,
.form-row textarea {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.7rem 0.9rem;
    color: var(--text);
    font-family: var(--font-sans);
    transition: border-color .15s, background .15s;
}
.form-row input:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--bg);
}
.form-row textarea { min-height: 140px; resize: vertical; }
.form-row.honeypot { position: absolute; left: -9999px; }

.flash {
    padding: 0.9rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.4rem;
    font-size: 0.95rem;
}
.flash.ok {
    background: var(--accent-soft);
    color: var(--accent);
    border: 1px solid var(--accent);
}
.flash.err {
    background: rgba(255,93,108,.10);
    color: var(--danger);
    border: 1px solid var(--danger);
}

/* Footer */
.site-footer {
    margin-top: auto;
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.88rem;
}
.site-footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}
.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--accent); }

/* Skip link */
.skip-link {
    position: absolute;
    top: -100px; left: 0;
    background: var(--accent);
    color: var(--bg);
    padding: 0.5rem 1rem;
    z-index: 100;
}
.skip-link:focus { top: 0; }

/* Hidden SEO content (visible aux moteurs, pas à l'œil) */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* Page intro */
.page-head { margin: 1rem 0 2.5rem; }
.page-head h1 { margin-bottom: 0.6rem; }
.page-head .sub { color: var(--text-muted); font-size: 1.05rem; }

/* Linkedin pill */
.pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.pill:hover { color: var(--accent); border-color: var(--accent); }