/* ============================================
   Portfolio Robin Labarre — BTS SIO SISR
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=JetBrains+Mono:wght@300;400;500;600&display=swap');

:root {
    --bg: #0a0f0d;
    --bg-elevated: #11181512;
    --bg-card: #0f1613;
    --border: #1f2a24;
    --border-hover: #2d3d34;
    --text: #e8ede9;
    --text-muted: #7a8882;
    --text-dim: #4a5550;
    --accent: #4ade80;
    --accent-dim: #22c55e;
    --accent-glow: rgba(74, 222, 128, 0.15);
    --warn: #fbbf24;
    --serif: 'Fraunces', Georgia, serif;
    --mono: 'JetBrains Mono', ui-monospace, monospace;
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--mono);
    font-size: 14px;
    line-height: 1.7;
    font-weight: 400;
    min-height: 100vh;
    overflow-x: hidden;
    background-image:
        radial-gradient(at 20% 0%, rgba(74, 222, 128, 0.04) 0px, transparent 50%),
        radial-gradient(at 80% 100%, rgba(74, 222, 128, 0.03) 0px, transparent 50%);
    background-attachment: fixed;
}

/* Grain overlay pour la texture */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.04;
    z-index: 1;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ========== NAVIGATION ========== */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    background: rgba(10, 15, 13, 0.85);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.nav-logo {
    font-family: var(--serif);
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.nav-logo::before {
    content: '';
    display: inline-block;
    width: 9px;
    height: 9px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--accent-glow);
    animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.9); }
}

.nav-links {
    display: flex;
    gap: 0.25rem;
    list-style: none;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    padding: 0.5rem 0.9rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    letter-spacing: 0.02em;
}

.nav-links a:hover {
    color: var(--text);
    background: var(--bg-elevated);
}

.nav-links a.active {
    color: var(--accent);
    background: var(--bg-elevated);
}

/* ========== LAYOUT ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
    position: relative;
    z-index: 2;
}

.container-narrow {
    max-width: 850px;
}

/* ========== HERO (accueil) ========== */
.hero {
    padding: 5rem 0 4rem;
    position: relative;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-label::before {
    content: '';
    width: 20px;
    height: 1px;
    background: var(--accent);
}

.hero h1 {
    font-family: var(--serif);
    font-size: clamp(2.8rem, 7vw, 5.5rem);
    font-weight: 500;
    line-height: 1;
    letter-spacing: -0.035em;
    margin-bottom: 1.5rem;
}

.hero h1 em {
    font-style: italic;
    color: var(--accent);
    font-weight: 400;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.hero-meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.hero-meta-label {
    color: var(--text-dim);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.hero-meta-value {
    color: var(--text);
    font-size: 0.85rem;
}

/* ========== PAGE HEADER ========== */
.page-header {
    padding: 4rem 0 2rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 3rem;
}

.page-header-label {
    font-size: 0.75rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
}

.page-header h1 {
    font-family: var(--serif);
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 500;
    line-height: 1.05;
    letter-spacing: -0.025em;
    margin-bottom: 1rem;
}

.page-header p {
    color: var(--text-muted);
    max-width: 650px;
    line-height: 1.7;
}

/* ========== SECTIONS ========== */
.section {
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--serif);
    font-size: 1.75rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 1.75rem;
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.section-title::before {
    content: attr(data-num);
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 400;
    letter-spacing: 0;
}

/* ========== GRILLE / CARDS ========== */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.75rem;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.card-link:hover .card-title {
    color: var(--accent);
}

.card-tag {
    display: inline-block;
    font-size: 0.7rem;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.card-title {
    font-family: var(--serif);
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
    transition: color 0.2s ease;
    line-height: 1.25;
}

.card-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.72rem;
    color: var(--text-dim);
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.card-arrow {
    color: var(--accent);
    opacity: 0;
    transition: all 0.2s ease;
}

.card-link:hover .card-arrow {
    opacity: 1;
    transform: translateX(3px);
}

/* ========== Tuile de téléchargement ========== */
.card-download {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--accent);
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: all 0.2s ease;
}

.card-download svg {
    width: 14px;
    height: 14px;
    transition: transform 0.25s ease;
}

.card-link:hover .card-download svg {
    transform: translateY(2px);
}

.card-link[data-missing="true"] {
    cursor: not-allowed;
    opacity: 0.55;
}

.card-link[data-missing="true"] .card-download {
    color: var(--text-dim);
}

.card-link[data-missing="true"]:hover .card {
    transform: none;
    border-color: var(--border);
}

/* ========== COMPÉTENCES (tags) ========== */
.skills-block {
    margin-bottom: 2rem;
}

.skills-block h3 {
    font-family: var(--serif);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.85rem;
    color: var(--text);
}

.skills-block h3 span {
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 400;
    margin-right: 0.5rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tag {
    font-size: 0.75rem;
    color: var(--text);
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    transition: all 0.15s ease;
}

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

/* ========== RÉFÉRENTIEL BTS SIO — blocs ========== */
.bloc-comp {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}

.bloc-comp::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent);
    opacity: 0.6;
}

.bloc-comp-num {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
}

.bloc-comp h3 {
    font-family: var(--serif);
    font-size: 1.4rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: 1.25rem;
    line-height: 1.25;
}

.bloc-comp ul {
    list-style: none;
    display: grid;
    gap: 0.6rem;
}

.bloc-comp li {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.bloc-comp li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-size: 0.8rem;
}

/* ========== EXPÉRIENCES / TIMELINE ========== */
.timeline-item {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border);
    display: grid;
    grid-template-columns: 170px 1fr;
    gap: 2rem;
}

.timeline-item:last-child { border-bottom: none; }

.timeline-date {
    font-size: 0.75rem;
    color: var(--text-dim);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding-top: 0.25rem;
}

.timeline-content h3 {
    font-family: var(--serif);
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: 0.25rem;
}

.timeline-company {
    color: var(--accent);
    font-size: 0.8rem;
    margin-bottom: 0.85rem;
}

.timeline-content ul {
    list-style: none;
    display: grid;
    gap: 0.4rem;
}

.timeline-content ul li {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding-left: 1.25rem;
    position: relative;
    line-height: 1.55;
}

.timeline-content ul li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--accent);
}

@media (max-width: 640px) {
    .timeline-item { grid-template-columns: 1fr; gap: 0.5rem; }
}

/* ========== BOUTONS / CTA ========== */
.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.4rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-family: var(--mono);
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid var(--border);
    color: var(--text);
    background: var(--bg-card);
    cursor: pointer;
    letter-spacing: 0.02em;
}

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

.btn-primary {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
    font-weight: 500;
}

.btn-primary:hover {
    background: transparent;
    color: var(--accent);
}

/* ========== PAGES INDIVIDUELLES TP/MISSION ========== */
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 3rem;
    font-size: 0.8rem;
}

.article-meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.article-meta-label {
    font-size: 0.7rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.article-meta-value { color: var(--text); }

.prose h2 {
    font-family: var(--serif);
    font-size: 1.6rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin: 2.5rem 0 1rem;
    color: var(--text);
}

.prose h3 {
    font-family: var(--serif);
    font-size: 1.25rem;
    font-weight: 500;
    margin: 2rem 0 0.75rem;
    color: var(--text);
}

.prose p {
    margin-bottom: 1.1rem;
    color: var(--text);
    line-height: 1.75;
}

.prose ul, .prose ol {
    margin: 1rem 0 1.25rem 1.5rem;
    color: var(--text);
}

.prose li { margin-bottom: 0.5rem; line-height: 1.65; }

.prose code {
    background: var(--bg-card);
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.85em;
    color: var(--accent);
    border: 1px solid var(--border);
}

.prose pre {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.25rem;
    overflow-x: auto;
    margin: 1.25rem 0;
    font-size: 0.8rem;
    line-height: 1.6;
}

.prose pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: var(--text);
}

.prose blockquote {
    border-left: 2px solid var(--accent);
    padding: 0.25rem 0 0.25rem 1.25rem;
    margin: 1.25rem 0;
    color: var(--text-muted);
    font-family: var(--serif);
    font-style: italic;
    font-size: 1rem;
}

.prose img {
    max-width: 100%;
    border-radius: 6px;
    border: 1px solid var(--border);
    margin: 1.5rem 0;
}

/* ========== FOOTER ========== */
.footer {
    border-top: 1px solid var(--border);
    padding: 3rem 0 2rem;
    margin-top: 5rem;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-dim);
}

.footer a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-status::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-glow);
}

/* ========== ANIMATIONS ========== */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeUp 0.7s ease forwards;
    opacity: 0;
}

.fade-in.d1 { animation-delay: 0.1s; }
.fade-in.d2 { animation-delay: 0.25s; }
.fade-in.d3 { animation-delay: 0.4s; }
.fade-in.d4 { animation-delay: 0.55s; }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .nav-inner { padding: 1rem 1.25rem; flex-direction: column; gap: 1rem; align-items: flex-start; }
    .container { padding: 2rem 1.25rem; }
    .hero { padding: 2.5rem 0 2rem; }
    .hero-meta { gap: 1.25rem; }
}