/* ============================================
   style.css — Khalil Yahyaoui Portfolio
   Global styles shared across all pages
   ============================================ */

/* ─── FONTS (self-hosted, latin subset) ─── */
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 400 600; font-display: swap; src: url(assets/fonts/plex-sans.woff2) format('woff2'); }
@font-face { font-family: 'IBM Plex Sans'; font-style: italic; font-weight: 400; font-display: swap; src: url(assets/fonts/plex-sans-italic.woff2) format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url(assets/fonts/plex-mono-400.woff2) format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 500; font-display: swap; src: url(assets/fonts/plex-mono-500.woff2) format('woff2'); }

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

:root {
  --bg: #fbfaf7;
  --surface: #f2f0ea;
  --text: #1c1c1a;
  --muted: #5f5e58;
  --faint: #8c8a82;
  --rule: #e2dfd6;
  --link: #1f4e79;
  --link-hover: #0f2f4d;
  --ok: #2e7d4f;
  --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #161615;
    --surface: #1f1f1d;
    --text: #e8e6e1;
    --muted: #a9a69e;
    --faint: #7d7a73;
    --rule: #2e2d2a;
    --link: #8db8e0;
    --link-hover: #b5d2ee;
    --ok: #6cc28f;
  }
}

html { scroll-behavior: smooth; scroll-padding-top: 4rem; }
body {
  background: var(--bg); color: var(--text);
  font-family: var(--font-sans); font-size: 17px; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--link-hover); text-decoration-thickness: 2px; }

.wrap { max-width: 720px; margin: 0 auto; padding: 0 1.25rem; }

/* ─── i18n ─── */
[data-lang] { display: none; }
.lang-fr [data-lang="fr"] { display: revert; }
.lang-en [data-lang="en"] { display: revert; }

/* ─── TOP BAR ─── */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: var(--bg); border-bottom: 1px solid var(--rule);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-top: 0.8rem; padding-bottom: 0.8rem; }
.home { font-weight: 600; color: var(--text); text-decoration: none; }
.home:hover { color: var(--text); }
.topbar nav { display: flex; align-items: center; gap: 1.1rem; flex-wrap: wrap; font-size: 0.92rem; }
.topbar nav a { color: var(--muted); text-decoration: none; }
.topbar nav a:hover { color: var(--text); }

.lang-toggle { display: inline-flex; align-items: center; gap: 0.3rem; color: var(--faint); font-family: var(--font-mono); font-size: 0.8rem; }
.lang-btn { font: inherit; background: none; border: none; color: var(--faint); cursor: pointer; padding: 0.1rem; }
.lang-btn:hover { color: var(--text); }
.lang-btn.active { color: var(--text); font-weight: 500; text-decoration: underline; text-underline-offset: 3px; }

/* ─── INTRO ─── */
.intro { padding: 4.5rem 0 1rem; }
.intro h1 { font-size: 2.4rem; font-weight: 600; letter-spacing: -0.015em; line-height: 1.15; margin-bottom: 1rem; }
.lede { font-size: 1.15rem; color: var(--text); max-width: 36em; }
.status { margin-top: 1.1rem; font-size: 0.95rem; color: var(--muted); display: flex; align-items: center; gap: 0.55rem; }
.status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); flex-shrink: 0; }
.intro-links { list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem 1.4rem; margin-top: 1.4rem; font-size: 0.95rem; }

/* ─── SECTIONS ─── */
main section { padding: 2.75rem 0 0.5rem; }
main section + section { border-top: 1px solid var(--rule); margin-top: 2rem; }
h2 { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--faint); margin-bottom: 1.4rem; }
section > p + p { margin-top: 0.9rem; }

/* ─── ENTRIES (experience / projects / education) ─── */
.entry + .entry { margin-top: 2.25rem; }
.entry-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.entry h3 { font-size: 1.12rem; font-weight: 600; }
.entry-date { font-family: var(--font-mono); font-size: 0.82rem; color: var(--faint); white-space: nowrap; }
.entry-sub { color: var(--muted); font-size: 0.97rem; margin-bottom: 0.6rem; }
.entry ul { padding-left: 1.15rem; }
.entry li { margin-bottom: 0.4rem; }
.entry li::marker { color: var(--faint); }
.entry-stack { margin-top: 0.6rem; font-family: var(--font-mono); font-size: 0.8rem; color: var(--faint); }

/* ─── SKILLS ─── */
.skills { display: grid; grid-template-columns: 9.5rem 1fr; gap: 0.7rem 1.25rem; }
.skills dt { font-weight: 600; }
.skills dd { color: var(--muted); }

/* ─── FOOTER ─── */
footer { padding-top: 3rem; padding-bottom: 3rem; margin-top: 3rem; border-top: 1px solid var(--rule); font-size: 0.85rem; color: var(--faint); }

@media (max-width: 600px) {
  body { font-size: 16px; }
  .intro { padding-top: 2.5rem; }
  .intro h1 { font-size: 2rem; }
  .skills { grid-template-columns: 1fr; gap: 0.15rem; }
  .skills dd { margin-bottom: 0.7rem; }
}

/* ============================================
   PROJECT DETAIL PAGES
   ============================================ */

.back { display: inline-block; margin: 2.5rem 0 0; font-size: 0.92rem; }

.page-hero { padding: 3.5rem 0 1rem; }
.page-label { font-family: var(--font-mono); font-size: 0.82rem; color: var(--faint); margin-bottom: 0.5rem; }
.page-hero h1 { font-size: 2.1rem; font-weight: 600; letter-spacing: -0.015em; line-height: 1.2; margin-bottom: 0.9rem; }
.page-desc { font-size: 1.08rem; max-width: 36em; }
.page-meta { display: flex; flex-wrap: wrap; gap: 0.4rem 2rem; margin-top: 1.4rem; font-size: 0.92rem; color: var(--muted); }
.page-note { margin-top: 1rem; font-size: 0.85rem; color: var(--faint); font-style: italic; }
.page-meta strong { color: var(--text); font-weight: 500; }

.page-content section { padding-top: 2.5rem; }
.page-content h2 { margin-bottom: 1rem; }
.page-content p + p { margin-top: 0.9rem; }
.page-content ul { padding-left: 1.15rem; }
.page-content li { margin-bottom: 0.4rem; }
.page-content li::marker { color: var(--faint); }

.roles { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem 2rem; }
.roles h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.2rem; }
.roles p { color: var(--muted); font-size: 0.95rem; }

code { font-family: var(--font-mono); font-size: 0.88em; background: var(--surface); padding: 0.1em 0.35em; border-radius: 3px; }

.code-block { margin: 1.2rem 0; border: 1px solid var(--rule); border-radius: 6px; overflow: hidden; }
.code-filename { display: block; padding: 0.45rem 0.9rem; font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted); background: var(--surface); border-bottom: 1px solid var(--rule); }
.code-block pre { margin: 0; overflow-x: auto; background: #0d1117; }
.code-block pre code { display: block; font-family: var(--font-mono) !important; font-size: 0.82rem !important; line-height: 1.6 !important; padding: 1rem 1.1rem !important; background: transparent !important; border-radius: 0; color: #e6edf3; white-space: pre; }

.stack-note { margin-top: 1.2rem; }

.checklist { padding-left: 1.4rem; margin-top: 0.6rem; }

.screenshot-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.9rem; }
.screenshot-grid figure img { width: 100%; height: auto; display: block; border: 1px solid var(--rule); border-radius: 6px; }
.screenshot-grid figcaption { font-size: 0.82rem; color: var(--faint); margin-top: 0.35rem; }

@media (max-width: 600px) {
  .roles { grid-template-columns: 1fr; }
  .screenshot-grid { grid-template-columns: 1fr 1fr; }
}