/* ============================================================
   MJ Chaker — personal site
   Modern CSS: custom properties, grid, clamp(), color-scheme,
   prefers-reduced-motion, light/dark theming.
   ============================================================ */

:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --bg-elev: #12151d;
  --bg-card: #151924;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8eaf0;
  --text-dim: #9aa3b5;
  --accent: #7c6cff;
  --accent-2: #21d4b4;
  --accent-3: #ff6b9d;
  --gradient: linear-gradient(120deg, var(--accent), var(--accent-2));
  --radius: 16px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f8fb;
  --bg-elev: #ffffff;
  --bg-card: #ffffff;
  --border: rgba(15, 20, 40, 0.1);
  --text: #171b26;
  --text-dim: #556070;
  --shadow: 0 20px 50px rgba(23, 27, 38, 0.1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: min(1100px, 92%); margin-inline: auto; }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--accent); color: #fff; padding: 0.6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; gap: 1.5rem; padding-block: 0.8rem; }
.brand { display: flex; align-items: center; gap: 0.55rem; font-weight: 800; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: grid; place-items: center;
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--gradient); color: #fff;
  font-size: 0.8rem; letter-spacing: 0.02em;
}
.nav-links { display: flex; gap: 1.4rem; list-style: none; margin-left: auto; }
.nav-links a { color: var(--text-dim); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-actions { display: flex; align-items: center; gap: 0.7rem; }

.icon-btn {
  display: grid; place-items: center;
  width: 36px; height: 36px; border-radius: 10px;
  border: 1px solid var(--border); background: transparent;
  color: var(--text); cursor: pointer;
}
.icon-btn:hover { background: var(--bg-elev); }
:root[data-theme="light"] .icon-moon { display: none; }
:root:not([data-theme="light"]) .icon-sun { display: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.7rem 1.4rem; border-radius: 12px;
  font-weight: 600; font-size: 0.95rem;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary {
  background: var(--gradient); color: #fff;
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 35%, transparent);
}
.btn-ghost { border-color: var(--border); color: var(--text); background: var(--bg-elev); }
.btn-sm { padding: 0.45rem 0.95rem; font-size: 0.85rem; }
.btn-lg { padding: 0.9rem 1.8rem; font-size: 1.05rem; }

/* ---------- hero ---------- */
.hero {
  display: grid; grid-template-columns: 1.15fr 1fr;
  gap: 3rem; align-items: center;
  padding-block: clamp(4rem, 10vh, 7rem);
  min-height: min(88vh, 820px);
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.85rem; font-weight: 600; color: var(--accent-2);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 0.35rem 0.9rem; margin-bottom: 1.4rem;
  background: var(--bg-elev);
}
.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-2);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-2) 50%, transparent); }
  50% { box-shadow: 0 0 0 7px transparent; }
}
h1 {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  line-height: 1.08; letter-spacing: -0.03em; font-weight: 800;
  margin-bottom: 1.2rem;
}
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.lede { font-size: 1.15rem; color: var(--text-dim); max-width: 34rem; margin-bottom: 2rem; }
.lede strong { color: var(--text); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 2.2rem; }

.social-row { display: flex; gap: 0.6rem; list-style: none; }
.social-link {
  display: grid; place-items: center;
  width: 42px; height: 42px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--bg-elev);
  color: var(--text-dim);
  transition: color 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}
.social-link:hover { color: var(--text); border-color: var(--accent); transform: translateY(-3px); text-decoration: none; }

/* hero visual */
.hero-visual { position: relative; display: grid; gap: 1.2rem; }
.orb {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.4;
  pointer-events: none; z-index: -1;
}
.orb-a { width: 320px; height: 320px; background: var(--accent); top: -60px; right: -40px; }
.orb-b { width: 260px; height: 260px; background: var(--accent-2); bottom: -50px; left: -30px; }

.code-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 1.2rem 1.4rem; transform: rotate(-1.5deg);
}
.code-dots { display: flex; gap: 6px; margin-bottom: 0.9rem; }
.code-dots span { width: 11px; height: 11px; border-radius: 50%; background: var(--border); }
.code-dots span:nth-child(1) { background: #ff5f57; }
.code-dots span:nth-child(2) { background: #febc2e; }
.code-dots span:nth-child(3) { background: #28c840; }
.code-card pre { font-family: var(--font-mono); font-size: 0.88rem; line-height: 1.7; overflow-x: auto; }
.c-kw { color: var(--accent-3); }
.c-var { color: var(--accent); }
.c-key { color: var(--text); }
.c-str { color: var(--accent-2); }

.eq-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 1.1rem 1.4rem; transform: rotate(1.2deg);
  display: flex; align-items: center; gap: 1rem;
}
.eq-card p { font-size: 0.85rem; color: var(--text-dim); }
.eq { display: flex; align-items: flex-end; gap: 3px; height: 34px; }
.eq span {
  width: 4px; border-radius: 2px; background: var(--gradient);
  animation: bounce 1.1s ease-in-out infinite;
}
.eq span:nth-child(odd) { animation-duration: 0.9s; }
.eq span:nth-child(3n) { animation-duration: 1.3s; }
.eq span:nth-child(4n) { animation-duration: 0.7s; }
@keyframes bounce {
  0%, 100% { height: 22%; }
  50% { height: 100%; }
}

/* ---------- sections ---------- */
.section { padding-block: clamp(4rem, 9vh, 6.5rem); }
.kicker {
  font-family: var(--font-mono); font-size: 0.8rem;
  color: var(--accent-2); letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 0.6rem;
}
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); letter-spacing: -0.02em; margin-bottom: 0.6rem; }
.section-head { margin-bottom: 2.5rem; }
.section-sub { color: var(--text-dim); max-width: 40rem; }

/* about */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 3rem; }
.about-copy p { margin-bottom: 1.1rem; color: var(--text-dim); font-size: 1.05rem; }
.about-copy p:first-child { color: var(--text); }
.about-facts {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.6rem;
}
.about-facts h3 { font-size: 0.95rem; margin-bottom: 0.8rem; }
.about-facts h3 + .chips, .about-facts h3 + .fact-list { margin-bottom: 1.5rem; }
.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; list-style: none; }
.chips li {
  font-size: 0.8rem; font-weight: 500;
  padding: 0.28rem 0.7rem; border-radius: 999px;
  border: 1px solid var(--border); background: var(--bg-elev); color: var(--text-dim);
}
.chips-sm li { font-size: 0.72rem; padding: 0.2rem 0.55rem; }
.fact-list { list-style: none; }
.fact-list li {
  position: relative; padding-left: 1.4rem;
  color: var(--text-dim); font-size: 0.92rem; margin-bottom: 0.55rem;
}
.fact-list li::before {
  content: "✓"; position: absolute; left: 0; color: var(--accent-2); font-weight: 700;
}

/* projects */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.4rem; }
.card {
  display: flex; flex-direction: column; gap: 0.8rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.6rem;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.card:hover { transform: translateY(-5px); border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); box-shadow: var(--shadow); }
.card-top { display: flex; align-items: center; justify-content: space-between; }
.card-icon { font-size: 1.6rem; }
.card-tag {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  padding: 0.2rem 0.6rem; border-radius: 999px;
}
.card h3 { font-size: 1.2rem; }
.card p { color: var(--text-dim); font-size: 0.95rem; flex-grow: 1; }
.card-link { font-weight: 600; font-size: 0.92rem; }
.card-links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem; }

/* music */
.music-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1.4rem; margin-bottom: 2rem; }
.music-embed {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.4rem;
}
.music-embed h3 { font-size: 1.05rem; margin-bottom: 0.9rem; }
.music-embed iframe { width: 100%; border: 0; border-radius: 12px; display: block; }
.music-links { display: flex; flex-wrap: wrap; gap: 0.8rem; }

/* contact */
.contact-panel {
  text-align: center;
  background:
    radial-gradient(600px 200px at 50% 0%, color-mix(in srgb, var(--accent) 18%, transparent), transparent),
    var(--bg-card);
  border: 1px solid var(--border); border-radius: 24px;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 5vw, 4rem);
}
.contact-panel .section-sub { margin-inline: auto; margin-bottom: 2rem; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }

/* footer */
.site-footer { border-top: 1px solid var(--border); padding-block: 1.6rem; margin-top: 3rem; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.footer-inner p { color: var(--text-dim); font-size: 0.88rem; }
.footer-inner .social-link { width: 36px; height: 36px; }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .eq span, .vinyl, .pulse-dot { animation: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; min-height: unset; padding-top: 3rem; }
  .hero-visual { max-width: 480px; }
  .about-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 480px) {
  .contact-actions .btn { width: 100%; }
}

/* ---------- blog ---------- */
.post-wrap { width: min(720px, 92%); margin-inline: auto; padding-block: 3rem 4rem; }
.post-header { margin-bottom: 2.2rem; }
.post-header h1 { font-size: clamp(1.9rem, 4.5vw, 2.6rem); margin-bottom: 0.7rem; }
.post-meta { color: var(--text-dim); font-size: 0.9rem; }
.post-content h1 { display: none; } /* body repeats the title; header owns it */
.post-content h2 { font-size: 1.45rem; margin: 2.2rem 0 0.8rem; letter-spacing: -0.01em; }
.post-content h3 { font-size: 1.15rem; margin: 1.6rem 0 0.6rem; }
.post-content p, .post-content li { color: var(--text-dim); font-size: 1.02rem; }
.post-content p { margin-bottom: 1rem; }
.post-content ul, .post-content ol { padding-left: 1.4rem; margin-bottom: 1rem; }
.post-content li { margin-bottom: 0.4rem; }
.post-content strong { color: var(--text); }
.post-content img { border-radius: 12px; border: 1px solid var(--border); margin: 1.2rem 0; }
.post-content hr { border: 0; border-top: 1px solid var(--border); margin: 2rem 0; }
.post-content mjx-container[display="true"] { overflow-x: auto; overflow-y: hidden; }
.back-link { font-weight: 600; font-size: 0.92rem; }
.post-list { display: grid; gap: 1.2rem; }
.post-card {
  display: block; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.4rem 1.6rem; color: inherit;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.post-card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); text-decoration: none; }
.post-card h3 { font-size: 1.15rem; margin-bottom: 0.35rem; }
.post-card .post-meta { margin-bottom: 0.5rem; }
.post-card p:last-child { color: var(--text-dim); font-size: 0.95rem; }

/* ---------- CV-sync additions ---------- */
.pull-quote {
  font-style: italic; color: var(--text);
  border-left: 3px solid var(--accent);
  padding-left: 1rem; margin: 1.3rem 0; font-size: 1.05rem;
}
.card-note {
  font-weight: 600; font-size: 0.92rem; color: var(--text-dim);
}