/* Aditia Muharam Hidayat — personal CV site */
:root {
  --bg: #faf8f5;
  --surface: #ffffff;
  --ink: #1d1a16;
  --muted: #6b655c;
  --line: #e8e2d8;
  --accent: #0f766e;
  --accent-dark: #0b5d58;
  --accent-soft: #e6f4f2;
  --hero-bg: #0e1513;
  --hero-ink: #f4f1ea;
  --hero-muted: #b9c4bf;
  --radius: 14px;
  --maxw: 1060px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: rgba(250, 248, 245, 0.88);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.brand { font-weight: 800; letter-spacing: 0.5px; text-decoration: none; color: var(--ink); font-size: 1.05rem; }
.brand span { color: var(--accent); }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 0.92rem; font-weight: 500; }
.nav-links a:hover { color: var(--accent-dark); }
.nav-cta {
  background: var(--accent); color: #fff !important; font-weight: 600 !important;
  padding: 8px 18px; border-radius: 999px;
}
.nav-cta:hover { background: var(--accent-dark); color: #fff !important; }

/* ---------- hero ---------- */
.hero {
  background: radial-gradient(1100px 480px at 50% -80px, rgba(15, 118, 110, 0.35), transparent 60%), var(--hero-bg);
  color: var(--hero-ink);
  padding: 150px 0 84px;
}
.eyebrow {
  display: inline-block; font-size: 0.8rem; font-weight: 700; letter-spacing: 2.5px;
  text-transform: uppercase; color: #7dd3c8; margin-bottom: 18px;
}
.hero h1 { font-size: clamp(2.4rem, 5.5vw, 3.9rem); line-height: 1.12; letter-spacing: -0.5px; font-weight: 800; }
.hero .tagline { font-size: 1.18rem; color: var(--hero-muted); margin-top: 18px; max-width: 640px; }
.hero .tagline strong { color: var(--hero-ink); font-weight: 600; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 22px; color: var(--hero-muted); font-size: 0.95rem; }
.hero-meta a { color: var(--hero-ink); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 26px; border-radius: 999px; font-weight: 650; font-size: 0.98rem;
  text-decoration: none; transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  border: 1px solid transparent; cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 22px rgba(15, 118, 110, 0.35); }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { border-color: rgba(244, 241, 234, 0.35); color: var(--hero-ink); }
.btn-ghost:hover { border-color: var(--hero-ink); background: rgba(255, 255, 255, 0.06); }
.btn-outline { border-color: var(--line); color: var(--ink); background: var(--surface); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent-dark); }

/* ---------- sections ---------- */
section.block { padding: 76px 0; }
section.block + section.block { border-top: 1px solid var(--line); }
.kicker { font-size: 0.8rem; font-weight: 700; letter-spacing: 2.5px; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
h2.title { font-size: clamp(1.6rem, 3vw, 2.15rem); letter-spacing: -0.3px; margin-bottom: 14px; }
.lead { color: var(--muted); max-width: 720px; font-size: 1.05rem; }
.section-head { margin-bottom: 36px; }

/* ---------- skills ---------- */
.skill-group { margin-bottom: 26px; }
.skill-group h3 { font-size: 1.02rem; margin-bottom: 12px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  background: var(--surface); border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 16px; font-size: 0.9rem; font-weight: 500;
}
.chip.hot { background: var(--accent-soft); border-color: #bfe3de; color: var(--accent-dark); font-weight: 650; }

/* ---------- timeline ---------- */
.timeline { position: relative; margin-top: 8px; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: var(--line);
}
.t-item { position: relative; padding-bottom: 34px; }
.t-item:last-child { padding-bottom: 0; }
.t-item::before {
  content: ""; position: absolute; left: -27px; top: 7px; width: 12px; height: 12px;
  border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft);
}
.t-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; }
.t-head h3 { font-size: 1.12rem; }
.t-date {
  margin-left: auto; font-size: 0.85rem; font-weight: 600; color: var(--accent-dark);
  background: var(--accent-soft); padding: 4px 14px; border-radius: 999px; white-space: nowrap;
}
.t-org { color: var(--muted); font-size: 0.95rem; margin: 2px 0 8px; }
.t-item ul { margin-left: 18px; color: #3d392f; font-size: 0.97rem; }
.t-item li { margin-bottom: 5px; }
.t-item li::marker { color: var(--accent); }

/* ---------- projects ---------- */
.proj-note {
  background: var(--surface); border: 1px dashed #c9bfae; border-radius: var(--radius);
  padding: 16px 20px; font-size: 0.94rem; color: var(--muted); margin-bottom: 28px;
}
.proj-note strong { color: var(--ink); }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; display: flex; flex-direction: column; gap: 12px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(29, 26, 22, 0.10); }
.card.featured { grid-column: 1 / -1; }
.card-top { display: flex; align-items: center; gap: 12px; }
.card h3 { font-size: 1.15rem; }
.badge {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
  background: var(--accent); color: #fff; padding: 4px 12px; border-radius: 999px;
}
.card p { font-size: 0.95rem; color: #3d392f; }
.card .learned { font-size: 0.9rem; color: var(--muted); border-left: 3px solid var(--accent-soft); padding-left: 12px; }
.card .learned strong { color: var(--accent-dark); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 6px; }
.tag { font-size: 0.78rem; font-weight: 600; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 3px 10px; color: var(--muted); }
.card-link { font-weight: 650; color: var(--accent-dark); text-decoration: none; font-size: 0.95rem; }
.card-link:hover { text-decoration: underline; }

/* ---------- education ---------- */
.edu-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: baseline;
}
.edu-card h3 { font-size: 1.2rem; }
.edu-card .gpa {
  margin-left: auto; font-size: 0.85rem; font-weight: 700; color: var(--accent-dark);
  background: var(--accent-soft); padding: 5px 16px; border-radius: 999px; white-space: nowrap;
}
.edu-card .thesis { width: 100%; color: var(--muted); font-size: 0.95rem; margin-top: 6px; }
.edu-card .thesis em { color: #3d392f; }

/* ---------- contact ---------- */
.contact { text-align: center; }
.contact .lead { margin: 0 auto; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 32px; }
.contact .btn { font-size: 1.02rem; padding: 15px 32px; }
.contact-meta { margin-top: 26px; color: var(--muted); font-size: 0.95rem; }
.contact-meta a { color: var(--accent-dark); font-weight: 600; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 0.88rem; }
footer .container { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }
footer a { color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  .nav-links a:not(.nav-cta) { display: none; }
  section.block { padding: 56px 0; }
  .hero { padding: 124px 0 64px; }
  .grid { grid-template-columns: 1fr; }
  .t-date { margin-left: 0; }
  .edu-card .gpa { margin-left: 0; }
}

@media print {
  .nav, .hero-actions, .contact-actions { display: none; }
  .hero { padding: 40px 0; }
}