:root {
  --ink: #0f172a;
  --muted: #64748b;
  --paper: #f8fafc;
  --line: rgba(15, 23, 42, 0.12);
  --blue: #2563eb;
  --cyan: #0891b2;
  --amber: #d97706;
  --green: #16a34a;
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 18%, rgba(8, 145, 178, 0.12), transparent 30%),
    radial-gradient(circle at 88% 12%, rgba(217, 119, 6, 0.12), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, var(--paper) 48%, #eef6f9 100%);
  font-family: "Inter", "Noto Sans Thai", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.glass {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.09);
  backdrop-filter: blur(18px);
}

.nav-link {
  color: #475569;
  transition: color 180ms ease, background 180ms ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--ink);
  background: rgba(37, 99, 235, 0.08);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.soft-card {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.07);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid rgba(15, 23, 42, 0.1);
  background: rgba(255, 255, 255, 0.74);
  color: #334155;
  font-weight: 700;
}

.timeline-line {
  background: linear-gradient(180deg, var(--blue), var(--cyan), var(--amber));
}

.metric {
  border-left: 3px solid var(--blue);
}

.project-cover {
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.92), rgba(8, 145, 178, 0.9)),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.16) 0 1px, transparent 1px 14px);
}

.code-panel {
  background: #0f172a;
  color: #dbeafe;
}

.focus-ring:focus {
  outline: 3px solid rgba(37, 99, 235, 0.35);
  outline-offset: 3px;
}

@media print {
  .no-print {
    display: none !important;
  }

  body {
    background: white;
  }

  .glass,
  .soft-card {
    box-shadow: none;
    border-color: #cbd5e1;
  }
}