:root {
  --bg-deep: #04081a;
  --bg-navy: #0a1638;
  --blue-mid: #1d4ed8;
  --blue-bright: #3b82f6;
  --blue-glow: #63a4ff;
  --cyan-glow: #38bdf8;
  --text-main: #eef3ff;
  --text-soft: #a3b3dc;
  --glass-fill: rgba(255, 255, 255, 0.055);
  --glass-fill-strong: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.15);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-main);
  background: var(--bg-deep);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  letter-spacing: -0.01em;
}

a { color: inherit; text-decoration: none; }

img { display: block; max-width: 100%; }

/* ---------- Background mesh + blobs ---------- */

.mesh-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 12% 8%, rgba(59, 130, 246, 0.28), transparent 42%),
    radial-gradient(circle at 88% 18%, rgba(56, 189, 248, 0.18), transparent 40%),
    radial-gradient(circle at 30% 85%, rgba(29, 78, 216, 0.32), transparent 50%),
    radial-gradient(circle at 80% 75%, rgba(99, 164, 255, 0.16), transparent 45%),
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-navy) 50%, var(--bg-deep) 100%);
}

.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 3px 3px;
  opacity: 0.4;
}

.blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(70px);
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
}

.blob-a {
  width: 460px; height: 460px;
  top: -140px; left: -120px;
  background: radial-gradient(circle, var(--blue-bright), transparent 70%);
  animation: drift-a 24s ease-in-out infinite;
}

.blob-b {
  width: 360px; height: 360px;
  bottom: -100px; right: -80px;
  background: radial-gradient(circle, var(--cyan-glow), transparent 70%);
  animation: drift-b 28s ease-in-out infinite;
}

.blob-c {
  width: 280px; height: 280px;
  top: 42%; left: 58%;
  background: radial-gradient(circle, var(--blue-mid), transparent 70%);
  animation: drift-c 32s ease-in-out infinite;
}

@keyframes drift-a { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(70px,90px) scale(1.12); } }
@keyframes drift-b { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-60px,-70px) scale(1.08); } }
@keyframes drift-c { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-50px,60px) scale(0.92); } }

/* ---------- Glass base ---------- */

.glass {
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-radius: 28px;
  box-shadow: 0 8px 32px rgba(3, 8, 24, 0.45), inset 0 1px 0 rgba(255,255,255,0.18);
  position: relative;
}

.glass::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,255,255,0.14), rgba(255,255,255,0) 45%);
  pointer-events: none;
}

/* ---------- Liquid Navigation ---------- */

.nav-wrap {
  position: sticky;
  top: 18px;
  z-index: 20;
  display: flex;
  justify-content: center;
  padding: 0 20px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 10px 14px 10px 26px;
  border-radius: 999px;
}

.nav-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--blue-glow);
  font-size: 0.95rem;
}

.nav-links {
  position: relative;
  display: flex;
  gap: 4px;
}

.liquid-indicator {
  position: absolute;
  top: 3px;
  bottom: 3px;
  left: 0;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--blue-bright), var(--cyan-glow));
  box-shadow: 0 4px 18px rgba(59, 130, 246, 0.55);
  transition:
    left 0.5s cubic-bezier(.34, 1.56, .64, 1),
    width 0.5s cubic-bezier(.34, 1.56, .64, 1),
    transform 0.4s cubic-bezier(.34, 1.56, .64, 1);
  z-index: 0;
  transform: scaleY(1);
}

.liquid-indicator.squish {
  transform: scaleY(0.82) scaleX(1.06);
}

.nav-link {
  position: relative;
  z-index: 1;
  padding: 9px 18px;
  font-size: 0.9rem;
  color: var(--text-soft);
  border-radius: 999px;
  transition: color 0.35s ease;
  white-space: nowrap;
}

.nav-link.active,
.nav-link:hover {
  color: #04122b;
  font-weight: 500;
}

/* before the indicator loads at hero, keep first link readable */
.nav-link.active { color: #04122b; }

/* ---------- Layout ---------- */

main {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 130px 0 40px;
  scroll-margin-top: 110px;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
  padding-top: 70px;
}

.eyebrow {
  color: var(--blue-glow);
  font-size: 0.95rem;
  margin-bottom: 18px;
}

.hero-text h1 {
  font-size: clamp(2.4rem, 5vw, 3.7rem);
  line-height: 1.08;
  margin-bottom: 22px;
}

.hero-text h1 span {
  background: linear-gradient(120deg, var(--blue-glow), var(--cyan-glow));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  color: var(--text-soft);
  font-size: 1.05rem;
  max-width: 46ch;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary, .btn-ghost {
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  display: inline-block;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-bright), var(--cyan-glow));
  color: #04122b;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.35);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(59, 130, 246, 0.45); }

.btn-ghost {
  border: 1px solid var(--glass-border);
  background: var(--glass-fill);
  color: var(--text-main);
  backdrop-filter: blur(14px);
}

.btn-ghost:hover { background: var(--glass-fill-strong); }

/* ---------- Hero photo: liquid blob frame ---------- */

.hero-photo { display: flex; justify-content: center; }

.blob-frame {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 3 / 4;
  padding: 10px;
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  box-shadow: 0 20px 50px rgba(3, 8, 24, 0.5), inset 0 1px 0 rgba(255,255,255,0.2);
  animation: blob-morph 12s ease-in-out infinite;
}

.blob-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: blob-morph 12s ease-in-out infinite;
}

@keyframes blob-morph {
  0%, 100% { border-radius: 42% 58% 63% 37% / 41% 47% 53% 59%; }
  33% { border-radius: 63% 37% 42% 58% / 55% 42% 58% 45%; }
  66% { border-radius: 48% 52% 38% 62% / 62% 44% 56% 38%; }
}

/* ---------- Panels / sections ---------- */

.panel { padding: 48px; border-radius: 32px; }

.panel-index {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  color: var(--cyan-glow);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.tentang p { color: var(--text-soft); max-width: 68ch; font-size: 1.05rem; }

section h2 { font-size: 1.9rem; }

.tentang h2, .kontak-panel h2 { margin-bottom: 18px; }

.section-head { margin-bottom: 32px; }

/* ---------- Skills ---------- */

.skill-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

.skill-card { padding: 30px; transition: transform 0.3s ease, border-color 0.3s ease; }

.skill-card:hover { transform: translateY(-4px); border-color: rgba(99, 164, 255, 0.4); }

.skill-card h3 { font-size: 1.1rem; margin-bottom: 10px; color: var(--blue-glow); }

.skill-card p { color: var(--text-soft); font-size: 0.96rem; }

/* ---------- Projects ---------- */

.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.project-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.project-card:hover { transform: translateY(-4px); border-color: rgba(56, 189, 248, 0.4); }

.project-tag {
  align-self: flex-start;
  font-size: 0.78rem;
  color: var(--cyan-glow);
  border: 1px solid rgba(56, 189, 248, 0.35);
  background: rgba(56, 189, 248, 0.08);
  padding: 4px 12px;
  border-radius: 999px;
}

.project-card h3 { font-size: 1.1rem; }

.project-card p { color: var(--text-soft); font-size: 0.95rem; }

/* ---------- Contact ---------- */

.kontak { padding-bottom: 100px; }

.kontak-panel { text-align: center; padding: 56px 40px; }

.kontak-panel p { color: var(--text-soft); margin-bottom: 28px; }

/* ---------- Footer ---------- */

footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 32px 24px 48px;
  color: var(--text-soft);
  font-size: 0.85rem;
}

/* ---------- Responsive ---------- */

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 40px; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-photo { order: -1; }
  .blob-frame { max-width: 220px; }
  .nav { gap: 12px; padding: 8px 8px 8px 18px; }
  .nav-brand { display: none; }
  .nav-link { padding: 8px 12px; font-size: 0.82rem; }
  .skill-grid, .project-grid { grid-template-columns: 1fr; }
  section { padding: 100px 0 20px; }
}

@media (max-width: 480px) {
  .panel { padding: 32px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  .blob, .blob-frame, .blob-frame img { animation: none; }
  .liquid-indicator { transition: none; }
  html { scroll-behavior: auto; }
}

:focus-visible {
  outline: 2px solid var(--blue-glow);
  outline-offset: 3px;
}