/* =============================================================
   Aris Wahyudiyanto — Portfolio Stylesheet
   Dark-first, light theme via [data-theme="light"]. Pure Vanilla CSS.
   ============================================================= */

:root {
  --bg: #0a0a0c;
  --bg-soft: #111114;
  --surface: #141418;
  --surface-2: #1b1b21;
  --surface-3: #22222a;
  --border: #26262e;
  --border-soft: #1f1f26;
  --text: #ececf1;
  --text-dim: #a1a1ad;
  --text-faint: #6b6b78;
  --brand-1: #7c6cff;
  --brand-2: #22d3ee;
  --brand-3: #f472b6;
  --grad: linear-gradient(120deg, var(--brand-1), var(--brand-2));
  --ring: rgba(124, 108, 255, .45);
  --shadow: 0 10px 40px -12px rgba(0, 0, 0, .6);
  --maxw: 1120px;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", var(--font-sans);
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

[data-theme="light"] {
  --bg: #fbfbfd;
  --bg-soft: #f2f2f6;
  --surface: #ffffff;
  --surface-2: #f4f4f8;
  --surface-3: #eaeaf0;
  --border: #e2e2ea;
  --border-soft: #ececf1;
  --text: #16161a;
  --text-dim: #55555f;
  --text-faint: #8a8a95;
  --brand-1: #6d5cff;
  --brand-2: #0ea5b7;
  --shadow: 0 12px 40px -16px rgba(20, 20, 40, .18);
  --ring: rgba(109, 92, 255, .3);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Ambient background: mouse spotlight + fixed glow */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(600px circle at var(--mx, 50%) var(--my, 0%), rgba(124, 108, 255, .12), transparent 60%),
    radial-gradient(800px circle at 100% 0%, rgba(34, 211, 238, .08), transparent 55%),
    radial-gradient(700px circle at 0% 100%, rgba(244, 114, 182, .07), transparent 55%);
  transition: background .2s ease;
}

/* subtle grain */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

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

.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 76%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.nav.scrolled { border-color: var(--border-soft); }
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -.02em;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo .mark {
  width: 26px; height: 26px;
  border-radius: 8px;
  background: var(--grad);
  display: grid; place-items: center;
  color: #fff; font-size: .8rem; font-weight: 800;
  box-shadow: 0 0 0 1px rgba(255,255,255,.08) inset;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-dim);
  padding: 8px 12px;
  border-radius: 8px;
  transition: color .15s ease, background .15s ease;
  display: inline-flex;
  align-items: center;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--surface-2); }
.nav-cta {
  font-size: .88rem;
  padding: 8px 16px !important;
  border: 1px solid var(--border);
  border-radius: 999px !important;
  color: var(--text) !important;
}
.nav-cta:hover { border-color: var(--brand-1); background: transparent !important; }

.badge-nav {
  display: inline-flex;
  align-items: center;
  font-size: .68rem;
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--grad);
  color: #ffffff;
  margin-left: 6px;
  line-height: 1.2;
}

.icon-btn {
  width: 38px; height: 38px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  color: var(--text);
  display: grid; place-items: center;
  cursor: pointer;
  font-size: 1rem;
  transition: border-color .15s ease, color .15s ease, transform .15s ease;
}
.icon-btn:hover { border-color: var(--brand-1); color: var(--brand-1); transform: scale(1.04); }

.nav-toggle { display: none; }

/* ---------- Layout / Sections ---------- */
main { position: relative; z-index: 1; }
section { padding: 90px 0; }
.section-kicker {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--brand-2);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-weight: 600;
}
.section-kicker::before {
  content: "";
  width: 24px; height: 1px;
  background: var(--brand-2);
  opacity: .6;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -.02em;
  margin-bottom: 16px;
}
.section-lead { color: var(--text-dim); max-width: 58ch; font-size: 1.02rem; line-height: 1.6; }

/* ---------- Hero ---------- */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-top: clamp(100px, 14vh, 140px);
  padding-bottom: 60px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 48px;
  align-items: center;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-dim);
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  margin-bottom: 20px;
}
.hero-badge .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 0 rgba(52, 211, 153, .6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, .55); }
  70% { box-shadow: 0 0 0 10px rgba(52, 211, 153, 0); }
  100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.3rem);
  line-height: 1.05;
  letter-spacing: -.03em;
  margin-bottom: 18px;
}
.hero h1 .line { display: block; padding-bottom: .04em; }
.hero-sub {
  font-size: 1.08rem;
  color: var(--text-dim);
  max-width: 50ch;
  margin-bottom: 16px;
  line-height: 1.6;
}
.hero-role {
  font-family: var(--font-mono);
  font-size: .92rem;
  color: var(--text);
  margin-bottom: 24px;
}
.hero-role .caret {
  display: inline-block;
  width: 9px;
  background: var(--brand-2);
  margin-left: 2px;
  animation: blink 1.1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: .92rem;
  padding: 11px 20px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, border-color .15s ease;
}
.btn-primary {
  background: var(--grad);
  color: #0a0a0c;
  box-shadow: 0 8px 24px -6px var(--ring);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px -6px var(--ring); }
.btn-ghost {
  border-color: var(--border);
  color: var(--text);
  background: var(--surface);
}
.btn-ghost:hover { border-color: var(--brand-1); transform: translateY(-2px); }
.btn-sm { padding: 7px 14px; font-size: .82rem; border-radius: 8px; }

/* Hero Tools Highlight Callout */
.hero-tools-card {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 16px;
  border-radius: 13px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  box-shadow: 0 4px 18px -4px rgba(124, 108, 255, .15);
  position: relative;
  overflow: hidden;
  transition: transform .15s ease, border-color .15s ease;
}
.hero-tools-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand-1);
}
.hero-tools-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(124, 108, 255, 0.08), rgba(34, 211, 238, 0.04));
  pointer-events: none;
}
.htc-left {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.htc-badge {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  color: var(--brand-2);
  text-transform: uppercase;
  letter-spacing: .08em;
}
.htc-left strong {
  font-size: .94rem;
  color: var(--text);
  font-family: var(--font-display);
}
.htc-left span:not(.htc-badge) {
  font-size: .8rem;
  color: var(--text-dim);
}

.socials { display: flex; gap: 10px; }
.socials a {
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  display: grid; place-items: center;
  color: var(--text-dim);
  background: var(--surface);
  transition: color .15s ease, border-color .15s ease, transform .15s ease;
}
.socials a:hover { color: var(--text); border-color: var(--brand-1); transform: translateY(-2px); }
.socials svg { width: 18px; height: 18px; fill: currentColor; }

/* hero portrait */
.hero-visual { position: relative; max-width: 420px; justify-self: center; width: 100%; }
.portrait {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
  aspect-ratio: 4 / 5;
  box-shadow: var(--shadow);
}
.portrait img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(.15) contrast(1.04); }
.portrait::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, color-mix(in srgb, var(--bg) 85%, transparent));
}
.hero-visual .glow {
  position: absolute;
  inset: -20px -20px auto auto;
  width: 200px; height: 200px;
  background: var(--grad);
  filter: blur(80px);
  opacity: .45;
  z-index: -1;
}
.float-card {
  position: absolute;
  left: -20px; bottom: 24px;
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-dim);
  box-shadow: var(--shadow);
}
.float-card b { color: var(--text); font-size: 1.05rem; display: block; font-family: var(--font-display); }

.scroll-hint {
  position: absolute;
  left: 28px; bottom: 24px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--text-faint);
  writing-mode: vertical-rl;
  display: flex;
  align-items: center;
  gap: 12px;
}
.scroll-hint::after { content: ""; width: 1px; height: 40px; background: linear-gradient(var(--text-faint), transparent); }

/* ---------- Marquee ---------- */
.marquee {
  border-block: 1px solid var(--border-soft);
  padding: 18px 0;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex;
  gap: 48px;
  width: max-content;
  animation: scroll-x 32s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-faint);
  display: flex; align-items: center; gap: 48px;
  white-space: nowrap;
}
.marquee-track span::after { content: "✦"; color: var(--brand-1); font-size: .85rem; }
@keyframes scroll-x { to { transform: translateX(-50%); } }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.about-grid p { color: var(--text-dim); margin-bottom: 14px; line-height: 1.65; }
.about-grid p strong { color: var(--text); }
.about-side {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  padding: 22px;
}
.about-side h4 {
  font-family: var(--font-mono);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--text-faint);
  margin-bottom: 12px;
}
.fact { display: flex; justify-content: space-between; gap: 14px; padding: 10px 0; border-top: 1px solid var(--border-soft); font-size: .9rem; }
.fact:first-of-type { border-top: 0; }
.fact span { color: var(--text-dim); }
.fact b { font-weight: 600; }

/* ---------- Bento Stats ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 36px;
}
.bento .cell {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  padding: 20px;
}
.bento .num {
  font-family: var(--font-display);
  font-size: 1.95rem;
  letter-spacing: -.02em;
  font-weight: 700;
}
.bento .lbl { font-size: .82rem; color: var(--text-dim); margin-top: 4px; }

/* ---------- Skills ---------- */
.skill-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.skill-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  padding: 20px;
}
.skill-card h4 { font-family: var(--font-display); font-size: 1.02rem; margin-bottom: 12px; }
.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  font-size: .8rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-2);
  transition: color .15s ease, border-color .15s ease;
}
.chip:hover { color: var(--text); border-color: var(--brand-1); }

/* ---------- Projects ---------- */
.projects-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.project {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 13px;
  overflow: hidden;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.project::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 1px;
  border-radius: inherit;
  background: var(--grad);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .2s ease;
  pointer-events: none;
}
.project:hover { transform: translateY(-3px); border-color: var(--brand-1); }
.project:hover::before { opacity: 1; }
.project.featured, .project.highlight { grid-column: span 2; }

.project.highlight {
  border-color: rgba(124, 108, 255, .35);
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
  box-shadow: 0 10px 30px -10px rgba(124, 108, 255, .15);
}

.project-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.project-icon {
  width: 42px; height: 42px;
  border-radius: 11px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: grid; place-items: center;
  color: var(--brand-1);
}
.project h3 { font-family: var(--font-display); font-size: 1.2rem; letter-spacing: -.01em; }
.project p { color: var(--text-dim); font-size: .92rem; flex: 1; line-height: 1.55; }
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.project-tags span {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text-faint);
  border: 1px solid var(--border-soft);
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--surface-2);
}
.project-links { display: flex; flex-wrap: wrap; gap: 14px; font-size: .88rem; font-weight: 600; margin-top: 2px; }
.project-links a { color: var(--brand-2); display: inline-flex; align-items: center; gap: 6px; }
.project-links a:hover { text-decoration: underline; }
.project-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: .78rem; color: var(--text-faint); font-family: var(--font-mono); }

.tool-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 6px 0;
}
.tool-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 7px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: .78rem;
  font-family: var(--font-mono);
  color: var(--text);
  transition: all .15s ease;
}
.tool-pill:hover {
  text-decoration: none;
  border-color: var(--brand-1);
  color: var(--brand-2);
  transform: translateY(-1px);
  background: var(--surface-3);
}

/* ---------- Contact ---------- */
.contact { text-align: center; }
.contact .section-kicker { justify-content: center; }
.contact .section-kicker::before { display: none; }
.contact h2 { font-family: var(--font-display); font-size: clamp(2rem, 5.5vw, 3.4rem); letter-spacing: -.02em; margin-bottom: 18px; }
.contact p { color: var(--text-dim); max-width: 48ch; margin: 0 auto 30px; font-size: 1.02rem; }
.contact .btn-row { justify-content: center; margin-bottom: 0; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 30px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: .84rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
}
.footer-inner a:hover { color: var(--text); }
.to-top { cursor: pointer; }

/* ---------- Reveal on Scroll ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s cubic-bezier(.2,.6,.2,1), transform .6s cubic-bezier(.2,.6,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive Breakpoints ---------- */
@media (max-width: 900px) {
  section { padding: 64px 0; }
  .container { padding: 0 20px; }
  .nav-inner { padding: 12px 20px; }
  .hero { min-height: auto; padding-top: 100px; padding-bottom: 44px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { max-width: 340px; margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .bento { grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 26px; }
  .projects-grid { grid-template-columns: 1fr; gap: 16px; }
  .project.featured, .project.highlight { grid-column: span 1; }
  .scroll-hint { display: none; }

  .nav-toggle { display: grid; }
  .nav-links {
    position: fixed;
    inset: 62px 14px auto 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 12px;
    box-shadow: var(--shadow);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { padding: 12px 14px; font-size: .95rem; }
  .nav-cta { text-align: center; }
}

@media (max-width: 600px) {
  section { padding: 48px 0; }
  .container { padding: 0 16px; }
  .nav-inner { padding: 10px 16px; }
  .hero { padding-top: 82px; padding-bottom: 32px; }
  .hero h1 { font-size: 2.3rem; margin-bottom: 14px; }
  .hero-sub { font-size: .98rem; }
  .hero-role { font-size: .88rem; margin-bottom: 20px; }
  .btn-row { flex-direction: column; width: 100%; gap: 10px; margin-bottom: 18px; }
  .btn { width: 100%; justify-content: center; }
  .hero-tools-card {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 14px;
  }
  .hero-tools-card .btn { width: 100%; }
  .float-card { left: 10px; bottom: 10px; padding: 8px 12px; }
  .float-card b { font-size: .95rem; }
  .bento { grid-template-columns: 1fr 1fr; gap: 8px; }
  .bento .cell { padding: 14px 12px; }
  .bento .num { font-size: 1.6rem; }
  .bento .lbl { font-size: .75rem; }
  .skill-cols { grid-template-columns: 1fr; gap: 12px; }
  .skill-card { padding: 18px 14px; }
  .project { padding: 18px 16px; }
  .tool-pill { font-size: .75rem; padding: 4px 8px; }
  .footer-inner { flex-direction: column; text-align: center; gap: 8px; }
}