/* =============================================================
   Aaron Gunasingh — Portfolio
   Warm editorial system. One accent color, no gradients, no glass.
   Vanilla CSS, dependency-free. Dark mode via [data-theme="dark"].
   ============================================================= */

:root {
  /* ---- Light (default) ---- */
  --bg: #f7f2e7;
  --bg-soft: #f0e8d6;
  --surface: #fffcf5;
  --line: rgba(28, 23, 18, 0.14);
  --line-soft: rgba(28, 23, 18, 0.08);
  --text: #1c1712;
  --text-soft: #3a332c;
  --muted: #6e6357;
  --accent: #bd4a2c;
  --accent-contrast: #fff8f0;
  --shadow: 0 20px 50px rgba(40, 25, 10, 0.10);
  --shadow-sm: 0 8px 22px rgba(40, 25, 10, 0.08);
  --radius: 20px;
  --radius-sm: 12px;
  --container: 1120px;
  --nav-height: 74px;
  --section-space: clamp(76px, 10vw, 148px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-sans: "Manrope", system-ui, sans-serif;
  --font-serif: "Fraunces", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

:root[data-theme="dark"] {
  --bg: #15110c;
  --bg-soft: #1b1610;
  --surface: #1e1810;
  --line: rgba(255, 255, 255, 0.11);
  --line-soft: rgba(255, 255, 255, 0.06);
  --text: #f2ebdd;
  --text-soft: #d9cfbf;
  --muted: #9c8f7c;
  --accent: #e2794f;
  --accent-contrast: #1a1208;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 8px 22px rgba(0, 0, 0, 0.3);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 300ms var(--ease), color 300ms var(--ease);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; }

::selection { background: rgba(189, 74, 44, 0.22); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
  transition: top 200ms var(--ease);
}
.skip-link:focus { top: 16px; }

/* Very quiet, static vignette — no motion, no color-shifting blobs */
.page-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 14% 8%, rgba(189, 74, 44, 0.07), transparent 32%),
    radial-gradient(circle at 88% 78%, rgba(28, 23, 18, 0.04), transparent 30%);
}
:root[data-theme="dark"] .page-glow {
  background:
    radial-gradient(circle at 14% 8%, rgba(226, 121, 79, 0.09), transparent 32%),
    radial-gradient(circle at 88% 78%, rgba(255, 255, 255, 0.03), transparent 30%);
}

.container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
.section { padding: var(--section-space) 0; }
.section-shell { display: grid; gap: 44px; }

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 230px) minmax(0, 1fr);
  gap: 24px;
  align-items: end;
}
.section-heading h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.4vw, 3.6rem);
  line-height: 1.06;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.section-kicker, .eyebrow {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

/* =============================================================
   Nav
   ============================================================= */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--container), calc(100% - 40px));
  height: var(--nav-height);
  margin: 16px auto 0;
  padding: 0 10px 0 18px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  box-shadow: 0 6px 20px rgba(20, 14, 6, 0.05);
  transition: box-shadow 220ms ease, background 220ms ease, border-color 220ms ease;
}
.site-nav.scrolled {
  background: color-mix(in srgb, var(--bg) 96%, transparent);
  border-color: var(--line);
  box-shadow: var(--shadow-sm);
}

.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent); color: var(--accent-contrast);
  font-family: var(--font-mono);
  font-size: 0.8rem; font-weight: 700;
}
.brand-text { font-size: 0.95rem; font-weight: 700; letter-spacing: -0.02em; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 9px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  transition: background 180ms ease, color 180ms ease;
}
.nav-link:hover, .nav-link.active { background: var(--bg-soft); color: var(--text); }
.nav-link--cta { background: var(--text); color: var(--bg); }
.nav-link--cta:hover { background: var(--accent); color: var(--accent-contrast); }

.theme-toggle {
  position: relative;
  width: 40px; height: 40px;
  margin-left: 4px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: border-color 200ms ease, background 200ms ease;
}
.theme-toggle:hover { background: var(--bg-soft); }
.theme-icon {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  transition: opacity 220ms ease, transform 260ms ease;
}
.theme-icon--sun { color: var(--accent); opacity: 1; }
.theme-icon--moon { color: var(--accent); opacity: 0; transform: translate(-50%, -50%) rotate(-70deg) scale(0.5); }
:root[data-theme="dark"] .theme-icon--sun { opacity: 0; transform: translate(-50%, -50%) rotate(70deg) scale(0.5); }
:root[data-theme="dark"] .theme-icon--moon { opacity: 1; transform: translate(-50%, -50%) rotate(0) scale(1); }

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0;
  width: 40px; height: 40px;
  border-radius: 50%;
  cursor: pointer;
  color: var(--text);
}
.nav-toggle span {
  display: block; width: 18px; height: 2px; margin: 0 auto 4px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}
.nav-toggle span:last-child { margin-bottom: 0; }
.nav-toggle.active span:first-child { transform: translateY(3px) rotate(45deg); }
.nav-toggle.active span:last-child { transform: translateY(-3px) rotate(-45deg); }

/* =============================================================
   Buttons + links
   ============================================================= */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 52px;
  padding: 0 22px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.94rem;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}
.button:hover { transform: translateY(-2px); }

.button--primary {
  background: var(--accent);
  color: var(--accent-contrast);
  box-shadow: 0 14px 28px rgba(189, 74, 44, 0.22);
}
.button--primary:hover { box-shadow: 0 18px 36px rgba(189, 74, 44, 0.3); }

.button--secondary {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
}
.button--secondary:hover { border-color: var(--accent); }

.button--ghost {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  min-height: 46px;
}
.button--ghost:hover { color: var(--text); border-color: var(--text); }
.button--ghost.copied { border-color: var(--accent); color: var(--accent); }

.text-link { font-weight: 700; color: var(--accent); }
.text-link:hover { text-decoration: underline; }

/* =============================================================
   Hero
   ============================================================= */
.hero { padding-top: 44px; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 40px;
  align-items: end;
}

.hero-copy h1 {
  margin: 16px 0 22px;
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7.6vw, 6.4rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  font-weight: 600;
  max-width: 12ch;
}
.hero-copy h1 span { color: var(--accent); }

.hero-intro { max-width: 54ch; margin: 0 0 30px; color: var(--muted); font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-panel { display: grid; gap: 16px; }

.portrait-card, .signal-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.portrait-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  align-items: center;
  padding: 16px;
}
.portrait { height: 150px; width: 100%; object-fit: cover; object-position: center 18%; border-radius: 12px; }
.portrait-role, .signal-label, .fact-label { margin: 0 0 6px; color: var(--muted); font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.14em; font-weight: 700; font-family: var(--font-mono); }
.portrait-value, .fact-value { margin: 0; font-size: 1.02rem; font-weight: 700; line-height: 1.35; }
.portrait-status { margin: 8px 0 0; font-size: 0.86rem; color: var(--muted); }
.portrait-status::before { content: "\25CF "; color: var(--accent); font-size: 0.6rem; vertical-align: middle; }

.signal-card { padding: 20px 22px; }
.signal-list { display: grid; gap: 12px; margin-top: 4px; }
.signal-list li { padding-top: 12px; border-top: 1px solid var(--line-soft); color: var(--text-soft); font-weight: 600; font-size: 0.94rem; }
.signal-list li:first-child { padding-top: 0; border-top: 0; }

/* =============================================================
   About
   ============================================================= */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: 28px;
  align-items: start;
}
.about-story { max-width: 62ch; }
.about-lead { margin: 0 0 18px; font-family: var(--font-serif); font-size: 1.32rem; line-height: 1.5; letter-spacing: -0.01em; font-weight: 500; }
.about-story p:last-child { margin-bottom: 0; color: var(--muted); }

.about-facts { display: grid; gap: 16px; }
.fact { padding: 18px 0; border-top: 1px solid var(--line); }
.fact:first-child { padding-top: 0; border-top: 0; }

/* =============================================================
   Experience — role / company / dates, then quantified bullets
   ============================================================= */
.experience-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.experience-entry { padding: 34px 0; border-bottom: 1px solid var(--line); }
.experience-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  margin-bottom: 18px;
}
.experience-header h3 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 600;
}
.experience-company { margin: 0; color: var(--accent); font-weight: 700; font-size: 0.94rem; }
.experience-meta {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  text-align: right;
  white-space: nowrap;
}
.experience-points { display: grid; gap: 12px; max-width: 74ch; }
.experience-points li {
  position: relative;
  padding-left: 20px;
  color: var(--text-soft);
}
.experience-points li::before {
  content: "";
  position: absolute; left: 0; top: 0.62em;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
}

/* =============================================================
   Projects — hairline rows, plain text stack (no pill badges)
   ============================================================= */
.project-list { display: grid; border-top: 1px solid var(--line); }
.project-row {
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr) minmax(180px, 0.42fr);
  gap: 24px;
  align-items: start;
  padding: 30px 4px;
  border-bottom: 1px solid var(--line);
  transition: background 200ms ease;
}
.project-row:hover { background: var(--bg-soft); }
.project-number { color: var(--accent); font-size: 0.82rem; font-weight: 700; font-family: var(--font-mono); padding-top: 4px; }
.project-main h3 { margin: 0 0 10px; font-family: var(--font-serif); font-size: 1.5rem; line-height: 1.08; letter-spacing: -0.02em; font-weight: 600; }
.project-main p { margin: 0; color: var(--muted); max-width: 62ch; }
.project-links { margin-top: 14px; }
.project-stack { margin: 0; padding-top: 4px; color: var(--muted); font-size: 0.82rem; font-family: var(--font-mono); text-align: right; }

.projects-note, .footer-note, .footer-year, .contact-copy p { color: var(--muted); }
.projects-note { margin: 22px 0 0; font-size: 0.95rem; }

/* =============================================================
   Contact
   ============================================================= */
.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 30px;
  padding: 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
}
.contact-card h2 { margin: 0; font-family: var(--font-serif); font-size: clamp(1.8rem, 3.6vw, 2.8rem); line-height: 1.1; letter-spacing: -0.03em; font-weight: 600; }
.contact-copy { display: grid; align-content: center; gap: 22px; }
.contact-copy p { margin: 0; max-width: 46ch; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* =============================================================
   Footer
   ============================================================= */
.site-footer { padding: 0 0 34px; }
.footer-layout { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 26px; border-top: 1px solid var(--line); }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-links a { font-weight: 700; }
.footer-links a:hover { color: var(--accent); }
.footer-year { font-family: var(--font-mono); font-size: 0.82rem; }

/* =============================================================
   Reveal (once, on scroll into view)
   ============================================================= */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 650ms var(--ease), transform 650ms var(--ease); }
.reveal.visible { opacity: 1; transform: none; }

/* =============================================================
   Responsive
   ============================================================= */
@media (max-width: 1040px) {
  :root { --section-space: 96px; }
  .hero-grid, .about-grid, .contact-card, .section-heading { grid-template-columns: 1fr; }
  .hero-copy h1 { max-width: none; }
  .project-row { grid-template-columns: 44px 1fr; }
  .project-stack { grid-column: 2; text-align: left; }
}

@media (max-width: 760px) {
  :root { --section-space: 76px; }
  .container, .site-nav { width: min(var(--container), calc(100% - 28px)); }
  .site-nav { padding: 0 8px 0 14px; }
  .brand-text { font-size: 0.86rem; }
  .nav-toggle { display: inline-block; }
  .nav-links {
    position: absolute;
    top: calc(100% + 10px); left: 0; right: 0;
    display: grid; gap: 6px;
    padding: 14px;
    border-radius: 22px;
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    opacity: 0; pointer-events: none; transform: translateY(-8px);
    transition: opacity 180ms ease, transform 180ms ease;
  }
  .nav-links.open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .nav-link { text-align: center; }
  .theme-toggle { margin: 6px auto 0; }

  .portrait-card { grid-template-columns: 1fr; }
  .portrait { height: 260px; }
  .experience-meta { text-align: left; }
  .project-row { grid-template-columns: 1fr; gap: 12px; }
  .project-number { padding-top: 0; }
  .project-stack { grid-column: auto; text-align: left; }
  .footer-layout { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 540px) {
  .hero-copy h1 { font-size: clamp(2.7rem, 17vw, 4rem); }
  .section-heading h2, .contact-card h2 { font-size: clamp(1.9rem, 11vw, 2.8rem); }
  .contact-card { padding: 26px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}