/* ============================================================
   Arora-Sir.github.io - shared stylesheet
   Design system modeled directly on bikram-agarwal.github.io's actual
   source (cloned and read in full - not just what rendered): warm
   cream/tan/brown palette in light+dark, Inter type, avatar-in-hero
   layout, pill nav with a color-mix() press ripple, card hover-reveal
   affordance, and per-app full light+dark re-theming via one body
   class per page. Class names mirror his where the pattern is the
   same, so this stays traceable back to the source it's built from.
   ============================================================ */

:root {
  color-scheme: light dark;
  --bg: #f7f2ea;
  --surface: #fffaf3;
  --surface-strong: #f0e2d2;
  --text: #211a15;
  --muted: #6e5f53;
  --primary: #7a4d00;
  --primary-soft: #f5d9a8;
  --outline: #d7c3ae;
  --shadow: 0 18px 50px rgb(77 52 24 / 12%);
  --interactive-transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease,
    background-color 180ms ease;
  --press-ripple: radial-gradient(
    circle at center,
    color-mix(in srgb, var(--primary) 42%, white) 0%,
    color-mix(in srgb, var(--primary) 28%, transparent) 45%,
    transparent 72%
  );
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17120e;
    --surface: #211a15;
    --surface-strong: #30251e;
    --text: #f2e8df;
    --muted: #cab9a9;
    --primary: #ffc46b;
    --primary-soft: #5b3a00;
    --outline: #554437;
    --shadow: 0 18px 50px rgb(0 0 0 / 35%);
  }
}

/* ---------- Per-app themes (full light+dark token sets, not just one swapped variable) ---------- */

body.theme-tufhub {
  --bg: #eef6fa; --surface: #f8fcfe; --surface-strong: #dceaf2;
  --text: #12222b; --muted: #4d6b78;
  --primary: #1c7fb0; --primary-soft: #cde8f5; --outline: #b8d4e2;
  --shadow: 0 18px 50px rgb(20 60 80 / 13%);
}
body.theme-darq-reborn {
  --bg: #f5f1fb; --surface: #fbf9fe; --surface-strong: #e6ddf5;
  --text: #1e1730; --muted: #5f5670;
  --primary: #6d3fc2; --primary-soft: #e3d4f7; --outline: #cbb8e6;
  --shadow: 0 18px 50px rgb(60 30 90 / 13%);
}
body.theme-gravity-bridge {
  --bg: #eef9fa; --surface: #f7fdfd; --surface-strong: #d8eef0;
  --text: #112628; --muted: #4a6b6e;
  --primary: #0f7a8c; --primary-soft: #cdeef2; --outline: #b3dde1;
  --shadow: 0 18px 50px rgb(10 70 80 / 13%);
}
body.theme-copyclip {
  --bg: #f0f8ee; --surface: #f9fdf7; --surface-strong: #dcecd6;
  --text: #16250f; --muted: #4f6448;
  --primary: #2f7d3f; --primary-soft: #d5ecd0; --outline: #bcdab2;
  --shadow: 0 18px 50px rgb(30 70 30 / 13%);
}
body.theme-chatalytics-pro {
  --bg: #fbf0f5; --surface: #fff8fb; --surface-strong: #f4dbe8;
  --text: #2a121e; --muted: #6e4f5d;
  --primary: #b8356f; --primary-soft: #f6d6e5; --outline: #e2bdd0;
  --shadow: 0 18px 50px rgb(90 20 55 / 13%);
}
body.theme-movie-alert {
  --bg: #faf3e6; --surface: #fffbf3; --surface-strong: #f0dfbc;
  --text: #261d0c; --muted: #6b5c3f;
  --primary: #a8660a; --primary-soft: #f5e0b0; --outline: #ddc79a;
  --shadow: 0 18px 50px rgb(90 60 10 / 13%);
}

@media (prefers-color-scheme: dark) {
  body.theme-tufhub {
    --bg: #0c161b; --surface: #142129; --surface-strong: #1c2f38;
    --text: #e5f2f8; --muted: #a8c2cc;
    --primary: #7dd3fc; --primary-soft: #1a3a4a; --outline: #35505c;
    --shadow: 0 18px 50px rgb(0 0 0 / 38%);
  }
  body.theme-darq-reborn {
    --bg: #140f1e; --surface: #1e1729; --surface-strong: #2b2138;
    --text: #ede7f5; --muted: #c2b6d4;
    --primary: #c4a6ff; --primary-soft: #3a2a5c; --outline: #4d3d68;
    --shadow: 0 18px 50px rgb(0 0 0 / 38%);
  }
  body.theme-gravity-bridge {
    --bg: #0a1719; --surface: #132224; --surface-strong: #1b3134;
    --text: #e0f4f6; --muted: #a3c4c8;
    --primary: #7fe3f0; --primary-soft: #123a40; --outline: #2f4e52;
    --shadow: 0 18px 50px rgb(0 0 0 / 38%);
  }
  body.theme-copyclip {
    --bg: #0e1a0f; --surface: #172417; --surface-strong: #223321;
    --text: #e6f2e2; --muted: #b3cdac;
    --primary: #8ee0a0; --primary-soft: #1f3d22; --outline: #3b5539;
    --shadow: 0 18px 50px rgb(0 0 0 / 36%);
  }
  body.theme-chatalytics-pro {
    --bg: #1c0f16; --surface: #291822; --surface-strong: #382330;
    --text: #f5e2ec; --muted: #d0aec0;
    --primary: #f4a0c4; --primary-soft: #4a1f36; --outline: #5c3a4e;
    --shadow: 0 18px 50px rgb(0 0 0 / 38%);
  }
  body.theme-movie-alert {
    --bg: #1a1408; --surface: #261e10; --surface-strong: #362b17;
    --text: #f5ecd8; --muted: #cdb98f;
    --primary: #ffcc80; --primary-soft: #4a3512; --outline: #5c4a2a;
    --shadow: 0 18px 50px rgb(0 0 0 / 36%);
  }
}

/* ---------- Base ---------- */

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(circle at top left, var(--primary-soft), transparent 28rem),
    linear-gradient(135deg, var(--bg), var(--surface-strong));
  transition: background-color 220ms ease, color 220ms ease;
}

a { color: var(--primary); text-decoration: none; }
a, button, summary { -webkit-tap-highlight-color: transparent; }

.site-shell {
  display: flex;
  flex-direction: column;
  width: min(68rem, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 2rem 0.625rem 4rem;
}

/* ---------- Typography ---------- */

h1, h2, h3 { line-height: 1.15; }

h1 {
  max-width: 48rem;
  margin: 0;
  font-size: clamp(2.4rem, 8vw, 5rem);
  letter-spacing: -0.045em;
}

.tagline {
  max-width: 44rem;
  margin: 0.8rem 0 0;
  color: var(--text);
  font-size: clamp(1.35rem, 4vw, 2rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

h2 {
  margin: 1rem 0 1rem;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  letter-spacing: -0.03em;
}

.lede {
  max-width: 44rem;
  margin: 0.85rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

/* ---------- Nav / pills ---------- */

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0 0;
}

.page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 2.5rem;
}

.pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.6rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--outline);
  border-radius: 999px;
  color: var(--text);
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 650;
  overflow: hidden;
  transition: var(--interactive-transition);
}

.pill::after {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--press-ripple);
  content: "";
  opacity: 0;
  pointer-events: none;
  transform: scale(0.45);
  transition: opacity 180ms ease, transform 260ms ease;
}

.pill:active::after,
.mobile-site-menu summary:active::after {
  opacity: 0.28;
  transform: scale(1.8);
  transition-duration: 80ms;
}

.pill-icon {
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 0.25rem;
  object-fit: contain;
  filter: drop-shadow(0 1px 1px rgb(0 0 0 / 22%));
}

/* GitHub's mark is near-black - invert it on the filled primary pill so it stays visible,
   same treatment Bikram's site uses for the same reason. */
.pill.primary .pill-icon[src*="fav_github"] {
  filter: invert(1) drop-shadow(0 1px 1px rgb(0 0 0 / 30%));
}

.pill.primary {
  border-color: transparent;
  color: #fff;
  background: var(--primary);
  font-weight: 760;
}

@media (hover: hover) and (pointer: fine) {
  a.pill:hover {
    border-color: color-mix(in srgb, var(--primary) 46%, var(--outline));
    background: color-mix(in srgb, var(--surface) 94%, var(--primary-soft));
    box-shadow:
      0 0.65rem 1.45rem rgb(0 0 0 / 10%),
      0 0 1rem color-mix(in srgb, var(--primary) 9%, transparent);
    transform: translateY(-0.12rem);
  }
  a.pill.primary:hover {
    border-color: transparent;
    background: color-mix(in srgb, var(--primary) 88%, white);
  }
}

.pill:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 70%, white);
  outline-offset: 3px;
}

/* ---------- Hero (homepage: profile-hero; subpages: project-hero) ---------- */

.hero { padding: 3rem 0 2rem; }
.profile-hero { padding: 3.5rem 0 2.5rem; }
.project-hero { padding: 3.5rem 0 2.5rem; }

.profile-hero,
.project-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(1.5rem, 5vw, 3rem);
  align-items: start;
}

.profile-hero > .hero-copy,
.project-hero > .hero-copy { order: 1; }
.profile-hero > .hero-media,
.project-hero > .hero-media { order: 2; }

.hero-media {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-media .nav {
  flex-direction: column;
  align-items: stretch;
  width: min(15rem, 100%);
  margin-top: 1.25rem;
}

.hero-media .pill { justify-content: center; }

.avatar {
  width: clamp(8rem, 22vw, 13rem);
  aspect-ratio: 1;
  border: 1px solid var(--outline);
  border-radius: 2rem;
  object-fit: cover;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.app-logo {
  width: clamp(5.5rem, 16vw, 8.5rem);
  aspect-ratio: 1;
  border-radius: 1.75rem;
  object-fit: cover;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.app-logo.is-emoji {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.75rem;
  border: 1px solid var(--outline);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--outline);
  border-radius: 999px;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary-soft) 50%, transparent);
  font-size: 0.85rem;
  font-weight: 700;
}

.private-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 2rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--outline);
  border-radius: 999px;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  font-size: 0.85rem;
  font-weight: 650;
  cursor: help;
}

/* ---------- Content card (prose blocks: philosophy blurb, "why it exists") ---------- */

.content-card {
  max-width: 48rem;
  margin-top: 2rem;
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid var(--outline);
  border-radius: 1.5rem;
  background:
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--primary-soft) 32%, var(--surface)),
      color-mix(in srgb, var(--surface) 96%, transparent) 48%
    );
  box-shadow: var(--shadow);
  transition: var(--interactive-transition);
}

.content-card p { margin: 0; color: var(--muted); }
.content-card h2 { margin-top: 0; }

/* ---------- Project cards ---------- */

.projects-section { padding-top: 2.5rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15.5rem, 1fr));
  gap: 1.25rem;
  margin: 1.25rem 0 0;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 13rem;
  padding: 1.5rem;
  border: 1px solid var(--outline);
  border-radius: 1.5rem;
  color: var(--text);
  text-decoration: none;
  background:
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--primary-soft) 30%, var(--surface)),
      color-mix(in srgb, var(--surface) 96%, transparent) 48%
    );
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: var(--interactive-transition);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-height: 3rem;
  margin-bottom: 1rem;
}

.card-logo {
  flex: 0 0 auto;
  width: 3rem;
  height: 3rem;
  border-radius: 0.9rem;
  object-fit: cover;
  background: var(--surface-strong);
  transition: transform 180ms ease;
}

.card-logo.is-emoji {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  border: 1px solid var(--outline);
}

.card-title-group {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 0.35rem;
}

.card h3 { margin: 0; font-size: 1.2rem; }

.card p {
  margin: 0;
  color: var(--muted);
  flex: 1;
}

.card-badge {
  display: inline-flex;
  width: fit-content;
  padding: 0.3rem 0.6rem;
  border: 1px solid color-mix(in srgb, var(--primary) 34%, transparent);
  border-radius: 999px;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary-soft) 42%, transparent);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.card::after {
  margin-top: 1rem;
  color: var(--primary);
  content: "Open project \2192";
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  opacity: 0;
  text-transform: uppercase;
  transform: translateY(0.35rem);
  transition: opacity 180ms ease, transform 180ms ease;
}

.card:hover,
.card:focus-visible {
  border-color: color-mix(in srgb, var(--primary) 55%, var(--outline));
  background: color-mix(in srgb, var(--surface) 96%, var(--primary-soft));
  box-shadow:
    0 1.3rem 3.2rem rgb(0 0 0 / 14%),
    0 0 2rem color-mix(in srgb, var(--primary) 16%, transparent);
  transform: translateY(-0.2rem);
}

.card:hover::after,
.card:focus-visible::after { opacity: 1; transform: translateY(0); }

.card:hover .card-logo,
.card:focus-visible .card-logo { transform: translateY(-0.1rem) scale(1.04); }

/* ---------- Feature grid (subpage highlights) ---------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1.1rem;
  margin: 2rem 0 3rem;
}

.feature-card {
  padding: 1.35rem;
  border: 1px solid var(--outline);
  border-radius: 1.25rem;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  transition: var(--interactive-transition);
}

.feature-card:hover {
  border-color: color-mix(in srgb, var(--primary) 34%, var(--outline));
  background: color-mix(in srgb, var(--surface) 95%, var(--primary-soft));
}

.feature-card .feature-icon { font-size: 1.4rem; margin-bottom: 0.6rem; }
.feature-card h3 { font-size: 1rem; margin-bottom: 0.4rem; }
.feature-card p { margin: 0; color: var(--muted); font-size: 0.9rem; }

/* ---------- CTA row (subpage action links) ---------- */

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

/* ---------- Mobile hamburger menu (zero-dependency, matches Bikram's <details> technique) ---------- */

.mobile-site-menu { display: none; }

.mobile-site-menu summary {
  position: relative;
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid color-mix(in srgb, var(--outline) 80%, transparent);
  border-radius: 999px;
  place-items: center;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  box-shadow: 0 0.45rem 1rem rgb(0 0 0 / 10%);
  cursor: pointer;
  list-style: none;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

.mobile-site-menu summary::-webkit-details-marker { display: none; }

.mobile-site-menu summary::after {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--press-ripple);
  content: "";
  opacity: 0;
  pointer-events: none;
  transform: scale(0.45);
  transition: opacity 180ms ease, transform 260ms ease;
}

.menu-icon { display: grid; width: 1.15rem; gap: 0.22rem; }
.menu-icon span {
  display: block;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
  transition: opacity 160ms ease, transform 160ms ease;
}

.mobile-site-menu[open] summary {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 60;
  border-color: color-mix(in srgb, var(--primary) 38%, var(--outline));
  background: var(--surface);
}

.mobile-site-menu[open] .menu-icon span:nth-child(1) { transform: translateY(0.32rem) rotate(45deg); }
.mobile-site-menu[open] .menu-icon span:nth-child(2) { opacity: 0; }
.mobile-site-menu[open] .menu-icon span:nth-child(3) { transform: translateY(-0.32rem) rotate(-45deg); }

.mobile-menu-panel {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  align-content: start;
  padding: 5.25rem 1rem 1.5rem;
  background: color-mix(in srgb, var(--bg) 88%, rgb(0 0 0 / 28%));
  backdrop-filter: blur(18px);
}

.mobile-menu-links {
  display: grid;
  width: min(100%, 22rem);
  margin-inline: auto;
  overflow: hidden;
  border: 1px solid var(--outline);
  border-radius: 1.5rem;
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  box-shadow: var(--shadow);
}

.mobile-menu-links a {
  display: flex;
  min-height: 3.5rem;
  align-items: center;
  padding: 0.9rem 1.2rem;
  border-bottom: 1px solid color-mix(in srgb, var(--outline) 70%, transparent);
  color: var(--text);
  font-size: 1.02rem;
  font-weight: 700;
  text-decoration: none;
}

.mobile-menu-links a:last-child { border-bottom: 0; }
.mobile-menu-links a.current { color: var(--primary); background: color-mix(in srgb, var(--primary-soft) 44%, transparent); }

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

.site-footer {
  margin-top: auto;
  padding-top: 3rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer a { color: var(--primary); font-weight: 600; }

/* ---------- View transitions (progressive enhancement, ignored gracefully where unsupported) ---------- */

@view-transition { navigation: auto; }

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 240ms;
  animation-timing-function: cubic-bezier(0.2, 0, 0, 1);
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root) { animation-duration: 1ms; }
}

/* ---------- Mobile ---------- */

@media (max-width: 42rem) {
  .desktop-site-nav { display: none; }

  .mobile-site-menu { display: block; margin: 0 0 1rem; }

  .page-nav { display: none; }

  .profile-hero,
  .project-hero { grid-template-columns: 1fr; }

  .profile-hero { padding-bottom: 1rem; }

  .avatar { width: clamp(8rem, 40vw, 9.5rem); border-radius: 1.75rem; }
  .app-logo { width: clamp(6rem, 32vw, 7.5rem); }

  .hero-media .nav { width: min(14rem, 100%); margin-top: 1rem; }

  .projects-section { padding-top: 1rem; }
  .grid { gap: 1rem; }
  .card { padding: 1.35rem; }
  .card::after { display: none; }
}