/* ==========================================================================
   Keval Patel - landing page. Dark mode only: deep navy with a light blue
   accent, over the animated emoji field (field.js). Mobile first.
   ========================================================================== */
:root {
  --bg: #07111c;                     /* keep in sync with BG in field.js */
  --surface: rgba(13, 26, 41, 0.86);
  --surface-hover: rgba(18, 35, 55, 0.95);
  --line: rgba(159, 210, 255, 0.10);
  --line-strong: rgba(159, 210, 255, 0.18);
  --text: #e8f1fa;
  --muted: #95a9bd;
  --faint: #5f7489;
  --accent: #7cc4ff;                 /* light blue */
  --accent-strong: #a6d7ff;
  --accent-ink: #04121f;
  --accent-tint: rgba(124, 196, 255, 0.12);
  --accent-glow: rgba(124, 196, 255, 0.28);
  --term-bg: #040b13;
  --green: #4ade80;
  --radius: 14px;
  --sans: "Space Grotesk", "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --gutter: max(20px, env(safe-area-inset-left));
  color-scheme: dark; /* dark form controls and scrollbars regardless of OS setting */
}

*, *::before, *::after { box-sizing: border-box; }
/* No background on <html>: body's color must become the page canvas so the fixed
   emoji field (z-index -2) shows above it instead of being covered by the body box. */
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: rgba(124, 196, 255, 0.35); color: #fff; }
h1, h2, h3, p { margin: 0; }
a { color: inherit; }
img { display: block; max-width: 100%; }
.accent { color: var(--accent); }
.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.skip { position: absolute; left: -999px; top: 8px; }
.skip:focus { left: 8px; z-index: 100; padding: 8px 12px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* --- background: animated emoji field under a navy veil ----------------------- */
#field {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  display: block;
  opacity: 0;
  transition: opacity 1.2s ease;
}
#field.ready { opacity: 1; }
.veil {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 640px at 20% 40%, rgba(7, 17, 28, 0.94), rgba(7, 17, 28, 0.62) 72%),
    radial-gradient(700px 500px at 85% 25%, rgba(124, 196, 255, 0.07), transparent 70%),
    rgba(7, 17, 28, 0.5);
}

/* --- buttons ------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: rgba(7, 17, 28, 0.7);
  color: var(--text);
  font-weight: 600;
  font-size: 0.97rem;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.btn:hover { transform: translateY(-2px); border-color: var(--accent); background: var(--surface-hover); }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 10px 30px -10px var(--accent-glow);
}
.btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); box-shadow: 0 14px 36px -10px var(--accent-glow); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 0.9rem; border-radius: 10px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

/* --- nav ----------------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(7, 17, 28, 0.8);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 24px; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 700; text-decoration: none; letter-spacing: -0.01em; }
.brand-box {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: var(--surface);
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
}
.nav nav { display: none; margin-left: auto; gap: 4px; }
.nav nav a { padding: 8px 14px; border-radius: 10px; color: var(--muted); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
.nav nav a:hover { color: var(--text); }
.nav nav a.active { color: var(--text); background: rgba(159, 210, 255, 0.08); }
.nav .btn-sm { margin-left: auto; }

/* --- section labels ------------------------------------------------------------ */
.label {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}
.label-num { color: rgba(124, 196, 255, 0.55); }
.label-line { width: 34px; height: 1px; background: rgba(124, 196, 255, 0.4); }

/* --- hero ---------------------------------------------------------------------- */
.hero { display: grid; gap: 48px; padding-top: 64px; padding-bottom: 40px; }
.prompt { margin-top: 26px; font-family: var(--mono); font-size: 0.9rem; color: var(--muted); }
.hero h1 {
  margin-top: 14px;
  font-size: clamp(3.6rem, 17vw, 7.2rem);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.045em;
}
.hero h1 .accent {
  background: linear-gradient(90deg, var(--accent), #c3e4ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.role { margin-top: 26px; min-height: 1.5em; font-size: clamp(1.25rem, 4.6vw, 1.75rem); font-weight: 600; letter-spacing: -0.01em; }
.caret { display: inline-block; width: 2px; height: 1.05em; margin-left: 4px; vertical-align: -0.15em; background: var(--accent); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.lead { margin-top: 20px; max-width: 52ch; color: var(--muted); font-size: 1.07rem; }

/* terminal */
.term {
  align-self: center;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: rgba(4, 11, 19, 0.94);
  box-shadow: 0 30px 80px -30px var(--accent-glow);
  overflow: hidden;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.86rem;
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.78rem;
}
.lights { display: inline-flex; gap: 7px; }
.lights i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.lights i:nth-child(2) { background: #febc2e; }
.lights i:nth-child(3) { background: #28c840; }
.term-body { height: 300px; overflow-y: auto; padding: 16px 16px 4px; scrollbar-width: thin; }
.term-body p { margin: 0 0 4px; white-space: pre-wrap; word-break: break-word; color: var(--muted); }
.term-body .t-strong { color: var(--text); font-weight: 600; }
.term-body .t-cmd { color: var(--text); margin-top: 10px; }
.t-dim { color: var(--faint) !important; }
.t-accent { color: var(--accent); }
.t-green { color: var(--green); }
.term-body a { color: var(--accent); }
.term-input { display: flex; align-items: center; gap: 10px; padding: 8px 16px 16px; }
.term-input label { white-space: nowrap; }
.term-input input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 16px; /* 16px stops iOS zooming in on focus */
  caret-color: var(--accent);
}
.term-input input::placeholder { color: var(--faint); }

/* --- sections -------------------------------------------------------------------- */
.section { padding-top: 110px; }
.section h2 { margin-top: 18px; font-size: clamp(2.2rem, 8vw, 3.6rem); font-weight: 700; letter-spacing: -0.035em; line-height: 1.05; }
.section-lead { margin-top: 14px; max-width: 58ch; color: var(--muted); font-size: 1.05rem; }

/* skills */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; }
.tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(7, 17, 28, 0.7);
  color: var(--muted);
  font: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.tab span { font-family: var(--mono); font-size: 0.75rem; color: var(--faint); }
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent-ink); border-color: var(--accent); background: var(--accent); }
.tab.active span { color: rgba(4, 18, 31, 0.7); }
.skills { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.skills li {
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  font-size: 0.95rem;
  transition: border-color 0.2s, transform 0.2s;
}
.skills li:hover { border-color: rgba(124, 196, 255, 0.5); transform: translateY(-2px); }
.skills li[hidden] { display: none; }

/* projects */
.projects { display: grid; gap: 20px; margin-top: 36px; }
.card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.card:hover { border-color: rgba(124, 196, 255, 0.45); transform: translateY(-4px); box-shadow: 0 30px 60px -30px var(--accent-glow); }
.card-media { position: relative; display: block; aspect-ratio: 16 / 9; overflow: hidden; background: #000; }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.card:hover .card-media img { transform: scale(1.04); }
.media-tag {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 5px 12px;
  border-radius: 8px;
  background: rgba(4, 11, 19, 0.82);
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--text);
}
.card-body { padding: 24px; }
.kicker { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.card h3 { margin-top: 10px; font-size: 1.8rem; font-weight: 700; letter-spacing: -0.03em; }
.card-body > p:not(.kicker) { margin-top: 10px; color: var(--muted); }
.chips { list-style: none; padding: 0; margin: 18px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { padding: 4px 11px; border-radius: 8px; background: var(--accent-tint); font-family: var(--mono); font-size: 0.75rem; color: var(--accent); }
.more-link { display: inline-block; margin-top: 28px; color: var(--accent); font-weight: 600; text-decoration: none; }
.more-link:hover { text-decoration: underline; text-underline-offset: 4px; }

/* contact */
.contact { padding-bottom: 40px; }
.contact h2 { font-size: clamp(2.6rem, 11vw, 5rem); }

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: 100px;
  padding-top: 28px;
  padding-bottom: max(32px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.88rem;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; }
.footer a { text-decoration: none; color: var(--muted); }
.footer a:hover { color: var(--accent); }

/* --- scroll reveal (only when JS runs) ---------------------------------------------- */
.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.7s ease, transform 0.7s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* --- phones ----------------------------------------------------------------------------- */
@media (max-width: 520px) {
  .actions .btn { flex: 1 1 100%; }
  .term-body { height: 240px; }
}

/* --- tablet and up ---------------------------------------------------------------------- */
@media (min-width: 760px) {
  .projects { grid-template-columns: repeat(2, 1fr); }
}

/* --- desktop ------------------------------------------------------------------------------- */
@media (min-width: 1040px) {
  .nav nav { display: flex; }
  .nav .btn-sm { margin-left: 8px; }
  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 64px;
    min-height: min(calc(100vh - 72px), 820px);
    padding-top: 56px;
  }
  .term-body { height: 340px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .caret { animation: none; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card, .card-media img, .skills li { transition: none; }
}