/* ════════════════════════════════════════════════════════════════════════
   caelangander.com — bold-editorial design system
   ~70% warm neutral · ~20% green (primary) · ~10% purple (secondary)

   Colour reads as identity, not trim. Each verb cluster owns an accent via a
   scoped --accent custom property:
       Talk  → green   (primary action — get in touch)
       Learn → green   (same green as Talk — the serious résumé)
       Explore → purple (the creative / game-dev side)
   Purple is also the global secondary (links, focus, in-dev badges).

   Theme auto-follows the device (prefers-color-scheme). Light is the default;
   there is no manual toggle.
   ════════════════════════════════════════════════════════════════════════ */

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

:root {
  /* ── Neutrals (light / default) ───────────────────────────────────── */
  --color-bg:              #FAF8F3;   /* warm paper */
  --color-surface:         #FFFFFF;   /* raised cards lift off the paper */
  --color-surface-2:       #F1EDE4;   /* sunken chips / tags */
  --color-text:            #1A1C19;
  --color-muted:           #67706A;
  --color-muted-strong:    #586059;   /* AA-safe muted for small text on --color-surface-2 chips */
  --color-hairline:        rgba(26, 28, 25, 0.12);
  --color-hairline-strong: rgba(26, 28, 25, 0.20);

  /* ── Brand ────────────────────────────────────────────────────────── */
  --color-primary:        #15803D;                 /* green-700 */
  --color-primary-deep:   #166534;                 /* green-800 */
  --color-primary-soft:   rgba(21, 128, 61, 0.10);
  --color-secondary:      #7E22CE;                 /* purple-700 */
  --color-secondary-deep: #6B21A8;                 /* purple-800 */
  --color-secondary-soft: rgba(126, 34, 206, 0.12);
  --color-on-accent:      #FFFFFF;                 /* text on any accent fill */

  /* Default accent = green (hero, logo, anything outside a verb cluster).
     Each .cluster re-points these three to its own colour. */
  --accent:      var(--color-primary);
  --accent-deep: var(--color-primary-deep);
  --accent-soft: var(--color-primary-soft);

  /* ── Typography ───────────────────────────────────────────────────── */
  --font-display: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --font-sans:    'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --text-xs:   0.6875rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.75rem;
  --text-3xl:  2.25rem;
  --text-4xl:  3rem;

  --leading-tight:  1.1;
  --leading-snug:   1.3;
  --leading-normal: 1.55;
  --leading-loose:  1.65;

  --tracking-tight:  -0.025em;
  --tracking-normal: 0;
  --tracking-wide:   0.02em;
  --tracking-wider:  0.14em;

  /* ── Spacing (8px grid) ───────────────────────────────────────────── */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* ── Radii ────────────────────────────────────────────────────────── */
  --radius-sm:   4px;
  --radius-md:   6px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-pill: 999px;

  /* ── Elevation (warm-tinted) ──────────────────────────────────────── */
  --shadow-sm: 0 1px 2px rgba(26, 28, 25, 0.05);
  --shadow-md: 0 6px 18px rgba(26, 28, 25, 0.08);
  --shadow-lg: 0 18px 44px rgba(26, 28, 25, 0.12);

  /* ── Motion & layout ──────────────────────────────────────────────── */
  --ease-out:  cubic-bezier(0.2, 0.9, 0.3, 1);
  --ease-in:   cubic-bezier(0.7, 0, 0.84, 0);
  --ease-snap: cubic-bezier(0.4, 0, 0.6, 1);
  --d-fast:    140ms;
  --d-med:     220ms;
  --d-view:    340ms;
  --transition: 0.2s ease;
  --max-width: 1180px;

  /* ── Atmosphere ───────────────────────────────────────────────────── */
  --grain: 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='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  --grain-opacity: 0.04;
}

/* ── DARK MODE — auto, follows the device (no manual toggle) ──────────── */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:              #0E1413;
    --color-surface:         #161E1B;
    --color-surface-2:       #1E2723;
    --color-text:            #ECEAE3;
    --color-muted:           #9AA39C;
    --color-muted-strong:    #9AA39C;   /* dark chips already clear AA — keep muted */
    --color-hairline:        rgba(255, 255, 255, 0.10);
    --color-hairline-strong: rgba(255, 255, 255, 0.18);

    --color-primary:        #22C55E;               /* green-500 — lifted */
    --color-primary-deep:   #4ADE80;               /* green-400 */
    --color-primary-soft:   rgba(34, 197, 94, 0.16);
    --color-secondary:      #C084FC;               /* purple-400 — lifted */
    --color-secondary-deep: #D8B4FE;               /* purple-300 */
    --color-secondary-soft: rgba(192, 132, 252, 0.16);
    --color-on-accent:      #0E1413;               /* dark text on bright fills */

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 18px 44px rgba(0, 0, 0, 0.5);

    --grain-opacity: 0.05;
  }
}

/* ── Per-verb identity ───────────────────────────────────────────────── */
.cluster[data-cluster="talk"] {
  --accent:      var(--color-primary);
  --accent-deep: var(--color-primary-deep);
  --accent-soft: var(--color-primary-soft);
}
.cluster[data-cluster="learn"] {
  --accent:      var(--color-primary);   /* same green as Talk — one primary, not two */
  --accent-deep: var(--color-primary-deep);
  --accent-soft: var(--color-primary-soft);
}
.cluster[data-cluster="explore"] {
  --accent:      var(--color-secondary);
  --accent-deep: var(--color-secondary-deep);
  --accent-soft: var(--color-secondary-soft);
}

/* ── Base ────────────────────────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
  background: var(--color-bg);
}

body {
  font-family: var(--font-sans);
  background: transparent;
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* soft brand glows top of page + fine grain — depth without the cliché */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(62% 48% at 12% -6%, color-mix(in srgb, var(--color-primary) 13%, transparent), transparent 72%),
    radial-gradient(46% 40% at 104% -8%, color-mix(in srgb, var(--color-secondary) 10%, transparent), transparent 70%);
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: var(--grain);
  background-size: 140px 140px;
  opacity: var(--grain-opacity);
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; background: none; border: none; color: inherit; cursor: pointer; }

::selection { background: color-mix(in srgb, var(--color-primary) 24%, transparent); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 48px;
  width: 100%;
}

/* shared keyboard-focus ring — picks up the local --accent */
a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible,
[tabindex="0"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ── Header ───────────────────────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 72%, transparent);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--color-hairline);
  transition: border-color var(--transition);
}

.nav {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 60px;
}

.logo {
  display: grid;
  place-items: center;
  padding: 0;
  border-radius: var(--radius-md);
  transition: transform var(--d-fast) var(--ease-out);
}
.logo svg {
  display: block;
  border-radius: 6px;
  box-shadow: 0 1px 2px rgba(21, 128, 61, 0.25);
  transition: box-shadow var(--d-fast) var(--ease-out);
}
.logo:hover,
.logo:focus-visible { transform: translateY(-1px) scale(1.05); outline: none; }
.logo:hover svg,
.logo:focus-visible svg { box-shadow: 0 6px 16px color-mix(in srgb, var(--color-primary) 38%, transparent); }

.nav-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity var(--d-med) var(--ease-out), transform var(--d-med) var(--ease-out);
}
body[data-active] .nav-name { opacity: 1; transform: translateY(0); }

/* active-section chip — wayfinding that mirrors the deep-link */
.nav-verb {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-on-accent);
  background: var(--accent);
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  opacity: 0;
  transform: translateY(-4px) scale(0.96);
  pointer-events: none;
  transition: opacity var(--d-med) var(--ease-out), transform var(--d-med) var(--ease-out);
}
body[data-active] .nav-verb { opacity: 1; transform: translateY(0) scale(1); }
body[data-active="talk"]    .nav-verb { background: var(--color-primary); }
body[data-active="learn"]   .nav-verb { background: var(--color-primary); }
body[data-active="explore"] .nav-verb { background: var(--color-secondary); }

@media (max-width: 480px) {
  .nav-name { font-size: 0.9375rem; }
}

/* ── Stage ──────────────────────────────────────────────────────────── */
.stage { flex: 1; display: flex; flex-direction: column; }
.stage-inner {
  padding-top: 56px;
  padding-bottom: 72px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 52px;
}

/* ── Banner / hero ──────────────────────────────────────────────────── */
.banner-wrap {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows var(--d-view) var(--ease-out);
}
.banner {
  overflow: hidden;
  min-height: 0;
  position: relative;
  transition: opacity var(--d-fast) var(--ease-out), transform var(--d-fast) var(--ease-out);
}

.banner-name {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9vw, 5.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 0.97;
  color: var(--color-text);
  margin-bottom: 22px;
}

.banner-about {
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  color: var(--color-muted);
  max-width: 54ch;
  line-height: 1.6;
}
.banner-about strong { color: var(--color-text); font-weight: 600; }

body[data-active] .banner-wrap { grid-template-rows: 0fr; }
body[data-active] .stage-inner { gap: 24px; }
body[data-active] .banner { opacity: 0; transform: translateY(-12px); }

/* ── Tile clusters ──────────────────────────────────────────────────── */
.tiles {
  display: flex;
  gap: 18px;
  align-items: stretch;
}
.cluster {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  transition:
    flex-grow var(--d-view) var(--ease-out),
    flex-basis var(--d-view) var(--ease-out),
    opacity 110ms var(--ease-out);
}
body:not([data-active]) .cluster > .tile { flex: 1 0 auto; }
body[data-active] .cluster { flex: 0 0 0; opacity: 0; pointer-events: none; }
body[data-active="talk"]    .cluster[data-cluster="talk"],
body[data-active="learn"]   .cluster[data-cluster="learn"],
body[data-active="explore"] .cluster[data-cluster="explore"] {
  flex: 1 1 100%;
  opacity: 1;
  pointer-events: auto;
}

/* ── Tile ───────────────────────────────────────────────────────────── */
.tile {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas: "icon body back";
  gap: 18px;
  align-items: start;
  width: 100%;
  padding: 26px 26px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  text-align: left;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    transform var(--d-fast) var(--ease-out),
    box-shadow var(--d-fast) var(--ease-out),
    border-color var(--d-fast) var(--ease-out),
    padding var(--d-view) var(--ease-out),
    background var(--d-fast) var(--ease-out),
    color var(--d-fast) var(--ease-out);
}
.tile::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 55%, color-mix(in srgb, var(--accent) 10%, transparent) 100%);
  opacity: 0;
  transition: opacity var(--d-med) var(--ease-out);
  pointer-events: none;
}
.tile::after {
  content: '→';
  position: absolute;
  top: 24px;
  right: 24px;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent);
  line-height: 1;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  pointer-events: none;
}
.tile:hover,
.tile:focus-visible {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
  outline: none;
}
.tile:hover::before,
.tile:focus-visible::before { opacity: 1; }
.tile:hover::after,
.tile:focus-visible::after { opacity: 1; transform: translateX(0); }
.tile:active {
  transform: translateY(-2px) scale(0.99);
  transition-duration: 80ms;
  transition-timing-function: var(--ease-snap);
}

/* Active tile morphs into a solid accent-filled header band.
   Only the active cluster is visible, so the broad selector is safe. */
body[data-active] .tile {
  cursor: default;
  transform: none;
  background: var(--accent);
  border-color: var(--accent);
  color: var(--color-on-accent);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  padding: 22px 26px;
  align-items: center;
  box-shadow: none;
}
body[data-active] .tile::before { opacity: 0; }
body[data-active] .tile::after { display: none; }

.tile-icon {
  grid-area: icon;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--accent-soft);
  color: var(--accent);
  flex-shrink: 0;
  transition:
    background var(--d-fast) var(--ease-out),
    color var(--d-fast) var(--ease-out),
    transform var(--d-fast) var(--ease-out),
    width var(--d-view) var(--ease-out),
    height var(--d-view) var(--ease-out);
}
.tile:hover .tile-icon,
.tile:focus-visible .tile-icon {
  background: var(--accent);
  color: var(--color-on-accent);
  transform: rotate(-6deg) scale(1.05);
}
body[data-active] .tile-icon {
  background: color-mix(in srgb, var(--color-on-accent) 16%, transparent);
  color: var(--color-on-accent);
  width: 44px;
  height: 44px;
  transform: none;
}

.tile-body { grid-area: body; display: flex; flex-direction: column; gap: 7px; min-width: 0; }

.tile-verb {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
  line-height: 1.05;
  transition: font-size var(--d-view) var(--ease-out), color var(--d-fast) var(--ease-out);
}
body[data-active] .tile-verb { color: var(--color-on-accent); }

.tile-sub {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  letter-spacing: 0;
  color: var(--color-muted);
  font-weight: 400;
  transition: opacity var(--d-fast) var(--ease-out), margin var(--d-view) var(--ease-out), color var(--d-fast) var(--ease-out);
}
body[data-active] .tile-sub { color: var(--color-on-accent); opacity: 0.95; }

.tile-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
  max-height: 1000px;
  overflow: hidden;
  min-width: 0;
  transition:
    opacity var(--d-fast) var(--ease-out),
    max-height var(--d-view) var(--ease-out),
    margin var(--d-view) var(--ease-out);
}
.tile-preview--list { flex-direction: column; gap: 11px; }

.preview-row {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
  max-width: 100%;
}
.preview-row strong {
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.875rem;
  line-height: 1.3;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  max-width: 100%;
}
.preview-row em {
  font-style: normal;
  font-weight: 400;
  color: var(--color-muted);
  font-size: 0.75rem;
  line-height: 1.3;
  min-width: 0;
  max-width: 100%;
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.meet-logo,
.preview-logo { flex-shrink: 0; display: inline-block; vertical-align: middle; }
.meet-logo { border-radius: 3px; }

body[data-active] .tile-preview {
  opacity: 0;
  max-height: 0;
  margin-top: 0;
  pointer-events: none;
}

/* Back affordance inside the active band */
.tile-back-affordance {
  grid-area: back;
  display: none;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-on-accent);
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: background var(--d-fast) var(--ease-out), border-color var(--d-fast) var(--ease-out);
}
body[data-active] .tile-back-affordance {
  display: inline-flex;
  border-color: color-mix(in srgb, var(--color-on-accent) 35%, transparent);
  background: color-mix(in srgb, var(--color-on-accent) 10%, transparent);
}
body[data-active] .tile:hover .tile-back-affordance {
  background: color-mix(in srgb, var(--color-on-accent) 22%, transparent);
  border-color: var(--color-on-accent);
}

/* ── Panel reveal ───────────────────────────────────────────────────── */
.panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--d-view) var(--ease-out);
}
.panel-inner {
  overflow: hidden;
  min-height: 0;
  opacity: 0;
  background: var(--color-surface);
  border: 1px solid var(--accent);
  border-top: none;
  border-bottom-left-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
  padding: 0 32px;
  transition: opacity var(--d-fast) var(--ease-out), padding var(--d-view) var(--ease-out);
}
body[data-active="talk"]    .cluster[data-cluster="talk"]    .panel,
body[data-active="learn"]   .cluster[data-cluster="learn"]   .panel,
body[data-active="explore"] .cluster[data-cluster="explore"] .panel {
  grid-template-rows: 1fr;
}
body[data-active="talk"]    .cluster[data-cluster="talk"]    .panel-inner,
body[data-active="learn"]   .cluster[data-cluster="learn"]   .panel-inner,
body[data-active="explore"] .cluster[data-cluster="explore"] .panel-inner {
  opacity: 1;
  padding: 36px 32px 40px;
}

/* ── Channels (Talk panel) ──────────────────────────────────────────── */
.channels {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.channel {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition:
    transform var(--d-fast) var(--ease-out),
    box-shadow var(--d-fast) var(--ease-out),
    border-color var(--d-fast) var(--ease-out);
}
.channel:hover,
.channel:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
  outline: none;
}
.channel:active { transform: translateY(0) scale(0.99); transition-duration: 80ms; }

.channel-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--accent-soft);
  color: var(--accent);
  flex-shrink: 0;
  transition: background var(--d-fast) var(--ease-out), color var(--d-fast) var(--ease-out);
}
.channel:hover .channel-icon,
.channel:focus-visible .channel-icon { background: var(--accent); color: var(--color-on-accent); }

.channel-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.channel-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
}
.channel-value {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.005em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.channel-aux {
  display: block;
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-top: 2px;
  line-height: 1.4;
}
.channel-flag {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  background: var(--color-surface-2);
  border: 1px solid var(--color-hairline);
  padding: 2px 6px;
  border-radius: 4px;
}

/* dual Call / Text channel */
.channel--dual {
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  padding: 0;
  cursor: pointer;
  text-align: left;
  user-select: none;
}
.channel-row { display: flex; align-items: center; gap: 16px; padding: 18px 20px; }
.channel--dual.is-open .channel-row { border-bottom: 1px dashed var(--color-hairline); }
.channel--dual .channel-icon--dual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 0 4px;
  width: 56px;
  background: transparent;
  color: var(--accent);
}
.channel--dual:hover .channel-icon--dual { background: transparent; color: var(--accent); }
.channel--dual .channel-icon--dual svg + svg { margin-left: -4px; }

.channel-toggle-arrow {
  display: grid;
  place-items: center;
  color: var(--color-muted);
  flex-shrink: 0;
  transition: transform 200ms var(--ease-out), color var(--d-fast) var(--ease-out);
}
.channel--dual:hover .channel-toggle-arrow,
.channel--dual:focus-visible .channel-toggle-arrow { color: var(--accent); }
.channel--dual.is-open .channel-toggle-arrow { transform: rotate(180deg); color: var(--accent); }

.channel-popout {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 220ms var(--ease-out);
}
.channel-popout-inner { overflow: hidden; min-height: 0; }
.channel--dual.is-open .channel-popout { grid-template-rows: 1fr; }

.popout-row {
  display: flex;
  gap: 10px;
  padding: 12px 20px 16px;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 160ms ease-out, transform 220ms var(--ease-out);
}
.channel--dual.is-open .popout-row { opacity: 1; transform: translateY(0); }

.popout-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex: 1;
  padding: 10px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  transition:
    transform 140ms var(--ease-out),
    border-color 140ms var(--ease-out),
    box-shadow 140ms var(--ease-out),
    background 140ms var(--ease-out);
}
.popout-btn svg { color: var(--accent); flex-shrink: 0; transition: transform 140ms var(--ease-out); }
.popout-btn:hover,
.popout-btn:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  background: var(--accent-soft);
  outline: none;
}
.popout-btn:hover svg,
.popout-btn:focus-visible svg { transform: scale(1.08); }
.popout-btn:active { transform: translateY(0) scale(0.98); transition-duration: 80ms; }

/* Google Meet — the marquee CTA, a solid accent-filled button */
.channel--primary {
  grid-column: 1 / -1;
  padding: 24px 28px;
  gap: 22px;
  border: none;
  background: var(--accent);        /* one green — same as the bands and icons */
  color: var(--color-on-accent);
  box-shadow: var(--shadow-md);
}
.channel--primary:hover,
.channel--primary:focus-visible {
  transform: translateY(-3px);
  background: var(--accent-deep);   /* the only place the deep green appears — hover only */
  box-shadow: 0 20px 44px color-mix(in srgb, var(--accent) 40%, transparent);
  border: none;
}
.channel-icon--meet {
  width: 58px;
  height: 48px;
  background: #FFFFFF;
  border-radius: 10px;
  padding: 7px;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}
.channel-icon--meet svg { width: 100%; height: 100%; display: block; }
.channel--primary:hover .channel-icon--meet { background: #FFFFFF; }

.channel-label--primary {
  color: var(--color-on-accent);
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.625rem;
}
.channel-value--primary {
  font-size: 1.1875rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--color-on-accent);
}
.channel--primary .channel-aux { color: var(--color-on-accent); }

.channel-arrow {
  display: grid;
  place-items: center;
  color: var(--color-on-accent);
  flex-shrink: 0;
  transition: transform var(--d-fast) var(--ease-out);
}
.channel--primary:hover .channel-arrow { transform: translate(3px, -3px); }

/* ── Section labels (shared Learn + Explore) ────────────────────────── */
.section-label {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-muted);
  margin: 40px 0 20px;
}
.section-label::before {
  content: '';
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  flex: 0 0 auto;
}
.section-label::after {
  content: '';
  flex: 1 1 auto;
  height: 1px;
  background: var(--color-hairline);
}
.section-label:first-of-type { margin-top: 0; }
.resume-header + .section-label { margin-top: 0; }

/* ── Learn: résumé header ───────────────────────────────────────────── */
.resume-header {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-hairline);
}
.resume-headline {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 8px;
}
.resume-tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.resume-summary {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.65;
  max-width: 72ch;
}

.resume-meta {
  margin: 1.5rem 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-hairline);
  border-bottom: 1px solid var(--color-hairline);
  max-width: 72ch;
}
.resume-meta-row {
  display: grid;
  grid-template-columns: minmax(7rem, max-content) 1fr;
  gap: 1.5rem;
  align-items: baseline;
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--color-hairline);
}
.resume-meta-row:last-child { border-bottom: none; }
.resume-meta-label {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text);
  margin: 0;
}
.resume-meta-value {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text);
  margin: 0;
}
@media (max-width: 640px) {
  .resume-meta-row { grid-template-columns: 1fr; gap: 0.25rem; }
}

/* ── Learn: Selected Work (case studies) ────────────────────────────── */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-bottom: 18px;
}
.case-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 28px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-left: 3px solid var(--accent);   /* the cue that says "feature", not "timeline" */
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}
.case-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-hairline-strong);
  border-left-color: var(--accent);
  transform: translateY(-2px);
}
.case-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.18;
}
.case-scope {
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.5;
  font-weight: 500;
}
.case-q {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-top: 6px;
}
.case-a {
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.55;
}
.case-a strong { color: var(--color-text); font-weight: 600; }

/* ── Learn: experience grid ─────────────────────────────────────────── */
.exp-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-bottom: 18px;
}
.exp-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 26px 22px;
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}
.exp-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-hairline-strong);
  transform: translateY(-2px);
}
.exp-head { display: block; }
.exp-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  gap: 12px;
}
.exp-role {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 3px;
}
.exp-company {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: -0.005em;
}
.exp-loc { color: var(--color-muted); font-weight: 400; font-size: 0.8125rem; }
.exp-lede {
  font-size: 0.875rem;
  color: var(--color-text);
  line-height: 1.55;
  font-weight: 500;
}
.exp-bullets { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.exp-bullets li {
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.55;
  padding-left: 16px;
  position: relative;
}
.exp-bullets li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-primary);
}
.exp-bullets strong { color: var(--color-text); font-weight: 600; }

.exp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  list-style: none;
  margin-top: 4px;
  padding-top: 12px;
  border-top: 1px dashed var(--color-hairline);
}
.exp-tags li {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 400;
  color: var(--color-muted-strong);
  background: var(--color-surface-2);
  border: 1px solid var(--color-hairline);
  padding: 3px 9px;
  border-radius: 4px;
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary-deep);
  background: var(--color-primary-soft);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}
.card-tag--alt { color: var(--color-muted); background: var(--color-surface-2); }
.card-year {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
}

/* ── Learn: Toolkit / Domains ───────────────────────────────────────── */
.learn-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--color-hairline);
}
.detail-group { margin: 0; }
.detail-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text);
  margin-bottom: 12px;
}
.pill-list { display: flex; gap: 6px; flex-wrap: wrap; list-style: none; }
.pill-list li {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-muted-strong);
  background: var(--color-surface-2);
  border: 1px solid var(--color-hairline);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  transition: all var(--transition);
}
.pill-list li:hover { border-color: var(--accent); color: var(--color-text); }

/* ── Learn: earlier roles strip ─────────────────────────────────────── */
.earlier-roles {
  margin-top: 18px;
  padding: 20px 22px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
}
.earlier-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  margin-bottom: 14px;
}
.earlier-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.earlier-list li {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 4px 16px;
  align-items: baseline;
}
.earlier-role { font-size: 0.875rem; font-weight: 600; color: var(--color-text); }
.earlier-org { font-size: 0.8125rem; color: var(--color-primary); }
.earlier-dates {
  font-size: 0.75rem;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.earlier-desc {
  grid-column: 1 / -1;
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.55;
}

/* ── Learn: education ───────────────────────────────────────────────── */
.education-block { display: flex; flex-direction: column; gap: 18px; }
.edu-card {
  padding: 24px 26px 22px;
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.edu-head { margin-bottom: 14px; }
.edu-degrees { list-style: none; display: flex; flex-direction: column; gap: 4px; margin-bottom: 18px; }
.edu-degrees li { font-size: 0.9375rem; color: var(--color-text); line-height: 1.5; }
.edu-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-hairline);
}
.internship-list {
  padding: 20px 22px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
}

/* ── Explore: GitHub CTA ────────────────────────────────────────────── */
.github-cta {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 22px;
  background: var(--color-surface);
  border: 1px solid var(--color-text);
  border-radius: var(--radius-lg);
  margin-top: 22px;
  position: relative;
  overflow: hidden;
  transition: transform var(--d-fast) var(--ease-out), box-shadow var(--d-fast) var(--ease-out);
}
.github-cta:hover,
.github-cta:focus-visible { transform: translateY(-2px); box-shadow: var(--shadow-md); outline: none; }
.github-cta-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  background: var(--color-text);
  color: var(--color-bg);
  flex-shrink: 0;
}
.github-cta-body { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.github-cta-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
}
.github-cta-value { font-size: 0.9375rem; font-weight: 500; color: var(--color-text); letter-spacing: -0.005em; }
.github-cta-arrow {
  display: grid;
  place-items: center;
  color: var(--color-muted);
  transition: transform var(--d-fast) var(--ease-out), color var(--d-fast) var(--ease-out);
}
.github-cta:hover .github-cta-arrow { color: var(--accent); transform: translate(3px, -3px); }

/* ── Explore: project badges ────────────────────────────────────────── */
.project-badges {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.project-badge,
.project-badge--wide {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 20px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition:
    transform var(--d-fast) var(--ease-out),
    box-shadow var(--d-fast) var(--ease-out),
    border-color var(--d-fast) var(--ease-out);
}
.project-badge:hover,
.project-badge:focus-visible,
.project-badge--wide:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
  outline: none;
}
.project-badge--wide { padding: 0 20px 20px; }

.badge-media {
  margin: 0 -20px 14px;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
}
.badge-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.badge-media--placeholder {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-hairline);
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.project-badge-head {
  padding-top: 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.project-badge-head h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-right: auto;
}

.badge-status {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  white-space: nowrap;
}
.badge-status--public {
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-color: color-mix(in srgb, var(--color-primary) 38%, transparent);
}
.badge-status--soon {
  color: var(--color-secondary);
  background: var(--color-secondary-soft);
  border-color: color-mix(in srgb, var(--color-secondary) 38%, transparent);
}

.project-badge .external {
  display: grid;
  place-items: center;
  color: var(--color-muted);
  transition: color var(--d-fast) var(--ease-out), transform var(--d-fast) var(--ease-out);
}
.project-badge:hover .external { color: var(--accent); transform: translate(2px, -2px); }

.project-badge-desc { font-size: 0.8125rem; color: var(--color-muted); line-height: 1.5; }

.badge-tags { display: flex; gap: 4px; flex-wrap: wrap; list-style: none; margin-top: 4px; }
.badge-tags li {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 400;
  color: var(--color-muted-strong);
  background: var(--color-surface-2);
  border: 1px solid var(--color-hairline);
  padding: 2px 8px;
  border-radius: 3px;
}

.project-badges--demos { grid-template-columns: repeat(2, 1fr); }

/* Pain Mountain screenshot strip */
.pm-shots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 0 -20px 14px;
  aspect-ratio: 36 / 10;
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-hairline);
}
.pm-shot {
  position: relative;
  overflow: hidden;
  background: var(--color-surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--color-hairline);
}
.pm-shot:last-child { border-right: none; }
.pm-shot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.pm-shot--placeholder,
.pm-shot:has(span) {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-muted);
  letter-spacing: 0.01em;
}

/* ── Intro choreography ─────────────────────────────────────────────── */
@keyframes intro-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
body.has-intro .banner-name,
body.has-intro .banner-about,
body.has-intro .cluster {
  opacity: 0;
  animation: intro-up 720ms var(--ease-out) forwards;
}
body.has-intro .banner-name   { animation-delay:   0ms; }
body.has-intro .banner-about  { animation-delay: 160ms; }
body.has-intro .cluster:nth-child(1) { animation-delay: 340ms; }
body.has-intro .cluster:nth-child(2) { animation-delay: 460ms; }
body.has-intro .cluster:nth-child(3) { animation-delay: 580ms; }
body.has-intro .banner-wrap { transition: none; }

/* ── Footer ─────────────────────────────────────────────────────────── */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 48px;
  border-top: 2px solid var(--color-secondary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  letter-spacing: 0;
  color: var(--color-muted);
  transition: opacity var(--d-view) var(--ease-out);
  margin-top: auto;
}
body[data-active] .footer { opacity: 0.5; }
.footer-time { font-variant-numeric: tabular-nums; }

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .container { padding: 0 32px; }
  .footer { padding: 28px 32px; }

  .tiles { flex-direction: column; }
  .cluster { flex: 0 0 auto; }
  body[data-active="talk"]    .cluster[data-cluster="talk"],
  body[data-active="learn"]   .cluster[data-cluster="learn"],
  body[data-active="explore"] .cluster[data-cluster="explore"] { flex: 0 0 auto; }
  body[data-active] .cluster { flex: 0 0 0; min-height: 0; overflow: hidden; margin: 0; }

  .learn-details { grid-template-columns: 1fr; gap: 24px; }
  .channels { grid-template-columns: 1fr; }
  .channel--primary { grid-column: auto; }
  .exp-grid,
  .case-grid { grid-template-columns: 1fr; }
  .edu-detail-grid { grid-template-columns: 1fr; gap: 18px; }
  .project-badges,
  .project-badges--demos { grid-template-columns: 1fr; }
  .earlier-list li { grid-template-columns: 1fr; }
  .earlier-dates { justify-self: start; }
}

@media (max-width: 720px) {
  .container { padding: 0 24px; }
  .footer { padding: 22px 24px; }
  .stage-inner { padding-top: 36px; padding-bottom: 48px; gap: 36px; }

  .pm-shots { grid-template-columns: 1fr; aspect-ratio: auto; }
  .pm-shot {
    aspect-ratio: 16 / 9;
    border-right: none;
    border-bottom: 1px solid var(--color-hairline);
  }
  .pm-shot:last-child { border-bottom: none; }

  .channel-icon--meet { width: 48px; height: 40px; }
  .channel-value--primary { font-size: 1.0625rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .footer { padding: 16px; }
  .channel { padding: 14px 16px; gap: 12px; }
  .channel-icon { width: 38px; height: 38px; }
  .panel-inner { padding: 0 18px; }
  body[data-active="talk"]    .cluster[data-cluster="talk"]    .panel-inner,
  body[data-active="learn"]   .cluster[data-cluster="learn"]   .panel-inner,
  body[data-active="explore"] .cluster[data-cluster="explore"] .panel-inner { padding: 26px 18px 30px; }
  .exp-card { padding: 20px 18px 18px; }
  .resume-headline { font-size: 1.25rem; }
  .channel--primary { padding: 18px 18px; gap: 14px; }
}

/* ── Reduced motion ─────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}