/* ============================================================
   Acts — per-section layout + local materials
   ============================================================ */

main { position: relative; z-index: 1; }

/* Field canvas — below everything */
.field {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.field canvas { width: 100%; height: 100%; display: block; }
/* Static fallback gradient — always painted; shader draws over it */
.field-fallback {
  position: absolute; inset: 0;
  background:
    radial-gradient(1200px 800px at 30% -10%, color-mix(in oklab, var(--biolume) 12%, transparent), transparent 60%),
    radial-gradient(900px 700px at 80% 30%, color-mix(in oklab, var(--biolume-deep) 8%, transparent), transparent 60%),
    linear-gradient(180deg, #04070E 0%, #050a18 40%, #071022 70%, #04070E 100%);
  transition: opacity var(--dur-scene) var(--ease-out);
}

.section {
  position: relative;
  padding-inline: var(--gutter);
  padding-block: 120px;
}
.section-inner { max-width: 1280px; margin-inline: auto; }

/* Scroll-velocity skew */
.skew {
  will-change: transform;
  transform: skewY(calc(var(--scroll-vel) * 0.6deg));
  transition: transform 220ms var(--ease-out);
}
@media (prefers-reduced-motion: reduce) { .skew { transform: none !important; } }

/* Local scrim for text over field */
.scrim {
  position: relative;
}
.scrim::before {
  content: '';
  position: absolute;
  inset: -8% -4%;
  background: radial-gradient(60% 70% at 50% 50%, rgb(4 7 14 / 0.55), transparent 70%);
  z-index: -1;
  pointer-events: none;
}

/* ============================================================
   ACT I — SURFACE
   ============================================================ */
.act-surface {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding-top: max(15vh, 120px);
  padding-bottom: 10vh;
}
.hero {
  text-align: center;
  max-width: 1100px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  border-radius: 999px;
  backdrop-filter: var(--glass-blur-lt);
  -webkit-backdrop-filter: var(--glass-blur-lt);
  margin-bottom: 32px;
  animation: fade-up var(--dur-scene) var(--ease-out) both;
}
.hero-eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--biolume);
  box-shadow: 0 0 8px var(--biolume);
}
.hero-name {
  font-size: var(--t-mega);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.03em;
  margin: 0;
  color: var(--foam);
  position: relative;
  animation: fade-up var(--dur-scene) var(--ease-out) 80ms both;
  text-shadow:
    0 0 40px color-mix(in oklab, var(--biolume) 20%, transparent),
    0 0 80px color-mix(in oklab, var(--biolume-deep) 10%, transparent);
}
.hero-name::before {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  color: var(--biolume);
  filter: url(#turbulence);
  opacity: 0.35;
  mix-blend-mode: screen;
  pointer-events: none;
}
.hero-name::after {
  content: '';
  position: absolute;
  inset: auto 0 -8px 0;
  height: 40%;
  background: linear-gradient(180deg, transparent, var(--abyss));
  pointer-events: none;
}
html[lang="fa"] .hero-name {
  font-size: clamp(60px, 9vw, 140px);
  line-height: 1.1;
}
.hero-sub {
  font-size: var(--t-28);
  color: var(--mist);
  max-width: 820px;
  margin: 32px auto 0;
  font-weight: 300;
  text-wrap: pretty;
  animation: fade-up var(--dur-scene) var(--ease-out) 160ms both;
}
.hero-sub em {
  color: var(--foam);
  font-style: normal;
  font-weight: 400;
}
.hero-cta {
  display: inline-flex;
  gap: 12px;
  margin-top: 44px;
  flex-wrap: wrap;
  justify-content: center;
  animation: fade-up var(--dur-scene) var(--ease-out) 240ms both;
}
.hero-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--mist-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--t-12);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 12px;
  opacity: calc(1 - var(--scroll-depth) * 6);
}
.hero-hint .line {
  width: 40px; height: 1px;
  background: var(--mist-dim);
  animation: hint-line 2.4s var(--ease-in-out) infinite;
}
@keyframes hint-line {
  0%, 100% { transform: scaleX(1); opacity: 0.5; }
  50% { transform: scaleX(0.4); opacity: 1; }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Buttons */
.btn {
  appearance: none;
  border: none;
  padding: 14px 22px;
  border-radius: 12px;
  font: inherit;
  font-size: var(--t-14);
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--foam);
  transition: transform var(--dur-ui) var(--ease-out), background var(--dur-ui) var(--ease-out), color var(--dur-ui) var(--ease-out), border-color var(--dur-ui) var(--ease-out);
  will-change: transform;
}
.btn:active { transform: scale(0.97); transition-duration: 160ms; }
.btn-primary {
  background: var(--signal);
  color: var(--abyss);
  font-weight: 600;
  box-shadow: 0 8px 32px -12px color-mix(in oklab, var(--signal) 70%, transparent);
}
.btn-primary:hover { background: var(--signal-hot); }
.btn-ghost {
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  backdrop-filter: var(--glass-blur-lt);
  -webkit-backdrop-filter: var(--glass-blur-lt);
}
.btn-ghost:hover { border-color: var(--glass-edge-2); background: var(--glass-bg-2); }
.btn .arrow {
  width: 14px; height: 1px;
  background: currentColor;
  position: relative;
  transition: width var(--dur-ui) var(--ease-out);
}
.btn .arrow::after {
  content: '';
  position: absolute;
  right: -1px; top: -3px;
  width: 6px; height: 6px;
  border-top: 1px solid currentColor;
  border-inline-end: 1px solid currentColor;
  transform: rotate(45deg);
}
html[dir="rtl"] .btn .arrow { transform: scaleX(-1); }
.btn:hover .arrow { width: 22px; }

/* Underline links */
.ul-link {
  color: var(--foam);
  text-decoration: none;
  background-image: linear-gradient(var(--biolume), var(--biolume));
  background-size: 0% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size var(--dur-ui) var(--ease-out), color var(--dur-ui) var(--ease-out);
  padding-bottom: 2px;
}
.ul-link:hover { background-size: 100% 1px; color: var(--biolume); }
html[dir="rtl"] .ul-link { background-position: 100% 100%; }

/* ============================================================
   ACT II — THERMOCLINE
   ============================================================ */
.act-thermo {
  min-height: 150vh;
  padding-block: 20vh;
}
.thermo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 80px;
  max-width: 1180px;
  margin: 0 auto;
}
.thermo-manifesto {
  font-size: var(--t-56);
  font-weight: 300;
  line-height: 1.15;
  color: var(--foam);
  letter-spacing: -0.02em;
  text-wrap: balance;
  max-width: 20ch;
}
.thermo-manifesto .line {
  display: block;
  opacity: 0.08;
  transform: translateY(12px);
  transition: opacity var(--dur-scene) var(--ease-out), transform var(--dur-scene) var(--ease-out);
}
.thermo-manifesto .line.in { opacity: 1; transform: translateY(0); }
.thermo-manifesto .accent { color: var(--biolume); }
.thermo-manifesto .signal-word { color: var(--signal); }
html[lang="fa"] .thermo-manifesto { font-size: clamp(28px, 3vw, 44px); max-width: 22ch; }

.readouts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.readout {
  padding: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  border-radius: 16px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur-ui) var(--ease-out), border-color var(--dur-ui) var(--ease-out);
}
.readout::before {
  content: '';
  position: absolute;
  top: 0; inset-inline-start: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-edge-2), transparent);
}
.readout:hover { border-color: var(--glass-edge-2); transform: translateY(-2px); }
.readout .label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}
.readout .val {
  font-size: var(--t-20);
  color: var(--foam);
  font-weight: 500;
  margin-top: 6px;
  letter-spacing: -0.01em;
}
.readout .val small {
  display: block;
  color: var(--mist);
  font-size: var(--t-14);
  font-weight: 300;
  margin-top: 4px;
  letter-spacing: 0;
}
.readout .sparkline {
  margin-top: 14px;
  height: 32px;
  width: 100%;
  display: block;
  overflow: visible;
}
.readout .sparkline path {
  fill: none;
  stroke: var(--biolume);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-dasharray: 300;
  stroke-dashoffset: 300;
  transition: stroke-dashoffset 1.4s var(--ease-out);
  filter: drop-shadow(0 0 4px color-mix(in oklab, var(--biolume) 50%, transparent));
}
.readout.in .sparkline path { stroke-dashoffset: 0; }
.readout .sparkline .fill {
  fill: url(#spark-grad);
  stroke: none;
  opacity: 0;
  transition: opacity 1.4s var(--ease-out) 0.2s;
}
.readout.in .sparkline .fill { opacity: 0.4; }

/* ============================================================
   ACT III — CONSTELLATION
   ============================================================ */
.act-constellation {
  min-height: 180vh;
  padding-block: 20vh 15vh;
}
.constellation-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}
.constellation-head h2 {
  font-size: var(--t-76);
  margin: 0;
  color: var(--foam);
  font-weight: 500;
}
.constellation-head p {
  font-size: var(--t-16);
  color: var(--mist);
  max-width: 40ch;
  margin: 0;
}

.constellation {
  position: relative;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 80px;
  gap: 4px;
}
.constellation-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: visible;
}
.constellation-lines line {
  stroke: var(--biolume);
  stroke-width: 1;
  opacity: 0;
  stroke-dasharray: 4 4;
  transition: opacity var(--dur-scene) var(--ease-out);
}
.constellation-lines line.on { opacity: 0.35; }

.proj {
  position: relative;
  padding: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  border-radius: 20px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  cursor: pointer;
  transition: transform var(--dur-scene) var(--ease-in-out),
              opacity var(--dur-scene) var(--ease-in-out),
              filter var(--dur-scene) var(--ease-in-out),
              border-color var(--dur-ui) var(--ease-out);
  opacity: 0.25;
  filter: blur(4px);
  transform: scale(0.96);
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow: hidden;
}
.proj.active {
  opacity: 1;
  filter: blur(0);
  transform: scale(1);
  border-color: var(--glass-edge-2);
  z-index: 2;
}
.proj:hover { border-color: var(--biolume); }
.proj .cover {
  aspect-ratio: 16/10;
  border-radius: 12px;
  overflow: hidden;
  background: var(--abyss-2);
  position: relative;
}
.proj .cover svg { width: 100%; height: 100%; display: block; }
.proj .cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgb(4 7 14 / 0.4));
}
.proj .row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.proj .year {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--mist-dim);
  letter-spacing: 0.16em;
}
.proj .title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--t-28);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--foam);
  line-height: 1.1;
  margin: 0;
}
html[lang="fa"] .proj .title { font-family: 'Vazirmatn'; letter-spacing: 0; }
.proj .one-liner {
  font-size: var(--t-14);
  color: var(--mist);
  margin: 0;
  line-height: 1.5;
}
.proj .chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}
.chip {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 8px;
  background: var(--glass-bg-2);
  border: 1px solid var(--glass-edge);
  border-radius: 6px;
  color: var(--mist);
}
.proj .open {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--biolume);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding-top: 6px;
  border-top: 1px solid var(--glass-edge);
}

/* Constellation layout — hand-placed for scattered feel */
.proj:nth-child(1) { grid-column: 1 / span 5; grid-row: 1 / span 5; }
.proj:nth-child(2) { grid-column: 7 / span 4; grid-row: 2 / span 5; }
.proj:nth-child(3) { grid-column: 2 / span 4; grid-row: 7 / span 5; }
.proj:nth-child(4) { grid-column: 8 / span 5; grid-row: 8 / span 5; }
.proj:nth-child(5) { grid-column: 1 / span 5; grid-row: 13 / span 5; }
.proj:nth-child(6) { grid-column: 7 / span 5; grid-row: 14 / span 5; }

@media (max-width: 900px) {
  .constellation { grid-template-columns: 1fr; grid-auto-rows: auto; gap: 20px; }
  .proj { grid-column: 1 / -1 !important; grid-row: auto !important; opacity: 1; filter: none; transform: none; }
  .constellation-lines { display: none; }
}

/* ============================================================
   ACT IV — SONAR
   ============================================================ */
.act-sonar {
  position: relative;
  height: 300vh; /* provides scroll room for horizontal */
}
.sonar-pin {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.sonar-track {
  display: flex;
  gap: 60px;
  padding-inline: 10vw;
  align-items: center;
  will-change: transform;
  transform: translate3d(0,0,0);
}
html[dir="rtl"] .sonar-track { direction: rtl; }

.sonar-intro {
  min-width: 60vw;
  max-width: 60vw;
}
.sonar-intro h2 {
  font-size: var(--t-76);
  margin: 0 0 20px;
  color: var(--foam);
  font-weight: 500;
}
.sonar-intro p {
  font-size: var(--t-20);
  color: var(--mist);
  max-width: 42ch;
}
.sonar-display {
  position: relative;
  width: 82vh;
  height: 82vh;
  min-width: 480px;
  min-height: 480px;
  flex-shrink: 0;
  border-radius: 50%;
  background: radial-gradient(circle at center, color-mix(in oklab, var(--biolume-dim) 8%, transparent), transparent 60%);
  border: 1px solid var(--glass-edge);
}
.sonar-display::before,
.sonar-display::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--glass-edge);
  transform: scale(0.7);
}
.sonar-display::after { transform: scale(0.4); }
.sonar-crosshair {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.sonar-crosshair::before,
.sonar-crosshair::after {
  content: '';
  position: absolute;
  background: var(--glass-edge);
}
.sonar-crosshair::before { top: 50%; left: 0; right: 0; height: 1px; }
.sonar-crosshair::after { left: 50%; top: 0; bottom: 0; width: 1px; }

.sonar-sweep {
  position: absolute;
  top: 50%; left: 50%;
  width: 50%; height: 2px;
  transform-origin: left center;
  background: linear-gradient(90deg, color-mix(in oklab, var(--biolume) 60%, transparent), transparent);
  opacity: 0.6;
  will-change: transform;
}
.sonar-sweep::before {
  content: '';
  position: absolute;
  inset: -30% 0;
  background: conic-gradient(from -6deg at left center, color-mix(in oklab, var(--biolume) 30%, transparent), transparent 12%);
  transform-origin: left center;
}
.blip {
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--biolume);
  transform: translate(-50%, -50%) scale(0);
  transition: transform 280ms var(--ease-out), background var(--dur-ui) var(--ease-out);
  box-shadow: 0 0 8px var(--biolume);
}
.blip.on { transform: translate(-50%, -50%) scale(1); }
.blip.on.overshoot { transform: translate(-50%, -50%) scale(1.4); }
.blip-label {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--foam);
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--dur-ui) var(--ease-out);
  padding: 3px 6px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  border-radius: 4px;
  backdrop-filter: var(--glass-blur-lt);
}
.blip.on .blip-label { opacity: 1; transition-delay: 200ms; }
.blip-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid var(--biolume);
  opacity: 0.35;
}
.blip-ring path { stroke: var(--biolume); stroke-width: 2; fill: none; }

.sonar-group {
  min-width: 30vw;
  max-width: 40vw;
  padding: 32px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  border-radius: 20px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  flex-shrink: 0;
}
.sonar-group h3 {
  margin: 0 0 6px;
  color: var(--biolume);
  font-size: var(--t-14);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 400;
}
.sonar-group h4 {
  margin: 0 0 20px;
  font-size: var(--t-40);
  color: var(--foam);
  font-weight: 500;
  letter-spacing: -0.01em;
}
.sonar-group ul {
  list-style: none;
  padding: 0; margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.sonar-group li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
  padding-block: 8px;
  border-bottom: 1px solid var(--glass-edge);
  font-size: var(--t-16);
  color: var(--foam);
}
.sonar-group li:last-child { border-bottom: none; }
.sonar-group .prof {
  width: 20px; height: 20px;
  flex-shrink: 0;
}
.sonar-group .prof circle {
  stroke: var(--glass-edge);
  stroke-width: 2;
  fill: none;
}
.sonar-group .prof circle.fill {
  stroke: var(--biolume);
  stroke-linecap: round;
  transform-origin: center;
  transform: rotate(-90deg);
  filter: drop-shadow(0 0 3px color-mix(in oklab, var(--biolume) 50%, transparent));
}

@media (max-width: 900px) {
  .act-sonar { height: auto; }
  .sonar-pin { position: static; height: auto; padding: 40px 0; }
  .sonar-track { flex-direction: column; padding: 0; gap: 32px; }
  .sonar-intro, .sonar-group { min-width: 0; max-width: 100%; }
  .sonar-display { display: none; }
}

/* ============================================================
   ACT V — CREATURE
   ============================================================ */
.act-creature {
  position: relative;
  min-height: 150vh;
  padding-block: 20vh;
  overflow: hidden;
}
.creature-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
.creature-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 30vh;
}
.creature-passage {
  padding: 32px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  border-radius: 20px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  opacity: 0.15;
  transform: translateY(30px);
  transition: opacity var(--dur-scene) var(--ease-out), transform var(--dur-scene) var(--ease-out);
}
.creature-passage.in { opacity: 1; transform: translateY(0); }
.creature-passage p {
  font-size: var(--t-20);
  color: var(--foam);
  line-height: 1.6;
  margin: 0;
  font-weight: 300;
  text-wrap: pretty;
}
.creature-passage .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--mist-dim);
  margin-bottom: 12px;
  display: block;
  text-transform: uppercase;
}
.creature-passage:nth-child(1) { align-self: flex-start; margin-inline-start: 0; }
.creature-passage:nth-child(2) { align-self: flex-end; margin-inline-end: 0; }
.creature-passage:nth-child(3) { align-self: center; }

.pull-quote {
  align-self: center;
  padding: 48px 40px !important;
  border-color: var(--signal) !important;
  background: color-mix(in oklab, var(--signal) 6%, var(--abyss-2)) !important;
  max-width: 720px;
  text-align: center;
}
.pull-quote p {
  font-size: var(--t-40) !important;
  color: var(--signal) !important;
  font-weight: 400 !important;
  letter-spacing: -0.01em;
  line-height: 1.2 !important;
}

/* ============================================================
   ACT VI — ASCENT
   ============================================================ */
.act-ascent {
  min-height: 130vh;
  padding-block: 20vh 8vh;
  position: relative;
}
.ascent-head {
  text-align: center;
  margin-bottom: 60px;
}
.ascent-head .eyebrow { margin-bottom: 20px; display: block; }
.ascent-head h2 {
  font-size: var(--t-76);
  margin: 0;
  color: var(--foam);
  font-weight: 500;
}
.ascent-head p {
  font-size: var(--t-20);
  color: var(--mist);
  max-width: 46ch;
  margin: 20px auto 0;
}

.contact-panel {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  border-radius: 24px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--dur-scene) var(--ease-out), box-shadow var(--dur-scene) var(--ease-out);
}
.contact-panel:focus-within {
  border-color: var(--biolume);
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--biolume) 40%, transparent),
              0 20px 80px -20px color-mix(in oklab, var(--biolume) 40%, transparent);
}
@media (max-width: 720px) {
  .contact-panel { grid-template-columns: 1fr; padding: 28px; gap: 32px; }
}

.contact-form { display: flex; flex-direction: column; gap: 18px; }
.field-wrap {
  position: relative;
  border: 1px solid var(--glass-edge);
  border-radius: 12px;
  background: rgb(4 7 14 / 0.4);
  transition: border-color var(--dur-ui) var(--ease-out);
}
.field-wrap:focus-within { border-color: var(--biolume); }
.field-wrap label {
  position: absolute;
  top: 14px;
  inset-inline-start: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--mist);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  pointer-events: none;
  transition: transform var(--dur-ui) var(--ease-out), color var(--dur-ui) var(--ease-out), font-size var(--dur-ui) var(--ease-out);
  transform-origin: top left;
}
html[dir="rtl"] .field-wrap label { transform-origin: top right; }
.field-wrap input,
.field-wrap textarea {
  width: 100%;
  padding: 28px 16px 12px;
  background: transparent;
  border: none;
  color: var(--foam);
  font: inherit;
  font-size: var(--t-16);
  outline: none;
  resize: vertical;
}
.field-wrap textarea { min-height: 120px; padding-top: 32px; }
.field-wrap.has-value label,
.field-wrap:focus-within label {
  transform: translateY(-8px) scale(0.82);
  color: var(--biolume);
}
.field-wrap input:-webkit-autofill { -webkit-text-fill-color: var(--foam); -webkit-box-shadow: 0 0 0 1000px transparent inset; }

.honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }

.form-submit {
  align-self: flex-start;
  position: relative;
  overflow: visible;
}
.form-submit .ping {
  position: absolute;
  inset: 0;
  border-radius: 12px;
  border: 1.5px solid var(--signal);
  opacity: 0;
  pointer-events: none;
}
.form-submit.sent .ping {
  animation: send-ping 1.2s var(--ease-out) forwards;
}
@keyframes send-ping {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.4); opacity: 0; }
}
.form-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--mist);
  letter-spacing: 0.12em;
  min-height: 16px;
  text-transform: uppercase;
}
.form-status.ok { color: var(--signal); }
.form-status.err { color: #f87171; }

.contact-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-side h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--mist);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin: 0;
  font-weight: 400;
}
.contact-side .email-chip {
  appearance: none;
  border: 1px solid var(--glass-edge);
  background: rgb(4 7 14 / 0.4);
  padding: 14px 16px;
  border-radius: 12px;
  color: var(--foam);
  font: inherit;
  font-size: var(--t-16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 12px;
  transition: border-color var(--dur-ui) var(--ease-out);
}
.contact-side .email-chip:hover { border-color: var(--biolume); }
.contact-side .email-chip:active { transform: scale(0.98); transition: transform 160ms var(--ease-out); }
.contact-side .email-chip .copy-hint {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--mist-dim);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.contact-side .email-chip.copied .copy-hint { color: var(--biolume); }

.socials { display: flex; flex-direction: column; gap: 8px; }
.social-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border: 1px solid var(--glass-edge);
  border-radius: 12px;
  color: var(--foam);
  text-decoration: none;
  font-size: var(--t-14);
  transition: border-color var(--dur-ui) var(--ease-out), padding var(--dur-ui) var(--ease-out);
}
.social-link:hover { border-color: var(--biolume); padding-inline-start: 20px; }
.social-link .arrow { color: var(--biolume); }

/* Bubbles overlay */
.bubbles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.bubble {
  position: absolute;
  bottom: -20px;
  width: var(--sz, 6px);
  height: var(--sz, 6px);
  border-radius: 50%;
  background: color-mix(in oklab, var(--biolume) 30%, transparent);
  border: 1px solid color-mix(in oklab, var(--biolume) 60%, transparent);
  animation: rise var(--dur, 8s) linear infinite;
  animation-delay: var(--delay, 0s);
  left: var(--x, 50%);
  opacity: 0;
}
@keyframes rise {
  0% { transform: translateY(0) translateX(0); opacity: 0; }
  10% { opacity: 0.6; }
  50% { transform: translateY(-50vh) translateX(20px); }
  90% { opacity: 0.6; }
  100% { transform: translateY(-120vh) translateX(-10px); opacity: 0; }
}

/* Footer */
.foot {
  text-align: center;
  padding: 60px var(--gutter) 40px;
  border-top: 1px solid var(--glass-edge);
  margin-top: 80px;
  color: var(--mist-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  position: relative;
}
.foot .persian-line {
  font-family: 'Vazirmatn', sans-serif;
  color: var(--mist);
  font-size: 14px;
  letter-spacing: 0;
  text-transform: none;
  margin-bottom: 14px;
  direction: rtl;
}
.foot .coords {
  color: var(--mist-dim);
  margin-top: 10px;
}
.foot .coords .biolume { color: var(--biolume); }