/* Geysier unit demo page
   ---------------------------------------------------------------- */

.unit-page {
  background: #0b1020;
  color: var(--text-primary);
}

.unit-experience {
  --unit-accent: #00b67a;
  --unit-accent-soft: rgba(0, 182, 122, 0.16);
  --unit-bg-1: #f6f8f5;
  --unit-bg-2: #e8efe6;
  --unit-bg-3: #dbe7df;
  --unit-card-bg: rgba(255, 255, 255, 0.78);
  --unit-card-border: rgba(15, 23, 42, 0.08);
  --unit-card-shadow: 0 30px 80px rgba(15, 23, 42, 0.12), 0 4px 16px rgba(15, 23, 42, 0.05);

  position: relative;
  min-height: 520vh;
  isolation: isolate;
  overflow: clip;
  background:
    radial-gradient(1200px 800px at 12% -10%, rgba(0, 68, 254, 0.10), transparent 60%),
    radial-gradient(900px 700px at 110% 6%, rgba(0, 182, 122, 0.18), transparent 65%),
    linear-gradient(180deg, var(--unit-bg-1) 0%, var(--unit-bg-2) 40%, var(--unit-bg-3) 100%);
  color: var(--text-primary);
}

/* Ambient backdrop blobs and faint grid
   ---------------------------------------------------------------- */
.unit-ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.unit-ambient-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.7;
  will-change: transform;
}

.unit-ambient-blob-a {
  top: -22%;
  left: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle at 30% 30%, rgba(0, 68, 254, 0.42), transparent 65%);
  animation: unit-blob 18s ease-in-out infinite;
}

.unit-ambient-blob-b {
  top: 22%;
  right: -16%;
  width: 56vw;
  height: 56vw;
  background: radial-gradient(circle at 60% 40%, rgba(0, 182, 122, 0.55), transparent 65%);
  animation: unit-blob 24s ease-in-out infinite reverse;
}

.unit-ambient-blob-c {
  bottom: -20%;
  left: 30%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle at 50% 50%, rgba(255, 197, 110, 0.38), transparent 65%);
  animation: unit-blob 30s ease-in-out infinite;
}

.unit-ambient-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 30%, rgba(0, 0, 0, 0.45), transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, rgba(0, 0, 0, 0.45), transparent 70%);
}

@keyframes unit-blob {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50%      { transform: translate3d(4%, -3%, 0) scale(1.07); }
}

/* Fixed 3D stage with frame transform driven by JS
   ---------------------------------------------------------------- */
.unit-stage {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.unit-stage::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 22%;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 0%, rgba(8, 12, 26, 0.18) 100%);
  z-index: 1;
}

.unit-stage-frame {
  --unit-stage-x: 0;
  --unit-stage-y: 0;
  --unit-stage-scale: 1;

  position: absolute;
  inset: 0;
  transform: translate3d(
    calc(var(--unit-stage-x) * 50%),
    calc(var(--unit-stage-y) * 22%),
    0
  ) scale(var(--unit-stage-scale));
  transform-origin: 50% 55%;
  transition: transform 0ms linear;
  will-change: transform;
}

.unit-spline-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0;
  pointer-events: none;
  transition: opacity 600ms ease;
}

.unit-stage[data-state="loaded"] .unit-spline-canvas {
  opacity: 1;
}

/* Loading status pill
   ---------------------------------------------------------------- */
.unit-stage-status {
  position: absolute;
  left: 50%;
  bottom: clamp(28px, 6vw, 64px);
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.1);
  transform: translateX(-50%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: opacity 360ms ease;
}

.unit-stage-status[hidden] {
  display: none;
}

.unit-stage-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--unit-accent);
  box-shadow: 0 0 0 6px rgba(0, 182, 122, 0.16);
  animation: unit-status-pulse 1.6s ease-in-out infinite;
}

.unit-stage-status[data-state="loaded"] .unit-stage-status-dot {
  animation: none;
}

.unit-stage-status[data-state="error"] {
  color: #7f1d1d;
  background: rgba(254, 242, 242, 0.94);
}

.unit-stage-status[data-state="error"] .unit-stage-status-dot {
  background: #b91c1c;
  box-shadow: 0 0 0 6px rgba(185, 28, 28, 0.16);
  animation: none;
}

@keyframes unit-status-pulse {
  0%, 100% { transform: scale(1);   opacity: 1; }
  50%      { transform: scale(0.8); opacity: 0.6; }
}

/* Side progress rail
   ---------------------------------------------------------------- */
.unit-progress {
  position: fixed;
  top: 50%;
  right: clamp(18px, 3vw, 40px);
  z-index: 4;
  transform: translateY(-50%);
  pointer-events: none;
}

.unit-progress ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.unit-progress li {
  --rail-fill: 0;
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(15, 23, 42, 0.4);
  transition: color 240ms ease, transform 240ms ease;
}

.unit-progress-num {
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: 0.06em;
  opacity: 0.7;
}

.unit-progress-label {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 10px;
  padding-right: 6px;
  font-size: 11px;
  letter-spacing: 0.18em;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(6px);
  transition: opacity 240ms ease, transform 240ms ease;
}

.unit-progress-bar {
  grid-column: 1 / -1;
  height: 2px;
  width: 36px;
  margin-left: 2px;
  background: rgba(15, 23, 42, 0.12);
  border-radius: 999px;
  position: relative;
  overflow: hidden;
}

.unit-progress-bar::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  background: var(--unit-accent);
  border-radius: inherit;
  transition: width 320ms ease;
}

.unit-progress li[data-passed] .unit-progress-bar::after {
  width: 100%;
}

.unit-progress li[data-active] {
  color: var(--text-primary);
}

.unit-progress li[data-active] .unit-progress-num {
  opacity: 1;
}

.unit-progress li[data-active] .unit-progress-label {
  opacity: 1;
  transform: translateX(0);
}

.unit-progress li[data-active] .unit-progress-bar::after {
  width: 100%;
  background: var(--text-primary);
}

/* Scroll copy column
   ---------------------------------------------------------------- */
.unit-scroll-copy {
  position: relative;
  z-index: 2;
  pointer-events: none;
}

.unit-copy-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: clamp(96px, 14vh, 160px) clamp(20px, 6vw, 96px);
}

.unit-copy-section-hero {
  align-items: flex-end;
  padding-top: clamp(140px, 18vh, 220px);
  padding-bottom: clamp(140px, 18vh, 200px);
}

.unit-copy-section-final {
  align-items: flex-start;
}

.unit-copy-section-left {
  justify-content: flex-start;
  text-align: left;
}

.unit-copy-section-right {
  justify-content: flex-end;
  text-align: left;
}

.unit-copy-card {
  pointer-events: auto;
  width: min(100%, 520px);
  padding: clamp(28px, 4vw, 44px);
  position: relative;
  border: 1px solid var(--unit-card-border);
  border-radius: var(--radius-xl);
  background: var(--unit-card-bg);
  box-shadow: var(--unit-card-shadow);
  backdrop-filter: blur(28px) saturate(140%);
  -webkit-backdrop-filter: blur(28px) saturate(140%);
  opacity: 0.55;
  transform: translateY(28px) scale(0.985);
  transition:
    opacity 420ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

.unit-copy-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0));
  opacity: 0.6;
  mix-blend-mode: screen;
}

.unit-copy-section[data-active] .unit-copy-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.unit-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--unit-accent);
}

.unit-eyebrow-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 22px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--unit-accent-soft);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.unit-eyebrow-text {
  letter-spacing: 0.22em;
}

.unit-headline {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin: 0 0 18px;
}

.unit-copy-section-hero .unit-headline {
  font-size: clamp(44px, 6.4vw, 84px);
  max-width: 14ch;
}

.unit-copy-section:not(.unit-copy-section-hero) .unit-headline {
  font-size: clamp(32px, 4.2vw, 52px);
  max-width: 18ch;
}

.unit-body {
  margin: 0;
  color: var(--text-secondary);
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.65;
  max-width: 46ch;
}

.unit-cta-row {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: clamp(20px, 3vw, 32px);
  flex-wrap: wrap;
}

.unit-cta-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 999px;
  background: var(--text-primary);
  color: var(--text-on-dark, #f4f4f5);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
  transition: transform 200ms ease, box-shadow 200ms ease, background 200ms ease;
  box-shadow: 0 14px 36px rgba(15, 23, 42, 0.18);
}

.unit-cta-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.22);
}

/* Hero scroll cue
   ---------------------------------------------------------------- */
.unit-scroll-cue {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.unit-scroll-cue-line {
  position: relative;
  width: 36px;
  height: 1px;
  background: rgba(15, 23, 42, 0.18);
  overflow: hidden;
}

.unit-scroll-cue-line::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 40%;
  background: var(--text-primary);
  animation: unit-scroll-cue 1.8s ease-in-out infinite;
}

@keyframes unit-scroll-cue {
  0%   { transform: translateX(-100%); }
  60%  { transform: translateX(220%); }
  100% { transform: translateX(220%); }
}

/* Responsive
   ---------------------------------------------------------------- */
@media (max-width: 1100px) {
  .unit-progress {
    right: clamp(12px, 2.4vw, 24px);
  }

  .unit-progress-label {
    display: none;
  }
}

@media (max-width: 900px) {
  .unit-experience {
    min-height: 480vh;
  }

  .unit-stage-frame {
    transform: translate3d(
      calc(var(--unit-stage-x) * 14%),
      calc(var(--unit-stage-y) * 8%),
      0
    ) scale(var(--unit-stage-scale));
  }

  .unit-copy-section,
  .unit-copy-section-right {
    justify-content: flex-start;
    text-align: left;
  }

  .unit-progress {
    top: auto;
    bottom: 18px;
    right: 50%;
    transform: translate(50%, 0);
  }

  .unit-progress ol {
    flex-direction: row;
    gap: 14px;
  }

  .unit-progress li {
    grid-template-columns: auto;
  }

  .unit-progress-num {
    display: none;
  }

  .unit-progress-bar {
    width: 22px;
    margin: 0;
  }

  .unit-progress li[data-active] .unit-progress-label {
    display: inline-flex;
  }
}

@media (max-width: 640px) {
  .unit-stage {
    height: 100svh;
  }

  .unit-copy-section {
    padding: 96px 18px;
  }

  .unit-copy-section-hero {
    padding-top: 120px;
  }

  .unit-copy-card {
    padding: 22px;
    border-radius: var(--radius-lg);
  }

  .unit-stage-status {
    width: calc(100% - 36px);
    justify-content: center;
    text-align: center;
  }

  .unit-cta-row {
    gap: 16px;
  }

  .unit-scroll-cue {
    font-size: 11px;
    letter-spacing: 0.16em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .unit-ambient-blob,
  .unit-stage-status-dot,
  .unit-scroll-cue-line::after {
    animation: none !important;
  }

  .unit-copy-card {
    transition: none;
  }
}