/* =========================================================
   Blind Test — Shared CSS
   ========================================================= */

:root {
  --neon-pink: oklch(0.72 0.27 350);
  --neon-cyan: oklch(0.85 0.18 200);
  --neon-violet: oklch(0.65 0.27 300);
  --stage-deep: oklch(0.12 0.08 285);
  --foreground: oklch(0.98 0.01 320);
  --foreground-muted: oklch(0.98 0.01 320 / 0.5);
  --input-bg: oklch(0.3 0.06 285 / 0.6);
  --shadow-neon-pink: 0 0 12px oklch(0.72 0.27 350 / 0.9),
    0 0 28px oklch(0.72 0.27 350 / 0.55),
    0 0 60px oklch(0.72 0.27 350 / 0.35);
  --shadow-neon-cyan: 0 0 10px oklch(0.85 0.18 200 / 0.85),
    0 0 24px oklch(0.85 0.18 200 / 0.5);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--stage-deep);
  color: var(--foreground);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* =========================================================
   Stage / background
   ========================================================= */
.stage {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 60% at 50% 40%, oklch(0.35 0.22 320 / 0.55), transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 80%, oklch(0.4 0.2 240 / 0.45), transparent 70%),
    linear-gradient(180deg, oklch(0.1 0.06 280), oklch(0.06 0.05 270));
}

/* =========================================================
   Smoke
   ========================================================= */
.smoke-layer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.smoke {
  position: absolute;
  border-radius: 9999px;
  filter: blur(44px);
  opacity: 0.55;
}
.smoke-1 {
  left: -80px; top: 40px;
  width: 288px; height: 288px;
  background: radial-gradient(circle, oklch(0.55 0.22 320 / 0.55), transparent 70%);
  animation: smoke-drift-1 14s ease-in-out infinite;
}
.smoke-2 {
  right: -64px; top: 130px;
  width: 320px; height: 320px;
  background: radial-gradient(circle, oklch(0.55 0.2 240 / 0.55), transparent 70%);
  animation: smoke-drift-2 18s ease-in-out infinite;
}
.smoke-3 {
  bottom: -40px; left: 25%;
  width: 288px; height: 288px;
  background: radial-gradient(circle, oklch(0.6 0.22 290 / 0.5), transparent 70%);
  animation: smoke-drift-3 22s ease-in-out infinite;
}
@keyframes smoke-drift-1 {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50%       { transform: translate3d(40px, -30px, 0) scale(1.15); }
}
@keyframes smoke-drift-2 {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1.1); }
  50%       { transform: translate3d(-50px, 20px, 0) scale(0.95); }
}
@keyframes smoke-drift-3 {
  0%, 100% { transform: translate3d(0, 0, 0) scale(0.9); }
  50%       { transform: translate3d(30px, 40px, 0) scale(1.2); }
}

/* =========================================================
   Floating notes
   ========================================================= */
.notes-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.note {
  position: absolute;
  bottom: 8%;
  animation: float-note 6s ease-in-out infinite;
  user-select: none;
}
.note-pink {
  color: oklch(0.85 0.22 340);
  filter: drop-shadow(0 0 6px var(--neon-pink)) drop-shadow(0 0 14px var(--neon-pink));
}
.note-cyan {
  color: oklch(0.9 0.18 200);
  filter: drop-shadow(0 0 6px var(--neon-cyan)) drop-shadow(0 0 14px var(--neon-cyan));
}
@keyframes float-note {
  0%   { transform: translateY(0) rotate(-6deg); opacity: 0; }
  15%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { transform: translateY(-120px) rotate(8deg); opacity: 0; }
}

/* =========================================================
   Content
   ========================================================= */
.content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 28rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.title-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.note-side { font-size: 28px; }
.neon-cyan {
  color: oklch(0.9 0.18 200);
  filter: drop-shadow(0 0 6px var(--neon-cyan)) drop-shadow(0 0 14px var(--neon-cyan));
}
.neon-title {
  margin: 0;
  font-family: "Pacifico", "Brush Script MT", cursive;
  font-size: clamp(36px, 10vw, 80px);
  line-height: 1;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: oklch(0.98 0.02 340);
  text-shadow:
    0 0 4px oklch(1 0 0 / 0.9),
    0 0 10px var(--neon-pink),
    0 0 22px var(--neon-pink),
    0 0 44px var(--neon-pink),
    0 0 80px oklch(0.65 0.27 340 / 0.7);
  animation: neon-flicker 4.5s infinite;
}
@keyframes neon-flicker {
  0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
    opacity: 1;
    text-shadow:
      0 0 4px oklch(1 0 0 / 0.9),
      0 0 10px var(--neon-pink),
      0 0 22px var(--neon-pink),
      0 0 44px var(--neon-pink),
      0 0 80px oklch(0.65 0.27 340 / 0.7);
  }
  20%, 24%, 55% {
    opacity: 0.85;
    text-shadow: 0 0 4px oklch(1 0 0 / 0.6), 0 0 10px var(--neon-pink);
  }
}

/* Tags */
.tags {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}
.tag {
  border: 1px solid oklch(0.72 0.27 350 / 0.4);
  background: oklch(0.72 0.27 350 / 0.1);
  color: var(--neon-pink);
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 500;
  box-shadow: 0 0 10px oklch(0.72 0.27 350 / 0.3);
}

/* =========================================================
   Robot
   ========================================================= */
.robot-stage {
  margin-top: 24px;
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  width: 100%;
  height: 256px;
}
@media (min-width: 640px) { .robot-stage { height: 288px; } }

.robot-halo {
  position: absolute;
  left: 50%; top: 50%;
  width: 224px; height: 224px;
  transform: translate(-50%, -50%);
  border-radius: 9999px;
  background: radial-gradient(circle, oklch(0.7 0.25 330 / 0.55), oklch(0.5 0.22 240 / 0.35) 45%, transparent 70%);
  filter: blur(20px);
}
.floor-shadow {
  position: absolute;
  bottom: 8px;
  width: 192px; height: 12px;
  border-radius: 9999px;
  background: radial-gradient(ellipse, oklch(0.85 0.2 340 / 0.55), transparent 70%);
  filter: blur(8px);
}
.robot-wrap {
  position: relative;
  height: 100%;
  filter: drop-shadow(0 0 14px oklch(0.7 0.22 320 / 0.55)) drop-shadow(0 0 30px oklch(0.6 0.22 260 / 0.35));
}
.robot-img {
  position: relative;
  display: block;
  height: 100%;
  width: auto;
  object-fit: contain;
  filter: saturate(0.9) contrast(1.05) brightness(0.92);
}
.robot-light {
  position: absolute;
  inset: 0;
  pointer-events: none;
  -webkit-mask-image: var(--robot-img);
  mask-image: var(--robot-img);
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
}
.robot-light-rim {
  background:
    radial-gradient(ellipse 70% 90% at 15% 40%, oklch(0.75 0.27 350 / 0.7), transparent 60%),
    radial-gradient(ellipse 70% 90% at 85% 55%, oklch(0.85 0.2 215 / 0.6), transparent 60%);
  mix-blend-mode: overlay;
}
.robot-light-top {
  background: linear-gradient(180deg, oklch(0.9 0.18 215 / 0.4), transparent 40%);
  mix-blend-mode: screen;
}
.robot-dance {
  animation: robot-bob 1.1s ease-in-out infinite;
  transform-origin: center bottom;
}
@keyframes robot-bob {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  25%       { transform: translateY(-6px) rotate(2deg); }
  50%       { transform: translateY(0) rotate(-1deg); }
  75%       { transform: translateY(-4px) rotate(3deg); }
}

/* =========================================================
   Description
   ========================================================= */
.description {
  margin: 16px 0 0;
  max-width: 24rem;
  text-align: center;
  font-size: 14px;
  line-height: 1.55;
  color: oklch(0.98 0.01 320 / 0.85);
}
@media (min-width: 640px) { .description { font-size: 16px; } }
.accent-cyan { color: var(--neon-cyan); font-weight: 600; }

/* =========================================================
   Buttons
   ========================================================= */
.ctas {
  margin-top: 28px;
  width: 100%;
  max-width: 24rem;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.btn {
  appearance: none;
  border: none;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: 12px;
  padding: 0 16px;
  height: 48px;
  font-size: 16px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-small {
  height: 40px;
  font-size: 14px;
  padding: 0 16px;
  border-radius: 10px;
}
.btn-pink {
  background: linear-gradient(135deg, oklch(0.78 0.27 350), oklch(0.62 0.27 340));
  color: oklch(0.99 0.01 340);
  box-shadow: var(--shadow-neon-pink);
}
.btn-pink:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 0 18px var(--neon-pink), 0 0 40px var(--neon-pink), 0 0 90px oklch(0.72 0.27 350 / 0.6);
}
.btn-pink:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-cyan {
  background: transparent;
  color: var(--neon-cyan);
  border: 1.5px solid var(--neon-cyan);
  box-shadow: var(--shadow-neon-cyan), inset 0 0 10px oklch(0.85 0.18 200 / 0.15);
}
.btn-cyan:hover {
  transform: translateY(-2px);
  background: oklch(0.85 0.18 200 / 0.08);
  box-shadow: 0 0 14px var(--neon-cyan), 0 0 32px var(--neon-cyan);
}

/* =========================================================
   AI panel
   ========================================================= */
.ai-panel {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  overflow: hidden;
  transition: grid-template-rows 0.3s ease, opacity 0.3s ease, margin-top 0.3s ease;
  margin-top: 0;
}
.ai-panel.open {
  grid-template-rows: 1fr;
  opacity: 1;
  margin-top: 4px;
}
.ai-panel-inner { min-height: 0; }
.ai-label {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: oklch(0.85 0.18 200 / 0.8);
}
.ai-row { display: flex; gap: 8px; }
.ai-input {
  flex: 1;
  height: 40px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid oklch(0.85 0.18 200 / 0.4);
  background: var(--input-bg);
  color: var(--foreground);
  font: inherit;
  font-size: 14px;
  outline: none;
  box-shadow: inset 0 0 8px oklch(0.85 0.18 200 / 0.15);
}
.ai-input::placeholder { color: oklch(0.98 0.01 320 / 0.35); }
.ai-input:focus { border-color: var(--neon-cyan); }
.ai-hint { margin: 6px 0 0; font-size: 11px; color: var(--foreground-muted); }