:root {
  --bg-1: #fff3d4;
  --bg-2: #e8f7ff;
  --text: #213451;
  --panel: #ffffff;
  --line: #dce8f5;
  --shadow: 0 14px 34px rgba(22, 48, 80, 0.14);
  --ok: #1f9254;
  --error: #b83c3c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Verdana", sans-serif;
  color: var(--text);
  background: linear-gradient(140deg, var(--bg-1) 0%, var(--bg-2) 60%, #ffe7f6 100%);
  overflow-x: hidden;
}

.bg-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(4px);
  opacity: 0.55;
  z-index: -1;
  pointer-events: none;
  animation: float 10s ease-in-out infinite;
}

.blob-a {
  width: 240px;
  height: 240px;
  left: -70px;
  top: -50px;
  background: radial-gradient(circle at 30% 30%, #ffcf63, #ff9359);
}

.blob-b {
  width: 280px;
  height: 280px;
  right: -110px;
  top: 24%;
  background: radial-gradient(circle at 50% 20%, #8fd4ff, #4ba2ff);
  animation-delay: 1s;
}

.blob-c {
  width: 200px;
  height: 200px;
  left: 32%;
  bottom: -70px;
  background: radial-gradient(circle at 40% 30%, #ffb4e4, #ff6dcf);
  animation-delay: 2s;
}

.app-shell {
  max-width: 1020px;
  margin: 0 auto;
  padding: 30px 16px 40px;
}

.hero {
  text-align: center;
  animation: rise 450ms ease;
}

.hero-badge {
  margin: 0;
  display: inline-block;
  padding: 7px 12px;
  border-radius: 999px;
  background: #ffffffd8;
  font-weight: 700;
  box-shadow: 0 8px 16px rgba(22, 48, 80, 0.1);
}

h1 {
  margin: 12px 0 8px;
  font-size: clamp(2rem, 5vw, 2.9rem);
}

.hero-subtitle {
  margin: 0 auto;
  max-width: 560px;
  line-height: 1.45;
}

.panel {
  margin-top: 18px;
  background: var(--panel);
  border: 2px solid #fff;
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 16px;
  animation: rise 560ms ease both;
}

.panel-head h2 {
  margin: 0;
}

.panel-head p {
  margin: 6px 0 0;
}

.recognize-layout,
.mix-layout,
.lab-layout {
  margin-top: 12px;
  display: grid;
  gap: 12px;
}

.recognize-layout {
  grid-template-columns: 150px minmax(0, 1fr) 170px;
}

.mix-layout {
  grid-template-columns: 150px minmax(0, 1fr) 170px;
}

.target-box {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 16px;
  border: 3px solid #fff;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.12);
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 10px;
}

.mix-option-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(90px, 1fr));
  gap: 10px;
}

.option-btn,
.mix-btn,
.btn {
  border: 2px solid var(--line);
  background: #fff;
  border-radius: 12px;
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  transition: transform 170ms ease, box-shadow 170ms ease;
}

.option-btn,
.mix-btn {
  padding: 10px 8px;
}

.btn {
  padding: 9px 12px;
}

.option-btn:hover,
.option-btn:focus-visible,
.mix-btn:hover,
.mix-btn:focus-visible,
.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(22, 48, 80, 0.16);
  outline: none;
}

.mix-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.28);
}

.mix-btn.active {
  border-color: #1f79ff;
  box-shadow: 0 0 0 3px #1f79ff26;
}

.score-card {
  border: 2px dashed var(--line);
  border-radius: 14px;
  padding: 12px;
  background: #f9fcff;
}

.score-card h3 {
  margin: 0;
}

.score-card p {
  margin: 8px 0 0;
  font-weight: 700;
}

.question,
.mix-name {
  margin: 0 0 10px;
  font-weight: 700;
}

.feedback {
  min-height: 24px;
  margin: 10px 0 0;
  font-weight: 700;
}

.feedback.ok {
  color: var(--ok);
}

.feedback.error {
  color: var(--error);
}

.mix-actions {
  margin-top: 6px;
  display: flex;
  gap: 8px;
}

.primary {
  background: linear-gradient(150deg, #6ab7ff, #3b7dff);
  border-color: #2f67dc;
  color: #fff;
}

.secondary {
  background: #fffdf3;
}

.mix-label,
.tiny {
  margin: 0 0 8px;
  font-size: 0.95rem;
}

.lab-layout {
  grid-template-columns: repeat(2, minmax(170px, 1fr));
  align-items: center;
}

.picker-field {
  display: grid;
  gap: 6px;
  font-weight: 700;
}

.picker-field input {
  width: 100%;
  height: 42px;
  border: 0;
  border-radius: 10px;
  background: transparent;
}

.swatch-group {
  grid-column: span 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(90px, 1fr));
  gap: 10px;
}

.swatch-group p {
  margin: 0 0 6px;
  font-weight: 700;
}

.small-swatch {
  height: 70px;
  border-radius: 12px;
  border: 2px solid #fff;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.15);
}

.mix-code {
  grid-column: span 2;
  margin: 2px 0 0;
  font-weight: 700;
}

.back-home {
  margin: 20px 0 0;
  text-align: center;
}

.back-home a {
  color: #1640a1;
  font-weight: 700;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
  100% {
    transform: translateY(0);
  }
}

@media (max-width: 860px) {
  .recognize-layout,
  .mix-layout {
    grid-template-columns: 1fr;
  }

  .target-box {
    max-width: 180px;
  }

  .lab-layout {
    grid-template-columns: 1fr;
  }

  .swatch-group,
  .mix-code {
    grid-column: span 1;
  }
}