:root {
  --bg: #f7f5f2;
  --surface: #ffffff;
  --text: #141412;
  --muted: #6b6860;
  --faint: #9a9590;
  --accent: #b8956a;
  --accent-weak: rgba(184, 149, 106, 0.12);
  --border: rgba(20, 20, 18, 0.1);
  --terminal: #141412;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans SC", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.lab-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

.lab-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(20, 20, 18, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 20, 18, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 82% 18%, rgba(184, 149, 106, 0.14), transparent 28%);
  background-size: 28px 28px, 28px 28px, auto;
  pointer-events: none;
}

.lab-main {
  position: relative;
  max-width: 1100px;
  padding: 56px 32px 80px;
  margin: 0 auto;
}

.lab-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.lab-label {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
  margin-bottom: 10px;
}

.lab-header h1 {
  margin: 0;
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  line-height: 1.02;
  font-family: "Playfair Display", Georgia, serif;
}

.lab-header p {
  margin: 12px 0 0;
  max-width: 620px;
  line-height: 1.75;
  color: var(--muted);
  font-size: 15px;
}

.lab-badge {
  flex-shrink: 0;
  border: 1px solid rgba(184, 149, 106, 0.24);
  background: rgba(184, 149, 106, 0.08);
  color: var(--accent);
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.browser-card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 24px 60px rgba(20, 20, 18, 0.08);
  backdrop-filter: blur(16px);
  overflow: hidden;
}

.browser-top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(20, 20, 18, 0.03);
  border-bottom: 1px solid var(--border);
}

.browser-dots {
  display: flex;
  gap: 8px;
}

.browser-dots span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(20, 20, 18, 0.16);
}

.browser-title {
  font-size: 13px;
  color: var(--faint);
}

.browser-content {
  padding: 32px;
}

.form-copy h2 {
  margin: 0;
  font-size: 24px;
}

.form-copy p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.7;
  max-width: 620px;
}

.upload-form {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 14px;
  margin-top: 28px;
}

.upload-label {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: min(100%, 420px);
  flex: 1;
  font-size: 13px;
  color: var(--muted);
}

.upload-label input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px dashed rgba(184, 149, 106, 0.45);
  background: linear-gradient(180deg, rgba(184, 149, 106, 0.08), rgba(184, 149, 106, 0.03));
  color: var(--text);
}

#upload-button {
  border: 0;
  border-radius: 16px;
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 26px rgba(184, 149, 106, 0.24);
}

.result-panel {
  margin-top: 28px;
  border-radius: 22px;
  padding: 22px;
  border: 1px solid var(--border);
  background: #fbfaf8;
}

.result-executed {
  box-shadow: inset 0 0 0 1px rgba(34, 197, 94, 0.16);
}

.result-error {
  box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.18);
}

.result-blocked {
  box-shadow: inset 0 0 0 1px rgba(239, 68, 68, 0.16);
}

.result-header {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
}

.result-eyebrow,
.terminal-label {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 11px;
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
}

.result-header h3 {
  margin: 6px 0 0;
  font-size: 20px;
}

.result-status {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-weak);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
}

.terminal-box {
  margin-top: 16px;
  border-radius: 18px;
  padding: 16px;
  background: var(--terminal);
  color: #f7f5f2;
}

.terminal-box pre {
  margin: 10px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 12px;
  line-height: 1.75;
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
}

.gate-panel {
  padding: 56px 32px;
}

.gate-panel h2 {
  margin: 0;
  font-size: 28px;
}

.gate-panel p,
.gate-panel pre {
  margin: 14px 0 0;
  line-height: 1.75;
  color: var(--muted);
}

.coach-dock {
  position: fixed;
  right: 28px;
  bottom: 18px;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.coach-dock.is-hidden {
  display: none;
}

.coach-bubble {
  max-width: 280px;
  padding: 14px 16px;
  border-radius: 20px 20px 4px 20px;
  background: rgba(20, 20, 18, 0.92);
  color: #f7f5f2;
  line-height: 1.7;
  font-size: 13px;
  box-shadow: 0 18px 50px rgba(20, 20, 18, 0.18);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 220ms ease, transform 220ms ease;
}

.coach-bubble.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.coach-figure {
  width: 180px;
  animation: coachFloat 3.2s ease-in-out infinite;
}

.coach-figure img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 16px 24px rgba(20, 20, 18, 0.18));
}

.coach-status {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(184, 149, 106, 0.18);
  background: rgba(255, 255, 255, 0.88);
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 0.14em;
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
}

@keyframes coachFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-7px);
  }
}

@media (max-width: 960px) {
  .lab-main {
    padding: 32px 18px 80px;
  }

  .lab-header {
    flex-direction: column;
  }

  .browser-content,
  .gate-panel {
    padding: 24px 18px;
  }

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

  .coach-dock {
    right: 14px;
    bottom: 12px;
  }

  .coach-figure {
    width: 118px;
  }

  .coach-bubble {
    max-width: min(72vw, 280px);
  }
}