/* wych.ai — The Decision Engine */
/* Dark, confident, editorial minimalism */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@300;400;500&display=swap');

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0A0A0B;
  --bg-elevated: #111113;
  --bg-card: #151517;
  --text-primary: #F0EDE6;
  --text-secondary: #8A8785;
  --text-dim: #555350;
  --border: #222224;
  --border-subtle: #1A1A1C;

  /* Model colors */
  --claude: #E87B35;
  --gpt: #10A37F;
  --gemini: #4285F4;
  --perplexity: #20808D;

  /* Divergence spectrum */
  --diverge-low: #10A37F;
  --diverge-mid: #E87B35;
  --diverge-high: #E05252;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

/* ---- Layout ---- */

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Views ---- */

.view { display: none; }
.view.active { display: block; }

/* ---- Header / Hero ---- */

header {
  padding: 40px 0 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  text-decoration: none;
}

.logo {
  font-family: 'Instrument Serif', serif;
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.logo span {
  color: var(--text-dim);
  font-weight: 400;
}

.site-nav {
  display: flex;
  gap: 24px;
}

.nav-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-dim);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--text-secondary);
}

.nav-link.active {
  color: var(--text-primary);
}

.nav-disabled {
  cursor: default;
  opacity: 0.4;
}

.hero {
  padding: 48px 0 0;
}

.tagline {
  font-family: 'Instrument Serif', serif;
  font-size: 1.5rem;
  font-style: italic;
  color: var(--text-secondary);
  font-weight: 400;
}

.tagline .cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: var(--text-secondary);
  margin-left: 4px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.subtitle {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--text-dim);
  margin-top: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ---- Question Nav ---- */

.question-nav {
  padding: 32px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.question-nav-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.question-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.question-item {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-decoration: none;
  color: inherit;
}

.question-item:hover {
  border-color: var(--text-dim);
  background: var(--bg-elevated);
}

.question-item.active {
  border-color: var(--text-secondary);
  background: var(--bg-card);
}

.question-item-text {
  font-family: 'Instrument Serif', serif;
  font-size: 1.15rem;
  color: var(--text-primary);
  flex: 1;
}

.question-item-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.category-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.model-dots {
  display: flex;
  gap: 4px;
}

.model-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

/* ---- Back Link ---- */

.back-link-wrap {
  padding: 24px 0;
}

.back-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--text-secondary);
}

/* ---- Question Detail ---- */

.panel-header {
  margin-bottom: 40px;
  padding-top: 16px;
}

.panel-category {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.panel-question {
  font-family: 'Instrument Serif', serif;
  font-size: 2rem;
  font-weight: 400;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 16px;
}

/* ---- Divergence Meter ---- */

.divergence-section {
  margin-bottom: 40px;
}

.divergence-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.divergence-value {
  color: var(--text-secondary);
  font-weight: 500;
}

.divergence-bar-track {
  height: 4px;
  background: var(--bg-elevated);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.divergence-bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  width: 0%;
}

.divergence-description {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 8px;
}

/* ---- Model Response Cards ---- */

.responses-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.response-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  background: var(--bg-card);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.response-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.response-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.model-label {
  display: flex;
  align-items: center;
  gap: 10px;
}

.model-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.model-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.verdict {
  font-family: 'Instrument Serif', serif;
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.reasoning {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

/* ---- Confidence Bar ---- */

.confidence-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.confidence-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  min-width: 80px;
}

.confidence-bar-track {
  flex: 1;
  height: 3px;
  background: var(--bg-elevated);
  border-radius: 2px;
  overflow: hidden;
}

.confidence-bar-fill {
  height: 100%;
  border-radius: 2px;
  width: 0%;
  transition: width 1s cubic-bezier(0.22, 1, 0.36, 1);
}

.confidence-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  min-width: 36px;
  text-align: right;
}

/* ---- About Page ---- */

.about-page {
  padding: 48px 0;
  max-width: 680px;
}

.about-title {
  font-family: 'Instrument Serif', serif;
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 48px;
  line-height: 1.2;
}

.about-section {
  margin-bottom: 40px;
}

.about-heading {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.about-text {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 12px;
}

.about-text-dim {
  color: var(--text-dim);
  font-style: italic;
}

.about-submit {
  border-top: 1px solid var(--border-subtle);
  padding-top: 40px;
}

/* ---- Footer ---- */

footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.footer-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}

/* ---- Loading State ---- */

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 0;
}

.loading-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.loading-dots::after {
  content: '';
  animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
  0% { content: ''; }
  25% { content: '.'; }
  50% { content: '..'; }
  75% { content: '...'; }
}

/* ---- Empty State ---- */

.empty-state {
  text-align: center;
  padding: 80px 0;
}

.empty-state p {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  color: var(--text-dim);
  font-size: 1.1rem;
}

/* ---- Responsive ---- */

@media (max-width: 640px) {
  header {
    padding: 24px 0 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .logo {
    font-size: 1.5rem;
  }

  .tagline {
    font-size: 1.2rem;
  }

  .panel-question {
    font-size: 1.5rem;
  }

  .about-title {
    font-size: 1.8rem;
  }

  .question-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .question-item-meta {
    width: 100%;
    justify-content: space-between;
  }

  .response-card {
    padding: 20px;
  }

  .verdict {
    font-size: 1.15rem;
  }

  .container {
    padding: 0 16px;
  }

  .confidence-section {
    flex-wrap: wrap;
  }

  .site-nav {
    gap: 16px;
  }
}