:root {
  color-scheme: light;
  --bg-primary: #ffffff;
  --bg-secondary: #f9f9f9;
  --text-primary: #000000;
  --text-secondary: #666666;
  --border: #eaeaec;
  --accent: #000000;
  --font-heading: 'Instrument Serif', serif;
  --font-body: 'Poppins', sans-serif;
  --radius: 12px;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.masthead, main {
  max-width: 1200px;
  margin: auto;
  padding-left: 5%;
  padding-right: 5%;
}

.masthead {
  height: 90px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  animation: fadeIn 0.6s ease-out;
}

.brand {
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 2rem;
  text-decoration: none;
  font-style: italic;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand span {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-style: normal;
  color: var(--text-secondary);
}

.github {
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color var(--transition-fast);
  font-weight: 500;
}
.github:hover {
  color: var(--text-primary);
}

.hero {
  max-width: 850px;
  padding: 120px 0 60px;
  animation: fadeIn 0.8s ease-out;
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(3.5rem, 8vw, 6.5rem);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.02em;
}

.lede {
  max-width: 600px;
  margin: 32px 0;
  color: var(--text-secondary);
  font-size: 1.15rem;
  font-weight: 300;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  padding-top: 40px;
}

.stats span {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stats strong {
  color: var(--text-primary);
  font-size: 1.8rem;
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1;
}

.notice {
  display: flex;
  gap: 32px;
  padding: 24px 32px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 60px;
  animation: fadeIn 1s ease-out;
}

.notice strong {
  flex: 0 0 200px;
  color: var(--text-primary);
  font-weight: 500;
}

.controls {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr auto;
  gap: 16px;
  align-items: end;
  padding: 0 0 32px;
  border-bottom: 1px solid var(--border);
}

.controls label {
  display: grid;
  gap: 10px;
  color: var(--text-primary);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.controls input, .controls select, button {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  transition: all var(--transition-fast);
}

.controls input, .controls select {
  width: 100%;
  padding: 16px 20px;
  font-size: 0.95rem;
}

.controls input:focus, .controls select:focus, button:focus-visible {
  outline: none;
  border-color: var(--text-primary);
  box-shadow: 0 0 0 1px var(--text-primary);
}

.controls input::placeholder {
  color: #a0a0a0;
  font-weight: 300;
}

button {
  cursor: pointer;
}

.quiet {
  padding: 16px 24px;
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
}

.quiet:hover {
  background: var(--bg-secondary);
}

.result-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 32px 0;
}

.result-head p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.task-card {
  padding: 32px;
  text-align: left;
  border: 1px solid var(--border);
  background: var(--bg-primary);
  border-radius: var(--radius);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
  animation: fadeIn 0.5s ease-out forwards;
  opacity: 0;
}

/* Stagger animation for task cards */
.task-card:nth-child(1) { animation-delay: 0.1s; }
.task-card:nth-child(2) { animation-delay: 0.15s; }
.task-card:nth-child(3) { animation-delay: 0.2s; }
.task-card:nth-child(4) { animation-delay: 0.25s; }
.task-card:nth-child(n+5) { animation-delay: 0.3s; }

.task-card:hover {
  border-color: var(--text-primary);
  box-shadow: 0 12px 32px rgba(0,0,0,0.06);
  transform: translateY(-4px);
}

.task-id {
  display: block;
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.task-title {
  display: block;
  margin: 16px 0;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 400;
  line-height: 1.1;
}

.task-meta {
  display: block;
  color: var(--text-secondary);
  font-size: 0.85rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.more {
  display: block;
  margin: 60px auto 100px;
  padding: 16px 32px;
  background: var(--text-primary);
  color: var(--bg-primary);
  border: none;
  border-radius: 40px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.more:hover {
  transform: scale(1.02);
  background: #222;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
}

dialog {
  width: min(850px, calc(100% - 40px));
  max-height: calc(100vh - 40px);
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-primary);
  box-shadow: 0 32px 80px rgba(0,0,0,0.15);
  color: var(--text-primary);
  font-family: var(--font-body);
}

dialog::backdrop {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
}

#task-detail {
  padding: 60px;
}

#task-detail h2 {
  margin: 0 0 24px;
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.route {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--text-secondary);
  font: 0.85rem/1.6 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  background: var(--bg-secondary);
  padding: 10px 16px;
  border-radius: 6px;
  display: inline-block;
  border: 1px solid var(--border);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 40px 0 48px;
}

.actions a, .copy {
  padding: 12px 20px;
  border: 1px solid var(--border);
  border-radius: 40px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy:hover, .actions a:hover {
  border-color: var(--text-primary);
  background: var(--bg-secondary);
}

#task-detail section {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

#task-detail h3 {
  margin: 0 0 16px;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--text-primary);
}

#task-detail p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

.safety {
  padding: 24px !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius);
  background: var(--bg-secondary);
}

.close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border: none;
  background: var(--bg-secondary);
  border-radius: 50%;
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.close:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
  transform: rotate(90deg);
}

@media(max-width: 768px) {
  .hero h1 {
    font-size: 3rem;
  }
  .notice {
    flex-direction: column;
    gap: 12px;
    padding: 20px;
  }
  .controls {
    grid-template-columns: 1fr;
  }
  .results {
    grid-template-columns: 1fr;
  }
  #task-detail {
    padding: 40px 24px;
  }
  #task-detail h2 {
    font-size: 2.2rem;
  }
}