/* -- projd site -- */

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --dim: #8b949e;
  --cyan: #58a6ff;
  --green: #3fb950;
  --yellow: #d29922;
  --red: #f85149;
  --purple: #6B5CE7;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", "Cascadia Code", monospace;
  --max-w: 960px;
  --section-pad: 80px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: var(--section-pad) 0;
}

/* -- Section animations -- */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* -- Hero -- */

.hero {
  padding: 120px 0 var(--section-pad);
  text-align: center;
}

.hero-title {
  font-family: var(--font-mono);
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 16px;
}

.hero-title .accent { color: var(--purple); }

.hero-tagline {
  font-size: 1.25rem;
  color: var(--dim);
  max-width: 640px;
  margin: 0 auto 16px;
}

.hero-pitch {
  font-size: 1.05rem;
  color: var(--dim);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: background 0.2s, transform 0.1s;
  border: none;
  cursor: pointer;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--purple);
  color: #fff;
}
.btn-primary:hover { background: #7d6ff0; }

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: #1c2129; }

/* -- Problem section -- */

.problem { text-align: center; }

.problem h2 {
  font-size: 1.75rem;
  margin-bottom: 48px;
  color: var(--text);
}

.problem-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.problem-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px 24px;
}

.problem-card .icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.problem-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text);
}

.problem-card p {
  font-size: 0.9rem;
  color: var(--dim);
  line-height: 1.6;
}

.problem-transition {
  font-size: 1.15rem;
  color: var(--cyan);
  font-weight: 500;
}

/* -- Feature grid -- */

.features { text-align: center; }

.features h2 {
  font-size: 1.75rem;
  margin-bottom: 48px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px 20px;
  text-align: left;
}

.feature-card .icon {
  width: 36px;
  height: 36px;
  margin-bottom: 12px;
  color: var(--cyan);
}

.feature-card h3 {
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 0.85rem;
  color: var(--dim);
  line-height: 1.5;
}

.feature-secondary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-secondary .feature-pill {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--dim);
  text-align: left;
}

.feature-pill strong {
  color: var(--text);
  display: block;
  margin-bottom: 2px;
  font-size: 0.85rem;
}

/* -- Workflow section -- */

.workflow { text-align: center; }

.workflow h2 {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.workflow-subtitle {
  color: var(--dim);
  margin-bottom: 32px;
  font-size: 0.95rem;
}

.workflow-tabs {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-bottom: 32px;
}

.workflow-tab {
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--dim);
  background: transparent;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-sans);
}

.workflow-tab:hover { color: var(--text); border-color: var(--dim); }

.workflow-tab.active {
  background: var(--purple);
  color: #fff;
  border-color: var(--purple);
}

.workflow-panel { display: none; }
.workflow-panel.active { display: block; }

/* Sequence diagram */

.seq-diagram {
  display: flex;
  justify-content: center;
  gap: 0;
  position: relative;
  padding: 0 20px;
  min-height: 400px;
}

.seq-lane {
  flex: 1;
  max-width: 200px;
  position: relative;
  text-align: center;
}

.seq-actor {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: inline-block;
  margin-bottom: 16px;
  color: var(--cyan);
}

.seq-lifeline {
  position: absolute;
  top: 44px;
  left: 50%;
  width: 2px;
  bottom: 0;
  background: var(--border);
  transform: translateX(-50%);
}

.seq-messages {
  position: relative;
  text-align: left;
  width: 100%;
}

.seq-msg {
  position: relative;
  padding: 6px 0;
  opacity: 0;
  animation: seq-fade-in 0.4s ease forwards;
}

.seq-msg-label {
  font-size: 0.75rem;
  color: var(--dim);
  position: absolute;
  white-space: nowrap;
  top: -2px;
}

.seq-msg-arrow {
  height: 2px;
  background: var(--cyan);
  margin: 12px 0;
  position: relative;
}

.seq-msg-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -4px;
  border: 5px solid transparent;
  border-left-color: var(--cyan);
}

.seq-msg-arrow.left::after {
  right: auto;
  left: -1px;
  border-left-color: transparent;
  border-right-color: var(--cyan);
}

.seq-msg-badge {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin: 4px 0;
}

.badge-green { background: rgba(63, 185, 80, 0.15); color: var(--green); }
.badge-yellow { background: rgba(210, 153, 34, 0.15); color: var(--yellow); }
.badge-cyan { background: rgba(88, 166, 255, 0.15); color: var(--cyan); }
.badge-purple { background: rgba(107, 92, 231, 0.15); color: var(--purple); }
.badge-red { background: rgba(248, 81, 73, 0.15); color: var(--red); }

@keyframes seq-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Simplified workflow diagrams using a vertical step list */

.workflow-steps {
  max-width: 600px;
  margin: 0 auto;
  text-align: left;
}

.wf-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 0;
  opacity: 0;
  transform: translateX(-12px);
  transition: all 0.4s ease;
}

.wf-step.visible {
  opacity: 1;
  transform: translateX(0);
}

.wf-step-marker {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  position: relative;
}

.wf-step-marker.actor-you { background: rgba(107, 92, 231, 0.2); color: var(--purple); }
.wf-step-marker.actor-agent { background: rgba(88, 166, 255, 0.2); color: var(--cyan); }
.wf-step-marker.actor-dispatch { background: rgba(210, 153, 34, 0.2); color: var(--yellow); }
.wf-step-marker.actor-review { background: rgba(63, 185, 80, 0.2); color: var(--green); }

.wf-step-content h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.wf-step-content p {
  font-size: 0.8rem;
  color: var(--dim);
}

.wf-connector {
  width: 2px;
  height: 16px;
  background: var(--border);
  margin-left: 15px;
}

.wf-parallel-group {
  border-left: 2px solid var(--yellow);
  margin-left: 15px;
  padding-left: 20px;
  position: relative;
}

.wf-parallel-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--yellow);
  position: absolute;
  left: -50px;
  top: 50%;
  transform: translateY(-50%) rotate(-90deg);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* -- Examples section -- */

.examples h2 {
  font-size: 1.75rem;
  text-align: center;
  margin-bottom: 12px;
}

.examples-subtitle {
  text-align: center;
  color: var(--dim);
  margin-bottom: 48px;
  font-size: 0.95rem;
}

.example-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.example-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.example-panel.full-width {
  grid-column: 1 / -1;
}

.example-label {
  padding: 12px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--dim);
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.example-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.7;
  overflow-x: auto;
}

/* JSON syntax highlighting */
.json-key { color: var(--cyan); }
.json-string { color: var(--green); }
.json-number { color: var(--yellow); }
.json-bracket { color: var(--dim); }
.json-bool { color: var(--purple); }

/* Callout annotations */
.callout {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  color: var(--yellow);
  border: 1px solid rgba(210, 153, 34, 0.3);
  background: rgba(210, 153, 34, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 12px;
  white-space: nowrap;
}

/* Wave diagram */
.wave-diagram {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 16px;
  align-items: center;
}

.wave-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.wave-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--dim);
  width: 56px;
  text-align: right;
  flex-shrink: 0;
}

.wave-box {
  padding: 8px 16px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  border: 1px solid var(--border);
}

.wave-box.done { background: rgba(63, 185, 80, 0.1); color: var(--green); border-color: rgba(63, 185, 80, 0.3); }
.wave-box.wip { background: rgba(210, 153, 34, 0.1); color: var(--yellow); border-color: rgba(210, 153, 34, 0.3); }
.wave-box.pending { background: rgba(139, 148, 158, 0.1); color: var(--dim); border-color: var(--border); }

.wave-arrow {
  color: var(--dim);
  font-size: 1.2rem;
}

/* Monitor mockup */
.monitor-mockup {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--text);
  padding: 16px 20px;
  overflow-x: auto;
}

.monitor-header {
  color: var(--dim);
  margin-bottom: 12px;
}

.monitor-header .spinner {
  display: inline-block;
  width: 1ch;
}

.monitor-progress {
  margin-bottom: 12px;
}

.progress-bar {
  display: inline-block;
}

.progress-fill { color: var(--green); }
.progress-empty { color: var(--border); }

.monitor-table {
  width: 100%;
  border-collapse: collapse;
}

.monitor-table th {
  text-align: left;
  color: var(--dim);
  font-weight: 600;
  font-size: 0.7rem;
  padding: 4px 8px 4px 0;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.monitor-table td {
  padding: 6px 8px 6px 0;
  font-size: 0.75rem;
  border-bottom: 1px solid rgba(48, 54, 61, 0.4);
}

.monitor-table .selected {
  background: rgba(88, 166, 255, 0.08);
}

.state-done { color: var(--green); }
.state-wip { color: var(--yellow); }
.state-pending { color: var(--dim); }
.state-blocked { color: var(--red); }
.branch-name { color: var(--cyan); }
.token-count { color: var(--dim); }

.monitor-hints {
  margin-top: 12px;
  color: var(--dim);
  font-size: 0.7rem;
}

.monitor-hints kbd {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text);
}

/* PR result */
.pr-list {
  list-style: none;
}

.pr-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(48, 54, 61, 0.4);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.pr-list li:last-child { border-bottom: none; }

.pr-number { color: var(--dim); }
.pr-name { color: var(--text); flex: 1; }
.pr-branch { color: var(--cyan); font-size: 0.75rem; }

.pr-status {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.pr-merged { background: rgba(107, 92, 231, 0.15); color: var(--purple); }
.pr-review { background: rgba(210, 153, 34, 0.15); color: var(--yellow); }

/* -- Comparison section -- */

.comparison { text-align: center; }

.comparison h2 {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.comparison-subtitle {
  color: var(--dim);
  margin-bottom: 32px;
  font-size: 0.95rem;
}

.table-wrap {
  overflow-x: auto;
  margin-bottom: 48px;
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  min-width: 800px;
  border-collapse: collapse;
  font-size: 0.8rem;
  text-align: left;
}

.comparison-table th {
  padding: 12px 10px;
  font-weight: 600;
  border-bottom: 2px solid var(--border);
  color: var(--dim);
  font-size: 0.75rem;
  white-space: nowrap;
  position: sticky;
  top: 0;
  background: var(--bg);
}

.comparison-table th.highlight {
  color: var(--purple);
  border-bottom-color: var(--purple);
}

.comparison-table td {
  padding: 10px 10px;
  border-bottom: 1px solid var(--border);
  color: var(--dim);
  vertical-align: top;
}

.comparison-table td.highlight {
  color: var(--text);
  background: rgba(107, 92, 231, 0.04);
}

.comparison-table tr:last-child td { border-bottom: none; }

.comparison-table .row-label {
  color: var(--text);
  font-weight: 600;
  white-space: nowrap;
}

.check { color: var(--green); }
.cross { color: var(--dim); }
.partial { color: var(--yellow); }

.diff-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  text-align: left;
}

.diff-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}

.diff-card h3 {
  font-size: 0.95rem;
  margin-bottom: 8px;
  color: var(--text);
}

.diff-card p {
  font-size: 0.85rem;
  color: var(--dim);
  line-height: 1.5;
}

/* -- Use cases section -- */

.use-cases { text-align: center; }

.use-cases h2 {
  font-size: 1.75rem;
  margin-bottom: 48px;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.use-case-caveat {
  font-size: 0.85rem;
  color: var(--dim);
  font-style: italic;
}

/* -- Quick start -- */

.quickstart { text-align: center; }

.quickstart h2 {
  font-size: 1.75rem;
  margin-bottom: 32px;
}

.prereqs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}

.prereq {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
}

.prereq-name {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.prereq-install {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--dim);
}

.quickstart-oneliner {
  margin-top: 24px;
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 600;
}

.quickstart-code {
  margin: 12px auto 0;
  max-width: 720px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--green);
  word-break: break-all;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 12px;
}

.quickstart-code code { flex: 1; }

.copy-btn {
  flex-shrink: 0;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 8px;
  color: var(--dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, border-color 0.2s;
}

.copy-btn:hover { color: var(--text); border-color: var(--dim); }

.copy-btn .check-icon { display: none; }

.copy-btn.copied { color: var(--green); border-color: var(--green); }
.copy-btn.copied .copy-icon { display: none; }
.copy-btn.copied .check-icon { display: block; }

.quickstart-note {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--dim);
}

.quickstart-note code {
  color: var(--cyan);
  font-size: 0.82rem;
}

.quickstart-links {
  margin-top: 32px;
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.quickstart-links a {
  font-size: 0.9rem;
  color: var(--cyan);
}

/* -- Footer -- */

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

.footer-motto {
  font-size: 1rem;
  color: var(--dim);
  margin-bottom: 16px;
  font-style: italic;
}

.footer-links {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-bottom: 16px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--dim);
}

.footer-links a:hover { color: var(--text); }

.footer-attr {
  font-size: 0.75rem;
  color: var(--dim);
}

/* -- Responsive -- */

@media (max-width: 768px) {
  :root { --section-pad: 56px; }

  .hero-title { font-size: 2.5rem; }
  .hero-tagline { font-size: 1.05rem; }

  .problem-cards { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-secondary { grid-template-columns: 1fr 1fr; }
  .example-panels { grid-template-columns: 1fr; }
  .diff-cards { grid-template-columns: 1fr; }
  .use-case-grid { grid-template-columns: 1fr; }
  .prereqs { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-secondary { grid-template-columns: 1fr; }
  .prereqs { grid-template-columns: 1fr; }
  .footer-links { flex-direction: column; gap: 12px; }
}

/* -- Reduced motion -- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html { scroll-behavior: auto; }

  .fade-in {
    opacity: 1;
    transform: none;
  }
}