@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=Inter:wght@400;500;600&display=swap');

:root {
  --bg: #0B0E12;
  --panel: #12161C;
  --panel-2: #161B22;
  --border: #232A35;
  --text: #E8EAED;
  --text-dim: #8B93A1;
  --text-faint: #565E6C;

  --amber: #F5A623;
  --green: #3ECF8E;
  --red: #FF5C5C;
  --blue: #5B8DEF;

  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --sans: 'Inter', system-ui, sans-serif;

  --radius: 6px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  background-attachment: fixed;
  background-position: -1px -1px;
  color: var(--text);
  font-family: var(--sans);
  min-height: 100vh;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- Topbar ---------- */

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  background: rgba(11, 14, 18, 0.85);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.wordmark { display: flex; align-items: center; gap: 12px; }
.wordmark-icon { font-size: 22px; color: var(--green); }
.wordmark-title {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 15px;
}
.wordmark-sub {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.02em;
  margin-top: 2px;
}

.mode-toggle {
  display: flex;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3px;
  gap: 3px;
}
.mode-btn {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 7px 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.mode-btn:hover { color: var(--text); }
.mode-btn.active { background: var(--blue); color: #08111F; font-weight: 600; }

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

.layout {
  display: grid;
  grid-template-columns: 1.1fr 1.4fr 0.9fr;
  grid-template-rows: auto 1fr;
  gap: 20px;
  padding: 24px 32px 48px;
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 1000px) {
  .layout { grid-template-columns: 1fr; }
}

.composer-panel { grid-column: 1; grid-row: 1 / 3; }
.relay-panel { grid-column: 2; grid-row: 1; }
.response-panel { grid-column: 2; grid-row: 2; }
.history-panel { grid-column: 3; grid-row: 1 / 3; }

@media (max-width: 1000px) {
  .composer-panel, .relay-panel, .response-panel, .history-panel {
    grid-column: 1; grid-row: auto;
  }
}

.composer-panel, .relay-panel, .response-panel, .history-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  display: flex;
  flex-direction: column;
}

.panel-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 10px;
  display: block;
}
.panel-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ---------- Composer ---------- */

#prompt-input {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  padding: 12px;
  resize: vertical;
  outline: none;
}
#prompt-input:focus { border-color: var(--blue); }

.dropzone {
  margin-top: 14px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 14px;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone.drag-over { border-color: var(--blue); background: rgba(91, 141, 239, 0.06); }
.dropzone-hint { font-size: 12.5px; color: var(--text-dim); }
.dropzone-hint button {
  background: none;
  border: none;
  color: var(--blue);
  cursor: pointer;
  font-size: 12.5px;
  text-decoration: underline;
  padding: 0;
}

.file-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.file-chip {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
}
.file-chip button {
  background: none; border: none; color: var(--red); cursor: pointer; font-size: 12px; padding: 0;
}

.composer-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
}
.vision-note {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--amber);
}
.send-btn {
  margin-left: auto;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.03em;
  background: var(--green);
  color: #06231A;
  border: none;
  border-radius: var(--radius);
  padding: 10px 20px;
  cursor: pointer;
  transition: filter 0.15s;
}
.send-btn:hover { filter: brightness(1.1); }
.send-btn:disabled { background: var(--text-faint); cursor: not-allowed; }

/* ---------- Relay track (the signature element) ---------- */

.relay-count { font-family: var(--mono); font-size: 11px; color: var(--text-faint); }

.relay-track {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  min-height: 64px;
  padding: 8px 4px;
}
.relay-empty { font-size: 13px; color: var(--text-faint); font-family: var(--mono); }

.relay-node {
  display: flex;
  align-items: center;
  gap: 4px;
}
.relay-node-dot {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--panel-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-faint);
  flex-shrink: 0;
  transition: all 0.25s ease;
  position: relative;
}
.relay-node-line {
  width: 18px;
  height: 2px;
  background: var(--border);
  flex-shrink: 0;
  transition: background 0.25s ease;
}
.relay-node.trying .relay-node-dot {
  border-color: var(--amber);
  color: var(--amber);
  animation: pulse 0.9s infinite ease-in-out;
}
.relay-node.success .relay-node-dot {
  border-color: var(--green);
  background: var(--green);
  color: #06231A;
}
.relay-node.success .relay-node-line { background: var(--green); }
.relay-node.fail .relay-node-dot { border-color: var(--red); color: var(--red); opacity: 0.55; }
.relay-node-name {
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--text-faint);
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  max-width: 70px;
  overflow: hidden;
  text-overflow: ellipsis;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(245, 166, 35, 0.35); }
  50% { box-shadow: 0 0 0 6px rgba(245, 166, 35, 0); }
}

/* ---------- Response area ---------- */

.response-area { flex: 1; overflow-y: auto; }
.response-empty { color: var(--text-faint); font-family: var(--mono); font-size: 13px; }

.response-bubble {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 14.5px;
  line-height: 1.55;
  white-space: pre-wrap;
}
.response-bubble-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.race-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.race-card {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  font-size: 13px;
  line-height: 1.5;
}
.race-card.pending { color: var(--text-faint); }
.race-card.success { border-left: 3px solid var(--green); }
.race-card.fail { border-left: 3px solid var(--red); color: var(--text-dim); }
.race-card-name {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--text-dim);
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
}

/* ---------- History ---------- */

.ghost-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 10.5px;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
}
.ghost-btn:hover { color: var(--text); border-color: var(--text-dim); }

.history-list { overflow-y: auto; flex: 1; margin-top: 4px; }
.history-item {
  font-family: var(--mono);
  font-size: 11px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.history-item:last-child { border-bottom: none; }
.history-item-top { display: flex; justify-content: space-between; color: var(--text-dim); }
.history-status-success { color: var(--green); }
.history-status-fail { color: var(--red); }
.history-time { color: var(--text-faint); font-size: 10px; }