:root {
  --bg: #071321;
  --panel: #0e2238;
  --panel-border: #3ec1ff;
  --text: #eaf7ff;
  --muted: #9bc4df;
  --accent: #22d3ee;
  --accent-2: #06b6d4;
  --danger: #f97316;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background: radial-gradient(circle at 20% 20%, #0f3f66 0%, transparent 40%),
    radial-gradient(circle at 80% 10%, #4c1d95 0%, transparent 35%),
    linear-gradient(180deg, #050b14 0%, #071321 100%);
  color: var(--text);
  overflow-x: hidden;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(40px);
  pointer-events: none;
  opacity: 0.35;
  animation: glowDrift 12s ease-in-out infinite alternate;
}

.bg-glow-a {
  width: 280px;
  height: 280px;
  background: #22d3ee;
  top: -60px;
  left: -50px;
}

.bg-glow-b {
  width: 320px;
  height: 320px;
  background: #f97316;
  bottom: -80px;
  right: -60px;
  animation-delay: -6s;
}

@keyframes glowDrift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 20px) scale(1.12); }
}

/* ── Layout ──────────────────────────────────────────────────────── */

.layout {
  position: relative;
  z-index: 1;
  width: min(980px, 92vw);
  margin: 20px auto;
  display: grid;
  gap: 12px;
}

.panel {
  background: linear-gradient(180deg, rgba(20, 43, 69, 0.9) 0%, rgba(11, 27, 44, 0.95) 100%);
  border: 1px solid rgba(62, 193, 255, 0.4);
  border-radius: 16px;
  padding: 14px 18px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35), 0 0 28px rgba(34, 211, 238, 0.08);
  transition: border-color 0.3s;
}

.panel:hover {
  border-color: rgba(62, 193, 255, 0.65);
}

/* ── Brand / Hero ────────────────────────────────────────────────── */

.brand-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo svg {
  width: 40px;
  height: 40px;
  filter: drop-shadow(0 0 10px rgba(34, 211, 238, 0.4));
  animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { filter: drop-shadow(0 0 12px rgba(34, 211, 238, 0.4)); }
  50%      { filter: drop-shadow(0 0 20px rgba(34, 211, 238, 0.7)); }
}

.brand h1 {
  margin: 0;
  font-size: 1.4rem;
  background: linear-gradient(135deg, #22d3ee 0%, #06b6d4 40%, #f97316 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.brand-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.25);
  color: var(--muted);
  letter-spacing: 0.02em;
}

.stat-icon {
  font-size: 0.85rem;
  color: var(--accent);
}

/* ── Typography ──────────────────────────────────────────────────── */

h2 {
  margin: 0 0 12px;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}

/* ── Mode toggle ─────────────────────────────────────────────────── */
.mode-toggle {
  display: flex;
  gap: 0;
  margin-bottom: 14px;
  border: 1px solid rgba(62, 193, 255, 0.35);
  border-radius: 10px;
  overflow: hidden;
}

.mode-btn {
  flex: 1;
  border: 0;
  border-radius: 0;
  padding: 9px 12px;
  background: transparent;
  color: var(--muted);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.mode-btn.active {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #04253c;
}

.mode-btn:not(.active):hover {
  background: rgba(34, 211, 238, 0.1);
}

.mode-section.hidden {
  display: none;
}

/* ── Select / dropdown ───────────────────────────────────────────── */
select {
  width: 100%;
  border: 1px solid rgba(155, 196, 223, 0.35);
  background: rgba(6, 17, 30, 0.85);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
  font-size: 0.95rem;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='%239bc4df'%3E%3Cpath d='M0 0l6 8 6-8z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

select:focus {
  border-color: var(--panel-border);
  box-shadow: 0 0 0 3px rgba(62, 193, 255, 0.2);
}

.grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.92rem;
  color: var(--muted);
}

input {
  width: 100%;
  border: 1px solid rgba(155, 196, 223, 0.35);
  background: rgba(6, 17, 30, 0.85);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
}

input:focus {
  border-color: var(--panel-border);
  box-shadow: 0 0 0 3px rgba(62, 193, 255, 0.2);
}

.row,
.ask-row {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #04253c;
  font-weight: 700;
  cursor: pointer;
  transition: filter 0.2s, transform 0.15s, box-shadow 0.2s;
}

button:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(34, 211, 238, 0.25);
}

button:active {
  transform: translateY(0);
}

button.ghost {
  background: transparent;
  color: #ffd9bf;
  border: 1px solid rgba(249, 115, 22, 0.5);
  box-shadow: none;
}

button.ghost:hover {
  background: rgba(249, 115, 22, 0.1);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.15);
}

.ask-row input {
  flex: 1;
}

.result {
  margin-top: 12px;
  min-height: 110px;
  white-space: pre-wrap;
  background: rgba(5, 14, 24, 0.8);
  border-radius: 10px;
  border: 1px solid rgba(155, 196, 223, 0.25);
  padding: 12px;
  color: #d6f0ff;
  line-height: 1.55;
}

@media (max-width: 760px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .row,
  .ask-row {
    flex-direction: column;
  }

  .brand-row {
    flex-direction: column;
    text-align: center;
  }

  .brand-stats {
    justify-content: center;
  }
}

/* ── Loading spinner overlay ─────────────────────────────────────── */

/* ── Source badges ───────────────────────────────────────────────── */
.source-badges {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.source-badges:empty {
  display: none;
}

.source-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.source-badge.garmin {
  background: rgba(0, 180, 80, 0.2);
  border: 1px solid rgba(0, 180, 80, 0.5);
  color: #66ffaa;
}

.source-badge.trainingpeaks {
  background: rgba(240, 130, 0, 0.2);
  border: 1px solid rgba(240, 130, 0, 0.5);
  color: #ffb866;
}

.source-badge svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* ── Loading spinner overlay ─────────────────────────────────────── */
.spinner-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(5, 11, 20, 0.85);
  backdrop-filter: blur(6px);
  transition: opacity 0.25s;
}

.spinner-overlay.hidden {
  display: none;
}

.spinner {
  width: 52px;
  height: 52px;
  border: 4px solid rgba(34, 211, 238, 0.2);
  border-top-color: var(--accent);
  border-right-color: var(--danger);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-overlay p {
  margin-top: 16px;
  color: var(--muted);
  font-size: 1rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ── History panel ───────────────────────────────────────────────── */
.history-panel {
  max-height: 60vh;
  display: flex;
  flex-direction: column;
}

.history {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.history:empty::after {
  content: "No questions asked yet.";
  color: var(--muted);
  font-size: 0.9rem;
}

.history-entry {
  background: rgba(5, 14, 24, 0.8);
  border: 1px solid rgba(155, 196, 223, 0.2);
  border-radius: 10px;
  padding: 12px;
  animation: slideIn 0.3s ease-out;
}

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

.history-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 0.82rem;
  color: var(--muted);
}

.history-question {
  font-weight: 600;
  color: var(--accent);
}

.history-answer {
  white-space: pre-wrap;
  color: #d6f0ff;
  font-size: 0.92rem;
  margin-top: 6px;
}

/* ── Chat panel accent stripe ────────────────────────────────────── */
.chat-panel {
  position: relative;
  overflow: hidden;
}

.chat-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--danger), var(--accent-2));
  border-radius: 16px 16px 0 0;
}

/* ── Focus glow for inputs ───────────────────────────────────────── */
input:focus,
select:focus {
  border-color: var(--panel-border);
  box-shadow: 0 0 0 3px rgba(62, 193, 255, 0.2), 0 0 12px rgba(34, 211, 238, 0.1);
}

/* ── Footer credit ───────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 18px 0 24px;
  color: rgba(155, 196, 223, 0.4);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}