:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1f232c;
  --text: #e7eaf0;
  --muted: #9aa3b2;
  --border: #2a2f3a;
  --accent: #7c5cff;
  --accent-2: #00d4a8;
  --danger: #ff6b6b;
  --warn: #ffb454;
  --good: #4ade80;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

[data-theme="light"] {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --panel-2: #f0f2f7;
  --text: #1a1d24;
  --muted: #5b6373;
  --border: #e3e6ee;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  transition: background 0.2s ease, color 0.2s ease;
}

.app {
  max-width: 880px;
  margin: 0 auto;
  padding: 28px 20px 80px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}

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

.brand h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.logo {
  font-size: 26px;
  display: inline-block;
  animation: spin 6s linear infinite;
  transform-origin: 50% 50%;
}

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

nav {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.tab {
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 500;
  font-size: 14px;
  transition: all 0.15s ease;
}

.tab:hover {
  color: var(--text);
  background: var(--panel-2);
}

.tab.active {
  background: var(--panel-2);
  color: var(--text);
  border-color: var(--border);
}

.hero h2 {
  margin: 0 0 6px;
  font-size: 26px;
  letter-spacing: -0.02em;
}

.sub {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

.panel {
  display: none;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  animation: fadeIn 0.2s ease;
}

.panel.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.row {
  display: flex;
  align-items: center;
  margin-top: 16px;
}

.row.gap {
  gap: 10px;
  flex-wrap: wrap;
}

.modes {
  display: inline-flex;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  gap: 2px;
}

.mode,
.retro-type {
  background: transparent;
  color: var(--muted);
  border: 0;
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s ease;
}

.mode:hover,
.retro-type:hover {
  color: var(--text);
}

.mode.active,
.retro-type.active {
  background: var(--accent);
  color: white;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.opt {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border 0.15s ease;
}

.opt:focus {
  border-color: var(--accent);
}

button {
  font-family: inherit;
  font-size: 14px;
}

.primary {
  background: var(--accent);
  color: white;
  border: 0;
  padding: 11px 18px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.1s ease, opacity 0.15s ease;
}

.primary:hover {
  opacity: 0.92;
}

.primary:active {
  transform: scale(0.98);
}

.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
}

.ghost:hover {
  background: var(--panel-2);
}

.danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
}

.danger:hover {
  background: rgba(255, 107, 107, 0.1);
}

.as-label {
  display: inline-block;
  cursor: pointer;
  user-select: none;
}

.as-label:hover {
  background: var(--panel-2);
}

.result {
  margin-top: 22px;
  padding: 18px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  animation: fadeIn 0.25s ease;
}

.result h3 {
  margin: 0 0 10px;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.result .argue {
  display: grid;
  gap: 10px;
  margin: 14px 0;
}

.argue .pro,
.argue .con {
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  font-size: 14px;
}

.argue .pro {
  border-left: 3px solid var(--good);
}

.argue .con {
  border-left: 3px solid var(--danger);
}

.pick {
  margin-top: 12px;
  padding: 14px;
  background: var(--accent);
  color: white;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 16px;
}

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

.q label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.q label .hint {
  color: var(--muted);
  font-weight: 400;
  font-size: 13px;
  margin-left: 6px;
}

.q input,
.q textarea {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 11px 13px;
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  resize: vertical;
  transition: border 0.15s ease;
}

.q input:focus,
.q textarea:focus {
  border-color: var(--accent);
}

.history {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.entry {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
}

.entry .meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.entry .meta .tag {
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--muted);
}

.entry .meta .when {
  font-size: 12px;
  color: var(--muted);
}

.entry .pick-line {
  font-weight: 600;
  margin-top: 4px;
}

.entry .answers {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
  font-size: 14px;
}

.entry .answers div span {
  color: var(--muted);
  margin-right: 4px;
}

.empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--muted);
}

footer {
  text-align: center;
  margin-top: 28px;
  color: var(--muted);
  font-size: 12px;
}

.hidden {
  display: none;
}

#apiKeyBar input {
  flex: 1;
  min-width: 220px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
}

#apiKeyBar input:focus {
  border-color: var(--accent);
}

@media (max-width: 540px) {
  .hero h2 {
    font-size: 22px;
  }
  header {
    margin-bottom: 18px;
  }
}