:root {
  --bg-1: #1a1033;
  --bg-2: #2d1b4e;
  --bg-3: #4a1e4a;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-solid: #241a3d;
  --text: #f3eefc;
  --muted: #b3a2d6;
  --accent: #ffb84d;
  --accent-2: #ff6fb0;
  --accent-3: #9d7bff;
  --user-bubble: linear-gradient(135deg, #7b4fff, #ff6fb0);
  --ai-bubble: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.12);
  --shadow: rgba(20, 8, 40, 0.4);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-1: #fff3f8;
    --bg-2: #f2e9ff;
    --bg-3: #ffe9d6;
    --panel: rgba(255, 255, 255, 0.7);
    --panel-solid: #ffffff;
    --text: #2a1b40;
    --muted: #7a6a95;
    --accent: #e08a1f;
    --accent-2: #e2417f;
    --accent-3: #7b4fff;
    --user-bubble: linear-gradient(135deg, #9d7bff, #ff8fc4);
    --ai-bubble: rgba(255, 255, 255, 0.85);
    --border: rgba(60, 30, 90, 0.12);
    --shadow: rgba(120, 80, 160, 0.15);
  }
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 184, 77, 0.18), transparent 35%),
    radial-gradient(circle at 85% 15%, rgba(255, 111, 176, 0.18), transparent 40%),
    radial-gradient(circle at 50% 90%, rgba(157, 123, 255, 0.2), transparent 45%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2) 55%, var(--bg-3));
  background-attachment: fixed;
}

.auth-gate {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
}

.auth-card {
  width: 100%;
  max-width: 360px;
  text-align: center;
  background: var(--panel);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 2rem 1.75rem;
  box-shadow: 0 8px 30px var(--shadow);
}

.auth-card h1 {
  margin: 0 0 0.4rem;
  font-size: 1.5rem;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.auth-card p { color: var(--muted); margin: 0 0 1.25rem; font-size: 0.9rem; }

#auth-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

#auth-input {
  background: var(--panel-solid);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  padding: 0.7rem 0.9rem;
  font-size: 1rem;
  font-family: inherit;
  text-align: center;
}

#auth-input:focus { outline: none; border-color: var(--accent-3); }

#auth-form button {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  color: #2a1b40;
  border-radius: 12px;
  padding: 0.7rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--shadow);
}

.auth-error { color: #ff6363; font-size: 0.85rem; margin: 0.75rem 0 0; min-height: 1.2em; }

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 720px;
  margin: 0 auto;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(6px);
}

header h1 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: 0.02em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

#settings-link {
  text-decoration: none;
  font-size: 1.1rem;
  opacity: 0.85;
  padding: 0.3rem;
  border-radius: 8px;
}

#settings-link:hover { opacity: 1; background: var(--panel); }

#end-session-btn, .btn-ghost {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 8px;
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  cursor: pointer;
}

#end-session-btn:hover, .btn-ghost:hover { border-color: var(--accent-2); color: var(--accent-2); }

#messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.bubble {
  max-width: 80%;
  padding: 0.65rem 0.9rem;
  border-radius: 16px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-wrap: break-word;
  box-shadow: 0 4px 14px var(--shadow);
}

.bubble.user {
  align-self: flex-end;
  background: var(--user-bubble);
  color: white;
}

.bubble.assistant {
  align-self: flex-start;
  background: var(--ai-bubble);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border);
}

.bubble.system {
  align-self: center;
  color: var(--muted);
  font-size: 0.8rem;
  background: none;
  box-shadow: none;
  text-align: center;
}

.bubble.pending { opacity: 0.6; }

#composer {
  display: flex;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
}

#input {
  flex: 1;
  resize: none;
  background: var(--panel-solid);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  padding: 0.6rem 0.75rem;
  font-size: 0.95rem;
  font-family: inherit;
  max-height: 8rem;
}

#input:focus { outline: none; border-color: var(--accent-3); }

#send-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  color: #2a1b40;
  border-radius: 12px;
  padding: 0 1.2rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--shadow);
}

#send-btn:disabled { opacity: 0.5; cursor: default; }

/* ── Settings page ─────────────────────────────────────────────────── */

#settings-app {
  max-width: 640px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 3rem;
}

.settings-back {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.settings-back:hover { color: var(--accent-2); }

.setting-card {
  background: var(--panel);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
  box-shadow: 0 4px 14px var(--shadow);
}

.setting-card.coming-soon { opacity: 0.7; }

.setting-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.setting-card-header label {
  font-weight: 600;
  font-size: 0.95rem;
}

.badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--panel-solid);
  border: 1px solid var(--border);
  color: var(--muted);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  margin-top: 0.4rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  width: fit-content;
}

.status-pill.ok { background: rgba(76, 217, 123, 0.15); color: #3fbf6f; }
.status-pill.error { background: rgba(255, 99, 99, 0.15); color: #ff6363; }
.status-pill.unknown { background: rgba(180, 180, 180, 0.15); color: var(--muted); }

.setting-row {
  display: flex;
  gap: 0.5rem;
}

.setting-row input {
  flex: 1;
  background: var(--panel-solid);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 0.55rem 0.7rem;
  font-size: 0.9rem;
  font-family: inherit;
}

.setting-row input:focus { outline: none; border-color: var(--accent-3); }

.setting-row button {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  color: #2a1b40;
  border-radius: 10px;
  padding: 0 1rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.setting-row button:disabled { opacity: 0.5; cursor: default; }

.setting-hint { font-size: 0.8rem; color: var(--muted); margin-top: 0.4rem; }