:root {
  --bg: #10121a;
  --bg-elevated: #181b26;
  --accent: #5ac8ff;
  --text: #e8eaf0;
  --text-dim: #9aa0b4;
  --bubble-user: #2b3550;
  --bubble-assistant: #1c2030;
  --danger: #ff6b6b;
  --radius: 14px;
}

* { box-sizing: border-box; }

[hidden] {
  display: none !important;
}

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.screen {
  height: 100dvh;
  display: flex;
  flex-direction: column;
}

.screen[hidden] {
  display: none;
}

/* Login */
#login-screen {
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 340px;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-card h1 {
  margin: 0;
  text-align: center;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.subtitle {
  margin: 0 0 8px;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.login-card input {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #2a2f42;
  background: #0d0f16;
  color: var(--text);
  font-size: 1rem;
}

.login-card button {
  margin-top: 4px;
  padding: 12px;
  border-radius: 10px;
  border: none;
  background: var(--accent);
  color: #04121a;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
}

.error {
  color: var(--danger);
  font-size: 0.85rem;
  text-align: center;
  margin: 0;
}

/* Chat header */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  padding-top: max(14px, env(safe-area-inset-top));
  background: var(--bg-elevated);
  border-bottom: 1px solid #22263a;
}

.chat-header .title {
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}

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

.speak-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

#logout-btn {
  background: none;
  border: 1px solid #2a2f42;
  color: var(--text-dim);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.8rem;
  cursor: pointer;
}

/* Messages */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.msg {
  max-width: 82%;
  padding: 10px 14px;
  border-radius: var(--radius);
  line-height: 1.4;
  white-space: pre-wrap;
  word-wrap: break-word;
  position: relative;
}

.msg.user {
  align-self: flex-end;
  background: var(--bubble-user);
  border-bottom-right-radius: 4px;
}

.msg.assistant {
  align-self: flex-start;
  background: var(--bubble-assistant);
  border-bottom-left-radius: 4px;
}

.msg.system-note {
  align-self: center;
  background: none;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.msg .speak-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.85rem;
  margin-left: 6px;
  vertical-align: middle;
}

/* Confirm banner */
.confirm-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: #2a2013;
  border-top: 1px solid #4a3a1c;
  padding: 12px 16px;
  font-size: 0.9rem;
}

.confirm-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.confirm-actions button {
  border: none;
  border-radius: 8px;
  padding: 8px 12px;
  font-weight: 600;
  cursor: pointer;
}

#confirm-yes { background: var(--accent); color: #04121a; }
#confirm-no { background: #333846; color: var(--text); }

/* Input bar */
.chat-input {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  padding-bottom: max(10px, env(safe-area-inset-bottom));
  background: var(--bg-elevated);
  border-top: 1px solid #22263a;
}

.chat-input input[type="text"] {
  flex: 1;
  padding: 12px 14px;
  border-radius: 20px;
  border: 1px solid #2a2f42;
  background: #0d0f16;
  color: var(--text);
  font-size: 1rem;
}

#mic-btn, #send-btn {
  border: none;
  border-radius: 20px;
  padding: 10px 14px;
  font-size: 1rem;
  cursor: pointer;
}

#mic-btn {
  background: #262b3d;
  color: var(--text);
}

#mic-btn.recording {
  background: var(--danger);
  color: #fff;
}

#send-btn {
  background: var(--accent);
  color: #04121a;
  font-weight: 600;
}