/* WildChat — dark, clean, mobile-first */
:root {
  --bg: #0d1117;
  --bg-elevated: #161b22;
  --bg-input: #21262d;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #7d8590;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --bubble-mine: #1f6feb33;
  --bubble-mine-border: #1f6feb;
  --bubble-other: #21262d;
  --bubble-bot: #23863633;
  --bubble-bot-border: #238636;
  --danger: #f85149;
  --success: #3fb950;
  --radius: 12px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  overflow: hidden;
  height: 100vh;
  height: 100dvh;
}

.hidden { display: none !important; }

/* ── Login ────────────────────────────────────────────── */
.screen {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
}

#login-screen {
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 24px;
}

.login-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.login-logo h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.login-subtitle {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 28px;
}

#login-form input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-size: 16px;
  margin-bottom: 12px;
  outline: none;
  transition: border-color 0.15s;
}

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

#login-form input::placeholder {
  color: var(--text-muted);
}

.remember {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
  cursor: pointer;
}

.remember input {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
}

#login-btn {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

#login-btn:hover { background: var(--accent-hover); }
#login-btn:active { transform: scale(0.98); }
#login-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.error-msg {
  color: var(--danger);
  font-size: 14px;
  margin-top: 12px;
  min-height: 20px;
  text-align: center;
}

/* ── Chat ─────────────────────────────────────────────── */
#chat-screen {
  height: 100vh;
  height: 100dvh;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  padding-top: max(12px, var(--safe-top));
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.chat-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 17px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 6px var(--success);
}

.status-dot.offline { background: var(--danger); box-shadow: 0 0 6px var(--danger); }

.chat-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.conn-status {
  font-size: 12px;
  color: var(--text-muted);
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  display: flex;
  align-items: center;
}

.icon-btn:hover { color: var(--text); background: var(--bg-input); }

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  padding-bottom: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  -webkit-overflow-scrolling: touch;
}

/* ── Message bubbles ──────────────────────────────────── */
.msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 15px;
  word-wrap: break-word;
  word-break: break-word;
  animation: fadeIn 0.2s ease;
}

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

.msg-header {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 2px;
  color: var(--accent);
}

.msg-header.bot { color: #3fb950; }

.msg-time {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.msg.mine {
  align-self: flex-end;
  background: var(--bubble-mine);
  border: 1px solid var(--bubble-mine-border);
  border-bottom-right-radius: 4px;
}

.msg.mine .msg-header { color: var(--accent-hover); }

.msg.other {
  align-self: flex-start;
  background: var(--bubble-other);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.msg.bot {
  align-self: flex-start;
  background: var(--bubble-bot);
  border: 1px solid var(--bubble-bot-border);
  border-bottom-left-radius: 4px;
}

.msg.bot .msg-header { color: #3fb950; }

/* ── Typing indicator ─────────────────────────────────── */
.typing-indicator {
  padding: 4px 16px;
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
  flex-shrink: 0;
}

/* ── Composer ─────────────────────────────────────────── */
.composer {
  padding: 8px 12px;
  padding-bottom: max(8px, var(--safe-bottom));
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.message-form {
  display: flex;
  gap: 8px;
  align-items: center;
}

#message-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 10px 16px;
  color: var(--text);
  font-size: 16px;
  outline: none;
  transition: border-color 0.15s;
}

#message-input:focus { border-color: var(--accent); }
#message-input::placeholder { color: var(--text-muted); }

.send-btn {
  background: var(--accent);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s, transform 0.1s;
}

.send-btn:hover { background: var(--accent-hover); }
.send-btn:active { transform: scale(0.92); }
.send-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Scrollbar ────────────────────────────────────────── */
.messages::-webkit-scrollbar { width: 4px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── Loading state ────────────────────────────────────── */
.loading {
  text-align: center;
  color: var(--text-muted);
  padding: 20px;
  font-size: 14px;
}