/* acq — веб-чат, PWA-готовый */
:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-input: #334155;
  --fg: #e2e8f0;
  --fg-dim: #94a3b8;
  --accent: #a5b4fc;
  --accent-hover: #818cf8;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --success: #22c55e;
  --warn: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
  --safe-top: env(safe-area-inset-top, 0);
  --safe-bottom: env(safe-area-inset-bottom, 0);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  overflow: hidden;
}

#app {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.screen {
  display: none;
  flex-direction: column;
  height: 100%;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bottom);
}

.screen.active {
  display: flex;
}

/* ── Логин ── */
#login-screen {
  justify-content: center;
  align-items: center;
  padding: 16px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.logo {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin: 0 0 24px;
  color: var(--accent);
}

.auth-mode {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-bottom: 16px;
}

.auth-mode label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  color: var(--fg-dim);
}

.auth-mode input { accent-color: var(--accent); }

.login-card input[type="text"],
.login-card input[type="password"] {
  width: 100%;
  padding: 14px 16px;
  margin-bottom: 12px;
  border: 1px solid var(--bg-input);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--fg);
  font-size: 1rem;
}

.login-card input::placeholder { color: var(--fg-dim); }

.remember {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  color: var(--fg-dim);
  cursor: pointer;
}

.remember input { accent-color: var(--accent); }

#btn-connect {
  width: 100%;
  padding: 14px;
  font-size: 1.1rem;
  font-weight: 600;
}

.login-card .status {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--fg-dim);
  text-align: center;
}

.login-card .status.error { color: #ef4444; }
.login-card .status.ok { color: var(--success); }

/* ── Кнопки ── */
.btn {
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 1rem;
  cursor: pointer;
  background: var(--bg-input);
  color: var(--fg);
  transition: background 0.2s;
}

.btn.primary {
  background: var(--accent);
  color: #0f172a;
}

.btn.primary:hover { background: var(--accent-hover); }

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

.btn.danger:hover { background: var(--danger-hover); }

.btn.small { padding: 8px 12px; font-size: 0.9rem; }

.btn.icon {
  width: 48px;
  min-width: 48px;
  padding: 10px;
  font-size: 1.2rem;
}

/* ── Чат ── */
.chat-header {
  flex-shrink: 0;
  padding: 12px 16px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--bg-input);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.app-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  margin-right: 24px;
}

#room-label {
  font-weight: 700;
  font-size: 1rem;
  margin-right: 8px;
}

.room-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

#room-input {
  width: 120px;
  min-width: 80px;
  padding: 8px 12px;
  border: 1px solid var(--bg-input);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--fg);
  font-size: 0.95rem;
}

.chat-log {
  flex: 1;
  overflow-y: auto;
  padding: 12px 16px;
  font-family: "Consolas", "Monaco", monospace;
  font-size: 14px;
  line-height: 1.5;
  word-wrap: break-word;
  -webkit-overflow-scrolling: touch;
}

.chat-log .line {
  margin-bottom: 4px;
  white-space: pre-wrap;
  word-break: break-word;
}

.chat-log .line.mine { color: var(--accent); }

.chat-log .line.system { color: var(--fg-dim); }

.chat-log .line .emoji {
  font-size: 1.5em;
  vertical-align: middle;
  display: inline-block;
  line-height: 1.2;
}

.chat-log .line .chat-image {
  max-width: 100%;
  max-height: 400px;
  border-radius: var(--radius-sm);
  margin: 8px 0;
  display: block;
  cursor: pointer;
  object-fit: contain;
  background: var(--bg-input);
  padding: 4px;
}

.chat-log .line .chat-image:hover {
  opacity: 0.9;
}

.chat-log .line a {
  color: var(--accent);
  text-decoration: underline;
}

.chat-input-wrap {
  flex-shrink: 0;
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  padding-bottom: calc(12px + var(--safe-bottom));
  background: var(--bg-card);
  border-top: 1px solid var(--bg-input);
  align-items: center;
}

#msg-input {
  flex: 1;
  min-width: 0;
  padding: 12px 16px;
  border: 1px solid var(--bg-input);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--fg);
  font-size: 1rem;
}

#msg-input::placeholder { color: var(--fg-dim); }

/* Мобильная адаптация */
@media (max-width: 480px) {
  .login-card { padding: 24px 20px; }
  .logo { font-size: 2rem; }
  .room-actions { width: 100%; }
  #room-input { flex: 1; }
  .chat-input-wrap { padding: 10px 12px; }
  .btn.icon { width: 44px; min-width: 44px; }
}

/* PWA standalone */
@media (display-mode: standalone) {
  .chat-header { padding-top: max(12px, var(--safe-top)); }
}

body.standalone {
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

body.standalone .chat-log {
  -webkit-overflow-scrolling: touch;
}