:root {
  /* Light defaults */
  --tg-bg: #ffffff;
  --tg-text: #111111;
  --tg-hint: #7d7d7d;
  --tg-link: #2481cc;
  --tg-btn: #2481cc;
  --tg-btn-text: #ffffff;
  --tg-secondary-bg: #f2f2f2;
}

/* Prefer Telegram theme vars when available */
:root[data-theme="light"] {
  --tg-bg: var(--tg-theme-bg-color, #ffffff);
  --tg-text: var(--tg-theme-text-color, #111111);
  --tg-hint: var(--tg-theme-hint-color, #7d7d7d);
  --tg-link: var(--tg-theme-link-color, #2481cc);
  --tg-btn: var(--tg-theme-button-color, #2481cc);
  --tg-btn-text: var(--tg-theme-button-text-color, #ffffff);
  --tg-secondary-bg: var(--tg-theme-secondary-bg-color, #f2f2f2);
}

:root[data-theme="dark"] {
  --tg-bg: var(--tg-theme-bg-color, #0f0f10);
  --tg-text: var(--tg-theme-text-color, #f3f4f6);
  --tg-hint: var(--tg-theme-hint-color, #9aa0a6);
  --tg-link: var(--tg-theme-link-color, #8ab4f8);
  --tg-btn: var(--tg-theme-button-color, #2f81f7);
  --tg-btn-text: var(--tg-theme-button-text-color, #ffffff);
  --tg-secondary-bg: var(--tg-theme-secondary-bg-color, #1b1c1f);
}

* {
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden; /* no outer scroll */
  background: var(--tg-bg);
  color: var(--tg-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

.topbar {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px 8px;
  background: var(--tg-bg);
  z-index: 5;
  border-bottom: 1px solid var(--tg-secondary-bg);
}

.title-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.title {
  font-size: 14px;
  font-weight: 600;
  color: var(--tg-hint);
  letter-spacing: 0.2px;
}

.subtitle {
  font-size: 12px;
  color: var(--tg-hint);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--tg-secondary-bg);
  color: var(--tg-hint);
  font-size: 12px;
  white-space: nowrap;
}

.conn-text {
  font-weight: 600;
}

.conn-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #9aa0a6; /* disconnected */
  box-shadow: 0 0 0 2px var(--tg-secondary-bg);
}

.conn-dot.connected {
  background: #27ae60; /* connected */
}

.conn-dot.connecting {
  background: #f2c94c; /* connecting */
}

.content {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 12px 16px 20px;
}

.content-inner {
  max-width: 720px;
  margin: 0 auto;
}

.fade-in {
  animation: fadeIn 220ms ease-in;
}

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

.center {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  color: var(--tg-hint);
  text-align: center;
  padding: 24px;
}

.empty-card {
  border: 1px dashed var(--tg-secondary-bg);
  border-radius: 14px;
  padding: 18px 16px;
  background: #fff;
}

.spinner {
  width: 26px;
  height: 26px;
  border: 3px solid var(--tg-secondary-bg);
  border-top-color: var(--tg-link);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

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

.button {
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  background: var(--tg-btn);
  color: var(--tg-btn-text);
  font-size: 14px;
  font-weight: 600;
}

@media (max-width: 420px) {
  .topbar {
    padding: 10px 12px 6px;
  }
  .status {
    padding: 4px 8px;
    font-size: 11px;
  }
  .content {
    padding: 10px 12px 18px;
  }
}

/* Terminal overlay — covers everything, canvas preserved underneath */
.terminal-pane {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: #0d1117;
  z-index: 100;
  padding-top: env(safe-area-inset-top, 0);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.terminal-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px 8px;
  background: #161b22;
  border-bottom: 1px solid #30363d;
  flex-shrink: 0;
}

.terminal-topbar-title {
  font-size: 13px;
  font-weight: 600;
  color: #8b949e;
  letter-spacing: 0.2px;
}

.terminal-close-btn {
  background: transparent;
  border: none;
  color: #8b949e;
  font-size: 16px;
  padding: 2px 8px;
  cursor: pointer;
  border-radius: 6px;
  line-height: 1;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
}

#terminal-container {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  padding: 4px;
}

/* Mobile key toolbar */
.term-toolbar {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  background: #161b22;
  border-top: 1px solid #30363d;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  flex-shrink: 0;
  /* hide scrollbar but keep scrollability */
  scrollbar-width: none;
}
.term-toolbar::-webkit-scrollbar { display: none; }

.tbkey {
  flex-shrink: 0;
  background: #21262d;
  color: #c9d1d9;
  border: 1px solid #30363d;
  border-radius: 7px;
  padding: 0 14px;
  height: 36px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  transition: background 120ms, color 120ms;
}

.tbkey-arrow {
  padding: 0 10px;
  font-size: 16px;
}

.tbkey-mod {
  min-width: 52px;
}

.tbkey.active {
  background: #388bfd;
  color: #fff;
  border-color: #388bfd;
}

/* Make xterm fill its container */
#terminal-container .xterm {
  height: 100%;
}

#terminal-container .xterm-viewport {
  overflow-y: auto !important;
}

/* Markdown styles */
.content h1, .content h2, .content h3 {
  margin: 14px 0 8px;
}

.content p {
  margin: 8px 0;
  line-height: 1.45;
}

.content ul, .content ol {
  padding-left: 20px;
  margin: 8px 0;
}

.content code {
  background: var(--tg-secondary-bg);
  padding: 2px 4px;
  border-radius: 4px;
  font-size: 0.92em;
}

.content pre {
  background: var(--tg-secondary-bg);
  padding: 10px;
  border-radius: 8px;
  overflow-x: auto;
}