/* ── Reset & base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #1a1a2e;
  --bg-secondary: #16213e;
  --text: #e4e4e7;
  --text-muted: #a1a1aa;
  --accent: #d97706;
  --accent-hover: #f59e0b;
  --border: #27273a;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --danger: #ef4444;
  --success: #22c55e;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --header-height: 52px;
  --quickkeys-height: 44px;
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

/* ── Login screen ────────────────────────────────────────── */
#login-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg);
}

.login-content {
  text-align: center;
  width: 100%;
  max-width: 340px;
}

.logo { margin-bottom: 20px; }
.logo svg { filter: drop-shadow(0 4px 20px rgba(217, 119, 6, 0.3)); }

.login-content h1 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

#login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#login-form input {
  width: 100%;
  padding: 14px 16px;
  font-size: 16px; /* 16px prevents iOS zoom on focus */
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-secondary);
  color: var(--text);
  outline: none;
  text-align: center;
  letter-spacing: 2px;
}

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

.btn-primary {
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: white;
  cursor: pointer;
  -webkit-appearance: none;
}

.btn-primary:active {
  opacity: 0.9;
  transform: scale(0.98);
}

.btn-secondary {
  width: 100%;
  padding: 14px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  -webkit-appearance: none;
}

.btn-secondary:active {
  background: var(--surface-hover);
}

.btn-icon {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-appearance: none;
  flex-shrink: 0;
}

.btn-icon:active {
  background: var(--surface-hover);
  color: var(--text);
}

.error {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
}

/* ── Project picker screen ───────────────────────────────── */
#project-screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  padding-top: var(--safe-top);
}

.screen-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  height: var(--header-height);
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.screen-header h2 {
  font-size: 18px;
  font-weight: 600;
}

#project-list {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 8px;
}

.project-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s;
}

.project-item:active {
  background: var(--surface-hover);
}

.project-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
  font-size: 18px;
}

.project-info {
  flex: 1;
  min-width: 0;
}

.project-name {
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-path {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-arrow {
  color: var(--text-muted);
  flex-shrink: 0;
}

.screen-footer {
  padding: 12px 16px;
  padding-bottom: calc(12px + var(--safe-bottom));
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── Terminal screen ─────────────────────────────────────── */
#terminal-screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: #1e1e2e;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  padding-top: calc(6px + var(--safe-top));
  height: calc(var(--header-height) + var(--safe-top));
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#terminal-title {
  flex: 1;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: center;
}

.terminal-actions {
  display: flex;
  gap: 2px;
}

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

/* ── Quick keys bar ──────────────────────────────────────── */
#quick-keys {
  display: flex;
  gap: 4px;
  padding: 6px 8px;
  padding-bottom: calc(6px + var(--safe-bottom));
  height: calc(var(--quickkeys-height) + var(--safe-bottom));
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  overflow-x: auto;
  flex-shrink: 0;
  -webkit-overflow-scrolling: touch;
}

#quick-keys::-webkit-scrollbar { display: none; }

#quick-keys button {
  height: 32px;
  min-width: 48px;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 600;
  font-family: "SF Mono", "Menlo", monospace;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  -webkit-appearance: none;
}

#quick-keys button:active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* ── xterm overrides ─────────────────────────────────────── */
.xterm { padding: 4px; }
.xterm-viewport { border-radius: 0 !important; }
.xterm-viewport::-webkit-scrollbar { width: 4px; }
.xterm-viewport::-webkit-scrollbar-track { background: transparent; }
.xterm-viewport::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 2px; }

/* ── Mobile input bar ───────────────────────────────────── */
#mobile-input-bar {
  padding: 6px 8px;
  padding-bottom: calc(6px + var(--safe-bottom));
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

#mobile-input-form {
  display: flex;
  gap: 8px;
  align-items: center;
}

#mobile-input {
  flex: 1;
  padding: 10px 14px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  color: var(--text);
  outline: none;
  -webkit-appearance: none;
}

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

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

#btn-send {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  -webkit-appearance: none;
}

#btn-send:active {
  opacity: 0.9;
  transform: scale(0.95);
}

/* ── Utilities ───────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Hidden text input for mobile keyboard ───────────────── */
#keyboard-input {
  position: fixed;
  top: -100px;
  left: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  font-size: 16px; /* prevents zoom */
}