/*
 * Terminal panel (public/js/terminal.js). Colors, type and spacing come only from the tokens defined in app.css, so the
 * panel follows light and dark themes without its own palette.
 */

/* The panel is sized by its own --terminal-h (drag or keyboard resize). The shell gives the slot a fixed share of the
   window, which would clip a taller panel, so the slot grows to whatever the panel needs. */
.app-terminal-slot:empty {
  display: none;
}

.app-terminal-slot:has(> .terminal-panel) {
  height: auto;
}

.terminal-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  height: var(--terminal-h, 320px);
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--bg-sunken);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
}

/* Scoped to real controls: xterm's hidden helper textarea lives inside the screen and must not get a ring. */
.terminal-panel button:focus-visible,
.terminal-ime:focus-visible,
.terminal-resizer:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

/* ---- Resize handle ------------------------------------------------------ */
.terminal-resizer {
  position: relative;
  flex: none;
  height: 8px;
  cursor: row-resize;
  touch-action: none;
}

.terminal-resizer::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 3px;
  margin: -1.5px 0 0 -20px;
  border-radius: var(--radius-sm);
  background: var(--border-strong);
}

.terminal-resizer:hover::before,
.terminal-resizer:focus-visible::before {
  background: var(--fg-muted);
}

/* ---- Header ------------------------------------------------------------- */
.terminal-header {
  display: flex;
  flex: none;
  align-items: center;
  gap: var(--space-2);
  min-height: 40px;
  padding: 0 var(--space-3);
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
}

.terminal-header > .btn {
  flex: none;
}

.terminal-title {
  display: inline-flex;
  flex: none;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  white-space: nowrap;
}

.terminal-title > .icon {
  width: 14px;
  height: 14px;
  color: var(--fg-muted);
}

.terminal-target {
  flex: 1 1 0;
  min-width: 0;
  overflow: hidden;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.terminal-status {
  flex: 0 1 auto;
  min-width: 0;
  overflow: hidden;
  color: var(--fg-muted);
  font-size: var(--fs-xs);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.terminal-status[data-tone='ok'] {
  color: var(--success);
}

.terminal-status[data-tone='error'] {
  color: var(--danger);
}

/* Icon-only buttons on narrow screens; the label stays available to assistive technology. */
.terminal-btn-label {
  white-space: nowrap;
}

@media (max-width: 479.98px) {
  .terminal-btn-label {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    border: 0;
  }
}

/* ---- Locked-session banner ---------------------------------------------- */
.terminal-banner {
  display: flex;
  flex: none;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--border);
  background: var(--warning-soft);
  color: var(--fg);
  font-size: var(--fs-xs);
}

.terminal-banner > .icon {
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 2px;
  color: var(--fg-muted);
}

.terminal-banner-body {
  min-width: 0;
}

.terminal-banner-text,
.terminal-banner-note {
  margin: 0;
}

.terminal-banner-note {
  margin-top: var(--space-1);
  color: var(--fg-muted);
}

/* ---- Screen (xterm mounts here) ----------------------------------------- */
/* No padding on purpose: the fit addon measures this element and padding would make it overflow. */
.terminal-screen {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--bg-sunken);
}

/* ---- Touch keys (coarse pointers only) ---------------------------------- */
.terminal-keys {
  display: none;
  flex: none;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-2) calc(var(--space-2) + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
}

.terminal-key-row {
  display: flex;
  gap: var(--space-1);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.terminal-key-row::-webkit-scrollbar {
  display: none;
}

.terminal-key {
  flex: 0 0 auto;
  min-width: 44px;
  min-height: 44px;
  padding: 0 var(--space-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1;
  white-space: nowrap;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.terminal-key:active {
  background: var(--accent-soft);
}

/* iOS Safari zooms in on a focused field under 16px, so the field never goes below 16px; Large still grows it. */
.terminal-ime {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: 0 var(--space-3);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: max(16px, calc(16px * var(--fs-scale)));
}

.terminal-ime::placeholder {
  color: var(--fg-muted);
}

@media (pointer: coarse) {
  .terminal-keys {
    display: flex;
  }

  .terminal-resizer {
    height: 20px;
  }

  .terminal-header .btn {
    --btn-h: 44px;
    min-width: var(--btn-h);
  }
}

/* ---- Narrow screens: full-screen overlay -------------------------------- */
@media (max-width: 767.98px) {
  .app-terminal-slot:has(> .terminal-panel) {
    border-top: 0;
    background: none;
  }

  .terminal-panel {
    position: fixed;
    top: var(--terminal-vtop, 0px);
    right: 0;
    left: 0;
    z-index: 41;
    height: 100vh;
    height: var(--terminal-vh, 100dvh);
    padding-top: env(safe-area-inset-top);
    padding-right: env(safe-area-inset-right);
    padding-left: env(safe-area-inset-left);
    overscroll-behavior: contain;
  }

  .terminal-resizer {
    display: none;
  }
}