/* Shared window chrome for the terminal, Agent, settings and gear picker.
 * Layout, terminal rendering and execution behavior live in their own modules. */
:root {
  --window-radius: var(--radius);
  --control-radius: var(--radius-sm);
  --window-header-height: 56px;
  --window-header-padding: 6px 10px;
  --window-header-padding-top: 6px;
  --window-shadow: 0 2px 8px rgba(2, 6, 16, .2);
  --overlay-shadow: 0 12px 32px rgba(2, 6, 16, .35), 0 2px 8px rgba(2, 6, 16, .2);
  --primary-fill: var(--accent);
}

[data-theme="light"] {
  --window-shadow: 0 2px 8px rgba(15, 35, 70, .05);
  --overlay-shadow: 0 12px 32px rgba(15, 35, 70, .12), 0 2px 8px rgba(15, 35, 70, .06);
  --primary-fill: var(--accent-strong);
}

.window-surface {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--window-radius);
  box-shadow: var(--window-shadow);
}

.window-header {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: var(--window-header-height);
  margin: 0;
  padding: var(--window-header-padding);
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  line-height: 20px;
  letter-spacing: 0;
  text-transform: none;
}

.window-header :is(.term-title, #agentTitle, strong) {
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
}

.btn, .icon-btn, .term-tool, .agent-gear, .terminal-key, .settings-tab,
.ts-btn, .agent-terminal-peek, input, select, .agent-question textarea {
  border-radius: var(--control-radius);
}

.window-header :is(.btn, .icon-btn, .term-tool) {
  min-width: 44px;
  height: 44px;
  min-height: 44px;
  justify-content: center;
  background: var(--panel-3);
  font-size: 13px;
}

.window-header .icon-btn { width: 44px; padding: 0; }
.drawer-head-actions { gap: 8px; }
.btn:active:not(:disabled), .icon-btn:active { transform: none; }
.btn:focus-visible, .icon-btn:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.btn-primary { background: var(--primary-fill); border-color: transparent; box-shadow: none; }
.btn-primary:hover:not(:disabled) { background: color-mix(in srgb, var(--primary-fill) 92%, var(--text)); border-color: transparent; box-shadow: none; }
.window-header :is(.btn, .icon-btn, .term-tool):hover:not(:disabled) { background: var(--btn-hover); }
.agent-gear { background: var(--panel-3); border-color: var(--line); }
.agent-gear-track b { box-shadow: 0 0 0 2px var(--panel-3); }
.agent-question textarea { background: var(--input-bg); }
.agent-form { background: var(--panel-2); }

.card {
  flex: 0 0 auto;
  background: var(--panel-2);
  border-radius: var(--window-radius);
  box-shadow: none;
}
.card-title { font-size: 13px; font-weight: 600; letter-spacing: 0; text-transform: none; color: var(--text); }
.agent-message, .diagnostic-item { border-radius: var(--control-radius); }
.topbar, .statusbar { background: var(--panel); border-radius: var(--window-radius); box-shadow: var(--window-shadow); }
.toast { background: var(--panel); border-color: var(--line-strong); border-radius: var(--window-radius); box-shadow: var(--overlay-shadow); backdrop-filter: none; }

html.agent-mode .terminal-head, .agent-tight .agent-header { min-height: var(--window-header-height); padding: var(--window-header-padding); }
html.agent-mode .terminal-card { box-shadow: var(--window-shadow); }
.agent-mode-picker.window-surface { padding: 0; border-color: var(--line); box-shadow: var(--overlay-shadow); }
/* Keep the title out of the scrolling options area. A sticky header inside the
 * scroll container hides the row that scrolling just brought into view, which
 * makes the lower modes untappable whenever the picker is short (soft keyboard
 * open). scroll-padding-top cannot fix that for native scrollIntoView. */
.agent-mode-title.window-header { flex: 0 0 auto; min-height: 44px; }
.agent-mode-options { padding: 12px; }
.agent-mode-options::before { top: 50px; bottom: 50px; left: 40px; }
.agent-mode-option { border-radius: var(--control-radius); }

/* Docked settings and the touch/narrow-window sheet share the same chrome. */
.controls.window-surface { padding: 0; gap: 12px; }
.controls.window-surface > :not(.drawer-head) { margin-inline: 12px; }
.controls.window-surface > :last-child { margin-bottom: 12px; }
.controls .drawer-head.window-header { position: sticky; top: 0; z-index: 5; }
.controls .settings-tabs { position: sticky; top: var(--window-header-height); z-index: 3; }
/* Sticky chrome sits over scrolled cards in the docked settings panel too, so it
 * needs the opaque variant there as well (the glass token is translucent). */
.controls .drawer-head.window-header,
.controls .settings-tabs,
.controls.has-agent-settings .settings-tabs { background: var(--sticky-surface, var(--panel-2)); }
html.settings-drawer-layout .controls.window-surface {
  padding: 0;
  border-radius: var(--window-radius);
  box-shadow: var(--overlay-shadow);
  scroll-padding-top: calc(var(--window-header-height) + 64px);
}
html.settings-drawer-layout .drawer-head.window-header { top: 0; background: var(--sticky-surface, var(--panel-2)); padding: var(--window-header-padding); }
/* Sticky chrome sits over scrolled cards: a translucent glass background lets
 * their text show through, which reads as overlapping UI. */
html.settings-drawer-layout .controls .settings-tabs { top: var(--window-header-height); border-radius: var(--control-radius); background: var(--sticky-surface, var(--panel-2)); }
.controls.has-agent-settings .settings-tabs { border-radius: var(--control-radius); }

@media (max-width: 600px) {
  /* The drawer is full width on phones, so the status-bar band is part of its
   * scrollport. Move the safe-area inset from the scroll container's padding
   * into the sticky header: the padding would scroll away and let card text
   * slide under the status bar, while the header can cover that band. */
  html.settings-drawer-layout .controls.window-surface {
    padding-top: 0;
    padding-bottom: var(--safe-bottom);
    border: 0;
    border-radius: 0;
  }
  html.settings-drawer-layout .controls.window-surface .drawer-head.window-header {
    min-height: calc(var(--window-header-height) + var(--safe-top));
    padding-top: calc(var(--window-header-padding-top) + var(--safe-top));
  }
  html.settings-drawer-layout .controls.window-surface .settings-tabs {
    top: calc(var(--window-header-height) + var(--safe-top));
  }
  .controls .card { border-radius: var(--window-radius); }
}

@media (max-width: 380px) {
  :root { --window-header-padding: 6px 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .window-surface, .window-header, .window-header button { transition: none; }
}