/* =====================================================================
   Tiny Summits · App shell (sidebar · main · coach panel · palette)
   Requires tokens.css + base.css + components.css
   ===================================================================== */

.app {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
}
.app[data-panel="open"] { grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--panel-width); }
:root[data-sidebar="collapsed"] .app { grid-template-columns: var(--sidebar-collapsed) minmax(0, 1fr); }
:root[data-sidebar="collapsed"] .app[data-panel="open"] { grid-template-columns: var(--sidebar-collapsed) minmax(0, 1fr) var(--panel-width); }

/* ---------- Sidebar ---------- */
.sidebar {
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; gap: var(--space-4);
  padding: var(--space-5) var(--space-3);
  border-right: var(--border-width) solid var(--line);
  background: var(--surface);
  overflow-y: auto;
}
.brand { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); padding: 0 var(--space-2); }
.brand a { display: flex; align-items: center; gap: var(--space-2); color: var(--ink); text-decoration: none; }
.brand svg { width: 30px; height: 26px; flex: none; }
.brand span { font-family: var(--font-display); font-size: var(--text-lg); line-height: 1; white-space: nowrap; }

.sidebar__quick { justify-content: space-between; }
.sidebar__quick kbd { background: transparent; color: inherit; border-color: color-mix(in srgb, currentColor 35%, transparent); }

.nav { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.nav a {
  position: relative;
  display: flex; align-items: center; gap: var(--space-3);
  min-height: 40px; padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--ink-2); text-decoration: none;
  font-size: var(--text-sm); font-weight: var(--weight-medium);
}
.nav a:hover { background: var(--surface-2); color: var(--ink); }
.nav a[aria-current="page"] {
  background: var(--primary-soft); color: var(--ink); font-weight: var(--weight-semibold);
  box-shadow: inset 3px 0 0 var(--primary);
}
.nav a[aria-current="page"] .icon { color: var(--primary); }
.nav__count {
  margin-left: auto; min-width: 22px; padding: 0 6px;
  border-radius: var(--radius-pill); background: var(--surface-3);
  font-size: var(--text-xs); font-weight: var(--weight-semibold); text-align: center; color: var(--ink);
}
.nav__dot { margin-left: auto; width: 8px; height: 8px; border-radius: 50%; background: var(--pink); }

.sidebar__section { display: flex; flex-direction: column; gap: var(--space-2); padding-top: var(--space-3); border-top: 1px solid var(--line); }
.sidebar__section .eyebrow { padding: 0 var(--space-3); }
.focus-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.focus-list a {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-2) var(--space-3); border-radius: var(--radius-md);
  color: var(--ink); text-decoration: none; font-size: var(--text-sm);
}
.focus-list a:hover { background: var(--surface-2); }
.focus-list a[aria-current="page"] { background: var(--primary-soft); }
.focus-list .ring { --size: 26px; }
.focus-list__name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.sidebar__footer { margin-top: auto; display: flex; flex-direction: column; gap: 2px; padding-top: var(--space-3); border-top: 1px solid var(--line); }
.sidebar__footer .btn { justify-content: flex-start; gap: var(--space-3); padding: var(--space-2) var(--space-3); font-weight: var(--weight-medium); }

/* collapsed sidebar: icons only, labels stay available to screen readers */
:root[data-sidebar="collapsed"] .sidebar { padding-inline: var(--space-2); align-items: center; }
:root[data-sidebar="collapsed"] .sidebar .label-text,
:root[data-sidebar="collapsed"] .sidebar .eyebrow,
:root[data-sidebar="collapsed"] .sidebar kbd,
:root[data-sidebar="collapsed"] .brand span,
:root[data-sidebar="collapsed"] .nav__count {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}
:root[data-sidebar="collapsed"] .brand { flex-direction: column; padding: 0; }
:root[data-sidebar="collapsed"] .nav a,
:root[data-sidebar="collapsed"] .focus-list a,
:root[data-sidebar="collapsed"] .sidebar__footer .btn,
:root[data-sidebar="collapsed"] .sidebar__quick { justify-content: center; padding: var(--space-2); width: 44px; }
:root[data-sidebar="collapsed"] .nav__dot { position: absolute; top: 6px; right: 6px; }
:root[data-sidebar="collapsed"] .sidebar__section, :root[data-sidebar="collapsed"] .sidebar__footer { width: 100%; align-items: center; }

/* ---------- Main ---------- */
.app-main { min-width: 0; padding: var(--space-6) var(--space-8) var(--space-16); }
.app-main:focus { outline: none; }
.page { max-width: var(--content-max); margin: 0 auto; }
.page--wide { max-width: 1120px; }

.topbar {
  display: flex; align-items: center; justify-content: flex-end; gap: var(--space-2);
  max-width: var(--content-max); margin: 0 auto var(--space-5);
}
.page--wide + .topbar, .topbar--wide { max-width: 1120px; }
.topbar__search { justify-content: space-between; min-width: 220px; color: var(--ink-2); font-weight: var(--weight-regular); }
.page-header { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-6); }
.page-header .meta { margin-top: var(--space-1); }

/* ---------- Coach panel ---------- */
.coach-panel {
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column;
  border-left: var(--border-width) solid var(--line-strong);
  background: var(--surface);
}
.coach-panel[hidden] { display: none; }
.coach-panel__header { display: flex; align-items: start; justify-content: space-between; gap: var(--space-3); padding: var(--space-5) var(--space-5) var(--space-3); border-bottom: 1px solid var(--line); }
.coach-panel__header .title { font-size: var(--text-lg); display: flex; align-items: center; gap: var(--space-2); }
.coach-panel__header .title .icon { color: var(--pink); }
.coach-panel__messages { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: var(--space-3); padding: var(--space-5); }
.coach-panel__replies { display: flex; flex-wrap: wrap; gap: var(--space-2); padding: 0 var(--space-5) var(--space-3); }
.coach-panel__form { display: flex; gap: var(--space-2); padding: var(--space-3) var(--space-5) var(--space-5); border-top: 1px solid var(--line); }
.coach-panel__form .input { min-height: 44px; }
.coach-panel__note { padding: 0 var(--space-5) var(--space-3); font-size: var(--text-xs); color: var(--ink-3); }

/* ---------- Command palette ---------- */
dialog.palette {
  width: min(620px, calc(100vw - 32px));
  margin-top: 12vh;
  padding: 0;
  border: var(--border-width) solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface); color: var(--ink);
  box-shadow: 6px 6px 0 var(--lavender), var(--shadow-float);
}
dialog.palette::backdrop { background: rgb(19 17 29 / .45); backdrop-filter: blur(2px); }
.palette__search { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--line); }
.palette__search .icon { color: var(--ink-2); }
.palette__search input { flex: 1; border: 0; background: transparent; font-size: var(--text-md); color: var(--ink); padding: var(--space-1) 0; }
.palette__search input:focus { outline: none; }
.palette__list { list-style: none; margin: 0; padding: var(--space-2); max-height: 52vh; overflow-y: auto; }
.palette__group { padding: var(--space-3) var(--space-3) var(--space-1); font-size: var(--text-xs); font-weight: var(--weight-semibold); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); }
.palette__item { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-2) var(--space-3); border-radius: var(--radius-md); cursor: pointer; font-size: var(--text-sm); }
.palette__item .icon { color: var(--ink-2); }
.palette__item[aria-selected="true"] { background: var(--primary-soft); box-shadow: inset 3px 0 0 var(--primary); }
.palette__item[aria-selected="true"] .icon { color: var(--primary); }
.palette__hint { margin-left: auto; font-size: var(--text-xs); color: var(--ink-2); }
.palette__empty { padding: var(--space-6); text-align: center; color: var(--ink-2); font-size: var(--text-sm); }
.palette__footer { display: flex; gap: var(--space-4); padding: var(--space-2) var(--space-5); border-top: 1px solid var(--line); font-size: var(--text-xs); color: var(--ink-2); }

/* ---------- Shortcut help ---------- */
.shortcut-list { display: grid; grid-template-columns: 1fr auto; gap: var(--space-2) var(--space-6); margin: 0; font-size: var(--text-sm); }
.shortcut-list dt { color: var(--ink); }
.shortcut-list dd { margin: 0; text-align: right; }

/* ---------- Bottom nav (phones; preview of the Android layout) ---------- */
.bottom-nav { display: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1199px) {
  .app, .app[data-panel="open"],
  :root[data-sidebar="collapsed"] .app, :root[data-sidebar="collapsed"] .app[data-panel="open"] {
    grid-template-columns: var(--sidebar-collapsed) minmax(0, 1fr);
  }
  /* force icon-only sidebar */
  .sidebar { padding-inline: var(--space-2); align-items: center; }
  .sidebar .label-text, .sidebar .eyebrow, .sidebar kbd, .brand span, .nav__count {
    position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
  }
  .brand { flex-direction: column; padding: 0; }
  .brand [data-action="toggle-sidebar"] { display: none; }
  .nav a, .focus-list a, .sidebar__footer .btn, .sidebar__quick { justify-content: center; padding: var(--space-2); width: 44px; }
  .nav__dot { position: absolute; top: 6px; right: 6px; }
  .sidebar__section, .sidebar__footer { width: 100%; align-items: center; }
  /* panel overlays content */
  .coach-panel { position: fixed; right: 0; top: 0; bottom: 0; width: min(var(--panel-width), 100vw); z-index: 800; box-shadow: var(--shadow-float); }
}
@media (max-width: 767px) {
  .app, .app[data-panel="open"],
  :root[data-sidebar="collapsed"] .app, :root[data-sidebar="collapsed"] .app[data-panel="open"] { grid-template-columns: minmax(0, 1fr); }
  .sidebar { display: none; }
  .app-main { padding: var(--space-4) var(--space-4) 96px; }
  .topbar__search { min-width: 0; }
  .topbar__search .label-text, .topbar__search kbd { display: none; }
  .coach-panel { width: 100vw; border-left: 0; }
  .bottom-nav {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 700;
    display: grid; grid-template-columns: repeat(5, 1fr);
    padding: var(--space-2) var(--space-2) calc(var(--space-2) + env(safe-area-inset-bottom));
    background: var(--surface); border-top: var(--border-width) solid var(--line-strong);
  }
  .bottom-nav a, .bottom-nav button {
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    min-height: 52px; padding: var(--space-1);
    border: 0; background: none; border-radius: var(--radius-md);
    color: var(--ink-2); text-decoration: none; font-size: 11px; font-weight: var(--weight-medium);
  }
  .bottom-nav [aria-current="page"] { color: var(--primary); font-weight: var(--weight-semibold); }
  .bottom-nav .bottom-nav__add .icon { width: 40px; height: 40px; padding: 8px; border-radius: var(--radius-md); background: var(--primary); color: var(--on-primary); box-shadow: 3px 3px 0 var(--pink); }
}