/* shell.css — app frame: boot splash, lock gate, Phase→Section sidebar,
 * the centered #main scroller, settings FAB, drawer/modal/toast roots.
 * (Timeline/day-card content styles live in roadmap.css.) */

/* ---- App grid ------------------------------------------------------ */
#app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  /* minmax(0,1fr) caps the single row at the viewport so #sidebar is bounded
     and its inner list can scroll; without it the row grows to content. */
  grid-template-rows: minmax(0, 1fr);
  height: 100vh;
  height: 100dvh;
  transition: grid-template-columns var(--dur) var(--ease);
}
#app[data-sidebar="collapsed"] { grid-template-columns: var(--sidebar-w-collapsed) 1fr; }
#app[hidden] { display: none; }

/* smooth reveal once auth clears; reduce-motion zeroes the duration via theme.css */
@keyframes appIn { from { opacity: 0; transform: scale(.995); } to { opacity: 1; transform: none; } }
#app.app-in { animation: appIn var(--dur) var(--ease-out); }

/* ---- Sidebar (Phase→Section tree) ---------------------------------- */
#sidebar {
  grid-column: 1;
  position: relative;
  /* layered depth: a forge glow bleeding from the logo corner over a vertical
     surface→base wash, with a hairline inner highlight down the right edge. */
  background:
    radial-gradient(130% 38% at 0% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 58%),
    linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--surface) 80%, var(--bg)));
  border-right: 1px solid var(--border);
  box-shadow: inset -1px 0 0 color-mix(in srgb, #fff 6%, transparent);
  display: flex; flex-direction: column;
  min-width: 0; min-height: 0;      /* let .sb-list bound itself and scroll */
  overflow: hidden; z-index: 30;
}
.sb-head {
  display: flex; align-items: center; gap: var(--s2);
  padding: var(--s4); height: 60px; flex: none;
  border-bottom: 1px solid var(--border);
}
.sb-logo {
  width: 32px; height: 32px; border-radius: 11px 11px 11px 4px; flex: none;   /* forged plate */
  display: grid; place-items: center; font-size: 16px; position: relative; overflow: hidden;
  background: var(--forge); color: #fff;
  box-shadow: var(--shadow-sm), 0 4px 14px -4px color-mix(in srgb, var(--accent) 55%, transparent);
}
/* a light sheen sweeps across the plate when the header is hovered */
.sb-logo::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 32%, color-mix(in srgb, #fff 55%, transparent) 48%, transparent 62%);
  transform: translateX(-120%); transition: transform .6s var(--ease-out);
}
.sb-head:hover .sb-logo::after { transform: translateX(120%); }
.sb-title { font-weight: 700; letter-spacing: -.01em; white-space: nowrap; }
.sb-title small { display: block; font-weight: 500; font-size: var(--t-xs); color: var(--text-3); }
.sb-collapse {
  margin-left: auto; width: 30px; height: 30px; border-radius: 8px; flex: none;
  color: var(--text-2); display: grid; place-items: center;
  transition: background var(--dur-fast), color var(--dur-fast);
}
.sb-collapse:hover { background: var(--surface-3); color: var(--text); }
.sb-collapse svg { transition: transform var(--dur) var(--ease); }
#app[data-sidebar="collapsed"] .sb-collapse svg { transform: rotate(180deg); }

.sb-list { flex: 1; min-height: 0; overflow-y: auto; padding: var(--s3) var(--s2);
  display: flex; flex-direction: column; gap: 2px; }
.sb-list > * { flex-shrink: 0; }
.sb-section-label { font-size: var(--t-xs); text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-3); padding: var(--s3) var(--s3) var(--s2); font-weight: 600; }

/* nav rows — phases, sections, companions, and reserved global entries */
.sb-item {
  display: flex; align-items: center; gap: var(--s3);
  padding: var(--s2) var(--s3); border-radius: var(--r2);
  color: var(--text-2); position: relative; width: 100%; text-align: left; min-width: 0;
  transition: background var(--dur-fast), color var(--dur-fast), transform var(--dur-fast);
}
.sb-item:hover { background: var(--surface-3); color: var(--text); transform: translateX(2px); }
.sb-item[aria-current="true"] { background: var(--forge-soft); color: var(--text); }
.sb-item[aria-current="true"] .sb-item-title { font-weight: 700; }
.sb-item[aria-current="true"]::before {
  content: ""; position: absolute; left: -2px; top: 14%; bottom: 14%;
  width: 3px; border-radius: 0 4px 4px 0; background: var(--forge);
  box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 70%, transparent);
  animation: indIn .32s var(--ease-spring) both;
}
@keyframes indIn { from { opacity: 0; transform: scaleY(.3); } to { opacity: 1; transform: none; } }
.sb-ico { font-size: 18px; width: 22px; text-align: center; flex: none; }
.sb-item-body { flex: 1; min-width: 0; }
.sb-item-title { font-weight: 600; font-size: var(--t-sm); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis; }
.sb-mini { display: flex; align-items: center; gap: var(--s2); margin-top: 5px; }
.sb-mini .bar { flex: 1; height: 4px; border-radius: 3px; background: var(--track); overflow: hidden; }
.sb-mini .bar > i { display: block; height: 100%; border-radius: 3px; background: var(--forge);
  background-size: 220% 100%; width: 0; transition: width var(--dur-slow) var(--ease); }
.sb-mini .pct { font-size: var(--t-xs); color: var(--text-3); font-variant-numeric: tabular-nums; }
.track-dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--text-3); }
.track-dot.ahead { background: var(--ok); } .track-dot.on { background: var(--info); }
.track-dot.behind { background: var(--warn); }

/* collapsible phase groups */
.sb-phase-head { font-weight: 700; color: var(--text); }
.sb-phase-head .chev { margin-left: auto; color: var(--text-3); display: grid; place-items: center;
  transition: transform var(--dur) var(--ease); }
.sb-phase[data-open="false"] .sb-phase-head .chev { transform: rotate(-90deg); }
/* the phase tree is a metro line: a gradient "spine" runs down each open phase,
   and every section / companion under it is a station node clipped onto it. */
.sb-phase-body { position: relative; margin: 1px 0 var(--s2) 22px; padding-left: 16px;
  display: flex; flex-direction: column; gap: 1px; }
.sb-phase-body::before {
  content: ""; position: absolute; left: 3px; top: 6px; bottom: 8px; width: 2px;
  border-radius: 2px; background: var(--spine); opacity: .55;
}
.sb-phase[data-open="true"] .sb-phase-body::before { opacity: .85; }
.sb-phase[data-open="false"] .sb-phase-body { display: none; }
.sb-sec .sb-item-title { font-weight: 500; }

/* station node on the spine — hollow by default, a glowing filled node when current */
.sb-phase-body .sb-item::before {
  content: ""; position: absolute; left: -13px; top: 50%; bottom: auto; transform: translateY(-50%);
  width: 7px; height: 7px; border-radius: 50%; background: var(--surface);
  border: 2px solid color-mix(in srgb, var(--accent) 42%, var(--border-2));
  box-shadow: none; animation: none; transition: border-color var(--dur-fast), background var(--dur-fast), box-shadow var(--dur-fast);
}
.sb-phase-body .sb-item:hover::before { border-color: var(--accent); }
.sb-phase-body .sb-item[aria-current="true"]::before {
  width: 9px; height: 9px; background: var(--accent); border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent),
              0 0 10px color-mix(in srgb, var(--accent) 60%, transparent);
}

/* companion entries (💡 Ideas / 🗂️ Account Structures) — references, no bar */
.sb-item.companion { color: var(--text-3); }
.sb-item.companion .sb-item-title { font-weight: 500; }
.comp-sep { height: 1px; margin: var(--s2) var(--s2) var(--s1); background: var(--border); opacity: .7; }

/* divider between the reserved global entries and the phase tree */
.sb-sep { height: 1px; margin: var(--s3) var(--s3) var(--s2);
  background: linear-gradient(90deg, transparent, var(--border-2) 20%, var(--border-2) 80%, transparent); }

/* sections nested under an expanded phase */
.sb-sub { display: flex; flex-direction: column; gap: 1px; padding: 2px 0 var(--s2) 34px;
  max-height: 46vh; overflow-y: auto; overflow-x: hidden; overscroll-behavior: contain;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.sb-sub::-webkit-scrollbar { width: 7px; }
.sb-sub::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px;
  border: 2px solid transparent; background-clip: padding-box; }
.sb-sub a { font-size: var(--t-sm); color: var(--text-3); padding: 4px var(--s2); border-radius: 6px;
  transition: color var(--dur-fast), background var(--dur-fast), transform var(--dur-fast); }
.sb-sub a:hover { color: var(--text); background: var(--surface-3); transform: translateX(2px); }

/* collapsed rail: hide text, center icons */
#app[data-sidebar="collapsed"] .sb-title,
#app[data-sidebar="collapsed"] .sb-item-body,
#app[data-sidebar="collapsed"] .sb-section-label,
#app[data-sidebar="collapsed"] .sb-sub,
#app[data-sidebar="collapsed"] .sb-phase-body,
#app[data-sidebar="collapsed"] .sb-phase-head .chev,
#app[data-sidebar="collapsed"] .comp-sep,
#app[data-sidebar="collapsed"] .sb-sep { display: none; }
#app[data-sidebar="collapsed"] .sb-item { justify-content: center; padding: var(--s3) 0; }
#app[data-sidebar="collapsed"] .sb-head { flex-direction: column; justify-content: center;
  height: auto; padding: var(--s3) 0; gap: var(--s2); }
#app[data-sidebar="collapsed"] .sb-collapse { margin: 0; }

.sb-foot { flex: none; padding: var(--s3); border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: var(--s2); font-size: var(--t-xs); color: var(--text-3); }
.sync-pill { display: inline-flex; align-items: center; gap: 6px; min-width: 0; }
.sync-pill span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sync-pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--text-3); flex: none; }
.sync-pill.online i { background: var(--ok); box-shadow: 0 0 6px color-mix(in srgb, var(--ok) 70%, transparent); }
.sync-pill.saving i { background: var(--warn); animation: syncPulse 1s ease-in-out infinite; }
.sync-pill.offline i { background: var(--text-3); } .sync-pill.error i { background: var(--bad); }
@keyframes syncPulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }
#app[data-sidebar="collapsed"] #sync-pill-text { display: none; }

/* ---- Main scroll region (the single scroller) ---------------------- */
#main {
  grid-column: 2; position: relative; overflow-y: auto; overflow-x: hidden;
  scroll-behavior: smooth;
  scrollbar-width: thin; scrollbar-color: color-mix(in srgb, var(--accent) 40%, var(--border-2)) transparent;
}
#main::-webkit-scrollbar { width: 10px; }
#main::-webkit-scrollbar-track { background: transparent; }
#main::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--accent) 40%, var(--border-2)); border-radius: 8px;
  border: 2px solid transparent; background-clip: padding-box; }
#main::-webkit-scrollbar-thumb:hover { background: var(--accent); }
#view { max-width: var(--maxread); margin: 0 auto; padding: var(--s6) var(--s5) var(--s8); }
@media (max-width: 720px) { #view { padding: var(--s4) var(--s4) var(--s8); } }

/* provisional per-route placeholder (replaced by real views in later phases) */
.view-placeholder { max-width: 640px; margin: 12vh auto 0; text-align: center; color: var(--text-2); }
.view-placeholder .vp-ico { font-size: 44px; }
.view-placeholder h1 { font-size: var(--t-2xl); color: var(--text); letter-spacing: -.02em; margin-top: var(--s3); }
.view-placeholder p { margin-top: var(--s2); }
.view-placeholder .vp-tag { display: inline-block; margin-top: var(--s4); padding: 4px 10px;
  border-radius: var(--r-pill); background: var(--surface-3); color: var(--text-3);
  font-size: var(--t-xs); font-family: var(--font-mono); }

/* ---- Mobile: sidebar becomes an off-canvas slide-over -------------- */
.sb-scrim { position: fixed; inset: 0; background: var(--scrim); z-index: 25; opacity: 0;
  pointer-events: none; transition: opacity var(--dur); }
#topbar { display: none; }

@media (max-width: 860px) {
  #app { grid-template-columns: 1fr; }
  #sidebar {
    position: fixed; inset: 0 auto 0 0; width: min(84vw, 320px);
    transform: translateX(-102%); transition: transform var(--dur) var(--ease);
    box-shadow: var(--shadow-lg);
  }
  #app[data-mobile="open"] #sidebar { transform: none; }
  #app[data-mobile="open"] .sb-scrim { opacity: 1; pointer-events: auto; }
  #main { grid-column: 1; }
  #topbar {
    display: flex; align-items: center; gap: var(--s3); height: 54px; padding: 0 var(--s4);
    position: sticky; top: 0; z-index: 20;
    /* near-opaque instead of a blur: a sticky backdrop-filter re-blurs its backdrop every
       scroll frame — the worst offender on mobile, where this bar lives. Frosted look kept. */
    background: color-mix(in srgb, var(--bg) 97%, transparent);
    border-bottom: 1px solid var(--border);
  }
  .menu-btn { width: 34px; height: 34px; border-radius: 9px; color: var(--text-2);
    display: grid; place-items: center; }
  .menu-btn:hover { background: var(--surface-3); color: var(--text); }
  .tb-title { font-weight: 700; }
}
@media (min-width: 861px) { .menu-btn { display: none; } }

/* ---- Lock gate ----------------------------------------------------- */
#lock { position: fixed; inset: 0; z-index: 40; display: grid; place-items: center;
  padding: var(--s5); background: var(--bg); }
.lock-card { width: min(380px, 100%); background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r4); box-shadow: var(--shadow-lg); padding: var(--s7) var(--s6);
  text-align: center; }
.lock-badge { width: 56px; height: 56px; border-radius: var(--r3); margin: 0 auto var(--s4);
  display: grid; place-items: center; font-size: 26px; background: var(--forge); color: #fff; }
.lock-card h1 { font-size: var(--t-xl); letter-spacing: -.02em; }
.lock-card > p { color: var(--text-2); font-size: var(--t-sm); margin-top: var(--s1); }
.lock-form { margin-top: var(--s5); display: flex; flex-direction: column; gap: var(--s3); }
.lock-input { position: relative; }
.lock-input input { width: 100%; padding: var(--s3) var(--s6) var(--s3) var(--s3);
  background: var(--surface-2); border: 1px solid var(--border-2); border-radius: var(--r2); }
.peek { position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  width: 32px; height: 32px; border-radius: 8px; color: var(--text-3);
  display: grid; place-items: center; }
.peek:hover { color: var(--text); background: var(--surface-3); }
.lock-err { color: var(--bad); font-size: var(--t-sm); min-height: 1em; text-align: left; }
.btn { padding: var(--s3) var(--s4); border-radius: var(--r2); font-weight: 600;
  transition: transform var(--dur-fast), box-shadow var(--dur-fast), opacity var(--dur-fast); }
.btn.primary { background: var(--forge); color: #fff; box-shadow: 0 4px 14px -4px color-mix(in srgb, var(--accent) 60%, transparent); }
.btn.primary:hover { transform: translateY(-1px); box-shadow: 0 7px 20px -5px color-mix(in srgb, var(--accent) 65%, transparent); }
.btn.primary:active { transform: translateY(0); }
.btn.block { width: 100%; }

/* ---- Settings FAB -------------------------------------------------- */
#fab { position: fixed; right: var(--s5); bottom: var(--s5); z-index: 35;
  width: 48px; height: 48px; border-radius: 50% 50% 50% 14px; display: grid; place-items: center;
  background: var(--forge); color: #fff; border: none;
  box-shadow: var(--shadow-lg), 0 6px 20px -6px color-mix(in srgb, var(--accent) 55%, transparent);
  transition: transform var(--dur) var(--ease-spring), box-shadow var(--dur-fast); }
#fab:hover { transform: rotate(45deg) scale(1.06); box-shadow: var(--shadow-lg), 0 10px 26px -6px color-mix(in srgb, var(--accent) 65%, transparent); }
#fab::after {
  content: ""; position: absolute; inset: -3px; border-radius: inherit; pointer-events: none;
  border: 2px solid color-mix(in srgb, var(--accent) 50%, transparent);
  opacity: 0; transform: scale(.82); transition: opacity var(--dur), transform var(--dur) var(--ease-out);
}
#fab:hover::after { opacity: 1; transform: scale(1); }
@media (max-width: 720px) { #fab { right: var(--s4); bottom: var(--s4); } }

/* ---- Dev validation banner (Phase 3 boot validator) ---------------- */
#dev-error { position: fixed; top: 0; inset-inline: 0; z-index: 70; margin: 0;
  padding: var(--s3) var(--s4); background: var(--bad); color: #fff;
  font-family: var(--font-mono); font-size: var(--t-sm); white-space: pre-wrap;
  max-height: 40vh; overflow: auto; }
#dev-error:empty { display: none; }

/* ==== Modal + toast system (ui.js) ================================== */
/* Button variants beyond .primary (defined above). */
.btn.ghost { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
.btn.ghost:hover { background: var(--surface-3); border-color: var(--border-2); }
.btn.danger { background: var(--bad); color: #fff; box-shadow: 0 4px 14px -4px color-mix(in srgb, var(--bad) 55%, transparent); }
.btn.danger:hover { transform: translateY(-1px); box-shadow: 0 7px 20px -5px color-mix(in srgb, var(--bad) 60%, transparent); }
.btn.danger:active { transform: translateY(0); }

html.modal-open { overflow: hidden; }

.modal-overlay {
  position: fixed; inset: 0; z-index: 85; display: grid; place-items: center;
  padding: var(--s4); overflow-y: auto;
  background: color-mix(in srgb, var(--scrim) 88%, transparent);
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
  opacity: 0; transition: opacity var(--dur) var(--ease-out);
}
.modal-overlay.shown { opacity: 1; }

.modal {
  width: 100%; max-width: 34rem; margin: auto;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border-2); border-radius: var(--r-tl) var(--r4) var(--r4) var(--r4);
  box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; max-height: calc(100dvh - var(--s6));
  transform: translateY(10px) scale(.985); opacity: 0;
  transition: transform var(--dur) var(--ease-spring), opacity var(--dur) var(--ease-out);
}
.modal-overlay.shown .modal { transform: none; opacity: 1; }
.modal:focus { outline: none; }
.modal.size-sm { max-width: 26rem; }
.modal.size-lg { max-width: 46rem; }

.modal-head { display: flex; align-items: flex-start; gap: var(--s3);
  padding: var(--s4) var(--s5) var(--s2); }
.modal-title { flex: 1; font-size: var(--t-lg); font-weight: 700; line-height: 1.25;
  letter-spacing: -.01em; text-wrap: balance; }
.modal-x { flex: none; margin: -2px -6px 0 0; width: 32px; height: 32px; border-radius: var(--r2);
  display: grid; place-items: center; color: var(--text-2);
  transition: background var(--dur-fast), color var(--dur-fast); }
.modal-x:hover { background: var(--surface-3); color: var(--text); }

.modal-body { padding: var(--s2) var(--s5) var(--s4); overflow-y: auto; line-height: 1.55; }
.modal-body:first-child { padding-top: var(--s5); }
.modal-msg { color: var(--text-2); font-size: var(--t-md); }
.modal-foot { display: flex; justify-content: flex-end; gap: var(--s3);
  padding: var(--s3) var(--s5) var(--s5); flex-wrap: wrap; }
.modal-foot .btn { min-width: 6rem; }

.info-rich { font-size: var(--t-md); color: var(--text); }
.info-rich :is(p, ul, ol) { margin: 0 0 var(--s3); }
.info-rich :is(ul, ol) { padding-left: var(--s5); }
.info-rich code { background: var(--surface-3); padding: 1px 5px; border-radius: var(--r1);
  font-size: .92em; }
.info-rich a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

.prompt-field { display: flex; flex-direction: column; gap: var(--s2); }
.prompt-label { font-size: var(--t-sm); font-weight: 600; color: var(--text-2); }
.prompt-input { width: 100%; padding: var(--s3); border-radius: var(--r2);
  border: 1px solid var(--border-2); background: var(--surface-2); color: var(--text);
  font: inherit; transition: border-color var(--dur-fast), box-shadow var(--dur-fast); }
.prompt-input:focus { outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }
textarea.prompt-input { resize: vertical; min-height: 4.5rem; line-height: 1.5; }
.prompt-err { color: var(--bad); font-size: var(--t-sm); min-height: 1em; }

/* ---- Toasts -------------------------------------------------------- */
#toast-root { position: fixed; right: var(--s5); bottom: var(--s5); z-index: 95;
  display: flex; flex-direction: column; gap: var(--s2); align-items: flex-end;
  pointer-events: none; max-width: min(24rem, calc(100vw - var(--s6))); }
.toast { pointer-events: auto; display: flex; align-items: center; gap: var(--s3);
  padding: var(--s3) var(--s3) var(--s3) var(--s4);
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border-2); border-left: 3px solid var(--info);
  border-radius: var(--r3); box-shadow: var(--shadow-lg);
  opacity: 0; transform: translateY(10px); }
.toast.in { animation: toastIn .34s var(--ease-spring) forwards; }
.toast.leaving { animation: toastOut .3s var(--ease-out) forwards; }
.toast.success { border-left-color: var(--ok); }
.toast.error   { border-left-color: var(--bad); }
.toast.warn    { border-left-color: var(--warn); }
.toast-ico { flex: none; display: grid; place-items: center; color: var(--info); }
.toast.success .toast-ico { color: var(--ok); }
.toast.error .toast-ico   { color: var(--bad); }
.toast.warn .toast-ico    { color: var(--warn); }
.toast-msg { flex: 1; font-size: var(--t-sm); line-height: 1.4; }
.toast-act { flex: none; font-size: var(--t-sm); font-weight: 700; color: var(--accent);
  padding: var(--s1) var(--s2); border-radius: var(--r1); }
.toast-act:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.toast-x { flex: none; width: 26px; height: 26px; border-radius: var(--r1);
  display: grid; place-items: center; color: var(--text-2); }
.toast-x:hover { background: var(--surface-3); color: var(--text); }

@keyframes toastIn  { to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(6px) scale(.97); } }

@media (max-width: 720px) {
  #toast-root { left: var(--s4); right: var(--s4); bottom: var(--s4); max-width: none; align-items: stretch; }
  .modal-overlay { padding: var(--s3); align-items: flex-end; }
  .modal { max-width: none; border-radius: var(--r4) var(--r4) 0 0; }
}

/* ---- Drawer (settings slide-over) --------------------------------- */
.drawer-overlay {
  position: fixed; inset: 0; z-index: 86; display: flex; justify-content: flex-end;
  background: color-mix(in srgb, var(--scrim) 82%, transparent);
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
  opacity: 0; transition: opacity var(--dur) var(--ease-out);
}
.drawer-overlay.shown { opacity: 1; }
.drawer {
  width: min(24rem, 100vw); max-width: 100vw; height: 100%;
  background: var(--surface); color: var(--text);
  border-left: 1px solid var(--border-2); box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; overflow: hidden;
  transition: transform var(--dur) var(--ease-out);
}
.drawer.right { transform: translateX(100%); }
.drawer.left  { border-left: none; border-right: 1px solid var(--border-2); transform: translateX(-100%); }
.drawer-overlay.shown .drawer { transform: none; }
.drawer:focus { outline: none; }
.drawer-head { flex: none; display: flex; align-items: center; gap: var(--s3);
  padding: var(--s4) var(--s5); border-bottom: 1px solid var(--border); }
.drawer-title { flex: 1; font-size: var(--t-lg); font-weight: 700; letter-spacing: -.01em; }
.drawer-body { flex: 1; overflow-y: auto; padding: var(--s4) var(--s5) var(--s6);
  display: flex; flex-direction: column; gap: var(--s5); }

/* ---- Settings controls -------------------------------------------- */
.set-section { display: flex; flex-direction: column; gap: var(--s3); }
.set-h { font-size: var(--t-xs); font-weight: 700; text-transform: uppercase;
  letter-spacing: .09em; color: var(--text-2); }
.set-field { display: flex; align-items: center; justify-content: space-between; gap: var(--s3);
  min-height: 2rem; }
.set-label { font-size: var(--t-sm); font-weight: 600; }

.seg { display: inline-flex; padding: 3px; gap: 2px; background: var(--surface-2);
  border: 1px solid var(--border); border-radius: var(--r2); }
.seg-btn { padding: var(--s1) var(--s3); border-radius: 6px; font-size: var(--t-sm);
  font-weight: 600; color: var(--text-2); transition: color var(--dur-fast), background var(--dur-fast); }
.seg-btn:hover { color: var(--text); }
.seg-btn.active { color: #fff; background: var(--forge);
  box-shadow: 0 2px 8px -3px color-mix(in srgb, var(--accent) 60%, transparent); }

.switch { position: relative; width: 42px; height: 24px; border-radius: var(--r-pill);
  background: var(--surface-3); border: 1px solid var(--border-2); flex: none;
  transition: background var(--dur-fast), border-color var(--dur-fast); }
.switch-knob { position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--surface); box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease-spring); }
.switch.on { background: var(--forge); border-color: transparent; }
.switch.on .switch-knob { transform: translateX(18px); background: #fff; }

.swatches { display: inline-flex; gap: var(--s2); flex-wrap: wrap; }
.swatch { width: 22px; height: 22px; border-radius: 50% 50% 50% 6px; background: var(--sw);
  border: 2px solid transparent; box-shadow: var(--shadow-sm);
  transition: transform var(--dur-fast), box-shadow var(--dur-fast); }
.swatch:hover { transform: translateY(-1px) scale(1.06); }
.swatch.active { border-color: var(--surface); box-shadow: 0 0 0 2px var(--sw); }

.set-syncline { display: flex; align-items: center; gap: var(--s2); font-size: var(--t-sm); }
.set-syncdot { width: 9px; height: 9px; border-radius: 50%; background: var(--text-2); flex: none; }
.set-syncline[data-state="online"] .set-syncdot { background: var(--ok); }
.set-syncline[data-state="saving"] .set-syncdot { background: var(--warn); }
.set-syncline[data-state="offline"] .set-syncdot,
.set-syncline[data-state="error"]  .set-syncdot { background: var(--bad); }
.set-btn { align-self: flex-start; display: inline-flex; align-items: center; gap: var(--s2); }
.set-actions { display: flex; flex-wrap: wrap; gap: var(--s2); }
.set-actions .set-btn { align-self: auto; }
.set-hint { font-size: var(--t-sm); color: var(--text-2); line-height: 1.5; }
.set-about { font-size: var(--t-sm); color: var(--text); line-height: 1.6; }
.set-dim { color: var(--text-2); }

@media (max-width: 720px) { .drawer { width: 100vw; } }

@media (prefers-reduced-motion: reduce) {
  .modal-overlay, .modal, .drawer-overlay, .drawer { transition: none; }
  .toast.in, .toast.leaving { animation: none; opacity: 1; transform: none; }
}
:root[data-motion="off"] .drawer-overlay,
:root[data-motion="off"] .drawer { transition: none !important; }
:root[data-motion="off"] .modal-overlay,
:root[data-motion="off"] .modal { transition: none !important; }
:root[data-motion="off"] .toast.in,
:root[data-motion="off"] .toast.leaving { animation: none !important; opacity: 1; transform: none; }