/* concept-app-design kit: phone shell + interaction recipe styles. Copy kit.css + kit.js next to the mockup
   (they're local files, so CSP 'self' and file:// both work). Theme everything through your own tokens; the
   kit only sets structure, physics hooks and neutral fallbacks. */

/* ---------- Board (all screens side by side in phone frames) ---------- */
html.kit-board, html.kit-board body { margin: 0; background: var(--kit-board-bg, #e8e9ec); }
.kit-board body { font-family: system-ui, sans-serif; }
.kit-board .kit-wall { display: flex; flex-wrap: wrap; gap: 48px 40px; padding: 40px; align-items: flex-start; justify-content: center; }
.kit-frame-wrap { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.kit-frame { position: relative; padding: 11px; border-radius: calc(var(--kit-radius) + 11px); background: #111214;
  box-shadow: 0 0 0 1.5px #3a3c40, 0 30px 60px -30px rgba(0,0,0,.45); }
.kit-frame-label { font: 600 13px/1.3 system-ui, sans-serif; color: #3c3f45; text-align: center; max-width: 393px; }
.kit-board .kit-screen { border-radius: var(--kit-radius); }

/* ---------- The screen (also what a solo render captures) ---------- */
.kit-screen { --kit-w: 393px; --kit-h: 852px; --kit-safe-top: 59px; --kit-safe-bottom: 34px; --kit-radius: 55px;
  position: relative; width: var(--kit-w); height: var(--kit-h); overflow: hidden; overflow: clip; isolation: isolate; /* clip: focus() and scrollIntoView can never scroll the frame */
  background: var(--bg-canvas, #fff); color: var(--text-primary, #111);
  font-family: var(--font-text, "SF Pro Text", -apple-system, BlinkMacSystemFont, system-ui, sans-serif);
  -webkit-font-smoothing: antialiased; -webkit-tap-highlight-color: transparent; text-size-adjust: 100%; }
.kit-screen[data-device="se"] { --kit-w: 375px; --kit-h: 667px; --kit-safe-top: 20px; --kit-safe-bottom: 0px; --kit-radius: 0px; }
.kit-screen[data-device="promax"] { --kit-w: 440px; --kit-h: 956px; --kit-safe-top: 62px; --kit-safe-bottom: 34px; --kit-radius: 62px; }
.kit-screen[data-device="pixel"] { --kit-w: 412px; --kit-h: 915px; --kit-safe-top: 40px; --kit-safe-bottom: 24px; --kit-radius: 44px; }
.kit-screen[data-platform="android"] { font-family: var(--font-text, "Roboto Flex", Roboto, system-ui, sans-serif); }
.kit-screen *, .kit-screen *::before, .kit-screen *::after { box-sizing: border-box; }
:where(.kit-screen) :where(button) { font: inherit; color: inherit; } /* zero specificity: author styles always win */
.kit-screen :is(button, a, [data-press], .kit-row-content, .kit-sheet-grabber) { -webkit-user-select: none; user-select: none; touch-action: manipulation; }

/* Solo mode: one screen fills the viewport, exactly like a device screenshot. */
html.kit-solo, html.kit-solo body { margin: 0; overflow: hidden; background: #000; }
html.kit-solo .kit-screen { --kit-w: 100vw; --kit-h: 100vh; border-radius: 0; }
html.kit-solo .kit-hide { display: none !important; }

/* App mode (a phone, or ?app): one screen at a time on the real viewport. The phone draws its own status bar,
   so the kit's status bar, island and home bar go, and the safe areas come from the device. */
html.kit-app, html.kit-app body { margin: 0; height: 100%; overflow: hidden; background: #000; overscroll-behavior: none; }
html.kit-app .kit-screen { --kit-w: 100vw; --kit-h: 100vh; --kit-h: 100dvh; --kit-radius: 0px;
  --kit-safe-top: max(env(safe-area-inset-top, 0px), 14px); --kit-safe-bottom: max(env(safe-area-inset-bottom, 0px), 10px);
  position: fixed; top: 0; left: 0; border-radius: 0; }
html.kit-app .kit-screen.kit-off { visibility: hidden; pointer-events: none; }
html.kit-app :is(.kit-statusbar, .kit-island, .kit-homebar) { display: none; }
.kit-app-veil { position: absolute; inset: 0; z-index: 200; background: #000; opacity: 0; pointer-events: none; }
.kit-app-tab { position: fixed; z-index: 1000; left: 0; top: 42%; width: 16px; height: 64px; padding: 0; border: 0; border-radius: 0 10px 10px 0;
  background: rgba(20,20,22,.38); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); box-shadow: inset -1px 0 0 rgba(255,255,255,.25); }
.kit-app-tab::after { content: ""; position: absolute; left: 6px; top: 20px; width: 3px; height: 24px; border-radius: 2px; background: rgba(255,255,255,.8); }
.kit-app-list { position: fixed; z-index: 1001; inset: 0; background: rgba(0,0,0,.45); display: flex; align-items: flex-end; }
.kit-app-list[hidden] { display: none; }
.kit-app-list-in { width: 100%; max-height: 82vh; overflow-y: auto; padding: 18px 12px calc(env(safe-area-inset-bottom, 0px) + 16px); border-radius: 18px 18px 0 0; background: #fbfbf9;
  font: 15px/1.3 system-ui, -apple-system, sans-serif; color: #18191b; }
.kit-app-list-in p { margin: 0 8px 10px; font-weight: 700; font-size: 13px; color: #6b6e74; }
.kit-app-list-in button { display: block; width: 100%; text-align: left; padding: 13px 12px; border: 0; border-radius: 10px; background: none; font: inherit; color: inherit; }
.kit-app-list-in button.on { background: #ececE8; font-weight: 600; }
.kit-app-hint { position: fixed; z-index: 1000; left: 26px; top: calc(42% + 14px); max-width: 220px; padding: 9px 12px; border-radius: 10px; background: rgba(20,20,22,.86);
  color: #fff; font: 500 13px/1.3 system-ui, -apple-system, sans-serif; pointer-events: none; transition: opacity .4s; }
.kit-app-hint.kit-off { opacity: 0; }

/* Status bar, island, home indicator: drawn over content, colored by the screen's status style. */
.kit-statusbar { position: absolute; z-index: 90; top: 0; left: 0; right: 0; height: var(--kit-safe-top); pointer-events: none;
  display: flex; align-items: center; justify-content: space-between; padding: 0 30px 0 44px; color: var(--kit-status-ink, #000);
  font: 600 17px/1 "SF Pro Text", -apple-system, system-ui, sans-serif; letter-spacing: -.01em; }
.kit-screen[data-status="light"] { --kit-status-ink: #fff; }
.kit-statusbar .kit-sb-icons { display: flex; gap: 6px; align-items: center; }
.kit-statusbar svg { display: block; fill: currentColor; }
.kit-island { position: absolute; z-index: 91; top: 11px; left: 50%; width: 125px; height: 37px; margin-left: -62.5px; border-radius: 20px; background: #000; pointer-events: none; }
.kit-screen[data-device="se"] .kit-island { display: none; }
.kit-screen[data-device="se"] .kit-statusbar { padding: 0 8px; font-size: 13px; justify-content: space-between; }
.kit-screen[data-platform="android"] .kit-statusbar { padding: 0 24px; font: 500 14px/1 "Roboto Flex", Roboto, system-ui, sans-serif; }
.kit-screen[data-platform="android"] .kit-island { width: 22px; height: 22px; margin-left: -11px; top: 12px; border-radius: 50%; }
.kit-homebar { position: absolute; z-index: 90; bottom: 8px; left: 50%; width: 139px; height: 5px; margin-left: -69.5px; border-radius: 3px;
  background: var(--kit-status-ink, #000); pointer-events: none; }
.kit-screen[data-device="se"] .kit-homebar { display: none; }
.kit-screen[data-platform="android"] .kit-homebar { width: 108px; margin-left: -54px; height: 4px; bottom: 9px; }

/* ---------- Views (push / pop inside one screen) ---------- */
.kit-view { position: absolute; inset: 0; background: var(--bg-canvas, #fff); will-change: transform; }
.kit-view:not(.kit-view-active):not(.kit-view-moving) { visibility: hidden; }
.kit-scroll { position: absolute; inset: 0; overflow-y: auto; overflow-x: hidden; overscroll-behavior: contain; scrollbar-width: none; }
.kit-scroll::-webkit-scrollbar { display: none; }
.kit-view-shade { position: absolute; inset: 0; background: #000; opacity: 0; pointer-events: none; z-index: 5; }

/* ---------- Sheet ---------- */
.kit-sheet-backdrop { position: absolute; inset: 0; z-index: 60; background: var(--kit-backdrop, #000); opacity: 0; pointer-events: none; }
.kit-sheet-backdrop.kit-on { pointer-events: auto; }
.kit-sheet { position: absolute; z-index: 61; left: 0; right: 0; top: 0; transform: translateY(100vh); will-change: transform;
  background: var(--bg-raised, #fff); border-radius: var(--radius-sheet, 28px) var(--radius-sheet, 28px) 0 0; display: flex; flex-direction: column; }
.kit-sheet-grabber { flex: none; height: 22px; display: grid; place-items: center; cursor: grab; touch-action: none; }
.kit-sheet-grabber::after { content: ""; width: 36px; height: 5px; border-radius: 3px; background: var(--line-strong, rgba(127,127,127,.45)); }
.kit-sheet-head { flex: none; touch-action: none; }
/* The sheet is 40px taller than its top detent (so rubber-banding never shows a gap); the body pads for it. */
.kit-sheet-body { flex: 1; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: none; padding-bottom: calc(var(--kit-safe-bottom) + 40px); }

/* ---------- Swipe rows ---------- */
.kit-row { position: relative; overflow: hidden; overflow: clip; touch-action: pan-y; }
.kit-row-content { position: relative; z-index: 1; background: var(--bg-canvas, #fff); will-change: transform; }
.kit-row-actions { position: absolute; inset: 0 0 0 auto; display: flex; z-index: 0; }
.kit-row-action { border: 0; padding: 0 20px; min-width: 76px; font-weight: 600; color: #fff; background: var(--status-bad, #d33);
  display: grid; place-items: center; transition: flex-grow .18s; }
.kit-row-action + .kit-row-action { background: var(--action-secondary, #777); }
.kit-row.kit-commit .kit-row-action:first-child { flex-grow: 1; }

/* ---------- Pull to refresh ---------- */
.kit-ptr { position: absolute; left: 0; right: 0; height: 56px; display: grid; place-items: center; z-index: 0; color: var(--text-secondary, #888); pointer-events: none; }
.kit-ptr svg { width: 26px; height: 26px; }
.kit-ptr.kit-spin svg { animation: kit-spin .8s linear infinite; }
@keyframes kit-spin { to { transform: rotate(360deg); } }

/* ---------- Long-press menu ---------- */
.kit-menu-backdrop { position: absolute; inset: 0; z-index: 70; background: rgba(0,0,0,.18); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); opacity: 0; }
.kit-lift-clone { position: absolute; z-index: 71; margin: 0; pointer-events: none; transform-origin: center; background: var(--bg-raised, #fff);
  border-radius: var(--radius-lift, 14px); box-shadow: 0 10px 30px rgba(0,0,0,.18); overflow: hidden; }
.kit-menu { position: absolute; z-index: 72; min-width: 230px; border-radius: var(--radius-menu, 14px); overflow: hidden;
  background: var(--bg-menu, rgba(250,250,250,.96)); color: var(--text-primary, #111); box-shadow: 0 12px 40px rgba(0,0,0,.22); transform-origin: top left; }
.kit-menu button { display: flex; width: 100%; justify-content: space-between; align-items: center; gap: 16px; border: 0; background: none;
  padding: 12px 16px; font-size: 17px; text-align: left; }
.kit-menu button + button { border-top: .5px solid var(--line, rgba(0,0,0,.12)); }
.kit-menu button.kit-danger { color: var(--status-bad, #d33); }

/* ---------- Segmented control ---------- */
.kit-seg { position: relative; display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; padding: 2px; border-radius: var(--radius-control, 9px);
  background: var(--bg-sunken, rgba(118,118,128,.12)); }
.kit-seg button { position: relative; z-index: 1; border: 0; background: none; padding: 7px 10px; font-size: 13px; font-weight: 500; }
.kit-seg button[aria-selected="true"] { font-weight: 600; }
.kit-seg-thumb { position: absolute; z-index: 0; top: 2px; bottom: 2px; left: 0; border-radius: calc(var(--radius-control, 9px) - 2px);
  background: var(--bg-raised, #fff); box-shadow: 0 3px 8px rgba(0,0,0,.12), 0 0 0 .5px rgba(0,0,0,.04); }

/* ---------- Number roll ---------- */
/* --kit-roll-lh: raise to 1.2-1.3 for display faces whose glyphs overshoot the em box. */
.kit-roll { display: inline-flex; align-items: flex-start; font-variant-numeric: tabular-nums; line-height: var(--kit-roll-lh, 1.15); height: calc(var(--kit-roll-lh, 1.15) * 1em); overflow: hidden; vertical-align: bottom; }
.kit-roll-col { display: flex; flex-direction: column; will-change: transform; }
.kit-roll-col > span, .kit-roll-ch { display: block; flex: none; height: calc(var(--kit-roll-lh, 1.15) * 1em); line-height: var(--kit-roll-lh, 1.15); }
.kit-screen .kit-roll { line-height: var(--kit-roll-lh, 1.15); } /* an author font shorthand on the host must not shift the digits */

/* ---------- Toast ---------- */
.kit-toast { position: absolute; z-index: 80; left: 16px; right: 16px; bottom: calc(var(--kit-safe-bottom) + 12px); display: flex; align-items: center;
  gap: 12px; justify-content: space-between; padding: 14px 16px; border-radius: var(--radius-toast, 14px);
  background: var(--bg-inverse, #1d1d1f); color: var(--text-inverse, #fff); font-size: 15px; }
.kit-toast button { border: 0; background: none; color: var(--action-on-inverse, #8ab4ff); font-weight: 600; font-size: 15px; min-height: 44px; margin: -10px -4px; padding: 0 4px 0 12px; }

/* ---------- Haptic debug badge (only with ?haptics=1, for filmstrips and reviews) ---------- */
.kit-haptic-badge { position: absolute; z-index: 99; left: 50%; bottom: calc(var(--kit-safe-bottom) + 70px); transform: translateX(-50%);
  padding: 5px 10px; border-radius: 99px; background: #ff2d55; color: #fff; font: 700 12px/1 system-ui, sans-serif; letter-spacing: .02em;
  pointer-events: none; opacity: 0; transition: opacity .5s; }
.kit-haptic-badge.kit-on { opacity: 1; transition: none; }

@media (prefers-reduced-motion: reduce) { .kit-ptr.kit-spin svg { animation-duration: 2.4s; } }