/* Digital Scrapbook — the paper, and everything that goes on it.
 *
 * EVERY SURFACE IN THIS FILE IS DRAWN, NOT LOADED. Twelve papers, six washi tapes, four photo
 * mounts, five pen nibs and the cover on the START screen are all gradients and repeating
 * gradients. There is no image asset anywhere in this feature except the photobooth's own sticker
 * SVGs and the couple's own strips — which is the same rule the rest of this product's art follows
 * (tools/gen-*.mjs), and here it also happens to be the cheapest thing to ship: a scrapbook is
 * ALL surface, so one texture per sheet would have been the heaviest download in the app.
 *
 * The leaf is three stacked layers and the order is the whole trick: paper, then the placed DOM,
 * then one ink canvas on top which only takes pointers while a pen is out.
 */

/* `.scene` in base.css is a column flex with `align-items: center`, which makes every child
   shrink-to-fit. That is right for a game's stack of centred cards and wrong for a page you lay
   things on: a shrink-to-fit parent gives the leaf an indefinite width, its own `min(100%, …)`
   resolves to zero, and an aspect-ratio box of zero width has zero height. Stretch, like the
   `.scene--left` modifier the rest of the app uses for the same reason. */
.sb-shelf, .sb-book {
  width: min(var(--col-wide), calc(100vw - 32px));
  margin: 0 auto;
  align-items: stretch;
  text-align: left;
}

/* ============================================================================================
   PAPER — the twelve sheets.
   `--sb-ink` is set per leaf from the sheet's own ink colour (shared/scrapbook.js PAPERS), so
   handwriting on midnight blue is cream and handwriting on kraft is brown, without a single
   element having to know which sheet it landed on.
   ============================================================================================ */
.sb-paper {
  --sb-base: #FAF5EA;
  --sb-ink: #3E3A36;
  background-color: var(--sb-base);
  background-image: none;
}

[data-paper="cream"] { --sb-base: #FAF5EA; --sb-ink: #3E3A36;
  background-image: radial-gradient(circle at 30% 20%, rgba(255,255,255,.55), transparent 60%);
}
[data-paper="grid"] { --sb-base: #FBF8F1; --sb-ink: #3E3A36;
  background-image:
    repeating-linear-gradient(0deg, rgba(120,130,150,.16) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(120,130,150,.16) 0 1px, transparent 1px 24px);
}
[data-paper="dotted"] { --sb-base: #FBF8F1; --sb-ink: #3E3A36;
  background-image: radial-gradient(rgba(120,130,150,.32) 1.2px, transparent 1.3px);
  background-size: 22px 22px;
}
[data-paper="lined"] { --sb-base: #FCFBF6; --sb-ink: #2F3A4A;
  background-image:
    repeating-linear-gradient(0deg, transparent 0 27px, rgba(90,120,170,.28) 27px 28px),
    linear-gradient(90deg, transparent 0 46px, rgba(220,110,120,.45) 46px 47px, transparent 47px);
}
[data-paper="kraft"] { --sb-base: #D9BF97; --sb-ink: #4A3B2A;
  background-image:
    repeating-linear-gradient(102deg, rgba(120,90,55,.07) 0 2px, transparent 2px 5px),
    repeating-linear-gradient(14deg, rgba(255,245,225,.10) 0 3px, transparent 3px 7px);
}
[data-paper="blush"] { --sb-base: #FBE9EC; --sb-ink: #7A3E52;
  background-image: radial-gradient(circle at 75% 15%, rgba(255,255,255,.7), transparent 55%);
}
[data-paper="sky"] { --sb-base: #E6EFFA; --sb-ink: #2F4A6A;
  background-image: radial-gradient(circle at 20% 85%, rgba(255,255,255,.75), transparent 60%);
}
[data-paper="linen"] { --sb-base: #F4EFE4; --sb-ink: #3E3A36;
  background-image:
    repeating-linear-gradient(0deg, rgba(150,135,110,.13) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(90deg, rgba(150,135,110,.13) 0 1px, transparent 1px 4px);
}
[data-paper="marble"] { --sb-base: #F2F2F0; --sb-ink: #33363E;
  background-image:
    linear-gradient(118deg, transparent 42%, rgba(120,125,140,.22) 43%, transparent 45%),
    linear-gradient(72deg, transparent 60%, rgba(120,125,140,.16) 61%, transparent 64%),
    radial-gradient(circle at 65% 35%, rgba(255,255,255,.9), transparent 55%);
}
[data-paper="night"] { --sb-base: #232A3C; --sb-ink: #F2E8DC;
  background-image:
    radial-gradient(circle at 18% 22%, rgba(255,255,255,.16) 1px, transparent 1.6px),
    radial-gradient(circle at 62% 44%, rgba(255,255,255,.12) 1px, transparent 1.6px),
    radial-gradient(circle at 84% 76%, rgba(255,255,255,.14) 1px, transparent 1.6px),
    linear-gradient(160deg, #2B3348 0%, #232A3C 100%);
}
[data-paper="garden"] { --sb-base: #EAF0E2; --sb-ink: #31452F;
  background-image:
    radial-gradient(circle at 25% 30%, rgba(120,160,110,.28) 3px, transparent 4px),
    radial-gradient(circle at 70% 65%, rgba(150,180,120,.24) 4px, transparent 5px);
  background-size: 64px 64px, 88px 88px;
}
[data-paper="terra"] { --sb-base: #E8C7B2; --sb-ink: #5A2E22;
  background-image:
    repeating-linear-gradient(45deg, rgba(150,80,50,.08) 0 6px, transparent 6px 14px),
    radial-gradient(circle at 40% 20%, rgba(255,240,225,.5), transparent 60%);
}

/* ============================================================================================
   THE LEAF
   ============================================================================================ */
/* A plain block, deliberately. A centring grid would make the leaf shrink-to-fit, and then its
   own `width: min(100%, …)` resolves against an indefinite width — which is zero, and an
   aspect-ratio box of zero width has zero height. The leaf disappears and every DOM assertion
   still passes. It happened; tests/e2e/scrapbook.spec.js now measures the box for that reason. */
.sb-stage { padding: 8px 0 12px; }
.sb-leaf {
  position: relative;
  display: block;
  /* Sized by width, capped three ways so the whole leaf is on screen without scrolling: the
     column, a comfortable maximum, and 56vh of height (which is 42vh of width at 3:4), so the
     leaf, the page bar and the tray are all on screen at once without scrolling. */
  width: min(100%, 460px, 42vh);
  margin: 0 auto;
  aspect-ratio: 3 / 4;
  border-radius: var(--r8);
  box-shadow: var(--shadow-2), inset 0 0 0 1px rgba(0, 0, 0, .05);
  overflow: hidden;
  touch-action: manipulation;
  --sb-base: #FAF5EA;
  --sb-ink: #3E3A36;
  background-color: var(--sb-base);
}
.sb-leaf::after {           /* the bound edge, so a leaf reads as part of a book */
  content: ''; position: absolute; inset: 0 auto 0 0; width: 10px; pointer-events: none;
  background: linear-gradient(90deg, rgba(0, 0, 0, .14), transparent);
}
.sb-leaf.is-inking { cursor: crosshair; }

.sb-placed { position: absolute; inset: 0; }
.sb-placed.is-pass { pointer-events: none; }

/* The ink canvas: on top, and transparent to pointers unless a pen is out. */
.sb-ink { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; touch-action: none; }
.sb-leaf.is-inking .sb-ink { pointer-events: auto; }

/* ============================================================================================
   ELEMENTS
   ============================================================================================ */
.sb-el { position: absolute; cursor: grab; user-select: none; }
.sb-el:active { cursor: grabbing; }
.sb-el.is-selected { outline: 2px dashed var(--pink); outline-offset: 6px; border-radius: 4px; }

/* Things land on a page, they do not blink into existence. */
@keyframes sb-drop { from { opacity: 0; transform: translate(-50%, -60%) scale(1.04); } }
.sb-drop { animation: sb-drop .34s cubic-bezier(.2, .9, .3, 1) both; animation-delay: var(--sb-drop, 0ms); }
@media (prefers-reduced-motion: reduce) { .sb-drop { animation: none; } }

/* ---- photo mounts: the four ways a strip sits on the page --------------------------------- */
.sb-mount { position: relative; width: 100%; background: #fff; overflow: hidden; }
.sb-mount img { width: 100%; height: 100%; object-fit: cover; display: block; }
.sb-mount[data-mount="plain"] { box-shadow: 0 2px 10px rgba(0, 0, 0, .18); }
.sb-mount[data-mount="polaroid"] {
  padding: 6% 6% 16%; background: #FFFDF8;
  box-shadow: 0 3px 14px rgba(0, 0, 0, .22); border-radius: 2px;
}
.sb-mount[data-mount="print"] { border-radius: 10px; box-shadow: 0 3px 12px rgba(0, 0, 0, .2); }
.sb-mount[data-mount="corners"] { background: transparent; box-shadow: none; }
/* Real photo corners: four little triangles of paper holding it down. */
.sb-mount[data-mount="corners"]::before,
.sb-mount[data-mount="corners"]::after {
  content: ''; position: absolute; width: 16%; aspect-ratio: 1; background: rgba(60, 48, 36, .55);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}
.sb-mount[data-mount="corners"]::before { top: 0; left: 0; }
.sb-mount[data-mount="corners"]::after { bottom: 0; right: 0; transform: rotate(180deg); }

.sb-el--photo.is-gone .sb-photo-img { display: none; }
.sb-photo-gone {
  display: none; position: absolute; inset: 0; place-items: center; text-align: center;
  padding: 8%; font: 500 11px/1.35 var(--font); color: var(--ink-soft);
  background: repeating-linear-gradient(45deg, #F3EFE7 0 8px, #EDE8DE 8px 16px);
}
.sb-el--photo.is-gone .sb-photo-gone { display: grid; }
.sb-photo-caption {
  display: block; margin-top: 4px; text-align: center;
  font: 600 12px/1.3 var(--font); color: var(--sb-ink);
}

/* ---- washi tape: six patterns, all painted --------------------------------------------- */
.sb-el--tape.is-under { z-index: 0; }
.sb-tape-strip {
  display: block; width: 100%; border-radius: 1px; opacity: .88;
  background-color: var(--tape-a);
  /* A torn, slightly translucent edge is what makes it read as tape rather than a coloured bar. */
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 3px, #000 calc(100% - 3px), transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 3px, #000 calc(100% - 3px), transparent 100%);
  box-shadow: 0 1px 3px rgba(0, 0, 0, .12);
}
[data-tape="stripe"] { background-image: repeating-linear-gradient(115deg, var(--tape-b) 0 6px, transparent 6px 13px); }
[data-tape="check"] {
  background-image:
    repeating-linear-gradient(0deg, var(--tape-b) 0 5px, transparent 5px 10px),
    repeating-linear-gradient(90deg, var(--tape-b) 0 5px, transparent 5px 10px);
  background-blend-mode: multiply;
}
[data-tape="dots"] { background-image: radial-gradient(var(--tape-b) 2px, transparent 2.4px); background-size: 11px 11px; }
[data-tape="floral"] {
  background-image:
    radial-gradient(circle at 4px 4px, var(--tape-b) 2.4px, transparent 3px),
    radial-gradient(circle at 14px 11px, var(--tape-b) 1.6px, transparent 2.2px);
  background-size: 20px 16px;
}
[data-tape="kraft"] { background-image: repeating-linear-gradient(96deg, var(--tape-b) 0 1px, transparent 1px 4px); }

/* ---- stickers, writing, places ------------------------------------------------------------ */
.sb-sticker-img { width: 100%; display: block; filter: drop-shadow(0 2px 4px rgba(0, 0, 0, .18)); }
.sb-text-body { display: block; text-align: center; white-space: pre-wrap; line-height: 1.25; }
.sb-place {
  display: inline-flex; align-items: baseline; gap: .35em; white-space: nowrap;
  padding: .35em .7em; border-radius: 999px;
  background: rgba(255, 255, 255, .72); color: var(--sb-ink);
  border: 1px solid rgba(0, 0, 0, .08); box-shadow: 0 1px 4px rgba(0, 0, 0, .1);
  font-family: var(--mono); letter-spacing: .02em;
}
.sb-place-note { opacity: .7; font-style: italic; }

/* ============================================================================================
   THE BOOK CHROME
   ============================================================================================ */
.sb-book-head { display: flex; align-items: center; gap: 12px; padding: 4px 0 8px; }
.sb-title { flex: 1; text-align: center; font-family: var(--serif); font-size: 18px; }
/* The in-book status is a tiny chip, so it takes the mono label treatment. The shelf's line is a
   whole sentence a person reads once — uppercase mono would shout it, and this is the warm end of
   the product (docs/BRAND.md §5). Sentence case, same colour, same honesty. */
.sb-save-note { font: 600 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
.sb-shelf-save { font: 400 13px/1.4 var(--font); color: var(--ink-soft); }
.sb-save-note.is-warn, .sb-shelf-save.is-warn { color: var(--accent-copper, #B4633A); }

.sb-pagebar { display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }
.sb-spine { display: flex; gap: 4px; }
.sb-spine-tick {
  width: 10px; height: 22px; padding: 0; border: 1px solid var(--line); border-radius: 2px;
  background: var(--paper-raised); cursor: pointer;
}
.sb-spine-tick.has-marks { background: var(--pink-tint); }
.sb-spine-tick[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); }
.sb-page-label { font-size: 12px; color: var(--ink-soft); }
.sb-cap-note { font-size: 12px; color: var(--ink-soft); }

.sb-undo-row { display: flex; align-items: center; gap: 10px; justify-content: center; padding: 6px 0 2px; }

/* ============================================================================================
   THE TRAY
   ============================================================================================ */
.sb-tray { margin-top: 10px; border: 1px solid var(--line); border-radius: var(--r16); background: var(--paper-raised); }
.sb-tabs { display: flex; overflow-x: auto; gap: 2px; padding: 6px; }
.sb-tab {
  flex: 1 0 auto; display: grid; justify-items: center; gap: 2px; padding: 8px 10px;
  min-height: var(--tap); border: 0; border-radius: var(--r8); background: transparent; cursor: pointer;
  font: 600 11px/1 var(--font); color: var(--ink-soft);
}
.sb-tab[aria-pressed="true"] { background: var(--pink-tint); color: var(--ink); }
.sb-tab-emoji { font-size: 18px; }

.sb-drawer { padding: 10px 12px 14px; border-top: 1px solid var(--line); }
.sb-drawer-grid { display: grid; gap: 8px; }
.sb-drawer-hint, .sb-drawer-empty { font: 400 12px/1.4 var(--font); color: var(--ink-soft); margin: 8px 0 0; }

.sb-strip-grid { grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); }
.sb-strip-card { padding: 0; border: 1px solid var(--line); border-radius: var(--r4); background: #fff; cursor: pointer; overflow: hidden; position: relative; }
.sb-strip-card img { width: 100%; display: block; }
/* Two shelves in one drawer: the ones kept at home, then the ones on this device. The heading is
   the whole distinction, so it is quiet and always the same height rather than a coloured badge. */
.sb-shelf-head { font: 600 11px/1 var(--font); letter-spacing: .04em; text-transform: uppercase; color: var(--ink-soft); margin: 10px 0 6px; }
.sb-drawer > .sb-shelf-head:first-child { margin-top: 2px; }
/* A kept strip is the one both of you can see, so it is the one that is not drawn as a loose
   snapshot: a squarer corner and a hairline, like something already mounted. */
.sb-strip-grid--hub .sb-strip-card { border-radius: var(--r8); box-shadow: 0 1px 0 rgba(0, 0, 0, .06); }

.sb-tape-grid, .sb-paper-grid { grid-template-columns: repeat(auto-fill, minmax(88px, 1fr)); }
.sb-tape-card, .sb-paper-card {
  display: grid; gap: 5px; padding: 7px; border: 1px solid var(--line); border-radius: var(--r8);
  background: var(--paper); cursor: pointer; position: relative;
}
.sb-tape-card.is-locked, .sb-paper-card.is-locked { opacity: .45; cursor: not-allowed; }
.sb-card-label { font: 600 11px/1 var(--font); color: var(--ink-soft); }
.sb-card-lock { position: absolute; top: 4px; right: 6px; font-size: 11px; }
.sb-tape-swatch { display: block; height: 18px; border-radius: 2px; background-color: var(--tape-a); }
.sb-paper-swatch { display: block; height: 34px; border-radius: var(--r4); border: 1px solid rgba(0, 0, 0, .07); background-color: var(--sb-base); }

.sb-sticker-grid { grid-template-columns: repeat(auto-fill, minmax(44px, 1fr)); max-height: 190px; overflow-y: auto; }
.sb-sticker-card { padding: 4px; border: 1px solid transparent; border-radius: var(--r8); background: transparent; cursor: pointer; }
.sb-sticker-card:hover { border-color: var(--line); background: var(--paper); }
.sb-sticker-card img { width: 100%; display: block; }

.sb-write-input, .sb-place-a, .sb-place-b, .sb-place-note-in { width: 100%; margin-bottom: 8px; }
.sb-chiprow { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.sb-chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 11px; min-height: 36px;
  border: 1px solid var(--line); border-radius: 999px; background: var(--paper); cursor: pointer;
  font: 600 12px/1 var(--font); color: var(--ink);
}
.sb-chip[aria-pressed="true"] { background: var(--ink); color: var(--on-ink); border-color: var(--ink); }

/* Five nibs, drawn: the pen you pick looks like what it will do. */
.sb-pen-nib { display: block; width: 20px; background: currentColor; border-radius: 999px; }
.sb-pen-nib[data-pen="fine"] { height: 1px; }
.sb-pen-nib[data-pen="ball"] { height: 2px; }
.sb-pen-nib[data-pen="marker"] { height: 4px; }
.sb-pen-nib[data-pen="brush"] { height: 6px; border-radius: 999px 999px 40% 40%; }
.sb-pen-nib[data-pen="highlight"] { height: 9px; border-radius: 1px; opacity: .35; }

.sb-ink-dot { width: 28px; height: 28px; padding: 0; border: 2px solid transparent; border-radius: 50%; cursor: pointer; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .12); }
.sb-ink-dot[aria-pressed="true"] { border-color: var(--ink); }
.sb-nib { display: grid; place-items: center; width: 34px; height: 34px; padding: 0; border: 1px solid var(--line); border-radius: var(--r8); background: var(--paper); cursor: pointer; }
.sb-nib[aria-pressed="true"] { border-color: var(--ink); }
.sb-nib span { background: var(--ink); border-radius: 50%; display: block; }

.sb-selection { display: grid; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--line); background: var(--pink-tint); }
.sb-sel-what { font: 700 11px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); }
.sb-sel-tools { display: flex; gap: 6px; }
.sb-round { width: 38px; height: 38px; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: var(--paper-raised); cursor: pointer; font-size: 15px; }
.sb-round:disabled { opacity: .4; cursor: not-allowed; }
.sb-del { border-color: var(--red); color: var(--red); }

/* ============================================================================================
   THE SHELF
   ============================================================================================ */
.sb-shelf-head { text-align: center; display: grid; gap: 6px; padding: 8px 0 16px; }
.sb-shelf-title { font-family: var(--serif); font-size: clamp(24px, 5vw, 34px); margin: 0; }
.sb-shelf-sub { color: var(--ink-soft); margin: 0; }
.sb-shelf-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 14px; }
.sb-shelf-note { text-align: center; color: var(--ink-soft); margin: 14px 0 4px; }
.sb-shelf-save { text-align: center; display: block; margin: 4px 0 20px; }

.sb-book-card {
  display: grid; gap: 6px; padding: 10px; border: 1px solid var(--line); border-radius: var(--r16);
  background: var(--paper-raised); cursor: pointer; text-align: left;
}
.sb-book-card.is-picked { border-color: var(--pink); box-shadow: 0 0 0 3px var(--pink-tint); }
.sb-book-card.is-skeleton { min-height: 190px; background: var(--paper); opacity: .5; }
.sb-book-cover {
  position: relative; display: block; aspect-ratio: 3 / 4; border-radius: var(--r8); overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .06), 2px 0 6px rgba(0, 0, 0, .1) inset;
  background-color: var(--sb-base, #FAF5EA);
}
.sb-book-photo { position: absolute; inset: 16% 22%; width: 56%; height: 68%; object-fit: cover; box-shadow: 0 2px 8px rgba(0, 0, 0, .25); }
.sb-book-tape { position: absolute; top: 10%; left: 30%; width: 40%; height: 12px; background: rgba(247, 199, 211, .85); transform: rotate(-6deg); }
.sb-book-name { font-family: var(--serif); font-size: 15px; }
.sb-book-meta { font: 400 11px/1 var(--mono); color: var(--ink-soft); }
.sb-book-new { place-items: center; align-content: center; min-height: 190px; border-style: dashed; }
.sb-book-new-mark { font-size: 30px; color: var(--ink-soft); }
.sb-book-new-label { font: 600 12px/1.3 var(--font); color: var(--ink-soft); text-align: center; }
.sb-book-new.is-locked { opacity: .7; }

/* ============================================================================================
   THE COVER on START — what this is, before a word of copy.
   ============================================================================================ */
.sb-cover {
  position: relative; width: min(100%, 260px); aspect-ratio: 3 / 4; margin: 0 auto;
  border-radius: var(--r8); background: #FAF5EA;
  background-image: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, .6), transparent 60%);
  box-shadow: var(--shadow-2);
}
.sb-cover-tape { position: absolute; top: 8%; left: 26%; width: 48%; height: 16px; background: rgba(247, 199, 211, .9); transform: rotate(-5deg); }
.sb-cover-strip, .sb-cover-strip--two {
  position: absolute; width: 26%; aspect-ratio: 1 / 3; background: #fff; padding: 4px;
  box-shadow: 0 3px 12px rgba(0, 0, 0, .2);
  background-image: repeating-linear-gradient(180deg, var(--pink-tint) 0 22%, #fff 22% 25%);
}
.sb-cover-strip { top: 20%; left: 16%; transform: rotate(-7deg); }
.sb-cover-strip--two { top: 32%; right: 14%; left: auto; transform: rotate(6deg); background-image: repeating-linear-gradient(180deg, var(--blue-tint) 0 22%, #fff 22% 25%); }
.sb-cover-hand {
  position: absolute; bottom: 10%; left: 0; right: 0; text-align: center;
  font: 600 26px/1 'Snell Roundhand', 'Segoe Script', 'Bradley Hand', cursive, var(--serif);
  color: #3E3A36;
}

@media (max-width: 640px) {
  .sb-leaf { width: min(100%, 380px, 46vh); }
  .sb-tab-label { display: none; }
}