/* beads.css — 拼豆小游戏：豆板、色板、工具条、图样与成图面板。
   只消费 tokens.css 的 token；本文件内定义的两个派生变量只做装饰描边。 */

.chapter--bead {
  max-width: 64rem;
}

.bead-studio,
.bead-modal {
  --bead-gold: #e2c7a0;
  --bead-line: var(--hairline-soft, rgba(46, 59, 78, .07));
}

.bead-studio {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(0.85rem, 2.4vw, 1.5rem);
  margin-top: clamp(1.5rem, 4vh, 2.2rem);
  text-align: left;
  min-width: 0;
}

/* ── 豆板 ── */

.bead-board-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  min-width: 0;
  border-radius: var(--radius-lg, 28px);
  background-image:
    radial-gradient(120% 118% at 22% 6%, rgba(255, 255, 255, .92), rgba(255, 255, 255, 0) 62%),
    radial-gradient(96% 96% at 96% 98%, var(--glass, rgba(255, 255, 255, .55)), rgba(255, 255, 255, 0) 72%);
  background-color: var(--paper-deep, #f4ecdd);
  box-shadow:
    var(--shadow-soft, 0 18px 40px -24px rgba(46, 59, 78, .45)),
    inset 0 0 0 1px var(--hairline, rgba(46, 59, 78, .13)),
    inset 0 1px 0 rgba(255, 255, 255, .95),
    inset 0 -14px 26px -22px rgba(46, 59, 78, .35);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  isolation: isolate;
}

.bead-board {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  touch-action: none;
  cursor: crosshair;
  -webkit-tap-highlight-color: transparent;
  outline: none;
}

.bead-board:focus-visible {
  outline: 2px solid var(--sage, #a8c9a0);
  outline-offset: 2px;
  border-radius: var(--radius-lg, 28px);
}

/* 确认条 */

.bead-confirm {
  position: absolute;
  left: .55rem;
  right: .55rem;
  bottom: .55rem;
  z-index: 4;
  display: grid;
  gap: .55rem;
  padding: .7rem .85rem .8rem;
  border-radius: 18px;
  border: 1px solid var(--bead-line);
  background-color: rgba(251, 248, 241, .95);
  box-shadow: 0 20px 40px -26px rgba(46, 59, 78, .6);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.bead-confirm__text {
  margin: 0;
  font-size: .84rem;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--ink, #2e3b4e);
}

.bead-confirm__acts {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  justify-content: flex-end;
}

.bead-toast {
  position: absolute;
  left: 50%;
  bottom: 1rem;
  z-index: 5;
  max-width: calc(100% - 2rem);
  padding: .5rem .95rem;
  border-radius: var(--radius-pill, 999px);
  background-color: rgba(251, 248, 241, .94);
  border: 1px solid var(--bead-line);
  box-shadow: 0 14px 28px -22px rgba(46, 59, 78, .6);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--ink, #2e3b4e);
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, 12px);
  transition:
    opacity var(--dur-1, 220ms) var(--ease-out, ease-out),
    transform var(--dur-1, 220ms) var(--ease-out, ease-out);
}

.bead-toast.is-on {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ── 侧栏 ── */

.bead-side {
  display: grid;
  gap: .55rem;
  min-width: 0;
  align-content: start;
}

.bead-panel {
  padding: .6rem .7rem .5rem;
  border-radius: 20px;
  border: 1px solid var(--bead-line);
  background-image: linear-gradient(180deg, rgba(255, 255, 255, .74), rgba(251, 248, 241, .46));
  box-shadow: 0 14px 30px -30px rgba(46, 59, 78, .8);
  min-width: 0;
}

.bead-panel__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .5rem;
  margin-bottom: .4rem;
}

.bead-panel__title {
  font-size: .68rem;
  letter-spacing: .28em;
  text-indent: .28em;
  color: var(--ink-soft, #5b6b80);
}

.bead-panel__meta {
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--ink-soft, #5b6b80);
  font-variant-numeric: tabular-nums;
}

.bead-row {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: .4rem;
  min-width: 0;
  padding-bottom: 3px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(46, 59, 78, .22) transparent;
  -webkit-overflow-scrolling: touch;
}

.bead-row::-webkit-scrollbar {
  height: 4px;
}

.bead-row::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background-color: rgba(46, 59, 78, .18);
}

.bead-row > * {
  flex: 0 0 auto;
}

.bead-row--acts {
  margin-top: .4rem;
}

/* ── 按钮 ── */

.bead-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .3rem;
  min-height: 40px;
  padding: .42rem .92rem;
  border-radius: var(--radius-pill, 999px);
  border: 1px solid var(--bead-line);
  background-color: rgba(255, 255, 255, .62);
  background-image: linear-gradient(180deg, rgba(255, 255, 255, .92), rgba(251, 248, 241, .66));
  color: var(--ink, #2e3b4e);
  font-size: .8rem;
  line-height: 1.2;
  letter-spacing: .1em;
  text-indent: .1em;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition:
    transform var(--dur-1, 220ms) var(--ease-out, ease-out),
    box-shadow var(--dur-1, 220ms) var(--ease-out, ease-out),
    background-color var(--dur-1, 220ms) var(--ease-out, ease-out);
}

.bead-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 22px -18px rgba(46, 59, 78, .75);
}

.bead-btn:active {
  transform: translateY(0) scale(.98);
}

.bead-btn:disabled {
  opacity: .38;
  cursor: default;
  transform: none;
  box-shadow: none;
}

.bead-btn[aria-pressed="true"] {
  border-color: transparent;
  background-image: linear-gradient(135deg, var(--sun, #ffd9a0) 0%, var(--peach, #f7c9a8) 46%, var(--blush, #f3b8c0) 100%);
  box-shadow:
    0 14px 26px -18px rgba(203, 122, 112, .95),
    inset 0 1px 0 rgba(255, 255, 255, .62);
}

.bead-btn--sm {
  min-height: 36px;
  padding: .3rem .7rem;
  font-size: .74rem;
}

.bead-btn--ghost {
  background-image: none;
  background-color: rgba(255, 255, 255, .5);
}

.bead-btn--solid {
  border-color: transparent;
  background-image: linear-gradient(135deg, var(--sun, #ffd9a0) 0%, var(--peach, #f7c9a8) 48%, var(--blush, #f3b8c0) 100%);
  box-shadow:
    0 18px 32px -20px rgba(203, 122, 112, .95),
    inset 0 1px 0 rgba(255, 255, 255, .6);
}

.bead-btn--cta {
  width: 100%;
  min-height: 46px;
  margin-top: .25rem;
  font-size: .86rem;
  letter-spacing: .18em;
  text-indent: .18em;
}

/* ── 色板 ── */

.bead-pal {
  display: grid;
  gap: .3rem;
}

.bead-pal-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: .45rem;
}

.bead-pal-row__name {
  width: 1.9rem;
  font-size: .62rem;
  letter-spacing: .04em;
  color: var(--ink-soft, #5b6b80);
  opacity: .82;
}

.bead-pal-row__set {
  display: flex;
  flex-wrap: nowrap;
  gap: .18rem;
  min-width: 0;
  padding: 1px 0;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}

.bead-pal-row__set::-webkit-scrollbar {
  display: none;
}

.bead-swatch {
  position: relative;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  background: none;
  border-radius: 50%;
  cursor: pointer;
  flex: 0 0 auto;
  -webkit-tap-highlight-color: transparent;
  transition: transform var(--dur-1, 220ms) var(--ease-out, ease-out);
}

.bead-swatch__dot {
  display: block;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  pointer-events: none;
}

.bead-swatch[aria-pressed="true"] {
  transform: scale(1.14);
}

.bead-swatch[aria-pressed="true"]::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  box-shadow:
    0 0 0 1.5px rgba(251, 248, 241, .95),
    0 0 0 3px rgba(46, 59, 78, .38);
  pointer-events: none;
}

/* ── 成图面板 ── */

html.is-bead-sheet,
html.is-bead-sheet body {
  overflow: hidden;
}

.bead-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(.6rem, 2.6vw, 1.8rem);
  background-color: rgba(46, 59, 78, .42);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  overflow: auto;
  overscroll-behavior: contain;
}

.bead-modal__card {
  position: relative;
  width: min(100%, 46rem);
  max-height: calc(100vh - 1.6rem);
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: clamp(.7rem, 2vw, 1.1rem);
  border-radius: var(--radius-lg, 28px);
  border: 1px solid rgba(255, 255, 255, .7);
  background-color: var(--paper, #fbf8f1);
  background-image: radial-gradient(120% 90% at 12% 0%, rgba(255, 255, 255, .96), rgba(251, 248, 241, 0) 62%);
  box-shadow: 0 40px 80px -40px rgba(20, 28, 44, .75);
}

.bead-modal__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .6rem;
  padding-bottom: .5rem;
}

.bead-modal__title {
  margin: 0;
  font-family: var(--font-display, serif);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--ink, #2e3b4e);
}

.bead-modal__close {
  min-height: 36px;
  padding: .3rem .8rem;
  border-radius: var(--radius-pill, 999px);
  border: 1px solid var(--bead-line);
  background-color: rgba(255, 255, 255, .7);
  font: inherit;
  font-size: .74rem;
  letter-spacing: .12em;
  text-indent: .12em;
  color: var(--ink-soft, #5b6b80);
  cursor: pointer;
}

.bead-modal__close:hover {
  color: var(--ink, #2e3b4e);
}

.bead-modal__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(.55rem, 2vw, 1rem);
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-bottom: .3rem;
}

.bead-preview {
  position: relative;
  width: 100%;
  max-width: 22rem;
  margin: 0 auto;
  align-self: start;
  border-radius: 18px;
  overflow: hidden;
  background-color: var(--paper-deep, #f4ecdd);
  box-shadow: 0 20px 40px -30px rgba(46, 59, 78, .8);
}

.bead-preview__canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.bead-controls {
  display: grid;
  gap: .55rem;
  min-width: 0;
  align-content: start;
}

.bead-field {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}

.bead-field__legend {
  padding: 0 0 .35rem;
  font-size: .64rem;
  letter-spacing: .26em;
  text-indent: .26em;
  color: var(--ink-soft, #5b6b80);
}

.bead-bgs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .4rem;
}

.bead-bg {
  display: grid;
  gap: .25rem;
  justify-items: center;
  padding: .3rem .25rem .35rem;
  border-radius: 14px;
  border: 1px solid var(--bead-line);
  background-color: rgba(255, 255, 255, .55);
  cursor: pointer;
  min-width: 0;
  transition:
    transform var(--dur-1, 220ms) var(--ease-out, ease-out),
    box-shadow var(--dur-1, 220ms) var(--ease-out, ease-out);
}

.bead-bg:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 22px -18px rgba(46, 59, 78, .7);
}

.bead-bg__thumb {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  border-radius: 10px;
}

.bead-bg__name {
  font-size: .64rem;
  letter-spacing: .04em;
  color: var(--ink-soft, #5b6b80);
  white-space: nowrap;
}

.bead-bg[aria-pressed="true"] {
  border-color: transparent;
  box-shadow:
    0 0 0 2px rgba(226, 199, 160, .95),
    0 14px 24px -18px rgba(46, 59, 78, .7);
}

.bead-bg[aria-pressed="true"] .bead-bg__name {
  color: var(--ink, #2e3b4e);
}

.bead-upload-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
  margin-top: .45rem;
  min-width: 0;
}

.bead-upload {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: .3rem .9rem;
  border-radius: var(--radius-pill, 999px);
  border: 1px dashed rgba(46, 59, 78, .22);
  background-color: rgba(255, 255, 255, .5);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--ink, #2e3b4e);
  cursor: pointer;
  overflow: hidden;
}

.bead-upload.is-set {
  border-style: solid;
  border-color: transparent;
  background-image: linear-gradient(135deg, var(--sun, #ffd9a0), var(--peach, #f7c9a8));
}

.bead-upload__input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.bead-upload__name {
  flex: 1 1 5rem;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: .7rem;
  color: var(--ink-soft, #5b6b80);
}

.bead-modal__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .8rem;
  padding-top: .55rem;
}

.bead-modal__foot .bead-btn--cta {
  width: auto;
  flex: 0 0 auto;
  min-width: 8.5rem;
  margin-top: 0;
}

.bead-modal__note {
  flex: 1 1 8rem;
  min-width: 0;
  margin: 0;
  font-size: .68rem;
  line-height: 1.5;
  color: var(--ink-soft, #5b6b80);
}

/* ── 断点 ── */

@media (max-width: 899px) {
  .bead-board-wrap {
    max-width: min(100%, 34rem);
    margin-inline: auto;
  }

  .bead-row--tpl {
    flex-wrap: wrap;
    overflow-x: visible;
    row-gap: .4rem;
  }
}

@media (min-width: 900px) {
  .bead-studio {
    grid-template-columns: minmax(0, 1fr) clamp(20rem, 25vw, 22.5rem);
    align-items: start;
  }

  .bead-row {
    flex-wrap: wrap;
  }

  .bead-modal__body {
    grid-template-columns: minmax(0, 1fr) minmax(15rem, 17rem);
    align-items: start;
  }
}

@media (max-width: 380px) {
  .bead-panel {
    padding: .55rem .6rem .45rem;
  }

  .bead-btn {
    padding: .38rem .78rem;
    font-size: .76rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bead-btn,
  .bead-swatch,
  .bead-bg,
  .bead-toast {
    transition-duration: 0ms;
  }

  .bead-btn:hover,
  .bead-bg:hover,
  .bead-swatch[aria-pressed="true"] {
    transform: none;
  }
}