/* ============================================================
 * themes.css — 主题公共层 + 植物标本书
 * 「课堂笔记」主题已独立于 css/classroom.css（单一来源），此处不再定义。
 * ============================================================ */

/* ---------- 主题选择器 ---------- */
.theme-picker { display: grid; gap: 10px; min-width: min(360px, 74vw); }
.theme-choice {
  display: grid; grid-template-columns: 54px 1fr 22px; align-items: center; gap: 12px;
  width: 100%; padding: 12px; text-align: left; border: 1px solid var(--ink-15);
  border-radius: 8px; background: rgba(255,255,255,.25); transition: .28s ease;
}
.theme-choice:hover, .theme-choice.active { border-color: var(--cinnabar); transform: translateY(-1px); }
.theme-swatches { display: flex; width: 54px; height: 32px; overflow: hidden; border-radius: 16px; border: 1px solid var(--ink-15); }
.theme-swatches i { flex: 1; }
.theme-name { display: block; font-size: 16px; letter-spacing: .12em; }
.theme-note { display: block; margin-top: 3px; color: var(--ink-60); font-size: 11px; letter-spacing: .04em; line-height: 1.5; }
.theme-check { color: var(--cinnabar); font-size: 18px; }

/* ---------- 各主题字体体系 ---------- */
:root[data-theme="botanical"] {
  --theme-body: "FangSong", "STFangsong", "KaiTi", "STKaiti", serif;
  --theme-display: "KaiTi", "STKaiti", "FangSong", serif;
  --theme-number: Georgia, "Times New Roman", serif;
}
:root[data-theme] body,
:root[data-theme] button,
:root[data-theme] input,
:root[data-theme] textarea { font-family: var(--theme-body); }
:root[data-theme] .date-title,
:root[data-theme] .sat-title,
:root[data-theme] .sunday-title,
:root[data-theme] .overlay-title,
:root[data-theme] .stat-sec-title,
:root[data-theme] .blessing-text { font-family: var(--theme-display); }
:root[data-theme] .stat-value,
:root[data-theme] .wheel-chance,
:root[data-theme] .hist-date,
:root[data-theme] .mg-date,
:root[data-theme] .week-num { font-family: var(--theme-number); }

/* ---------- 植物标本书风 ---------- */
:root[data-theme="botanical"] {
  --paper: #f3efe3; --paper-deep: #e5dfcd; --paper-card: #f7f3e8;
  --ink: #38443a; --ink-60: rgba(56,68,58,.62); --ink-45: rgba(56,68,58,.45);
  --ink-25: rgba(56,68,58,.25); --ink-15: rgba(56,68,58,.15);
  --cinnabar: #a65343; --cinnabar-deep: #7f3e34; --cinnabar-soft: rgba(166,83,67,.11);
  --gold: #b28a3d; --alarm: #c99529;
}
:root[data-theme="botanical"] body {
  background-image:
    radial-gradient(ellipse at 92% 8%, rgba(111,139,104,.24), transparent 25%),
    radial-gradient(ellipse at 5% 92%, rgba(151,118,69,.13), transparent 26%),
    repeating-linear-gradient(4deg, transparent 0 31px, rgba(93,84,57,.035) 31px 32px),
    linear-gradient(100deg, #f4f0e4, #ece6d5);
}
:root[data-theme="botanical"] .paper {
  border: 1px solid rgba(77,91,70,.32); border-radius: 1px;
  box-shadow: 4px 5px 0 rgba(111,139,104,.1), 0 12px 30px rgba(63,73,55,.13);
  background-image: repeating-linear-gradient(0deg, transparent 0 33px, rgba(75,96,69,.035) 33px 34px);
}
:root[data-theme="botanical"] .page { padding: 28px 26px 40px; }
:root[data-theme="botanical"] .page::before,
:root[data-theme="botanical"] .page::after {
  position: absolute; z-index: 0; color: rgba(84,117,76,.18); pointer-events: none;
  font-size: 78px; line-height: 1;
}
:root[data-theme="botanical"] .page::before { content: '❧'; right: 16px; top: 62px; transform: rotate(24deg); }
:root[data-theme="botanical"] .page::after { content: '☘'; left: 12px; bottom: 12px; transform: rotate(-18deg); }
:root[data-theme="botanical"] .page > * { position: relative; z-index: 1; }
:root[data-theme="botanical"] .page-head {
  padding: 12px 14px; border: 1px solid rgba(82,104,75,.35); background: rgba(247,243,232,.68);
}
:root[data-theme="botanical"] .date-title { letter-spacing: .16em; }
:root[data-theme="botanical"] .field-tag { color: #60785b; }
:root[data-theme="botanical"] .page-head::after {
  content: 'SPECIMEN · LONG SUMMER'; display: block; margin-top: 8px;
  color: #71816d; font: 9px/1.4 Georgia, serif; letter-spacing: .22em;
}
:root[data-theme="botanical"] .field-tag,
:root[data-theme="botanical"] .collect-date,
:root[data-theme="botanical"] .overlay-sub { font-family: Georgia, "Times New Roman", serif; }
:root[data-theme="botanical"] .blessing {
  margin: 25px 0; padding: 12px 10px; border-top: 1px solid #8fa087; border-bottom: 1px solid #8fa087;
}
:root[data-theme="botanical"] .blessing-deco { color: #6f8b68; font-size: 28px; }
:root[data-theme="botanical"] .items { counter-reset: specimen; }
:root[data-theme="botanical"] .item {
  margin: 7px 0; padding: 12px 10px; border: 1px dashed rgba(75,96,69,.34);
  background: rgba(249,246,237,.48); border-radius: 0;
}
:root[data-theme="botanical"] .item:nth-child(odd) { transform: rotate(-.12deg); }
:root[data-theme="botanical"] .item:nth-child(even) { transform: rotate(.12deg); }
:root[data-theme="botanical"] .no { color: #6f8069; font: 12px/1.8 Georgia, serif; }
:root[data-theme="botanical"] .state-btn { border-radius: 2px; transform: rotate(-3deg); border-color: #71816d; }
:root[data-theme="botanical"] .item.st-undone { background: rgba(166,83,67,.1); }
:root[data-theme="botanical"] .diary-input {
  border: 1px solid rgba(75,96,69,.34); border-radius: 0; padding: 14px;
  background: repeating-linear-gradient(transparent 0 31px, rgba(75,96,69,.16) 31px 32px);
  line-height: 32px;
}
:root[data-theme="botanical"] .stat-cell { border-radius: 0; border-style: dashed; background: rgba(249,246,237,.56); }
:root[data-theme="botanical"] .week-card { border-radius: 0; border-style: dashed; }
:root[data-theme="botanical"] #corner-btn {
  width: 46px; height: 40px; border: 1px dashed #6f8069; border-radius: 1px;
  color: #587752; background: #f7f3e8; transform: rotate(3deg);
  box-shadow: 3px 3px 0 rgba(111,139,104,.15); font-size: 15px;
}
:root[data-theme="botanical"] #corner-btn::before {
  content: '❧'; position: absolute; left: -9px; top: -12px; color: #799272;
  font-size: 18px; transform: rotate(-22deg);
}
:root[data-theme="botanical"] #corner-btn::after {
  content: 'FIELD'; position: absolute; left: 5px; bottom: 1px; color: rgba(88,119,82,.55);
  font: 6px/1 Georgia, serif; letter-spacing: .18em;
}
:root[data-theme="botanical"] #corner-btn:hover { transform: rotate(1deg) translateY(-2px) scale(1.04); }
:root[data-theme="botanical"] #corner-btn.is-return {
  color: #f7f3e8; background: #6f8b68; border-style: solid;
  box-shadow: 3px 3px 0 rgba(77,99,71,.22);
}
:root[data-theme="botanical"] #corner-btn.is-return::after { color: rgba(255,255,255,.62); }
:root[data-theme="botanical"] #level-dots {
  gap: 7px; padding: 7px 9px 6px; border: 1px dashed #71816d; border-radius: 1px;
  background-color: #eee8d8;
  background-image: repeating-linear-gradient(90deg, transparent 0 17px, rgba(83,104,75,.045) 17px 18px);
  box-shadow: 3px 4px 0 rgba(111,139,104,.15);
  transform: translateX(-50%) rotate(-.5deg);
}
:root[data-theme="botanical"] #level-dots::before {
  content: 'INDEX'; position: absolute; left: 6px; top: -8px; padding: 0 3px;
  background: #eee8d8; color: #71816d; font: 7px/1 Georgia, serif; letter-spacing: .16em;
}
:root[data-theme="botanical"] .ld {
  width: 32px; height: 29px; border: 1px solid rgba(88,119,82,.45); border-radius: 1px;
  color: #61715d; background: rgba(247,243,232,.68); font-family: var(--serif);
}
:root[data-theme="botanical"] .ld:nth-child(1) { transform: rotate(-2deg); }
:root[data-theme="botanical"] .ld:nth-child(2) { transform: rotate(1deg); }
:root[data-theme="botanical"] .ld:nth-child(3) { transform: rotate(-.5deg); }
:root[data-theme="botanical"] .ld.active {
  color: #f7f3e8; border-color: #587752; background: #6f8b68;
  box-shadow: 2px 2px 0 rgba(77,99,71,.18); transform: translateY(-2px) rotate(0);
}
:root[data-theme="botanical"] #toolbar-btn {
  width: 43px; height: 39px; border: 1px dashed #71816d; border-radius: 1px;
  background: #eee8d8; box-shadow: 3px 4px 0 rgba(111,139,104,.15); transform: rotate(-3deg);
}
:root[data-theme="botanical"] #toolbar-btn::after {
  content: '❧'; position: absolute; right: -7px; top: -10px; color: #6f8b68; font-size: 16px;
}
:root[data-theme="botanical"] #toolbar-btn:hover { transform: rotate(-1deg) translateY(-2px); }
:root[data-theme="botanical"] #toolbar-btn.active { transform: rotate(87deg); border-style: solid; background: #dce6d7; }
:root[data-theme="botanical"] .tb-stroke { background: #587752; border-radius: 0; }
:root[data-theme="botanical"] .tb-list {
  min-width: 210px; padding: 10px; gap: 5px; border: 1px dashed #71816d; border-radius: 1px;
  background-color: #eee8d8;
  background-image: repeating-linear-gradient(0deg, transparent 0 31px, rgba(83,104,75,.045) 31px 32px);
  box-shadow: 4px 5px 0 rgba(111,139,104,.15), 0 12px 30px rgba(63,73,55,.13);
}
:root[data-theme="botanical"] .tb-list::before {
  content: 'SPECIMEN CABINET'; display: block; padding: 2px 5px 7px; color: #71816d;
  font: 8px/1 Georgia,serif; letter-spacing: .2em; border-bottom: 1px solid rgba(88,119,82,.35);
}
:root[data-theme="botanical"] .tb-group { position: relative; padding: 5px 4px 4px 29px; border: 1px dashed rgba(88,119,82,.3); background: rgba(247,243,232,.34); }
:root[data-theme="botanical"] .tb-group + .tb-group { margin-top: 8px; border-top: 1px dashed rgba(88,119,82,.3); }
:root[data-theme="botanical"] .tb-group-title {
  display: block; position: absolute; left: 5px; top: 7px; bottom: 7px; width: 18px;
  color: #587752; border-right: 1px solid rgba(88,119,82,.35); font: 8px/1.5 Georgia,serif;
  writing-mode: vertical-rl; letter-spacing: .12em; text-align: center;
}
:root[data-theme="botanical"] .tb-group-browse .tb-group-title::before { content: 'DATE INDEX'; }
:root[data-theme="botanical"] .tb-group-record .tb-group-title::before { content: 'COLLECTION'; }
:root[data-theme="botanical"] .tb-group-tools .tb-group-title::before { content: 'ARCHIVE'; }
:root[data-theme="botanical"] .tb-item { border: 1px solid transparent; border-radius: 1px; color: #52624f; }
:root[data-theme="botanical"] .tb-item:nth-child(odd) { transform: rotate(-.18deg); }
:root[data-theme="botanical"] .tb-item:nth-child(even) { transform: rotate(.18deg); }
:root[data-theme="botanical"] #toolbar-panel.open .tb-item:hover { transform: translateX(3px) rotate(0); border-color: rgba(88,119,82,.3); background: rgba(220,230,215,.65); }
:root[data-theme="botanical"] .tb-icon { border: 1px dashed #71816d; border-radius: 1px; color: #587752; background: rgba(247,243,232,.55); }
:root[data-theme="botanical"] .tb-item:hover .tb-icon { color: #f7f3e8; border-color: #587752; background: #6f8b68; }
:root[data-theme="botanical"] .item.st-done .strike-wrap::after { background: linear-gradient(90deg, #587752, #8fa786); }
:root[data-theme="botanical"] .item.st-done .state-btn { border-color: #6f8b68; color: #587752; }
:root[data-theme="botanical"] .sat-title::before,
:root[data-theme="botanical"] .sat-title::after { content: '❧'; color: #6f8b68; font-size: 18px; }

/* ---------- 转盘主题适配 ---------- */
:root[data-theme="botanical"] .wheel-page {
  padding: 18px; border: 1px dashed #71816d; background: rgba(247,243,232,.58);
  box-shadow: 4px 5px 0 rgba(111,139,104,.11);
}
:root[data-theme="botanical"] .wheel-box::before,
:root[data-theme="botanical"] .wheel-box::after { position: absolute; z-index: 6; color: #6f8b68; pointer-events: none; }
:root[data-theme="botanical"] .wheel-box::before { content: '❧'; left: -10px; top: 18px; font-size: 28px; transform: rotate(-30deg); }
:root[data-theme="botanical"] .wheel-box::after { content: 'FIELD LOTTERY'; right: -15px; bottom: 20px; font: 8px/1 Georgia,serif; letter-spacing: .18em; transform: rotate(90deg); }
:root[data-theme="botanical"] .wheel-canvas { filter: drop-shadow(4px 6px 0 rgba(79,99,72,.14)); }
:root[data-theme="botanical"] .wheel-pointer { border-top-color: #6f8b68; filter: none; }
:root[data-theme="botanical"] .wheel-pointer::after { background: #b28a3d; }
:root[data-theme="botanical"] .wheel-hub {
  border: 1px dashed #587752; border-radius: 48% 52% 46% 54%; color: #587752;
  background: #f3efe3; box-shadow: 3px 4px 0 rgba(88,119,82,.18);
}
:root[data-theme="botanical"] .wheel-hub:hover { color: #f7f3e8; background: #6f8b68; box-shadow: 3px 4px 0 rgba(88,119,82,.25); }
:root[data-theme="botanical"] .paper-box { padding: 12px; border: 1px dashed rgba(88,119,82,.42); background: rgba(247,243,232,.55); }
:root[data-theme="botanical"] .prob-list.open { padding: 10px; border-left: 3px solid #6f8b68; background: rgba(220,230,215,.48); }

/* ---------- 月视图主题适配 ---------- */
:root[data-theme="botanical"] .month-view {
  max-width: 620px; padding: 20px 18px 24px; border: 1px dashed #71816d;
  background-color: rgba(247,243,232,.7);
  background-image: repeating-linear-gradient(0deg, transparent 0 31px, rgba(83,104,75,.045) 31px 32px);
  box-shadow: 5px 6px 0 rgba(111,139,104,.13);
}
:root[data-theme="botanical"] .month-view::before {
  content: 'SEASONAL SPECIMEN INDEX'; display: block; width: max-content; margin: -29px 0 9px 8px;
  padding: 2px 7px; color: #587752; background: #eee8d8; border: 1px solid #71816d;
  font: 8px/1.4 Georgia,serif; letter-spacing: .18em; transform: rotate(-1deg);
}
:root[data-theme="botanical"] .month-view .ov-big-title { color: #465d43; letter-spacing: .34em; }
:root[data-theme="botanical"] .month-summary-card {
  flex-direction: column; align-items: center; gap: 2px; border: 1px dashed rgba(88,119,82,.5);
  background: rgba(238,232,216,.78); transform: rotate(-.25deg);
}
:root[data-theme="botanical"] .month-summary-card:nth-child(2) { transform: rotate(.35deg); }
:root[data-theme="botanical"] .month-summary-value { color: #587752; font-family: Georgia,serif; }
:root[data-theme="botanical"] .month-grid {
  gap: 9px 6px; padding: 14px 10px; border-top: 1px solid rgba(88,119,82,.35);
  border-bottom: 1px solid rgba(88,119,82,.35);
}
:root[data-theme="botanical"] .mg-head { color: #52624f; font-family: Georgia,serif; }
:root[data-theme="botanical"] .mg-week-label {
  width: 26px; min-height: 39px; justify-content: center; border: 1px dashed rgba(88,119,82,.45);
  background: #eee8d8; color: #587752; transform: rotate(-2deg);
}
:root[data-theme="botanical"] .mg-circle {
  width: 39px; height: 39px; border-radius: 48% 52% 46% 54%; border-color: #71816d;
  background: radial-gradient(circle closest-side, rgba(111,139,104,.32) calc(var(--fill) - 1%), rgba(247,243,232,.72) var(--fill));
}
:root[data-theme="botanical"] .mg-cell:nth-child(odd) .mg-circle { transform: rotate(-2deg); }
:root[data-theme="botanical"] .mg-cell:nth-child(even) .mg-circle { transform: rotate(1.5deg); }
:root[data-theme="botanical"] .mg-circle.all-done { color: #f7f3e8; background: #6f8b68; border-color: #587752; }
:root[data-theme="botanical"] .mg-circle.all-done::after { content: '❧'; width: auto; height: auto; top: -11px; right: -6px; background: none; color: #6f8b68; font-size: 17px; }
:root[data-theme="botanical"] .mg-circle.has-undone { color: #a65343; border-color: #a65343; background: rgba(166,83,67,.08); }
:root[data-theme="botanical"] .mg-circle.is-sunday { border-radius: 2px; background: #e4decf; }
:root[data-theme="botanical"] .mg-legend { padding: 8px; border: 1px dashed rgba(88,119,82,.38); background: rgba(238,232,216,.55); }

@media (max-width: 560px) {
  :root[data-theme="botanical"] .month-view { padding-left: 9px; padding-right: 9px; }
  :root[data-theme="botanical"] .month-grid { grid-template-columns: 23px repeat(7, 1fr); gap: 8px 2px; padding-left: 0; padding-right: 0; }
  :root[data-theme="botanical"] .mg-circle { width: 34px; height: 34px; font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  .theme-choice { transition: none; }
}