/* 树叶书签作品投票 —— 共享样式（自然 · 纸张 · 绿色） */
:root {
  --green-900: #1d4630;
  --green-700: #2f6b45;
  --green-500: #4a9b63;
  --green-300: #93cfa6;
  --green-100: #e6f3ea;
  --paper: #fbf9f1;
  --paper-2: #f3efe0;
  --ink: #253429;
  --muted: #6d7c71;
  --gold: #e0a800;
  --red: #c0533f;
  --shadow: 0 10px 26px rgba(24, 60, 38, .12);
  --radius: 20px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
  background: var(--paper);
  -webkit-text-size-adjust: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  border-radius: 999px;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
button:active { transform: scale(.97); }

input, select {
  font-family: inherit;
  font-size: 15px;
  padding: 8px 12px;
  border: 2px solid var(--green-100);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  outline: none;
}
input:focus, select:focus { border-color: var(--green-300); }

.btn {
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 600;
  background: var(--green-700);
  color: #fff;
  box-shadow: 0 4px 12px rgba(47, 107, 69, .25);
}
.btn:hover { background: var(--green-500); }
.btn.ghost {
  background: #fff;
  color: var(--green-700);
  border: 2px solid var(--green-300);
  box-shadow: none;
}
.btn.ghost:hover { background: var(--green-100); }
.btn.warn { background: var(--red); box-shadow: 0 4px 12px rgba(192, 83, 63, .25); }
.btn.warn:hover { background: #d46752; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* 卡片网格 */
.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  position: relative;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 3px solid transparent;
  transition: border-color .25s ease, box-shadow .25s ease, transform .2s ease;
}
.card.winner {
  border-color: var(--gold);
  box-shadow: 0 0 0 6px rgba(224, 168, 0, .15), var(--shadow);
}

.photo {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--paper-2), #e8eee6);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo .placeholder {
  color: #a9b6ac;
  font-size: 14px;
  text-align: center;
  line-height: 1.7;
  padding: 10px;
}
.photo .placeholder .big { font-size: 34px; display: block; margin-bottom: 4px; }

/* 图片切换小圆点 */
.dots {
  position: absolute;
  bottom: 8px;
  left: 0; right: 0;
  display: flex;
  gap: 5px;
  justify-content: center;
}
.dots i {
  width: 7px; height: 7px; border-radius: 50%;
  background: rgba(255, 255, 255, .65);
  box-shadow: 0 0 3px rgba(0, 0, 0, .3);
}
.dots i.on { background: #fff; width: 16px; border-radius: 4px; }

.card-body { padding: 14px 16px 16px; }

.group-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--green-900);
}
.group-name .crown { font-size: 20px; }

.vote-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 8px 0 6px;
}
.vote-num {
  font-size: 34px;
  font-weight: 800;
  color: var(--green-700);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.vote-unit { font-size: 14px; color: var(--muted); }

.bar {
  height: 12px;
  background: var(--green-100);
  border-radius: 999px;
  overflow: hidden;
}
.bar > span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--green-300), var(--green-500));
  transition: width .6s cubic-bezier(.34, 1.3, .64, 1);
}
.card.winner .bar > span { background: linear-gradient(90deg, #f4cf6a, var(--gold)); }

/* 大屏顶栏 */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 18px 4px 12px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand h1 {
  margin: 0;
  font-size: 34px;
  letter-spacing: 2px;
  color: var(--green-900);
}
.brand .leaf { font-size: 32px; }
.tools { display: flex; gap: 10px; flex-wrap: wrap; }

/* 二维码区 */
.qr-panel {
  display: flex;
  align-items: center;
  gap: 22px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 22px;
  flex-wrap: wrap;
}
.qr-panel .qr-box {
  background: #fff;
  padding: 8px;
  border-radius: 14px;
  border: 3px dashed var(--green-300);
  line-height: 0;
}
.qr-panel .qr-box svg { display: block; width: 168px; height: 168px; }
.qr-panel .info h2 { margin: 0 0 6px; font-size: 24px; color: var(--green-900); }
.qr-panel .info .url {
  font-size: 26px;
  font-weight: 700;
  color: var(--green-700);
  font-family: ui-monospace, Consolas, monospace;
  letter-spacing: 1px;
}
.qr-panel .info p { margin: 6px 0 0; color: var(--muted); font-size: 15px; line-height: 1.7; }

.stats { display: flex; gap: 26px; margin-left: auto; text-align: center; }
.stats .n { font-size: 30px; font-weight: 800; color: var(--green-700); font-variant-numeric: tabular-nums; }
.stats .l { font-size: 13px; color: var(--muted); }

/* 手机投票页 */
body.voter {
  min-height: 100vh;
  padding-bottom: 104px;
  background: linear-gradient(180deg, #eaf6ee 0%, var(--paper) 38%);
}
.v-header { text-align: center; padding: 22px 18px 6px; }
.v-header .leaf { font-size: 36px; }
.v-header h1 { margin: 4px 0 6px; font-size: 24px; color: var(--green-900); letter-spacing: 1px; }
.v-header p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }

.tipbar {
  margin: 14px 14px 4px;
  padding: 12px 16px;
  border-radius: 14px;
  background: var(--green-100);
  color: var(--green-900);
  font-size: 15px;
  line-height: 1.6;
  text-align: center;
}
.tipbar.warn { background: #fdeceb; color: var(--red); }
.tipbar.ok { background: #e6f3d9; color: var(--green-900); }

body.voter .grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 12px 14px 0;
}
body.voter .card { border-radius: 16px; border-width: 3px; }
body.voter .card.pickable { cursor: pointer; }
body.voter .card.selected {
  border-color: var(--green-500);
  box-shadow: 0 0 0 5px rgba(74, 155, 99, .18), var(--shadow);
}
body.voter .card.selected::after {
  content: "✓";
  position: absolute;
  top: 8px; right: 8px;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--green-500);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .2);
}
body.voter .card.mine { border-color: var(--gold); }
body.voter .card.mine::before {
  content: "我投的";
  position: absolute;
  top: 8px; left: 8px;
  background: var(--gold);
  color: #fff;
  font-size: 12px;
  padding: 3px 9px;
  border-radius: 999px;
  z-index: 2;
  font-weight: 700;
}
body.voter .card-body { padding: 10px 12px 12px; }
body.voter .group-name { font-size: 16px; }
body.voter .vote-num { font-size: 24px; }

.actionbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0px));
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--green-100);
  z-index: 20;
}
.actionbar .count { font-size: 15px; color: var(--muted); flex: 1; }
.actionbar .count b { color: var(--green-700); font-size: 19px; }
.actionbar .btn { padding: 13px 26px; font-size: 17px; }

/* 弹层（管理面板 / 口令） */
.mask {
  position: fixed;
  inset: 0;
  background: rgba(18, 38, 26, .55);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 18px;
  z-index: 60;
}
.mask.show { display: flex; }
.modal {
  background: var(--paper);
  border-radius: 22px;
  width: min(980px, 100%);
  max-height: 88vh;
  overflow: auto;
  padding: 24px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .3);
}
.modal h2 { margin: 0 0 4px; font-size: 22px; color: var(--green-900); }
.modal .sub { color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.modal .row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.modal .field { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }
.modal hr { border: none; border-top: 1px dashed #d8ded4; margin: 18px 0; }

.admin-group {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: #fff;
  border-radius: 16px;
  padding: 12px;
  margin-bottom: 10px;
}
.admin-group .pics { display: flex; gap: 8px; flex-wrap: wrap; }
.admin-group .pic { position: relative; width: 84px; height: 84px; border-radius: 12px; overflow: hidden; background: var(--paper-2); }
.admin-group .pic img { width: 100%; height: 100%; object-fit: cover; }
.admin-group .pic button {
  position: absolute;
  top: 3px; right: 3px;
  width: 22px; height: 22px;
  padding: 0;
  background: rgba(0, 0, 0, .55);
  color: #fff;
  font-size: 13px;
  line-height: 1;
}
.admin-group .pic.add {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--green-300);
  background: var(--green-100);
  color: var(--green-700);
  font-size: 24px;
  cursor: pointer;
}

/* 轻提示 */
.toast {
  position: fixed;
  left: 50%;
  bottom: 120px;
  transform: translateX(-50%) translateY(20px);
  background: rgba(29, 70, 48, .95);
  color: #fff;
  padding: 11px 20px;
  border-radius: 999px;
  font-size: 15px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
  z-index: 90;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.credential-tools { background: #fff; border-radius: 16px; padding: 14px; margin: 12px 0 18px; }
.temporary-qr { display: none; align-items: center; gap: 14px; margin-top: 12px; }
.temporary-qr.show { display: flex; }
.temporary-qr svg { width: 132px; height: 132px; flex: none; }
.temporary-qr .sub { margin: 0; overflow-wrap: anywhere; }

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .brand h1 { font-size: 26px; }
  .qr-panel .info .url { font-size: 20px; }
  .stats { margin-left: 0; }
}

/* 平板端 */
@media (max-width: 1100px) {
  .wrap { padding-left: 14px !important; padding-right: 14px !important; }
  .grid, body.voter .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qr-panel { align-items: flex-start; }
  .qr-panel .info { flex: 1; min-width: 260px; }
  .stats { width: 100%; justify-content: space-around; margin-left: 0; }
}

/* 手机端 */
@media (max-width: 600px) {
  .topbar { padding-top: 12px; }
  .brand h1 { font-size: 21px; letter-spacing: 0; }
  .brand .leaf { font-size: 26px; }
  .tools { width: 100%; }
  .tools .btn { flex: 1; }
  .qr-panel { display: block; padding: 14px; }
  .qr-panel .qr-box { width: fit-content; margin: 0 auto 14px; }
  .qr-panel .qr-box svg { width: min(168px, 48vw); height: min(168px, 48vw); }
  .qr-panel .info h2 { font-size: 18px; }
  .qr-panel .info .url { font-size: 16px; overflow-wrap: anywhere; }
  .stats { gap: 8px; margin-top: 14px; }
  .stats .n { font-size: 24px; }
  .grid, body.voter .grid { grid-template-columns: 1fr; gap: 12px; }
  body.voter .grid { padding-left: 10px; padding-right: 10px; }
  .v-header { padding-top: 14px; }
  .v-header h1 { font-size: 21px; }
  .modal { padding: 16px; border-radius: 18px; max-height: 92vh; }
  .admin-group { flex-direction: column; }
  .admin-group > div:first-child { width: 100% !important; }
  .admin-group .pics { width: 100%; }
  .actionbar { padding-left: 12px; padding-right: 12px; }
  .actionbar .btn { padding: 12px 18px; font-size: 15px; }
  .temporary-qr { flex-direction: column; align-items: flex-start; }
}

/* 手机端页脚：教师入口 */
.v-footer { text-align: center; margin: 22px 0 10px; }
.linkbtn {
  background: none;
  color: var(--muted);
  font-size: 13px;
  padding: 8px 12px;
  text-decoration: underline dotted;
}
.linkbtn:hover { color: var(--green-700); }

/* 大屏页：老师端网址小字 */
.qr-panel .info .url-sub {
  margin-top: 8px;
  font-size: 14px;
  color: var(--muted);
}
.qr-panel .info .url-sub b {
  color: var(--green-700);
  font-family: ui-monospace, Consolas, monospace;
  font-size: 15px;
  letter-spacing: .5px;
}