:root {
  --pink: #ff8fab;
  --pink-deep: #ff6f91;
  --pink-soft: #ffd6e0;
  --beige: #fff6e6;
  --beige-deep: #f7e3c0;
  --ink: #5a3d4a;
  --ink-soft: #8a6b76;
  --shadow: 0 12px 30px rgba(255, 111, 145, 0.25);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--ink);
  background: linear-gradient(160deg, #fff6e6 0%, #ffe9ef 55%, #ffd6e0 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* 背景装饰圆 */
.bg-deco {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(220px 220px at 12% 18%, rgba(255, 214, 224, 0.7), transparent 70%),
    radial-gradient(260px 260px at 88% 12%, rgba(247, 227, 192, 0.8), transparent 70%),
    radial-gradient(300px 300px at 80% 90%, rgba(255, 214, 224, 0.6), transparent 70%),
    radial-gradient(240px 240px at 18% 88%, rgba(247, 227, 192, 0.7), transparent 70%);
}

/* ===== 主页 ===== */
.wrap {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 18px 40px;
  gap: 22px;
}

.hero { text-align: center; }
.hero h1 {
  font-size: clamp(22px, 6vw, 34px);
  letter-spacing: 2px;
  color: var(--ink);
}
.hero .sub {
  margin-top: 8px;
  font-size: clamp(13px, 3.4vw, 15px);
  color: var(--ink-soft);
  letter-spacing: 4px;
}

/* 中央大抽按钮 */
.draw-btn {
  width: clamp(150px, 44vw, 230px);
  height: clamp(150px, 44vw, 230px);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: radial-gradient(circle at 32% 28%, #ffb3c6, var(--pink-deep) 70%);
  box-shadow: var(--shadow), inset 0 6px 14px rgba(255, 255, 255, 0.45);
  color: #fff;
  font-size: clamp(58px, 16vw, 92px);
  font-weight: 800;
  letter-spacing: 4px;
  display: grid;
  place-items: center;
  transition: transform .15s ease, box-shadow .15s ease;
  animation: floaty 3.2s ease-in-out infinite;
}
.draw-btn span { text-shadow: 0 3px 6px rgba(180, 60, 90, 0.4); }
.draw-btn:hover { transform: scale(1.04); }
.draw-btn:active { transform: scale(0.95); }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hint {
  font-size: clamp(13px, 3.6vw, 15px);
  color: var(--ink-soft);
  text-align: center;
  max-width: 320px;
}

/* 话题卡片 */
.card {
  width: min(92vw, 620px);
  background: linear-gradient(150deg, #fffdf6, #fff3df);
  border: 2px solid var(--pink-soft);
  border-radius: 24px;
  padding: 30px 26px;
  box-shadow: 0 16px 40px rgba(255, 143, 171, 0.22);
  text-align: center;
  display: none;
}
.card.show { display: block; }
.card.pop { animation: pop .45s cubic-bezier(.2,.9,.3,1.3); }

@keyframes pop {
  0% { transform: scale(0.85); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.card-tag {
  display: inline-block;
  background: var(--pink);
  color: #fff;
  font-size: 13px;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.topic-text {
  font-size: clamp(20px, 5.4vw, 28px);
  line-height: 1.6;
  font-weight: 600;
  color: var(--ink);
}

/* 换一换 */
.change-btn {
  display: none;
  border: 2px solid var(--pink);
  background: #fff;
  color: var(--pink-deep);
  font-size: 16px;
  font-weight: 600;
  padding: 11px 26px;
  border-radius: 999px;
  cursor: pointer;
  transition: background .15s ease, transform .1s ease;
}
.change-btn:hover { background: var(--pink-soft); }
.change-btn:active { transform: scale(0.96); }

.credit {
  margin-top: 10px;
  text-align: center;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--ink-soft);
  opacity: 0.85;
}

/* ===== 后台 ===== */
.admin-body { background: linear-gradient(160deg, #fff6e6, #ffe9ef); }
.admin-wrap {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 18px 60px;
}
.admin-head h1 {
  font-size: 24px;
  color: var(--ink);
  letter-spacing: 1px;
}
.admin-head p {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}
.topic-list { margin: 22px 0; display: flex; flex-direction: column; gap: 12px; }
.row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fffdf6;
  border: 1.5px solid var(--pink-soft);
  border-radius: 14px;
  padding: 10px 12px;
}
.row .cb { width: 20px; height: 20px; accent-color: var(--pink-deep); flex: none; cursor: pointer; }
.row .txt {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 15px;
  color: var(--ink);
  padding: 6px 4px;
  outline: none;
  min-width: 0;
}
.row .txt:focus { background: #fff3df; border-radius: 8px; }
.row .del {
  flex: none;
  border: none;
  background: #ffe1e8;
  color: var(--pink-deep);
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 13px;
}
.row .del:hover { background: #ffc9d6; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.btn-add, .btn-save, .btn-reset {
  border: none;
  border-radius: 999px;
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .1s ease, filter .15s ease;
}
.btn-add { background: var(--beige-deep); color: var(--ink); }
.btn-save { background: var(--pink-deep); color: #fff; flex: 1; min-width: 140px; }
.btn-reset { background: #fff; color: var(--ink-soft); border: 1.5px solid var(--pink-soft); }
.btn-add:hover, .btn-reset:hover, .btn-save:hover { filter: brightness(1.04); }
.btn-save:active, .btn-add:active, .btn-reset:active { transform: scale(0.97); }

.status { margin-top: 14px; font-size: 14px; min-height: 20px; color: var(--pink-deep); font-weight: 600; }
.admin-tip { margin-top: 18px; font-size: 13px; color: var(--ink-soft); }
.admin-tip a { color: var(--pink-deep); }

/* ===== 登录层 ===== */
.login-mask {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #fff6e6, #ffe9ef);
  padding: 20px;
}
.login-box {
  width: min(92vw, 360px);
  background: linear-gradient(150deg, #fffdf6, #fff3df);
  border: 2px solid var(--pink-soft);
  border-radius: 22px;
  box-shadow: 0 18px 44px rgba(255, 143, 171, 0.25);
  padding: 30px 26px;
  text-align: center;
}
.login-box h2 { font-size: 22px; color: var(--ink); letter-spacing: 2px; }
.login-sub { margin: 8px 0 20px; font-size: 13px; color: var(--ink-soft); }
.login-input {
  width: 100%;
  border: 1.5px solid var(--pink-soft);
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 15px;
  outline: none;
  color: var(--ink);
  margin-bottom: 14px;
  background: #fff;
  box-sizing: border-box;
}
.login-input:focus { border-color: var(--pink); }
.login-btn {
  width: 100%;
  border: none;
  border-radius: 999px;
  padding: 13px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #fff;
  background: var(--pink-deep);
  cursor: pointer;
  transition: filter .15s ease, transform .1s ease;
}
.login-btn:hover { filter: brightness(1.05); }
.login-btn:active { transform: scale(0.98); }
.login-btn:disabled { opacity: 0.6; cursor: default; }
.login-err { margin-top: 14px; min-height: 18px; font-size: 13px; color: #e23b5a; font-weight: 600; }