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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --green: #16a34a;
  --amber: #d97706;
  --red: #dc2626;
  --radius: 12px;
}

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

.hidden { display: none !important; }

/* 弹窗 */
.modal {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  z-index: 100;
}
.modal-box {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px 22px;
  width: 100%;
  max-width: 420px;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}
.modal-box h2 { font-size: 24px; margin-bottom: 8px; }
.modal-box p { color: var(--muted); font-size: 15px; margin-bottom: 20px; }
.modal-box input {
  width: 100%; padding: 13px 16px;
  border: 1px solid var(--border); border-radius: 8px;
  font-size: 17px; margin-bottom: 14px;
  outline: none;
}
.modal-box input:focus { border-color: var(--primary); }
.modal-box .btn { width: 100%; padding: 12px; font-size: 17px; }

/* 按钮 */
.btn {
  border: none; cursor: pointer;
  border-radius: 8px;
  padding: 12px 22px;
  font-size: 16px;
  transition: background 0.15s;
  white-space: nowrap;
}
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.ghost {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border);
  padding: 8px 14px; font-size: 14px;
}
.btn.ghost:hover { color: var(--primary); border-color: var(--primary); }

/* 标记已读按钮 */
.btn-read { padding: 14px 30px; font-size: 17px; }

/* 顶部 */
header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  max-width: 1040px; margin: 0 auto;
  padding: 12px 16px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px 16px;
  flex-wrap: wrap;
}
.header-inner h1 { font-size: 22px; }
.user { display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--muted); }
.user b { color: var(--text); }

/* 主体 */
main {
  max-width: 1040px; margin: 0 auto;
  padding: 16px 16px 60px;
}

.upload-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  margin-bottom: 20px;
}
#upload-form { display: flex; gap: 10px; }
#number-input {
  flex: 1; min-width: 0;
  padding: 14px 16px;
  border: 1px solid var(--border); border-radius: 8px;
  font-size: 17px; font-family: Consolas, Menlo, "Courier New", monospace;
  outline: none;
}
#number-input:focus { border-color: var(--primary); }

.error-text { color: var(--red); font-size: 14px; margin-top: 8px; min-height: 20px; }

/* 标签：三个等宽大按钮，占满整行；随 header 一起吸顶，滚动时也可切换 */
.tabs {
  display: flex; gap: 10px;
  max-width: 1040px; margin: 0 auto;
  padding: 0 16px 14px;
}
.tab {
  flex: 1;
  border: 1px solid var(--border); cursor: pointer;
  background: var(--card);
  padding: 16px 0;
  border-radius: 10px;
  font-size: 17px; color: var(--muted);
  text-align: center;
  transition: all 0.15s;
}
.tab:hover { background: #eef1f6; border-color: var(--primary); color: var(--primary); }
.tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.tab .count { font-size: 13px; opacity: 0.75; }

/* 卡片 */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.badge { font-size: 14px; padding: 4px 12px; border-radius: 999px; }
.badge.unread { background: #fef3c7; color: var(--amber); }
.badge.read { background: #dcfce7; color: var(--green); }
.time { font-size: 14px; color: var(--muted); }

.number {
  font-family: Consolas, Menlo, "Courier New", monospace;
  font-size: 26px; font-weight: 600;
  letter-spacing: 2px;
  word-break: break-all;
  cursor: pointer;
  padding: 8px 0;
  transition: color 0.15s;
}
.number:hover { color: var(--primary); }

.card-meta { font-size: 15px; color: var(--muted); margin-bottom: 14px; }

.card-bottom {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
}
.avg { font-size: 16px; color: var(--muted); }
.avg b { color: var(--amber); font-size: 20px; }
.avg.none { color: #9ca3af; }

/* 打分 */
.rating { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.score-btns { display: flex; gap: 4px; flex-wrap: wrap; }
.score-btn {
  width: 48px; height: 48px;
  border: 1px solid var(--border); border-radius: 10px;
  background: #fff; cursor: pointer;
  font-size: 18px; color: var(--text);
  transition: all 0.12s;
}
.score-btn:hover { border-color: var(--primary); color: var(--primary); }
.score-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.my-score { font-size: 15px; color: var(--muted); }
.my-score b { color: var(--primary); }

.empty { text-align: center; color: var(--muted); padding: 48px 0; font-size: 16px; }

/* toast */
.toast {
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%);
  background: rgba(17, 24, 39, 0.92); color: #fff;
  padding: 12px 24px; border-radius: 8px; font-size: 15px;
  z-index: 200;
  white-space: nowrap;
  max-width: 90vw;
}

/* ---------- 手机窄屏微调 ---------- */
@media (max-width: 480px) {
  #upload-form { flex-direction: column; }
  #upload-form .btn { width: 100%; }
  .header-inner h1 { font-size: 20px; }
  .number { font-size: 24px; }
}

/* ---------- 电脑大屏：更大字号、更宽松布局 ---------- */
@media (min-width: 768px) {
  .header-inner { padding: 16px 24px; }
  .header-inner h1 { font-size: 26px; }
  .user { font-size: 16px; }

  main { padding: 28px 24px 80px; }

  .upload-card { padding: 22px; margin-bottom: 24px; }
  #number-input { font-size: 18px; padding: 16px 18px; }
  #upload-form .btn { font-size: 17px; padding: 14px 28px; }

  .tab { font-size: 18px; padding: 18px 0; }

  .card { padding: 22px 26px; margin-bottom: 20px; }
  .badge { font-size: 15px; }
  .time { font-size: 15px; }
  .number { font-size: 34px; letter-spacing: 3px; }
  .card-meta { font-size: 16px; }
  .avg { font-size: 17px; }
  .avg b { font-size: 22px; }
  .score-btn { width: 56px; height: 56px; font-size: 20px; border-radius: 12px; }
  .btn-read { padding: 16px 36px; font-size: 18px; }
  .my-score { font-size: 16px; }
}