:root {
  color-scheme: light;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #17202a;
  background: #f4f6f7;
  letter-spacing: 0;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; }
button, input, select { font: inherit; letter-spacing: 0; }
button { cursor: pointer; }

.topbar {
  min-height: 72px;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #fff;
  background: #20262c;
  border-bottom: 3px solid #1f8a70;
}

h1, h2 { margin: 0; letter-spacing: 0; }
h1 { font-size: 21px; line-height: 1.35; }
h2 { font-size: 17px; }
.service-state, .section-heading span { font-size: 13px; color: #66727d; }
.topbar .service-state { color: #c8d0d7; }
.admin-auth { display: flex; align-items: center; gap: 8px; }
.admin-auth label { font-size: 13px; color: #d5dadd; }

input, select {
  min-height: 36px;
  padding: 7px 10px;
  border: 1px solid #b8c0c7;
  border-radius: 4px;
  background: #fff;
}

button {
  min-height: 36px;
  padding: 7px 13px;
  border: 1px solid #aab4bc;
  border-radius: 4px;
  color: #26323c;
  background: #fff;
}
button:hover { background: #edf1f3; }
button:disabled { cursor: default; opacity: .55; }
.primary { color: #fff; border-color: #176b57; background: #1f8a70; }
.primary:hover { background: #176b57; }
.danger { color: #a12622; border-color: #d4aaa8; }
.icon-button { width: 36px; padding: 0; font-weight: 700; }

main { width: min(1480px, 100%); margin: 0 auto; }
section { padding: 24px 28px; }
.upload-band { background: #fff; border-bottom: 1px solid #dce1e5; }
.video-band { min-height: 400px; }
.section-heading {
  min-height: 30px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

#upload-form {
  display: grid;
  grid-template-columns: minmax(260px, 2fr) minmax(180px, 1fr) 150px auto;
  align-items: end;
  gap: 12px;
}
#upload-form label { display: grid; gap: 5px; font-size: 13px; color: #4f5b64; }
#upload-progress { width: 100%; height: 8px; margin-top: 14px; accent-color: #1f8a70; }

.table-scroll { overflow: auto; border: 1px solid #d7dde1; background: #fff; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #e3e7ea; vertical-align: middle; }
th { position: sticky; top: 0; z-index: 1; color: #44515b; background: #edf1f3; font-weight: 600; }
tr:last-child td { border-bottom: 0; }
.actions-column { min-width: 280px; }
.actions { display: flex; gap: 6px; white-space: nowrap; }
.actions button, .actions a { min-height: 30px; padding: 5px 9px; font-size: 12px; }
.actions a { display: inline-flex; align-items: center; border: 1px solid #aab4bc; border-radius: 4px; color: #26323c; text-decoration: none; }
.status { display: inline-block; min-width: 64px; font-weight: 600; }
.status-ready { color: #167356; }
.status-failed { color: #b12d28; }
.status-processing, .status-uploaded { color: #a45d08; }
.error-message { max-width: 320px; margin-top: 3px; color: #a12622; font-size: 12px; white-space: normal; }
.empty-state { padding: 70px 20px; text-align: center; color: #6f7a82; }

dialog {
  width: min(1200px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  padding: 0;
  border: 1px solid #909ba3;
  border-radius: 6px;
  box-shadow: 0 18px 60px rgb(0 0 0 / 25%);
}
dialog::backdrop { background: rgb(20 25 28 / 55%); }
.dialog-heading { padding: 16px 18px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #dce1e5; }
.dialog-heading span { font-size: 12px; color: #68747d; }
.sentence-scroll { max-height: calc(100vh - 120px); overflow: auto; }
.sentence-scroll textarea { width: min(600px, 45vw); min-width: 260px; min-height: 58px; resize: vertical; padding: 7px; border: 1px solid #b8c0c7; border-radius: 3px; }
.sentence-scroll select { min-width: 90px; }
.boundary-control { display: inline-flex; align-items: center; gap: 4px; margin-left: 6px; white-space: nowrap; }
.boundary-control button { min-height: 24px; padding: 2px 6px; font-size: 11px; line-height: 1; }
.boundary-time { display: inline-block; min-width: 56px; text-align: center; font-variant-numeric: tabular-nums; }
.boundary-status { min-width: 26px; color: #a12622; font-size: 11px; }

@media (max-width: 820px) {
  .topbar { align-items: stretch; flex-direction: column; padding: 14px 16px; }
  .admin-auth { flex-wrap: wrap; }
  .admin-auth input { flex: 1 1 150px; }
  section { padding: 20px 16px; }
  #upload-form { grid-template-columns: 1fr; }
  .actions-column { min-width: 250px; }
}
