/* ==========================================================================
   Alvin Lab — report lookup + certificate viewer
   ========================================================================== */

/* ---------- lookup page ---------- */
.vp {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  padding-block: clamp(40px, 6vw, 84px) clamp(56px, 8vw, 96px);
  background:
    radial-gradient(90% 70% at 50% -10%, rgba(0, 168, 240, 0.12), transparent 60%),
    var(--paper-2);
}
.vp::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(6, 23, 44, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(6, 23, 44, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(60% 50% at 50% 30%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(60% 50% at 50% 30%, #000, transparent 75%);
  pointer-events: none;
}
.vp__in {
  position: relative;
  max-width: 620px;
  margin-inline: auto;
  text-align: center;
}
.vp__icon {
  width: 54px;
  height: 54px;
  margin: 0 auto 22px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-2);
  color: var(--brand-600);
}
.vp__icon svg {
  width: 25px;
  height: 25px;
}
.vp h1 {
  margin-top: 14px;
}
.vp .lede {
  margin: 16px auto 0;
  max-width: 46ch;
}
.vp-card {
  margin-top: 32px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 30px);
  box-shadow: var(--sh-2);
  text-align: left;
}
.vp-form {
  display: flex;
  gap: 10px;
}
.vp-form .field {
  flex: 1;
}
.vp-form .btn {
  flex: none;
  height: 56px;
  padding-inline: 26px;
}
.vp-card .form-note {
  color: var(--muted-2);
}
.vp-help {
  margin-top: 26px;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: left;
  display: grid;
  gap: 10px;
}
.vp-help div {
  display: flex;
  gap: 9px;
  align-items: flex-start;
}
.vp-help svg {
  width: 15px;
  height: 15px;
  color: var(--brand-500);
  flex: none;
  margin-top: 3px;
}
.vp-foot {
  margin-top: 34px;
  font-size: 0.88rem;
  color: var(--muted);
}

/* ---------- report page ---------- */
.rep {
  min-height: 100vh;
  background: var(--paper-3);
  display: flex;
  flex-direction: column;
}
.rep-top {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.rep-top__in {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 64px;
}
.rep-top__logo img {
  height: 30px;
  width: auto;
}
.rep-top__label {
  font-size: 0.8rem;
  color: var(--muted-2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-left: 16px;
  border-left: 1px solid var(--line);
  margin-left: 4px;
}
.rep-top__actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}
.rep-main {
  flex: 1;
  padding-block: clamp(20px, 3.4vw, 40px) clamp(40px, 6vw, 72px);
}
.rep-shell {
  max-width: 940px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* summary card */
.sum {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--sh-2);
  overflow: hidden;
}
.sum__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--line-2);
  background: linear-gradient(180deg, #fbfdff, #fff);
}
.sum__mark {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex: none;
}
.sum__kicker {
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted-2);
  font-weight: 600;
}
.sum__no {
  font-family: var(--mono);
  font-size: 1.06rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.sum__badge {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #0a7a4a;
  background: #e9f9f0;
  border: 1px solid #c9ecda;
  padding: 5px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.sum__badge svg {
  width: 13px;
  height: 13px;
}
/* 用 flex 而不是 grid：缺少某一项时，同一行的其余格子会自动撑满，不留灰洞 */
.sum__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background: var(--line-2);
  margin: 0;
}
.sum__cell {
  background: #fff;
  padding: 16px 24px;
  flex: 1 1 30%;
  min-width: 170px;
}
.sum__cell dt {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
  font-weight: 600;
}
.sum__cell dd {
  margin: 5px 0 0;
  font-size: 0.95rem;
  color: var(--ink);
  font-weight: 500;
  line-height: 1.4;
  word-break: break-word;
}
.sum__cell--wide {
  flex: 1 1 100%;
}
.sum__cell dd.mono {
  font-family: var(--mono);
  letter-spacing: 0.02em;
}
.sum__note {
  padding: 16px 24px;
  border-top: 1px solid var(--line-2);
  background: #f8fbff;
  font-size: 0.9rem;
  color: var(--ink-2);
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.sum__note svg {
  width: 16px;
  height: 16px;
  color: var(--brand-500);
  flex: none;
  margin-top: 2px;
}
.sum__note--ok {
  background: #f4fbf6;
}
.sum__note--ok svg {
  color: #0a7a4a;
}

/* viewer */
.viewer {
  margin-top: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--sh-2);
}
.viewer__bar {
  position: sticky;
  top: 64px;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  border-radius: 18px 18px 0 0;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.viewer__bar::-webkit-scrollbar {
  display: none;
}
.vb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 36px;
  min-width: 36px;
  padding: 0 10px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  font-size: 0.82rem;
  font-weight: 500;
  transition: background-color 0.15s var(--ease), border-color 0.15s var(--ease), color 0.15s;
  flex: none;
}
.vb-btn:hover {
  background: var(--paper-3);
  border-color: #d5e3f1;
  color: var(--brand-700);
}
.vb-btn:disabled {
  opacity: 0.42;
  cursor: default;
}
.vb-btn svg {
  width: 16px;
  height: 16px;
}
.vb-btn--primary {
  background: var(--brand-500);
  border-color: var(--brand-500);
  color: #fff;
}
.vb-btn--primary:hover {
  background: #0073ce;
  border-color: #0073ce;
  color: #fff;
}
.vb-page {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  padding: 0 8px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.vb-page b {
  color: var(--ink);
  font-weight: 600;
}
.vb-sep {
  width: 1px;
  height: 20px;
  background: var(--line);
  margin: 0 4px;
  flex: none;
}
.vb-grow {
  flex: 1;
  min-width: 6px;
}
.viewer__stage {
  position: relative;
  background: #e9eef5;
  padding: 16px 8px 22px;
  min-height: 320px;
  border-radius: 0 0 18px 18px;
  overflow: hidden;
}
.viewer__pages {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  overflow-x: auto;
  scrollbar-width: thin;
}
.pdf-page {
  position: relative;
  background: #fff;
  box-shadow: 0 1px 3px rgba(6, 23, 44, 0.14), 0 12px 26px -18px rgba(6, 23, 44, 0.4);
  border-radius: 3px;
  overflow: hidden;
  flex: none;
}
.pdf-page canvas {
  display: block;
  width: 100%;
  height: auto;
}
.pdf-page__skel {
  display: grid;
  place-items: center;
  color: var(--muted-2);
  font-size: 0.8rem;
  min-height: 300px;
}
.pdf-page__num {
  position: absolute;
  right: 6px;
  bottom: 4px;
  font-family: var(--mono);
  font-size: 0.62rem;
  color: #8fa0b4;
  background: rgba(255, 255, 255, 0.86);
  padding: 1px 5px;
  border-radius: 4px;
  pointer-events: none;
}
.viewer__state {
  display: grid;
  place-items: center;
  gap: 14px;
  padding: 54px 22px;
  text-align: center;
  color: var(--muted);
}
.viewer__state svg {
  width: 30px;
  height: 30px;
  color: var(--brand-400);
}
.viewer__state .spin {
  animation: spin 0.9s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* not-found state */
.nf {
  max-width: 560px;
  margin: clamp(30px, 6vw, 70px) auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--sh-2);
  padding: clamp(26px, 4vw, 40px);
  text-align: center;
}
.nf__icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #fff4f4;
  color: #b0343c;
}
.nf__icon svg {
  width: 24px;
  height: 24px;
}
.nf h1 {
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}
.nf p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.6;
}
.nf .btn {
  margin-top: 22px;
}
.rep-foot {
  border-top: 1px solid var(--line);
  background: #fff;
  padding-block: 18px;
  font-size: 0.8rem;
  color: var(--muted-2);
}
.rep-foot__in {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}
.rep-foot a:hover {
  color: var(--brand-600);
}

/* ---------- responsive ---------- */
@media (max-width: 720px) {
  .vp-form {
    flex-direction: column;
  }
  .vp-form .btn {
    width: 100%;
  }
  .sum__cell {
    flex: 1 1 44%;
    min-width: 140px;
    padding: 13px 18px;
  }
  .sum__note {
    padding: 14px 18px;
  }
  .rep-top__in {
    height: 56px;
  }
  .rep-top__label {
    display: none;
  }
  .viewer__bar {
    top: 56px;
  }
  .viewer__stage {
    padding: 10px 0 16px;
  }
  .viewer__pages {
    gap: 10px;
    padding-inline: 0;
  }
  .pdf-page {
    border-radius: 0;
  }
  .rep-top__actions .vb-btn span {
    display: none;
  }
}
@media (max-width: 420px) {
  .sum__cell {
    flex: 1 1 100%;
  }
  .sum__head {
    padding: 16px 18px;
  }
}