/* 表单用子集字体（仅含页面用字），从 ~40MB 降到几十 KB */
@font-face {
  font-family: "Songti SC";
  src: url("/fonts/SongtiSC-Regular.subset.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Songti SC";
  src: url("/fonts/SongtiSC-Bold.subset.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  /* 与 V1.png 纸色一致 */
  --paper: #ededdc;
  --ink: #5a4034;
  --ink-soft: #7a5a48;
  --muted: #9a7a58;
  --gold: #b08a4a;
  --gold-deep: #8c6a34;
  /* 表单强调色：偏暖褐金，避免大面积深红 */
  --accent: #9a6b4a;
  --accent-soft: #c4a07a;
  --accent-deep: #7d5538;
  --red: var(--accent);
  --red-deep: var(--accent-deep);
  --line: rgba(160, 120, 70, 0.28);
  --shadow: 0 18px 48px rgba(90, 48, 24, 0.14);
  --form-font: "Songti SC", serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--form-font);
  background:
    radial-gradient(ellipse at 50% -10%, #f7f5ea 0%, transparent 55%),
    linear-gradient(180deg, #ddd8c6 0%, #cfc8b4 100%);
}

button, input { font-family: inherit; }

.page {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 20px 10px 40px;
}

.sheet {
  width: min(430px, 100%);
  background: var(--paper);
  box-shadow: var(--shadow);
  padding: 0;
  overflow: hidden;
  line-height: 0;
}

.panel {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: top;
  background: var(--paper);
}

.mid {
  background: var(--paper);
  padding: 8px 28px 56px;
  line-height: normal;
  text-align: center;
  font-family: var(--form-font);
}

.mid button,
.mid input {
  font-family: var(--form-font);
}

.rsvp, .thanks {
  margin: 0;
  text-align: left;
}

.rsvp-title {
  margin: 0 0 26px;
  text-align: center;
  letter-spacing: 0.32em;
  text-indent: 0.32em;
  font-size: 16px;
  font-weight: 700;
  color: var(--gold-deep);
  position: relative;
  padding-bottom: 14px;
}

.rsvp-title::before,
.rsvp-title::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(176, 138, 74, 0.75), transparent);
}

.rsvp-title::before { right: calc(50% + 4.2em); }
.rsvp-title::after { left: calc(50% + 4.2em); }

.field {
  display: block;
  margin: 0 0 22px;
  border: 0;
  padding: 0;
}

.field span, .field legend {
  display: block;
  text-align: center;
  letter-spacing: 0.2em;
  text-indent: 0.1em;
  font-size: 13px;
  margin-bottom: 10px;
  padding: 0;
  color: var(--gold-deep);
}

input[type="text"], input[type="password"] {
  width: 100%;
  border: none;
  border-bottom: 1px solid rgba(176, 138, 74, 0.35);
  background: transparent;
  text-align: center;
  font-size: 17px;
  padding: 10px 8px 9px;
  color: var(--ink);
  outline: none;
  transition: border-color 0.25s ease, background 0.25s ease;
}

input[type="text"]::placeholder {
  color: rgba(154, 122, 88, 0.55);
  letter-spacing: 0.12em;
}

input:focus {
  border-bottom-color: var(--accent);
  background: linear-gradient(180deg, transparent 60%, rgba(154, 107, 74, 0.05));
}

.choices {
  display: flex;
  justify-content: center;
  gap: 14px;
}

.choice, .submit, .text-btn, .small-btn {
  cursor: pointer;
}

.choice {
  min-width: 124px;
  border: 1px solid rgba(154, 107, 74, 0.38);
  background: transparent;
  color: var(--ink-soft);
  border-radius: 2px;
  padding: 10px 16px;
  letter-spacing: 0.16em;
  text-indent: 0.08em;
  font-size: 14px;
  transition:
    background 0.25s ease,
    color 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.choice:hover {
  border-color: rgba(154, 107, 74, 0.75);
  color: var(--accent-deep);
  background: rgba(196, 160, 122, 0.12);
}

.choice.active {
  background: rgba(196, 160, 122, 0.22);
  border-color: var(--accent);
  color: var(--accent-deep);
  box-shadow: none;
}

.extra { margin-top: 2px; }

.hint {
  margin: 0 0 10px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.companion-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.companion-row input { flex: 1; }

.small-btn, .text-btn {
  border: none;
  background: transparent;
  color: var(--accent-deep);
  letter-spacing: 0.1em;
}

.small-btn {
  font-size: 13px;
  padding: 0 2px 6px;
  opacity: 0.85;
}

.small-btn:hover { opacity: 1; }

.delete-btn {
  color: #9a4a3a;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.text-btn {
  display: inline-block;
  margin: 8px auto 0;
  font-size: 13px;
  padding: 6px 4px;
  border-bottom: 1px solid rgba(154, 107, 74, 0.4);
  border-radius: 0;
}

.text-btn:hover {
  border-bottom-color: var(--accent-deep);
}

.submit {
  display: block;
  width: min(100%, 280px);
  margin: 28px auto 0;
  background: transparent;
  color: var(--accent-deep);
  border: 1px solid var(--accent);
  border-radius: 2px;
  letter-spacing: 0.28em;
  text-indent: 0.28em;
  padding: 13px 18px;
  font-size: 15px;
  font-weight: 700;
  box-shadow: none;
  transition:
    background 0.25s ease,
    color 0.25s ease,
    border-color 0.25s ease,
    transform 0.2s ease;
}

.submit:hover, .submit:focus-visible {
  background: rgba(196, 160, 122, 0.2);
  color: var(--accent-deep);
  border-color: var(--accent-deep);
  transform: translateY(-1px);
  box-shadow: none;
}

.submit:active {
  transform: translateY(0);
}

.submit:disabled {
  opacity: 0.55;
  cursor: wait;
  transform: none;
}

.error {
  color: #9a4a3a;
  text-align: center;
  margin: 10px 0 0;
  font-size: 13px;
  letter-spacing: 0.06em;
}

.thanks {
  text-align: center;
  padding: 18px 8px 10px;
}

.thanks h2 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin: 0;
  color: var(--gold-deep);
}

.thanks p {
  color: var(--muted);
  line-height: 1.9;
  letter-spacing: 0.06em;
  margin: 12px 0 0;
}

.admin-sheet {
  width: min(760px, 100%);
  text-align: left;
  padding: 28px 24px 36px;
  line-height: normal;
  background: var(--paper);
}

.admin-sheet h1 {
  text-align: center;
  font-size: 32px;
  color: var(--red-deep);
  letter-spacing: 0.18em;
  line-height: 1.4;
}

.login {
  max-width: 280px;
  margin: 28px auto 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 22px 0 18px;
}

.stat {
  border: 1px solid var(--line);
  padding: 12px 8px;
  text-align: center;
}

.stat b {
  display: block;
  font-size: 24px;
  font-weight: 500;
  color: var(--red-deep);
}

.stat span {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.5;
}

th, td {
  border-bottom: 1px solid var(--line);
  padding: 10px 6px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.08em;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  line-height: normal;
}

@media (max-width: 520px) {
  .mid { padding: 4px 18px 48px; }
  .admin-sheet { padding: 22px 16px 32px; }
  .stats { grid-template-columns: 1fr 1fr; }
}