:root {
  color-scheme: light;
  --blue: #25506b;
  --blue-deep: #16384d;
  --blue-soft: #e5eef3;
  --blue-pale: #f2f7fa;
  --red: #b8242f;
  --red-deep: #8f1d28;
  --gold: #c89b45;
  --ink: #142633;
  --muted: #617382;
  --line: #cfdae2;
  --paper: #f4f7f9;
  --panel: #fdfefe;
  --panel-soft: #f8fbfc;
  --disabled: #e9edf0;
  --glass-bg: rgba(253, 254, 254, 0.78);
  --elevate-y: -2px;
  --shadow-soft: 0 18px 42px rgba(22, 56, 77, 0.12);
  --shadow-seat: 0 5px 13px rgba(37, 80, 107, 0.13);
  --radius: 8px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 0%, rgba(37, 80, 107, 0.14), transparent 28rem),
    linear-gradient(180deg, rgba(37, 80, 107, 0.08), transparent 24rem),
    var(--paper);
}

button,
input { font: inherit; }

button,
.admin-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0 18px;
  color: #f7fbfd;
  background: var(--blue);
  box-shadow: 0 12px 22px rgba(37, 80, 107, 0.18);
  cursor: pointer;
  font-weight: 800;
  letter-spacing: 0;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 180ms var(--ease-out), box-shadow 180ms var(--ease-out), background 180ms var(--ease-out);
}

button:hover,
.admin-link:hover {
  transform: translateY(var(--elevate-y));
  background: var(--blue-deep);
  box-shadow: 0 16px 28px rgba(22, 56, 77, 0.22);
}

button:focus-visible,
.admin-link:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(37, 80, 107, 0.22);
  outline-offset: 2px;
}

.ghost-button,
.admin-link {
  border-color: var(--line);
  color: var(--blue);
  background: rgba(253, 254, 254, 0.9);
  box-shadow: none;
}

.ghost-button:hover,
.admin-link:hover {
  color: var(--blue-deep);
  background: var(--blue-soft);
  box-shadow: 0 10px 18px rgba(37, 80, 107, 0.08);
}

.button-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  background: center / contain no-repeat;
}

.icon-plus { background-image: url("/icons/plus.svg"); }
.icon-users { background-image: url("/icons/users.svg"); }
.icon-check { background-image: url("/icons/check.svg"); }
.icon-ticket { background-image: url("/icons/ticket.svg"); }
.icon-printer { background-image: url("/icons/printer.svg"); }
.icon-back { background-image: url("/icons/back.svg"); }
.icon-reset { background-image: url("/icons/reset.svg"); }
.icon-logout { background-image: url("/icons/logout.svg"); }
.icon-shield { background-image: url("/icons/shield.svg"); }
.icon-export { background-image: url("/icons/export.svg"); }

.icon-light {
  filter: brightness(0) invert(1);
}

.app-shell {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  padding: 22px 0 48px;
}

.topbar,
.seat-header,
.admin-actions,
.ticket-view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.brand-block {
  display: grid;
  grid-template-columns: minmax(280px, 470px) minmax(210px, 1fr);
  align-items: center;
  gap: var(--space-xl);
  min-width: 0;
}

.logo-lockup {
  display: grid;
  grid-template-columns: minmax(150px, 230px) minmax(160px, 240px);
  align-items: center;
  gap: var(--space-lg);
  min-width: 0;
}

.logo-lockup img {
  display: block;
  width: 100%;
  object-fit: contain;
  object-position: left center;
}

.lzu-logo { max-height: 54px; }
.college-logo { max-height: 50px; }

.kicker {
  margin: 0 0 6px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  color: var(--blue-deep);
  font-family: "Songti SC", "STSong", "PingFang SC", serif;
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1;
}

h2 {
  color: var(--blue-deep);
  font-size: 24px;
  line-height: 1.24;
}

.theme-banner,
.login-panel,
.seat-panel,
#adminDashboard,
.ticket-view {
  border: 1px solid rgba(207, 218, 226, 0.86);
  border-radius: var(--radius);
  background: var(--glass-bg);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
}

.theme-banner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding: var(--space-xl);
  overflow: hidden;
  position: relative;
}

.theme-banner::after {
  content: "";
  position: absolute;
  right: 24px;
  bottom: 18px;
  width: 170px;
  height: 52px;
  border-top: 8px solid rgba(37, 80, 107, 0.12);
  border-radius: 50%;
}

.theme-banner p {
  margin: 0 0 var(--space-sm);
  color: var(--gold);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.theme-banner h2 {
  font-size: clamp(28px, 4vw, 42px);
}

.theme-banner span {
  position: relative;
  z-index: 1;
  color: var(--muted);
  font-weight: 800;
}

.login-panel {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(320px, 520px);
  gap: var(--space-2xl);
  margin-top: 22px;
  padding: 28px;
}

.login-panel.compact {
  grid-template-columns: 1fr minmax(280px, 380px);
}

.login-copy p {
  max-width: 520px;
  margin: var(--space-md) 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.login-form,
.participant-fields {
  display: grid;
  gap: 14px;
}

.participant-row {
  display: grid;
  grid-template-columns: 1fr 1.12fr auto;
  gap: 10px;
  align-items: end;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(248, 251, 252, 0.92);
}

label {
  display: grid;
  gap: 7px;
  color: var(--blue-deep);
  font-weight: 900;
}

input {
  width: 100%;
  height: 46px;
  border: 1px solid #c6d4dc;
  border-radius: var(--radius);
  padding: 0 12px;
  color: var(--ink);
  background: #fdfefe;
  outline: none;
  transition: border-color 180ms var(--ease-out), box-shadow 180ms var(--ease-out), background 180ms var(--ease-out);
}

input:focus {
  border-color: var(--blue);
  background: #fbfdfe;
  box-shadow: 0 0 0 4px rgba(37, 80, 107, 0.13);
}

.hidden { display: none !important; }

.seat-panel,
#adminDashboard,
.ticket-view {
  margin-top: var(--space-xl);
  padding: 22px;
}

.seat-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

#finishButton {
  background: var(--red);
  box-shadow: 0 12px 22px rgba(184, 36, 47, 0.2);
}

#finishButton:hover { background: var(--red-deep); }

.welcome-message {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid rgba(200, 155, 69, 0.36);
  border-radius: var(--radius);
  color: var(--blue-deep);
  background: #fff8ea;
  font-weight: 900;
}

.assignment-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.assignment-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-soft);
}

.assignment-item strong { color: var(--red); }

.legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 24px;
  margin: 22px 0 18px;
  color: #5f707d;
  font-size: 15px;
  font-weight: 900;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

.dot {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 2px solid transparent;
  background: #fbfdfe;
}

.dot.sold { background: var(--blue); border-color: var(--blue); }
.dot.available { border-color: var(--blue); }
.dot.pending { border-color: var(--red); background: #fff0f1; }
.dot.unavailable { border-color: #d4dce1; background: var(--disabled); }

.seat-area {
  overflow-x: auto;
  padding: var(--space-sm) var(--space-sm) var(--space-xl);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(37, 80, 107, 0.05), transparent 180px),
    rgba(244, 247, 249, 0.72);
}

.seat-scroll {
  width: max-content;
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md) 0;
}

.screen-row {
  display: grid;
  grid-template-columns: 48px max-content;
  gap: 18px;
  margin-bottom: 18px;
}

.screen-spacer { width: 48px; }

.screen-wrap {
  display: grid;
  justify-items: center;
  gap: var(--space-sm);
  width: calc(25 * 44px + 24 * 12px);
  margin: 0;
}

.screen-arc {
  width: min(640px, 76%);
  height: 20px;
  border-radius: 50%;
  border-top: 8px solid #cfd6dc;
  filter: drop-shadow(0 8px 10px rgba(88, 100, 111, 0.22));
}

.stage {
  color: var(--blue);
  text-align: center;
  font-size: 18px;
  font-weight: 900;
}

.seat-grid-wrap {
  display: grid;
  grid-template-columns: 48px max-content;
  gap: 18px;
  justify-content: center;
}

.row-rail {
  display: grid;
  grid-template-rows: repeat(10, 44px);
  gap: 12px;
  align-self: start;
  border-radius: 999px;
  background: #c9d2d8;
}

.row-rail span {
  display: grid;
  place-items: center;
  color: #f7fbfd;
  font-size: 18px;
  font-weight: 900;
}

.seat-map {
  display: grid;
  grid-template-columns: repeat(25, 44px);
  grid-template-rows: repeat(10, 44px);
  gap: 12px;
}

.seat {
  display: grid;
  place-items: center;
  grid-template-rows: 1fr auto;
  width: 44px;
  min-width: 44px;
  height: 44px;
  min-height: 44px;
  border: 2px solid var(--blue);
  border-radius: 10px;
  padding: 0;
  color: transparent;
  background: #fbfdfe;
  box-shadow: var(--shadow-seat);
  transition: transform 150ms var(--ease-out), box-shadow 150ms var(--ease-out), border-color 150ms var(--ease-out), background 150ms var(--ease-out);
}

.seat:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 18px rgba(37, 80, 107, 0.18);
}

.seat-badge {
  width: 24px;
  height: 24px;
  background: center / contain no-repeat url("/badge-blue_160x160.png");
}

.seat-reserve-name {
  max-width: 42px;
  margin-top: -6px;
  overflow: hidden;
  color: #7b858d;
  font-size: 7px;
  font-weight: 900;
  line-height: 1;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.seat.occupied {
  border-color: var(--blue);
  background: var(--blue);
}

.seat.occupied .seat-badge {
  background-image: url("/badge-white_160x160.png");
}

.seat.mine,
.seat.pending {
  border-color: var(--red);
  background: var(--red);
}

.seat.mine .seat-badge,
.seat.pending .seat-badge {
  background-image: url("/badge-white_160x160.png");
}

.seat.teacher,
.seat.staff,
.seat.parent {
  border-color: #d5dde2;
  background: var(--disabled);
  box-shadow: none;
}

.seat.teacher .seat-badge,
.seat.staff .seat-badge,
.seat.parent .seat-badge {
  opacity: 0.22;
  filter: grayscale(1);
}

.seat-tooltip {
  width: fit-content;
  max-width: min(360px, 100%);
  margin: 0 auto 10px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 14px 32px rgba(34, 42, 52, 0.16);
  text-align: center;
}

.seat-tooltip strong {
  display: block;
  margin-bottom: 3px;
  color: var(--blue);
}

.seat-tooltip span {
  color: var(--muted);
  font-weight: 900;
}

.ticket-panel {
  display: grid;
  gap: var(--space-lg);
  margin: 18px 0 8px;
}

.ticket {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 132px;
  overflow: hidden;
  position: relative;
  border: 1px solid #c9d7df;
  border-radius: var(--radius);
  background:
    linear-gradient(90deg, transparent calc(100% - 132px), rgba(37, 80, 107, 0.08) calc(100% - 132px)),
    #fdfefe;
  box-shadow: 0 18px 36px rgba(37, 80, 107, 0.14);
}

.ticket::before,
.ticket::after {
  content: "";
  position: absolute;
  right: 120px;
  width: 18px;
  height: 18px;
  border: 1px solid #c9d7df;
  border-radius: 50%;
  background: var(--paper);
  transform: translateX(50%);
}

.ticket::before { top: -10px; }
.ticket::after { bottom: -10px; }

.ticket-main {
  padding: 22px;
  background-image: linear-gradient(135deg, rgba(37, 80, 107, 0.055), transparent 54%);
}

.ticket-kicker {
  margin: 0 0 var(--space-sm);
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.ticket h3 {
  color: var(--blue-deep);
  font-family: "Songti SC", "STSong", "PingFang SC", serif;
  font-size: 30px;
}

.ticket dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 18px;
  margin: 18px 0 0;
}

.ticket dl div { min-width: 0; }

.ticket dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.ticket dd {
  margin: 3px 0 0;
  color: var(--ink);
  font-weight: 900;
}

.ticket-stub {
  display: grid;
  place-items: center;
  align-content: center;
  gap: var(--space-md);
  border-left: 1px dashed #b8c7d0;
  color: #f7fbfd;
  background: var(--blue);
}

.ticket-stub span {
  writing-mode: vertical-rl;
  color: rgba(247, 251, 253, 0.72);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.ticket-stub strong { font-size: 18px; }

.error {
  min-height: 20px;
  margin: 0;
  color: #b8242f;
  font-weight: 800;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin: 0 0 var(--space-lg);
}

.stats div,
.admin-grid section {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.stats div { padding: 18px; }

.stats span {
  display: block;
  color: var(--blue);
  font-size: 30px;
  font-weight: 900;
}

.stats small { color: var(--muted); }

.admin-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.admin-grid section { min-width: 0; }

.admin-grid h2 {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--line);
  font-size: 18px;
}

.table-wrap {
  max-height: 58vh;
  overflow: auto;
}

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

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid #e8eef2;
  text-align: left;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  color: var(--blue-deep);
  background: #f4f8fa;
}

tr:hover td { background: #f8fbfc; }

@media (prefers-reduced-motion: no-preference) {
  .theme-banner,
  .login-panel,
  .seat-panel,
  .ticket-view,
  #adminDashboard {
    animation: panel-enter 520ms var(--ease-out) both;
  }

  .seat {
    animation: seat-pop 320ms var(--ease-out) both;
  }
}

@keyframes panel-enter {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes seat-pop {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 920px) {
  .topbar,
  .theme-banner,
  .seat-header,
  .admin-actions,
  .ticket-view-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand-block {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .logo-lockup {
    grid-template-columns: minmax(140px, 220px) minmax(140px, 230px);
    width: min(100%, 500px);
  }

  .login-panel,
  .login-panel.compact,
  .participant-row,
  .admin-grid,
  .stats {
    grid-template-columns: 1fr;
  }

  .seat-actions {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 620px) {
  .app-shell {
    width: min(100% - 18px, 1180px);
    padding-top: 14px;
  }

  .topbar {
    gap: var(--space-md);
  }

  .logo-lockup {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    width: min(100%, 320px);
  }

  .lzu-logo,
  .college-logo {
    max-height: 44px;
  }

  .theme-banner,
  .login-panel,
  .seat-panel,
  #adminDashboard,
  .ticket-view {
    padding: var(--space-lg);
  }

  .seat-area {
    padding-left: 0;
    padding-right: 0;
  }

  .screen-row,
  .seat-grid-wrap {
    grid-template-columns: 42px max-content;
  }

  .screen-spacer { width: 42px; }

  .screen-wrap {
    width: calc(25 * 38px + 24 * 10px);
  }

  .row-rail {
    grid-template-rows: repeat(10, 38px);
    gap: 10px;
  }

  .seat-map {
    grid-template-columns: repeat(25, 38px);
    grid-template-rows: repeat(10, 38px);
    gap: 10px;
  }

  .seat {
    width: 38px;
    min-width: 38px;
    height: 38px;
    min-height: 38px;
  }

  .seat-badge {
    width: 21px;
    height: 21px;
  }

  .seat-reserve-name {
    max-width: 36px;
    font-size: 6px;
  }

  .ticket {
    grid-template-columns: 1fr;
  }

  .ticket::before,
  .ticket::after {
    display: none;
  }

  .ticket-stub {
    min-height: 88px;
    border-top: 1px dashed #b8c7d0;
    border-left: 0;
  }

  .ticket-stub span {
    writing-mode: initial;
  }

  .ticket dl {
    grid-template-columns: 1fr;
  }
}

@media print {
  body { background: #fdfefe; }

  .topbar,
  .theme-banner,
  .login-panel,
  .seat-panel,
  .ticket-view-header .seat-actions,
  .admin-link {
    display: none !important;
  }

  .app-shell {
    width: 100%;
    padding: 0;
  }

  .ticket-view {
    margin: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  .ticket {
    break-inside: avoid;
    box-shadow: none;
  }
}