:root {
  --ink-950: #061018;
  --ink-900: #0a1722;
  --ink-850: #10212e;
  --ink-800: #172a38;
  --ink-700: #294354;
  --mist-100: #e9f7fa;
  --mist-300: #a9c5cc;
  --mist-500: #6d8a95;
  --signal: #22e3e0;
  --signal-strong: #42aef7;
  --warning: #ffcb6b;
  --danger: #ff6b70;
  --success: #67e8a9;
  --line: rgba(190, 232, 239, 0.16);
  --line-strong: rgba(78, 222, 226, 0.42);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  --radius-lg: 26px;
  --radius-md: 16px;
  --radius-sm: 10px;
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--mist-100);
  background: var(--ink-950);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--ink-950);
}

body {
  margin: 0;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(34, 227, 224, 0.32);
  outline-offset: 3px;
}

.portal-body {
  min-height: 100vh;
  color: var(--mist-100);
  background:
    radial-gradient(circle at 12% 8%, rgba(66, 174, 247, 0.2), transparent 28rem),
    radial-gradient(circle at 84% 80%, rgba(34, 227, 224, 0.12), transparent 32rem),
    linear-gradient(145deg, #061018 0%, #0a1722 52%, #07141d 100%);
}

.portal-body::before {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  content: "";
  opacity: 0.24;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 90%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--signal);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.login-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.8fr);
  width: min(1100px, calc(100% - 40px));
  min-height: 680px;
  margin: 0 auto;
  padding: 7vh 0;
  align-items: stretch;
}

.login-intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(40px, 7vw, 92px);
  border: 1px solid var(--line);
  border-right: 0;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  background: rgba(8, 26, 37, 0.54);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.login-intro h1 {
  max-width: 650px;
  margin: 0;
  color: #f1fdff;
  font-size: clamp(3.1rem, 7vw, 6.8rem);
  font-weight: 650;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.login-copy {
  max-width: 470px;
  margin: 32px 0 0;
  color: var(--mist-300);
  font-size: 1.04rem;
  line-height: 1.8;
}

.login-signal {
  display: flex;
  gap: 9px;
  margin-top: 70px;
}

.login-signal span {
  width: 38px;
  height: 4px;
  border-radius: 10px;
  background: var(--ink-700);
  animation: signal-wave 2.4s ease-in-out infinite;
}

.login-signal span:nth-child(2) { animation-delay: 0.14s; }
.login-signal span:nth-child(3) { animation-delay: 0.28s; }
.login-signal span:nth-child(4) { animation-delay: 0.42s; }

@keyframes signal-wave {
  0%, 65%, 100% { background: var(--ink-700); transform: scaleX(1); }
  20% { background: var(--signal); transform: scaleX(1.25); }
}

.login-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(34px, 5vw, 68px);
  border: 1px solid var(--line-strong);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  background: rgba(14, 34, 47, 0.92);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-index {
  position: absolute;
  top: -24px;
  right: -8px;
  color: rgba(34, 227, 224, 0.08);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 7rem;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.login-card-heading {
  position: relative;
  margin-bottom: 36px;
}

.login-card h2,
.panel h2,
.portal-dialog h2 {
  margin: 0;
  color: #f2fdff;
  font-size: 1.55rem;
  font-weight: 650;
  letter-spacing: -0.025em;
}

.login-card-heading > p:last-child,
.panel-heading p,
.portal-dialog p {
  margin: 9px 0 0;
  color: var(--mist-300);
  font-size: 0.92rem;
  line-height: 1.65;
}

.form-field {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}

.form-field > span {
  color: var(--mist-300);
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.06em;
}

.form-field input {
  width: 100%;
  min-height: 50px;
  padding: 0 15px;
  color: var(--mist-100);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(4, 15, 23, 0.72);
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.form-field input:hover {
  border-color: rgba(169, 197, 204, 0.34);
}

.form-field input:focus {
  border-color: var(--signal);
  background: rgba(4, 15, 23, 0.95);
  box-shadow: 0 0 0 4px rgba(34, 227, 224, 0.08);
}

.form-field small {
  color: var(--mist-500);
  font-size: 0.74rem;
  line-height: 1.5;
}

.form-message {
  min-height: 22px;
  margin: -5px 0 12px;
  color: var(--danger);
  font-size: 0.82rem;
}

.form-message.success {
  color: var(--success);
}

.primary-action,
.secondary-action,
.danger-action,
.quiet-action,
.text-action {
  cursor: pointer;
  border: 0;
  text-decoration: none;
}

.primary-action,
.secondary-action,
.danger-action {
  display: inline-flex;
  min-height: 50px;
  padding: 0 18px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.primary-action {
  width: 100%;
  color: #04151c;
  background: linear-gradient(110deg, var(--signal-strong), var(--signal));
  box-shadow: 0 15px 32px rgba(29, 203, 213, 0.2);
}

.secondary-action {
  width: 100%;
  color: var(--mist-100);
  border: 1px solid var(--line-strong);
  background: rgba(34, 227, 224, 0.08);
}

.danger-action {
  color: #26080a;
  background: var(--danger);
}

.primary-action:hover,
.secondary-action:hover,
.danger-action:hover {
  transform: translateY(-2px);
}

.primary-action:disabled,
.secondary-action:disabled,
.danger-action:disabled {
  cursor: wait;
  opacity: 0.55;
  transform: none;
}

.admin-header {
  position: relative;
  z-index: 2;
  display: flex;
  width: min(1180px, calc(100% - 40px));
  min-height: 82px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--mist-100);
  font-weight: 650;
  text-decoration: none;
}

.brand-code {
  display: grid;
  width: 46px;
  height: 30px;
  place-items: center;
  color: var(--ink-950);
  border-radius: 7px;
  background: var(--signal);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.text-action,
.quiet-action {
  display: inline-flex;
  min-height: 38px;
  padding: 0 13px;
  align-items: center;
  justify-content: center;
  color: var(--mist-300);
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
}

.text-action:hover,
.quiet-action:hover {
  color: var(--mist-100);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.035);
}

.admin-layout {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 64px 0 90px;
}

.admin-hero {
  display: grid;
  grid-template-columns: 1fr 170px;
  gap: 40px;
  margin-bottom: 40px;
  align-items: end;
}

.admin-hero h1 {
  margin: 0;
  color: #f2fdff;
  font-size: clamp(2.9rem, 7vw, 5.7rem);
  font-weight: 650;
  letter-spacing: -0.06em;
  line-height: 0.95;
}

.admin-hero > div > p:last-child {
  max-width: 610px;
  margin: 22px 0 0;
  color: var(--mist-300);
  line-height: 1.75;
}

.metric-card {
  padding: 22px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: rgba(20, 49, 64, 0.68);
}

.metric-card span,
.metric-card small {
  display: block;
  color: var(--mist-500);
  font-size: 0.76rem;
}

.metric-card strong {
  display: block;
  margin: 6px 0;
  color: var(--signal);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 2.65rem;
  line-height: 1;
}

.admin-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
  margin-bottom: 22px;
}

.panel {
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(12, 31, 43, 0.78);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(18px);
}

.panel-heading {
  display: flex;
  gap: 16px;
  margin-bottom: 30px;
  align-items: flex-start;
}

.panel-number {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  color: var(--signal);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
}

.stack-form {
  padding-left: 54px;
}

.user-list-heading {
  align-items: center;
}

.user-list-heading > div {
  flex: 1;
}

.table-wrap {
  overflow-x: auto;
}

.user-table {
  width: 100%;
  border-collapse: collapse;
  color: var(--mist-300);
  font-size: 0.88rem;
}

.user-table th {
  padding: 13px 14px;
  color: var(--mist-500);
  border-bottom: 1px solid var(--line);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-align: left;
}

.user-table td {
  padding: 17px 14px;
  border-bottom: 1px solid rgba(190, 232, 239, 0.08);
  vertical-align: middle;
}

.user-table tr:last-child td {
  border-bottom: 0;
}

.user-cell strong,
.file-cell strong {
  display: block;
  color: var(--mist-100);
  font-size: 0.9rem;
  font-weight: 650;
}

.user-cell small,
.file-cell small {
  display: block;
  margin-top: 4px;
  color: var(--mist-500);
}

.role-badge {
  display: inline-flex;
  margin-left: 7px;
  padding: 2px 7px;
  color: var(--warning);
  border: 1px solid rgba(255, 203, 107, 0.3);
  border-radius: 999px;
  font-size: 0.64rem;
  vertical-align: 1px;
}

.row-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.actions-column {
  text-align: right !important;
}

.row-action {
  min-height: 34px;
  padding: 0 10px;
  cursor: pointer;
  color: var(--mist-300);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.025);
}

.row-action:hover {
  color: var(--mist-100);
  border-color: var(--line-strong);
}

.row-action.danger {
  color: #ff9ca0;
}

.loading-cell,
.empty-cell {
  padding: 46px 14px !important;
  color: var(--mist-500);
  text-align: center;
}

.portal-dialog {
  width: min(460px, calc(100% - 30px));
  padding: 0;
  color: var(--mist-100);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--ink-850);
  box-shadow: var(--shadow);
}

.portal-dialog::backdrop {
  background: rgba(1, 8, 13, 0.76);
  backdrop-filter: blur(8px);
}

.dialog-card {
  position: relative;
  padding: 36px;
}

.dialog-card .form-field {
  margin-top: 26px;
}

.dialog-close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  width: 34px;
  height: 34px;
  cursor: pointer;
  place-items: center;
  color: var(--mist-300);
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  font-size: 1.25rem;
}

.dialog-actions {
  display: flex;
  margin-top: 24px;
  justify-content: flex-end;
  gap: 10px;
}

.portal-toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 20;
  max-width: min(400px, calc(100% - 44px));
  padding: 13px 16px;
  color: var(--mist-100);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: rgba(10, 30, 42, 0.96);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.portal-toast.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Authenticated toolbar added to the existing tools page. */
.portal-session-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  min-height: 58px;
  padding: 9px max(16px, calc((100vw - 760px) / 2));
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: var(--mist-100);
  border-bottom: 1px solid var(--line);
  background: rgba(6, 16, 24, 0.92);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(16px);
}

.session-identity {
  display: flex;
  align-items: center;
  gap: 10px;
}

.session-avatar {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--ink-950);
  border-radius: 10px;
  background: var(--signal);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 800;
}

.session-identity small,
.session-identity strong {
  display: block;
}

.session-identity small {
  color: var(--mist-500);
  font-size: 0.68rem;
}

.session-identity strong {
  margin-top: 2px;
  color: var(--mist-100);
  font-size: 0.86rem;
}

.session-actions {
  display: flex;
  gap: 7px;
}

.session-actions .text-action {
  min-height: 34px;
  padding-inline: 10px;
  font-size: 0.76rem;
}

.user-file-panel {
  position: relative;
  margin: 22px 0 34px;
  padding: 22px;
  color: var(--mist-100);
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background:
    linear-gradient(135deg, rgba(66, 174, 247, 0.13), transparent 55%),
    rgba(8, 24, 34, 0.92);
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

.user-file-panel::after {
  position: absolute;
  top: -20px;
  right: -16px;
  content: "XLSX";
  color: rgba(34, 227, 224, 0.07);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 4.5rem;
  font-weight: 800;
  pointer-events: none;
}

.file-panel-copy,
.file-panel-actions {
  position: relative;
  z-index: 1;
}

.file-panel-copy span {
  display: block;
  color: var(--signal);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.file-panel-copy strong {
  display: block;
  margin-top: 8px;
  overflow-wrap: anywhere;
  color: var(--mist-100);
  font-size: 1rem;
}

.file-panel-copy p {
  margin: 7px 0 0;
  color: var(--mist-500);
  font-size: 0.75rem;
  line-height: 1.55;
}

.file-panel-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 18px;
}

.file-control {
  display: inline-flex;
  min-height: 42px;
  padding: 0 12px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--mist-100);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: rgba(34, 227, 224, 0.07);
  font-size: 0.78rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.file-control.primary {
  color: var(--ink-950);
  border-color: transparent;
  background: linear-gradient(110deg, var(--signal-strong), var(--signal));
}

.file-status {
  min-height: 20px;
  margin: 10px 0 0;
  color: var(--mist-500);
  font-size: 0.72rem;
}

.file-status.error {
  color: var(--danger);
}

.file-status.success {
  color: var(--success);
}

.portal-password-dialog {
  width: min(430px, calc(100% - 30px));
}

.content > a,
.download-section > a {
  width: 100%;
  margin: 10px auto;
}

@media (max-width: 780px) {
  .login-shell {
    grid-template-columns: 1fr;
    width: min(560px, calc(100% - 24px));
    padding: 18px 0;
  }

  .login-intro {
    min-height: 300px;
    padding: 38px 28px;
    border-right: 1px solid var(--line);
    border-bottom: 0;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }

  .login-intro h1 {
    font-size: clamp(2.9rem, 14vw, 4.5rem);
  }

  .login-copy {
    margin-top: 22px;
  }

  .login-signal {
    margin-top: 34px;
  }

  .login-card {
    padding: 38px 28px;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  }

  .admin-header,
  .admin-layout {
    width: min(100% - 24px, 640px);
  }

  .admin-layout {
    padding-top: 44px;
  }

  .admin-hero,
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .metric-card {
    width: 160px;
  }

  .stack-form {
    padding-left: 0;
  }

  .panel {
    padding: 24px 18px;
  }

  .user-list-heading {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .user-table thead {
    display: none;
  }

  .user-table,
  .user-table tbody,
  .user-table tr,
  .user-table td {
    display: block;
    width: 100%;
  }

  .user-table tr {
    margin-bottom: 12px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.025);
  }

  .user-table td {
    padding: 7px 4px;
    border: 0;
  }

  .row-actions {
    margin-top: 8px;
    justify-content: flex-start;
  }

  .portal-session-bar {
    position: relative;
    padding: 10px 12px;
    align-items: flex-start;
  }

  .session-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}