:root {
  color-scheme: light dark;
  --font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --transition-fast: 0.18s ease;
}

body.theme-light {
  --color-bg: #f5f6fb;
  --color-surface: #ffffff;
  --color-surface-muted: #eef0f7;
  --color-text: #1d2433;
  --color-text-muted: #5f6b87;
  --color-border: rgba(23, 33, 53, 0.08);
  --color-accent: #2563eb;
  --color-accent-soft: rgba(37, 99, 235, 0.12);
  --color-danger: #e11d48;
  --shadow-soft: 0 12px 32px rgba(15, 23, 42, 0.08);
}

body.theme-dark {
  --color-bg: #0f172a;
  --color-surface: #17223b;
  --color-surface-muted: #111a2f;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-border: rgba(148, 163, 184, 0.18);
  --color-accent: #60a5fa;
  --color-accent-soft: rgba(96, 165, 250, 0.18);
  --color-danger: #fb7185;
  --shadow-soft: 0 16px 40px rgba(2, 6, 23, 0.35);
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  transition: background var(--transition-fast), color var(--transition-fast);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

.top-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(15, 23, 42, 0.04);
  border-bottom: 1px solid var(--color-border);
}

body.theme-dark .top-bar {
  background: rgba(15, 23, 42, 0.55);
}

.top-bar__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.01em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav__link {
  font-weight: 500;
  color: var(--color-text);
  opacity: 0.8;
}

.nav__link:hover,
.nav__link:focus-visible {
  opacity: 1;
}

.nav__user {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.theme-toggle {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  position: relative;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle::after {
  content: "";
  position: absolute;
  inset: 0.45rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-accent) 40%, transparent 120%);
  opacity: 0.8;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  transform: translateY(-1px);
  border-color: var(--color-accent);
}

.page {
  max-width: 1100px;
  margin: 2.5rem auto;
  padding: 0 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.panel {
  background: var(--color-surface);
  border-radius: 20px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
  padding: 2rem;
  transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.panel__header > h1,
.panel__header > h2 {
  margin: 0 0 0.5rem;
}

.panel__lead {
  margin-top: 0.25rem;
  color: var(--color-text-muted);
}

.hero {
  display: grid;
  gap: 1.75rem;
}

.hero__content {
  display: grid;
  gap: 0.9rem;
}

.hero__kicker {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  font-weight: 600;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero__status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero__hint {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.hero__highlights {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero__highlights li {
  display: flex;
  gap: 0.85rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: var(--color-surface-muted);
  align-items: flex-start;
}

.hero__icon {
  font-size: 1.5rem;
  line-height: 1;
}

.feature-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature-card {
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 1.5rem;
  background: var(--color-surface-muted);
  display: grid;
  gap: 0.65rem;
  min-height: 160px;
}

.feature-card h3 {
  margin: 0;
}

.feature-card p {
  margin: 0;
  color: var(--color-text-muted);
}

.info-panel {
  display: grid;
  gap: 1rem;
}

.info-panel h2 {
  margin: 0;
}

.info-steps {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.75rem;
}

.info-steps li {
  color: var(--color-text-muted);
  line-height: 1.6;
}

.info-steps strong {
  color: var(--color-text);
}

.upload-panel {
  display: grid;
  gap: 1.5rem;
}

.upload-form {
  display: grid;
  gap: 1.5rem;
}

.dropzone {
  position: relative;
  border: 2px dashed var(--color-border);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  background: var(--color-surface-muted);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.dropzone:hover,
.dropzone.dropzone--active {
  border-color: rgba(37, 99, 235, 0.45);
  background: var(--color-accent-soft);
}

.dropzone--disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.dropzone--disabled:hover {
  border-color: var(--color-border);
  background: var(--color-surface-muted);
}

.dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
}

.dropzone__content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  color: var(--color-text-muted);
}

.dropzone__content strong {
  font-size: 1.05rem;
  color: var(--color-text);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.form-field input,
.form-field select {
  padding: 0.75rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-field input:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.password-field {
  position: relative;
  display: flex;
}

.password-field input {
  flex: 1;
  padding-right: 3rem;
}

.password-toggle {
  position: absolute;
  right: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  border: none;
  background: var(--color-surface-muted);
  cursor: pointer;
}

.form-hint {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.upload-progress {
  margin-top: 0.5rem;
  background: var(--color-surface-muted);
  border-radius: 999px;
  border: 1px solid var(--color-border);
  position: relative;
  height: 0.9rem;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.upload-progress__bar {
  background: var(--color-accent);
  height: 100%;
  width: 0%;
  transition: width 0.1s linear;
}

.upload-progress__text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: var(--color-text);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.button.primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.25);
}

.button.primary:hover,
.button.primary:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 16px 28px rgba(37, 99, 235, 0.3);
}

.button.secondary {
  background: var(--color-surface-muted);
  color: var(--color-text);
}

.button[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

.button.ghost {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.flash {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.2rem;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.flash.success {
  border-color: rgba(34, 197, 94, 0.4);
  background: rgba(34, 197, 94, 0.15);
}

.flash.info {
  border-color: rgba(37, 99, 235, 0.35);
  background: rgba(37, 99, 235, 0.12);
}

.flash.error {
  border-color: rgba(225, 29, 72, 0.4);
  background: rgba(225, 29, 72, 0.15);
}

.flash__close {
  border: none;
  background: transparent;
  color: inherit;
  font-size: 1.25rem;
  cursor: pointer;
}

.highlight-panel {
  border-left: 4px solid var(--color-accent);
}

.copy-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.copy-row code {
  padding: 0.6rem 0.9rem;
  background: var(--color-surface-muted);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  font-size: 0.9rem;
  word-break: break-all;
}

.meta-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.35rem;
  color: var(--color-text-muted);
}

.feature-panel {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature {
  padding: 1.25rem;
  border-radius: 16px;
  background: var(--color-surface-muted);
  border: 1px dashed var(--color-border);
}

.file-panel {
  display: grid;
  gap: 1.25rem;
}

.file-list {
  display: grid;
  gap: 1rem;
}

.file-item {
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 1.25rem;
  background: var(--color-surface-muted);
}

.file-item__head {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.file-item__head h3 {
  margin: 0;
}

.file-item__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
}

.badge.muted {
  background: transparent;
  border: 1px dashed var(--color-border);
  color: var(--color-text-muted);
}

.badge.danger {
  background: rgba(225, 29, 72, 0.15);
  color: var(--color-danger);
}

.file-item__body {
  margin-top: 1rem;
  display: grid;
  gap: 0.75rem;
}

.file-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.5rem;
  margin: 0;
}

.file-meta div {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.auth-panel,
.download-panel {
  max-width: 420px;
  margin: 0 auto;
  text-align: left;
  display: grid;
  gap: 1rem;
}

.auth-form {
  display: grid;
  gap: 1rem;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.auth-link {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.site-footer {
  text-align: center;
  padding: 2rem 1.5rem 3rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.site-footer code {
  background: var(--color-surface-muted);
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

.password-form {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.flash.error {
  margin-bottom: 1rem;
}

@media (max-width: 720px) {
  .top-bar__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
  }

  .page {
    margin-top: 1.5rem;
    padding: 0 1.2rem 3rem;
  }

  .copy-row {
    flex-direction: column;
    align-items: stretch;
  }

  .copy-row code {
    width: 100%;
  }

  .form-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }
}

.admin-grid {
  display: grid;
  gap: 1.5rem;
}

.admin-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 1.5rem;
}

input[type="number"] {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
}

input[type="number"]:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.admin-overview {
  display: grid;
  gap: 1.5rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.stat-card {
  display: grid;
  gap: 0.35rem;
  padding: 1.1rem 1.25rem;
  border-radius: 16px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-muted);
}

.stat-card__label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.stat-card__value {
  font-size: 1.8rem;
  font-weight: 600;
}

.stat-card__hint {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.note {
  margin: 0.5rem 0 0;
  padding: 0.85rem 1.1rem;
  border-radius: 12px;
  font-size: 0.9rem;
}

.note--info {
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-text);
}

.settings-form {
  display: grid;
  gap: 1.5rem;
}

.settings-toggle {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-muted);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.settings-toggle:hover {
  border-color: var(--color-accent);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.12);
}

.settings-toggle input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.settings-toggle__text strong {
  display: block;
  font-size: 1rem;
}

.settings-toggle__text p {
  margin: 0.35rem 0 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.settings-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.form-field small {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.toggle,
.settings-toggle {
  position: relative;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}

.toggle input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.toggle__track {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
  border-radius: 999px;
  background: var(--color-border);
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

.toggle__track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: var(--color-surface);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.18);
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.settings-toggle input:checked + .toggle__track,
.toggle input:checked + .toggle__track {
  background: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.settings-toggle input:checked + .toggle__track::after,
.toggle input:checked + .toggle__track::after {
  transform: translateX(22px);
  background: #fff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.toggle__label {
  font-weight: 600;
  color: var(--color-text);
}

.invite-form {
  margin-top: 0.75rem;
}

.invite-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  align-items: end;
}

.invite-grid .form-actions {
  align-self: end;
}

.table-wrapper {
  margin-top: 1.75rem;
  display: grid;
  gap: 0.75rem;
}

.table-wrapper h3 {
  margin: 0;
  font-size: 1.05rem;
}

.table-empty {
  margin: 0;
  color: var(--color-text-muted);
  font-style: italic;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.admin-table th,
.admin-table td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.admin-table tr:last-child td {
  border-bottom: none;
}

.admin-table code {
  font-size: 0.85rem;
}

.token-snippet {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.55rem;
  border-radius: 10px;
  background: var(--color-surface-muted);
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.85rem;
  margin-right: 0.5rem;
}

.action-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.table-actions {
  text-align: right;
}

.table-actions form {
  display: inline-flex;
}

.user-cell {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.user-cell__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.checkbox-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

@media (max-width: 720px) {
  .admin-table {
    display: block;
    overflow-x: auto;
  }
}