:root {
  --color-primary: #0b1f3a;
  --color-secondary: #2f6fed;
  --color-background: #f5f7fb;
  --color-panel: #ffffff;
  --color-border: #cbd5f0;
  --color-text: #2c3e50;
  --color-text-muted: #5f6b81;
  --shadow-elevated: 0 20px 45px rgba(15, 32, 62, 0.1);
  --spacing: 1rem;
  --radius: 12px;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

[data-theme="dark"] {
  --color-background: #0b1324;
  --color-panel: #151f36;
  --color-border: #263657;
  --color-text: #e8f0ff;
  --color-text-muted: #97a7c7;
  --shadow-elevated: 0 20px 45px rgba(5, 12, 28, 0.45);
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
}

.hidden {
  display: none !important;
}

a {
  color: var(--color-secondary);
}

header {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing) * 0.75);
  padding: calc(var(--spacing) * 1.5);
  background: var(--color-panel);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-elevated);
}

header h1 {
  margin: 0;
}

.portal {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: calc(var(--spacing) * 2);
}

.login-panel {
  background: var(--color-panel);
  padding: calc(var(--spacing) * 2);
  border-radius: var(--radius);
  box-shadow: var(--shadow-elevated);
  width: min(420px, 100%);
}

.login-panel h1 {
  margin-top: 0;
  font-size: 1.8rem;
}

label {
  display: block;
  margin-bottom: var(--spacing);
}

label span {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 600;
}

input,
select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 1rem;
  background: var(--color-panel);
  color: var(--color-text);
}

button {
  width: 100%;
  padding: 0.85rem;
  background: var(--color-secondary);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 1rem;
  cursor: pointer;
}

#login-feedback {
  margin-top: var(--spacing);
  font-size: 0.95rem;
  min-height: 1.5rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
}

.toolbar .locale-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toolbar .locale-switcher label {
  font-weight: 600;
}

.toolbar button[data-theme-toggle] {
  width: auto;
  padding: 0.6rem 1rem;
  font-size: 0.95rem;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: background 0.2s ease;
}

[data-theme="dark"] .toolbar button[data-theme-toggle] {
  background: rgba(255, 255, 255, 0.05);
}

.module-shell {
  padding: calc(var(--spacing) * 2);
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing) * 1.5);
}

.notification-panel {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--spacing) * 1.5);
  box-shadow: var(--shadow-elevated);
}

.notification-panel h2 {
  margin: 0 0 0.75rem 0;
}

.notification-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.notification-panel .notification-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.75rem;
  border-radius: var(--radius);
  background: rgba(47, 111, 237, 0.08);
  border: 1px solid transparent;
  transition: border-color 0.2s ease;
}

[data-theme="dark"] .notification-panel .notification-item {
  background: rgba(47, 111, 237, 0.12);
}

.notification-panel .notification-item:hover {
  border-color: rgba(47, 111, 237, 0.4);
}

.notification-panel .notification-header {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
}

.notification-panel .notification-summary {
  font-weight: 600;
}

.notification-panel time {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.notification-panel ul li.empty,
.notification-panel ul li.error {
  padding: 0.75rem;
  border-radius: var(--radius);
  border: 1px dashed var(--color-border);
  text-align: center;
  color: var(--color-text-muted);
}

.notification-panel ul li.error {
  border-color: rgba(230, 126, 34, 0.6);
  color: #e67e22;
}

.announcements-panel {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--spacing) * 1.5);
  box-shadow: var(--shadow-elevated);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.announcements-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.announcements-header h2 {
  margin: 0;
}

.announcements-header button {
  border: none;
  background: var(--color-secondary);
  color: #fff;
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.announcements-header button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 16px rgba(47, 111, 237, 0.15);
}

.announcements-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.announcement-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  background: var(--color-panel);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.announcement-item.is-active {
  border-color: rgba(47, 111, 237, 0.45);
  box-shadow: 0 12px 24px rgba(47, 111, 237, 0.12);
}

.announcement-item.is-upcoming {
  border-style: dashed;
  opacity: 0.95;
}

.announcement-item.is-read {
  opacity: 0.85;
}

.announcement-item:hover {
  border-color: rgba(47, 111, 237, 0.6);
}

.announcement-title {
  font-weight: 700;
  margin: 0 0 0.35rem;
}

.announcement-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.announcement-message {
  margin: 0;
  line-height: 1.6;
}

.announcements-list li.empty,
.announcements-list li.error,
.announcements-list li.hint {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 0.85rem;
  text-align: center;
  color: var(--color-text-muted);
}

.announcements-list li.error {
  border-color: rgba(230, 126, 34, 0.6);
  color: #e67e22;
}

.analytics-panel {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--spacing) * 1.5);
  box-shadow: var(--shadow-elevated);
}

.analytics-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.analytics-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.analytics-controls select {
  width: auto;
  min-width: 120px;
}

.analytics-controls button {
  width: auto;
  padding: 0.6rem 1rem;
}

.analytics-window {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

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

.data-export-panel {
  margin-top: var(--spacing);
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--spacing) * 1.5);
  box-shadow: var(--shadow-elevated);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.data-export-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.data-export-status {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.data-export-status.loading {
  color: #2f6fed;
}

.data-export-status.success {
  color: #27ae60;
}

.data-export-status.error {
  color: #e74c3c;
}

.export-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.export-field label {
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.export-field select {
  min-height: 140px;
  padding: 0.6rem;
}

.export-help {
  margin: 0.4rem 0 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.export-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.export-download {
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  text-decoration: none;
  background: rgba(47, 111, 237, 0.12);
  color: var(--color-secondary);
  transition: background 0.2s ease, color 0.2s ease;
}

.export-download:hover {
  background: rgba(47, 111, 237, 0.22);
}

.analytics-card {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

[data-theme="dark"] .analytics-card {
  background: rgba(21, 31, 54, 0.65);
}

.analytics-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 28px rgba(15, 32, 62, 0.12);
}

.analytics-card h3 {
  margin: 0;
  font-size: 1.05rem;
}

.analytics-card dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto auto;
  gap: 0.35rem 0.75rem;
  font-size: 0.95rem;
}

.analytics-card dt {
  color: var(--color-text-muted);
}

.analytics-card dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
}

.analytics-placeholder {
  margin: 0;
  color: var(--color-text-muted);
}

.analytics-error {
  margin: 0;
  color: #b42323;
  font-weight: 600;
}

.search-panel {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--spacing) * 1.5);
  box-shadow: var(--shadow-elevated);
  display: flex;
  flex-direction: column;
  gap: var(--spacing);
}

.search-panel-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.search-summary {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  display: none;
}

.search-panel form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.search-panel input[type="search"] {
  flex: 1;
  min-width: 220px;
}

.search-panel button[type="submit"] {
  width: auto;
  padding: 0.75rem 1.25rem;
}

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

.search-results {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.search-results .empty,
.search-results .hint,
.search-results .error,
.search-results .loading {
  padding: 0.85rem 1rem;
  border-radius: calc(var(--radius) - 4px);
  border: 1px dashed var(--color-border);
  text-align: center;
  color: var(--color-text-muted);
}

.search-results .error {
  border-color: rgba(230, 126, 34, 0.6);
  color: #e67e22;
}

.search-result {
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) - 2px);
  padding: 0.85rem 1rem;
  background: var(--color-panel);
}

[data-theme="dark"] .search-result {
  background: rgba(21, 31, 54, 0.85);
  border-color: rgba(255, 255, 255, 0.06);
}

.search-result-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

.search-result-primary {
  font-weight: 600;
  margin-top: 0.35rem;
}

.search-result-secondary {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-top: 0.15rem;
}

.search-result-meta {
  list-style: none;
  margin: 0.6rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.search-result-meta li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.search-result-meta li strong {
  font-weight: 600;
  color: var(--color-text);
}

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

.card {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--spacing) * 1.5);
  box-shadow: var(--shadow-elevated);
}

.card h2 {
  margin-top: 0;
  margin-bottom: 0.35rem;
}

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