:root {
  color-scheme: light dark;
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  line-height: 1.4;
  padding: 0;
  margin: 0;
}

body {
  margin: 0;
  padding: 1.5rem;
  background: #f5f5f5;
  color: #222;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #111;
    color: #f5f5f5;
  }
}

header {
  max-width: 1200px;
  margin: 0 auto 2rem auto;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

section {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
  section {
    background: rgba(25, 25, 25, 0.9);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
  }
}

h1,
h2 {
  margin: 0 0 0.5rem 0;
}

.section-hint {
  margin-top: 0;
  color: #555;
  margin-bottom: 1rem;
}

@media (prefers-color-scheme: dark) {
  .section-hint {
    color: #aaa;
  }
}

button,
select {
  padding: 0.5rem 1rem;
  border-radius: 6px;
  border: 1px solid #333;
  background: #fff;
  cursor: pointer;
  font-size: 0.95rem;
}

button:hover {
  background: #ececec;
}

@media (prefers-color-scheme: dark) {
  button,
  select {
    background: #1f1f1f;
    border-color: #666;
    color: inherit;
  }

  button:hover {
    background: #2a2a2a;
  }
}

/* Overview stats grid */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.overview-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.05);
}

@media (prefers-color-scheme: dark) {
  .overview-item {
    background: rgba(255, 255, 255, 0.05);
  }
}

.overview-item .label {
  font-size: 0.9rem;
  color: #666;
}

.overview-item .value {
  font-size: 1.3rem;
  font-weight: 600;
  color: #0891b2;
}

@media (prefers-color-scheme: dark) {
  .overview-item .label {
    color: #aaa;
  }

  .overview-item .value {
    color: #22d3ee;
  }
}

/* Controls and filters */
.controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.filter-row {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.filter-row label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.filter-row select {
  min-width: 150px;
}

/* Message list */
.message-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.empty-state {
  padding: 2rem;
  text-align: center;
}

.loading-state {
  padding: 2rem;
  text-align: center;
}

.message-card {
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.message-card:hover {
  box-shadow: 0 4px 12px rgba(8, 145, 178, 0.15);
  transform: translateY(-2px);
}

@media (prefers-color-scheme: dark) {
  .message-card {
    background: rgba(20, 20, 20, 0.9);
    border-color: #333;
  }

  .message-card:hover {
    box-shadow: 0 4px 12px rgba(34, 211, 238, 0.15);
  }
}

.message-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Source badges */
.source-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.source-badge.slack {
  background: #e0f2fe;
  color: #0369a1;
}

.source-badge.gmail {
  background: #fef3c7;
  color: #b45309;
}

@media (prefers-color-scheme: dark) {
  .source-badge.slack {
    background: #0c4a6e;
    color: #bae6fd;
  }

  .source-badge.gmail {
    background: #78350f;
    color: #fde68a;
  }
}

.message-sender {
  font-weight: 600;
  color: #222;
  flex: 1;
  min-width: 100px;
}

@media (prefers-color-scheme: dark) {
  .message-sender {
    color: #f5f5f5;
  }
}

.message-timestamp {
  font-size: 0.85rem;
  color: #666;
}

@media (prefers-color-scheme: dark) {
  .message-timestamp {
    color: #aaa;
  }
}

.channel-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(8, 145, 178, 0.1);
  color: #0891b2;
}

@media (prefers-color-scheme: dark) {
  .channel-badge {
    background: rgba(34, 211, 238, 0.15);
    color: #22d3ee;
  }
}

.message-subject {
  font-weight: 600;
  font-size: 0.95rem;
  color: #333;
}

@media (prefers-color-scheme: dark) {
  .message-subject {
    color: #ddd;
  }
}

.message-preview {
  color: #444;
  font-size: 0.95rem;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

@media (prefers-color-scheme: dark) {
  .message-preview {
    color: #ccc;
  }
}

.message-footer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.permalink {
  color: #0891b2;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-weight: 500;
}

.permalink:hover {
  text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
  .permalink {
    color: #22d3ee;
  }
}

/* Messages (toast notifications) */
#messages {
  max-width: 1200px;
  margin: 1rem auto;
  min-height: 1.2rem;
  font-weight: 500;
}

#messages.success {
  color: #1a7f37;
}

#messages.error {
  color: #d93025;
}

@media (prefers-color-scheme: dark) {
  #messages.success {
    color: #62ff8e;
  }

  #messages.error {
    color: #ff6b6b;
  }
}

/* Loading state */
.loading {
  text-align: center;
  padding: 2rem;
  color: #666;
}

@media (prefers-color-scheme: dark) {
  .loading {
    color: #aaa;
  }
}

/* Breadcrumb navigation */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto 1rem auto;
  padding: 0.75rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.breadcrumb-link {
  color: #0891b2;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.breadcrumb-link:hover {
  color: #0e7490;
  text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
  .breadcrumb-link {
    color: #22d3ee;
  }

  .breadcrumb-link:hover {
    color: #0891b2;
  }
}

.breadcrumb-separator {
  color: #666;
  user-select: none;
}

@media (prefers-color-scheme: dark) {
  .breadcrumb-separator {
    color: #aaa;
  }
}

.breadcrumb-current {
  color: #666;
  font-weight: 500;
}

@media (prefers-color-scheme: dark) {
  .breadcrumb-current {
    color: #aaa;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .overview-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .filter-row label,
  .filter-row select {
    width: 100%;
  }
}