/*
  Base styles for the Sound Operations Dashboard

  This stylesheet defines a custom dark colour palette using CSS variables and
  provides classes for layout, cards, tables, buttons and other UI components.
*/

/* Color variables */
:root {
  --bg-color: #0f172a;
  --card-color: #1e293b;
  --accent-color: #38bdf8;
  --text-color: #e2e8f0;
  --muted-color: #94a3b8;
  --border-color: #1e293b;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

/* Global resets */
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
}
a {
  color: var(--accent-color);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* Layout */
.app-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
}
.sidebar {
  width: 250px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background-color: var(--card-color);
  box-shadow: 0 2px 6px var(--shadow-color);
}
.sidebar-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent-color);
  padding: 1rem;
  margin: 0;
}
.nav-list {
  list-style: none;
  padding: 0 1rem;
  margin: 0;
  flex: 1;
}
.nav-item {
  padding: 0.5rem 0.75rem;
  margin-bottom: 0.25rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-color);
}
.nav-item:hover,
.nav-item.active {
  background-color: var(--bg-color);
  color: var(--accent-color);
}
.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--bg-color);
}
.user-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--muted-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--bg-color);
}
.user-name {
  margin: 0;
  font-weight: 600;
  font-size: 0.9rem;
}
.user-role {
  margin: 0;
  font-size: 0.7rem;
  color: var(--muted-color);
}
.logout-link {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted-color);
}
.logout-link:hover {
  color: var(--accent-color);
}

.main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 1rem;
  background-color: var(--card-color);
  box-shadow: 0 1px 4px var(--shadow-color);
}
.search-container {
  position: relative;
  flex: 1;
  max-width: 400px;
}
.search-input {
  width: 100%;
  padding: 0.5rem 2.5rem 0.5rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-color);
  color: var(--text-color);
}
.search-input::placeholder {
  color: var(--muted-color);
}
.search-icon {
  width: 1rem;
  height: 1rem;
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted-color);
}
.notification-btn {
  position: relative;
  background: none;
  border: none;
  color: var(--muted-color);
  cursor: pointer;
}
.notification-btn:hover {
  color: var(--accent-color);
}
.bell-icon {
  width: 1.25rem;
  height: 1.25rem;
}
.notification-dot {
  position: absolute;
  top: 0;
  right: 0;
  width: 0.5rem;
  height: 0.5rem;
  background-color: #ef4444;
  border-radius: 50%;
}
.header-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--muted-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-color);
  font-size: 0.8rem;
}

.content {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
}
.content h2 {
  margin-top: 0;
  font-size: 1.5rem;
  font-weight: 600;
}

/* Card styles */
.card {
  background-color: var(--card-color);
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 1px 4px var(--shadow-color);
}
.card-title {
  font-size: 0.9rem;
  color: var(--muted-color);
  margin: 0;
}
.card-value {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0.25rem 0 0;
}

/* Grid utilities */
.grid {
  display: grid;
  gap: 1rem;
}
.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}
.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Buttons and chips */
.filter-chip {
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--text-color);
  background-color: var(--card-color);
  cursor: pointer;
}
.filter-chip.active {
  background-color: var(--bg-color);
  color: var(--accent-color);
}
.filter-chip:hover {
  border-color: var(--accent-color);
}

/* Table styles */
.table-container {
  overflow-x: auto;
  border-radius: 8px;
  box-shadow: 0 1px 4px var(--shadow-color);
}
table {
  width: 100%;
  border-collapse: collapse;
}
thead {
  background-color: var(--card-color);
}
th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.85rem;
}
th {
  color: var(--muted-color);
  text-transform: uppercase;
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
}
tbody tr {
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s ease;
}
tbody tr:hover {
  background-color: var(--bg-color);
}
tbody td {
  color: var(--text-color);
}

/* Announcement card */
.announcement-card {
  background-color: var(--card-color);
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 1px 4px var(--shadow-color);
}
.announcement-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.announcement-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}
.badge {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--bg-color);
}
.badge.low {
  background-color: #22c55e;
}
.badge.medium {
  background-color: #eab308;
}
.badge.high {
  background-color: #ef4444;
}
.announcement-content {
  font-size: 0.85rem;
  color: var(--muted-color);
  margin: 0.5rem 0 0;
}
.announcement-footer {
  font-size: 0.7rem;
  color: var(--muted-color);
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
}

/* Useful info sections */
.info-section {
  background-color: var(--card-color);
  border-radius: 8px;
  box-shadow: 0 1px 4px var(--shadow-color);
  margin-bottom: 1rem;
}
.info-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  cursor: pointer;
}
.info-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}
.info-content {
  padding: 0 1rem 1rem;
  font-size: 0.85rem;
  color: var(--muted-color);
}
/* Training cards */
.training-card {
  background-color: var(--card-color);
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 1px 4px var(--shadow-color);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.training-type {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background-color: var(--bg-color);
  color: var(--accent-color);
  font-size: 0.7rem;
  align-self: flex-start;
  margin-left: auto;
}
.training-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}
.training-description {
  font-size: 0.85rem;
  color: var(--muted-color);
  margin: 0.5rem 0;
}
.training-footer {
  font-size: 0.7rem;
  color: var(--muted-color);
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .sidebar {
    width: 200px;
  }
  .sidebar-title {
    font-size: 1.25rem;
  }
}