:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --bg-color: #f8fafc;
  --surface: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --error-color: #ef4444;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --transition: all 0.2s ease-in-out;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

#app {
  width: 100%;
  min-height: 100vh;
}

/* Views */
.view {
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.view.active {
  display: block;
  opacity: 1;
}

/* --- Login View --- */
#login-view {
  display: none;
  min-height: 100vh;
  place-items: center;
  padding: 1rem;
}
#login-view.active {
  display: grid;
}

.login-card {
  background: var(--surface);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
  animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

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

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.form-group input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

button {
  width: 100%;
  padding: 0.75rem 1.5rem;
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: inherit;
}

button:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
}

button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  width: auto;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}
.btn-secondary:hover {
  background-color: #f1f5f9;
  color: var(--text-main);
}

.btn-icon {
  background: transparent;
  color: var(--text-muted);
  width: auto;
  padding: 0.5rem;
  border-radius: var(--radius-md);
}
.btn-icon:hover {
  background: var(--border-color);
  color: var(--text-main);
}

.error-message {
  color: var(--error-color);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  text-align: center;
  min-height: 20px;
}

/* Spinner Loader */
.loader {
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top: 2px solid white;
  width: 18px;
  height: 18px;
  animation: spin 1s linear infinite;
  display: inline-block;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.hidden {
  display: none !important;
}

/* --- Dashboard View --- */
.top-nav {
  background: var(--surface);
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
}

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

.nav-brand h2 {
  font-size: 1.25rem;
  font-weight: 600;
}

.badge {
  background: #e0e7ff;
  color: var(--primary);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.dashboard-content {
  padding: 2rem;
  max-width: 100%;
  margin: 0 auto;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  align-items: center;
}

.search-box input {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  width: 300px;
  font-family: inherit;
  outline: none;
}
.search-box input:focus {
  border-color: var(--primary);
}

.data-container {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

/* Table Styles */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background: #f8fafc;
  padding: 1rem 1.5rem;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

td {
  padding: 1rem 1.5rem;
  font-size: var(--data-font-size, 0.875rem);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  white-space: nowrap;
}

tbody tr {
  transition: var(--transition);
}

tbody tr:hover {
  background-color: #f1f5f9;
}

tbody tr:last-child td {
  border-bottom: none;
}

/* Skeleton Loader */
.skeleton-loader {
  padding: 1rem;
}

.skeleton-row {
  height: 48px;
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.empty-state {
  padding: 4rem 2rem;
  text-align: center;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .dashboard-content {
    padding: 1rem;
  }
  .toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }
  .search-box input {
    width: 100%;
  }
  .top-nav {
    padding: 1rem;
  }
}