/* ==========================================================================
   MAIN STYLESHEET - BOVINATEC CLOUD ADMIN
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-app);
  -webkit-font-smoothing: antialiased;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* --- Layout Architecture --- */
#app {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* --- Auth / Login Screen --- */
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  width: 100%;
  background: radial-gradient(circle at top left, #18181B, #0A0A0A);
  padding: var(--space-4);
  position: relative;
}

:root.light .auth-container,
:root[data-theme="light"] .auth-container,
body.light .auth-container {
  background: radial-gradient(circle at top left, hsl(222, 47%, 18%), hsl(222, 47%, 10%));
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-8);
  border: 1px solid var(--border-light);
  animation: fadeIn 0.3s ease-out;
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.auth-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  box-shadow: 0 8px 16px -4px rgba(37, 99, 235, 0.4);
}

.auth-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.auth-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

/* --- App Main Layout --- */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  color: var(--text-sidebar);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform var(--transition-normal);
  z-index: var(--z-sidebar);
}

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-5);
  gap: var(--space-3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-brand-icon {
  width: 34px;
  height: 34px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-base);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.sidebar-brand-text {
  display: flex;
  flex-direction: column;
}

.sidebar-brand-title {
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--text-inverse);
  letter-spacing: 0.02em;
}

.sidebar-brand-badge {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary-border);
  font-weight: 600;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-4) var(--space-3);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav-section-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-sidebar-muted);
  padding: var(--space-3) var(--space-3) var(--space-1);
  font-weight: 600;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text-sidebar);
  font-weight: 500;
  font-size: var(--text-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
}

.nav-item:hover {
  background-color: var(--bg-sidebar-hover);
  color: var(--text-inverse);
  text-decoration: none;
}

.nav-item.active {
  background-color: var(--primary);
  color: var(--text-inverse);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.15);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  overflow: hidden;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: hsl(217, 33%, 25%);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--text-xs);
  flex-shrink: 0;
}

.user-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.user-name {
  font-weight: 600;
  font-size: var(--text-xs);
  color: var(--text-inverse);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.user-role-chip {
  font-size: 10px;
  color: var(--success);
  font-weight: 600;
}

.btn-logout {
  padding: var(--space-2);
  border-radius: var(--radius-md);
  color: var(--text-sidebar-muted);
  transition: all var(--transition-fast);
}

.btn-logout:hover {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

/* --- Main Viewport --- */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.topbar {
  height: var(--header-height);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  flex-shrink: 0;
  z-index: var(--z-header);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.topbar-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  background: var(--success-light);
  color: var(--success);
  border: 1px solid var(--success-border);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  display: inline-block;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.status-pill.warning {
  background: var(--warning-light);
  color: var(--warning);
  border-color: var(--warning-border);
}

.status-pill.danger {
  background: var(--danger-light);
  color: var(--danger);
  border-color: var(--danger-border);
}

.content-container {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-6);
}

/* --- Typography & Headings --- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.page-title-group h1 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.page-title-group p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  margin-top: 2px;
}

/* --- Cards & Containers --- */
.card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
}

/* --- KPI Stats Grid --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: var(--space-5);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-content {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.stat-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin: var(--space-1) 0;
  font-family: var(--font-mono);
  letter-spacing: -0.03em;
}

.stat-help {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon.primary { background: var(--primary-light); color: var(--primary); }
.stat-icon.success { background: var(--success-light); color: var(--success); }
.stat-icon.warning { background: var(--warning-light); color: var(--warning); }
.stat-icon.info { background: var(--info-light); color: var(--info); }

/* --- Tables --- */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--text-sm);
}

.data-table th {
  background: var(--bg-surface-raised);
  padding: var(--space-3) var(--space-4);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-medium);
  white-space: nowrap;
}

.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  vertical-align: middle;
}

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

.data-table tbody tr:hover {
  background-color: var(--bg-surface-hover);
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* --- Badges & Chips --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
}

.badge-success { background: var(--success-light); color: var(--success); border: 1px solid var(--success-border); }
.badge-warning { background: var(--warning-light); color: var(--warning); border: 1px solid var(--warning-border); }
.badge-danger { background: var(--danger-light); color: var(--danger); border: 1px solid var(--danger-border); }
.badge-info { background: var(--info-light); color: var(--info); border: 1px solid var(--info-border); }
.badge-neutral { background: var(--bg-surface-raised); color: var(--text-secondary); border: 1px solid var(--border-light); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

/* --- Form Controls & Buttons --- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: var(--space-4);
}

.form-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-primary);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: var(--text-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}
.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
  box-shadow: 0 4px 8px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--bg-surface-raised);
}

.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-danger:hover:not(:disabled) {
  background: hsl(350, 89%, 48%);
}

.btn-sm {
  padding: 4px 10px;
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.btn-icon:hover {
  background: var(--bg-surface-raised);
  color: var(--text-primary);
}

.btn-icon.danger:hover {
  background: var(--danger-light);
  color: var(--danger);
}

/* --- Search & Filters Bar --- */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.search-box {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 0 var(--space-3);
  width: 100%;
  max-width: 320px;
}

.search-box input {
  border: none;
  background: none;
  padding: 8px 0;
  outline: none;
  width: 100%;
  font-size: var(--text-sm);
}

.search-box svg {
  color: var(--text-muted);
  flex-shrink: 0;
}

/* --- Native Modals (<dialog>) --- */
dialog {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  background: var(--bg-surface);
  padding: 0;
  max-width: 580px;
  width: 90vw;
  margin: auto;
}

dialog::backdrop {
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease-out;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border-light);
}

.modal-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-6);
  max-height: 75vh;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-light);
  background: var(--bg-surface-raised);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* --- Toast Notification System --- */
#toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 280px;
  max-width: 400px;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--primary);
  animation: slideInRight 0.25s ease-out;
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* --- Empty States & Loaders --- */
.empty-state {
  text-align: center;
  padding: var(--space-10) var(--space-4);
  color: var(--text-secondary);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(37, 99, 235, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Responsive Breakpoints --- */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -100%;
    height: 100vh;
  }
  .sidebar.open {
    left: 0;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* --- Heartbeat & Monitor Animations --- */
#heartbeat-pulse {
  animation: heartbeatPulse 2.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes heartbeatPulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(0.85);
  }
}

/* --- Theme Toggle Styles --- */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  background: var(--bg-surface);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.theme-toggle-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.theme-toggle-btn svg {
  width: 18px;
  height: 18px;
}

:root.dark .auth-container,
:root[data-theme="dark"] .auth-container,
body.dark .auth-container {
  background: radial-gradient(circle at top left, #18181B, #09090B);
}