/**
 * ConcreteInfo Mix Design Calculator - Main Stylesheet (app-specific rules)
 *
 * NOTE: This file no longer @imports the design system. Every standard
 * stylesheet (tokens, base, layouts, components, print) is linked directly via
 * <link> in includes/header.php so the browser fetches them in parallel and
 * each carries its own assetUrl() mtime cache-buster. main.css is linked LAST
 * among the design-system sheets so the app-specific overrides below (ci-tabs,
 * metric-card, ci-empty-state, dashboard header, base resets) win the cascade
 * over the generic components.
 *
 * @author Amit Haridas, ConcreteInfo
 */

/* ============================================================================
   6. APPLICATION-SPECIFIC OVERRIDES
   ============================================================================ */

/* Font Consistency - Apply system fonts everywhere */
html {
  font-size: 15px; /* CAMS2-parity root — rem utilities render at the 15px scale */
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Ensure all form elements use consistent fonts */
input, button, select, textarea {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
}

/* Modal form consistency */
.modal-body input[type="text"],
.modal-body input[type="email"],
.modal-body input[type="password"],
.modal-body input[type="number"],
.modal-body input[type="date"],
.modal-body input[type="tel"],
.modal-body input[type="url"],
.modal-body select,
.modal-body textarea {
  font-family: var(--font-family-sans) !important;
  font-size: var(--font-size-base) !important;
  height: 2.25rem !important;
  padding: 0.375rem 0.625rem !important;
  border-radius: var(--radius-md) !important;
}

.modal-body textarea {
  height: auto !important;
  min-height: 5rem !important;
}

/* Tailwind input fixes */
.form-input, .form-select, .form-textarea {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  height: 2.25rem;
}

/* Dashboard specific */
.dashboard-header {
  margin-bottom: var(--spacing-6);
}

.dashboard-header h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-1);
}

.dashboard-header p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
}

/* Tab navigation */
.ci-tabs {
  display: flex;
  gap: var(--spacing-1);
  background-color: var(--bg-tertiary);
  padding: var(--spacing-1);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  margin-bottom: 0;
  border-bottom: 2px solid var(--border-subtle);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.ci-tabs::-webkit-scrollbar { display: none; }

.ci-tabs .nav-link {
  padding: var(--spacing-2-5) var(--spacing-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
}

.ci-tabs .nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

.ci-tabs .nav-link.active {
  color: var(--color-brand);
  background-color: var(--bg-elevated);
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 2px 0 0 var(--color-brand), var(--shadow-sm);
}

.ci-tab-content {
  background-color: var(--bg-elevated);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  padding: var(--spacing-6);
  border: 1px solid var(--border-subtle);
  border-top: none;
}

/* Tab pane visibility */
.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: tabFadeIn 200ms ease-out forwards;
}

@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Quick actions grid */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--spacing-4);
}

/* Metric cards (small stats) */
.metric-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  background-color: var(--bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.metric-card:hover {
  border-color: var(--color-brand-200);
  box-shadow: var(--shadow-sm);
}

.metric-card__icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background-color: var(--color-brand-100);
  color: var(--color-brand);
  font-size: var(--font-size-base);
}

.metric-card__content {
  flex: 1;
}

.metric-card__value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.metric-card__label {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

/* Empty state */
.ci-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-12) var(--spacing-6);
  text-align: center;
}

.ci-empty-state__icon {
  width: 5rem;
  height: 5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background-color: var(--color-brand-100);
  color: var(--color-brand);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-4);
}

.ci-empty-state__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
}

.ci-empty-state__description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  max-width: 300px;
  margin-bottom: var(--spacing-5);
}

/* ============================================================================
   7. RESPONSIVE ADJUSTMENTS
   ============================================================================ */

/* Ensure proper touch targets on mobile */
@media (max-width: 767.98px) {
  .btn {
    min-height: 44px;
  }

  .form-control,
  .input {
    min-height: 44px;
  }

  .table td,
  .table th {
    padding: var(--spacing-3);
  }
}

/* ============================================================================
   8. DARK MODE SPECIFIC ADJUSTMENTS
   ============================================================================ */

.dark {
  /* Ensure proper contrast for dark mode */
  color-scheme: dark;
}

.dark img {
  opacity: 0.9;
}

.dark .card,
.dark .stat-card,
.dark .action-card,
.dark .card--elevated,
.dark .card--bordered {
  background-color: var(--color-gray-800, #1f2937);
  border-color: var(--color-gray-700, #374151);
}

/* Print styles are linked directly via <link media="print"> in header.php
   (print.css). An @import here would sit after style rules and be ignored by
   the browser per the CSS cascade spec. */

/* Logo on light backgrounds: logo is white-text+orange-icon for dark bg;
   invert+hue-rotate makes it dark-text+orange-icon for light/white surfaces */
.logo--light {
  filter: invert(1) hue-rotate(180deg);
}

/* Dark logo for light backgrounds (no filter - natural colors) */
.logo--dark {
    filter: none;
}