/* ==========================================================================
   NavRun Utility Classes
   ========================================================================== */

/* -------------------------------------------------------------------------
   Text Utilities
   ------------------------------------------------------------------------- */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-muted {
  color: var(--color-text-muted) !important;
}

.text-subtle {
  color: var(--color-text-subtle) !important;
}

.font-medium {
  font-weight: var(--font-medium) !important;
}

.font-semibold {
  font-weight: var(--font-semibold) !important;
}

.font-bold {
  font-weight: var(--font-bold) !important;
}

/* -------------------------------------------------------------------------
   Spacing Utilities
   ------------------------------------------------------------------------- */
.gap-xs { gap: var(--space-xs) !important; }
.gap-sm { gap: var(--space-sm) !important; }
.gap-md { gap: var(--space-md) !important; }
.gap-lg { gap: var(--space-lg) !important; }
.gap-xl { gap: var(--space-xl) !important; }

/* -------------------------------------------------------------------------
   Border Utilities
   ------------------------------------------------------------------------- */
.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

/* -------------------------------------------------------------------------
   Shadow Utilities
   ------------------------------------------------------------------------- */
.shadow-xs { box-shadow: var(--shadow-xs) !important; }
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }

/* -------------------------------------------------------------------------
   Background Utilities
   ------------------------------------------------------------------------- */
.bg-subtle { background-color: var(--color-bg-subtle) !important; }
.bg-surface { background-color: var(--color-surface) !important; }

/* -------------------------------------------------------------------------
   Run Type Colors
   ------------------------------------------------------------------------- */
.run-type-easy {
  border-left: 4px solid var(--color-easy);
  background: linear-gradient(90deg, rgba(34, 197, 94, 0.1) 0%, transparent 100%);
}
.run-type-long {
  border-left: 4px solid var(--color-long);
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.1) 0%, transparent 100%);
}
.run-type-tempo {
  border-left: 4px solid var(--color-tempo);
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.1) 0%, transparent 100%);
}
.run-type-interval {
  border-left: 4px solid var(--color-interval);
  background: linear-gradient(90deg, rgba(239, 68, 68, 0.1) 0%, transparent 100%);
}
.run-type-recovery {
  border-left: 4px solid var(--color-recovery);
  background: linear-gradient(90deg, rgba(139, 92, 246, 0.1) 0%, transparent 100%);
}
.run-type-rest {
  border-left: 4px solid var(--color-rest);
  background: linear-gradient(90deg, rgba(100, 116, 139, 0.1) 0%, transparent 100%);
}

/* -------------------------------------------------------------------------
   Accessibility
   ------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

*:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* -------------------------------------------------------------------------
   Reduced Motion Support
   ------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* -------------------------------------------------------------------------
   Responsive Utilities
   ------------------------------------------------------------------------- */
@media (max-width: 576px) {
  .hide-mobile { display: none !important; }
}

@media (min-width: 577px) and (max-width: 768px) {
  .hide-tablet { display: none !important; }
}

@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
}

/* -------------------------------------------------------------------------
   Mobile-First Responsive Enhancements
   ------------------------------------------------------------------------- */

/* Touch-friendly tap targets - minimum 44x44px */
@media (max-width: 768px) {
  .btn,
  .nav-link:not(.dropdown-toggle),
  .dropdown-item,
  .badge,
  a.card,
  button:not(.navbar-toggler) {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1rem;
  }

  .btn-sm,
  .btn-group-sm > .btn {
    min-height: 40px;
    padding: 0.625rem 0.875rem;
  }

  /* Larger form inputs for mobile */
  .form-control,
  .form-select {
    min-height: 44px;
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 0.75rem 1rem;
  }

  textarea.form-control {
    min-height: 88px; /* 2x tap target */
  }

  /* Touch-friendly checkboxes and radios */
  .form-check-input {
    width: 24px;
    height: 24px;
    margin-top: 0.125rem;
  }

  .form-check-label {
    padding-left: 0.5rem;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  /* Larger navbar toggle */
  .navbar-toggler {
    min-height: 44px;
    min-width: 44px;
    padding: 0.5rem;
  }

  /* Dropdown items */
  .dropdown-item {
    padding: 0.75rem 1rem;
    min-height: 44px;
  }
}

/* -------------------------------------------------------------------------
   Mobile Tables - Horizontal Scroll
   ------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
  }

  /* Add visual indicator for scrollable tables */
  .table-responsive::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 30px;
    background: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.05) 100%);
    pointer-events: none;
  }

  /* Ensure tables don't squish on mobile */
  .table {
    min-width: 600px;
  }

  .activity-list-table {
    min-width: 700px;
  }

  .splits-table {
    min-width: 500px;
  }

  /* Make table cells more readable on mobile */
  .table td,
  .table th {
    white-space: nowrap;
    padding: 0.75rem 0.5rem;
  }

  .table thead th {
    position: sticky;
    top: 0;
    background: var(--color-bg-subtle);
    z-index: 10;
    font-size: 0.7rem;
  }
}

/* -------------------------------------------------------------------------
   Mobile Card Stacking
   ------------------------------------------------------------------------- */
@media (max-width: 768px) {
  /* Force cards to stack on mobile */
  .row > .col,
  .row > [class*="col-"] {
    width: 100%;
    max-width: 100%;
  }

  /* Preserve 2-column layout for metric cards */
  .row.g-3 > .col-md-4,
  .row.g-3 > .col-sm-6 {
    flex: 0 0 100%;
    max-width: 100%;
  }

  /* Metric cards - stack on mobile */
  .metric-card {
    padding: 1rem !important;
    margin-bottom: var(--space-sm);
  }

  .metric-card .metric-value {
    font-size: 1.5rem !important;
  }

  .metric-card .metric-icon {
    width: 36px !important;
    height: 36px !important;
    font-size: 1.125rem !important;
  }

  .metric-card .metric-label {
    font-size: 0.7rem !important;
  }

  /* Activity hero - reduce padding */
  .activity-hero {
    padding: var(--space-xl) var(--space-md) !important;
  }

  .activity-hero-title {
    font-size: var(--text-xl) !important;
  }

  .hero-stat-value {
    font-size: var(--text-3xl) !important;
  }

  .hero-stat-label {
    font-size: var(--text-xs) !important;
  }

  /* Cards - reduce padding */
  .card-body {
    padding: var(--space-md);
  }

  .card-header {
    padding: var(--space-sm) var(--space-md);
  }
}

/* -------------------------------------------------------------------------
   Mobile Calendar Styles
   ------------------------------------------------------------------------- */
@media (max-width: 768px) {
  /* Calendar - horizontal scroll with fixed column width */
  .calendar-table {
    min-width: 700px;
  }

  .calendar-table th,
  .calendar-table td {
    min-width: 100px;
    padding: 0.5rem !important;
  }

  .calendar-day {
    min-height: 80px !important;
  }

  .calendar-run,
  .calendar-race {
    font-size: 0.7rem !important;
    padding: 0.25rem !important;
    margin-bottom: 0.25rem !important;
  }

  .weather-badge {
    font-size: 0.65rem !important;
    padding: 0.15rem 0.3rem !important;
  }
}

/* -------------------------------------------------------------------------
   Mobile Typography
   ------------------------------------------------------------------------- */
@media (max-width: 768px) {
  h1 {
    font-size: var(--text-2xl);
  }

  h2 {
    font-size: var(--text-xl);
  }

  h3 {
    font-size: var(--text-lg);
  }

  h4, h5, h6 {
    font-size: var(--text-base);
  }

  /* Reduce spacing on mobile */
  .container,
  .container-fluid {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .py-4 {
    padding-top: var(--space-md) !important;
    padding-bottom: var(--space-md) !important;
  }

  .mb-4 {
    margin-bottom: var(--space-md) !important;
  }

  .mb-5 {
    margin-bottom: var(--space-lg) !important;
  }
}

/* -------------------------------------------------------------------------
   Small Mobile Screens (< 480px)
   ------------------------------------------------------------------------- */
@media (max-width: 480px) {
  /* Very small screens - make stats 2-column grid */
  .row.g-3.mb-4 > .col {
    flex: 0 0 100%;
    max-width: 100%;
  }

  /* Reduce padding further on very small screens */
  .container,
  .container-fluid {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  .metric-card {
    padding: 0.75rem !important;
  }

  .metric-card .metric-value {
    font-size: 1.25rem !important;
  }

  .metric-card .metric-icon {
    width: 32px !important;
    height: 32px !important;
    font-size: 1rem !important;
  }

  .card-body {
    padding: var(--space-sm);
  }

  /* Smaller buttons on very small screens */
  .btn {
    padding: 0.625rem 0.875rem;
    font-size: var(--text-sm);
  }

  /* Hide decorative elements on very small screens */
  .activity-hero::before {
    display: none;
  }
}

/* -------------------------------------------------------------------------
   Mobile Navigation Enhancements
   ------------------------------------------------------------------------- */
@media (max-width: 991px) {
  .navbar-collapse {
    margin-top: var(--space-md);
  }

  .navbar-nav .nav-link {
    padding: 0.75rem 0 !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .navbar-nav .nav-link:last-child {
    border-bottom: none;
  }

  .dropdown-menu {
    border: none;
    box-shadow: none;
    background: rgba(30, 41, 59, 0.95);
    margin-left: var(--space-md);
  }

  .dropdown-item {
    padding: 0.75rem 1rem;
  }
}

/* -------------------------------------------------------------------------
   Mobile Alerts & Modals
   ------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .alert {
    padding: var(--space-md);
    font-size: var(--text-sm);
  }

  .modal-dialog {
    margin: var(--space-md);
  }

  .modal-body {
    padding: var(--space-md);
  }

  .modal-footer {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .modal-footer .btn {
    width: 100%;
    margin: 0;
  }
}

/* -------------------------------------------------------------------------
   Landscape Orientation Optimizations
   ------------------------------------------------------------------------- */
@media (max-height: 500px) and (orientation: landscape) {
  .navbar {
    min-height: 50px;
  }

  .navbar-brand {
    font-size: var(--text-base);
  }

  .modal-dialog {
    max-height: 90vh;
    overflow-y: auto;
  }
}

/* -------------------------------------------------------------------------
   High-DPI Display Optimizations
   ------------------------------------------------------------------------- */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .metric-icon,
  .weather-badge .emoji {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

/* -------------------------------------------------------------------------
   Safe Area Insets for Notched Devices
   ------------------------------------------------------------------------- */
@supports (padding: max(0px)) {
  .navbar,
  .container,
  .container-fluid {
    padding-left: max(var(--space-md), env(safe-area-inset-left));
    padding-right: max(var(--space-md), env(safe-area-inset-right));
  }

  footer {
    padding-bottom: max(var(--space-lg), env(safe-area-inset-bottom));
  }
}