/**
 * EdgeVec Mobile Responsive Styles
 * Touch-optimized layouts and iOS Safari fixes
 * @version 0.6.0
 */

/* =============================================================================
   Base Mobile Resets
   ============================================================================= */

/* Prevent iOS text size adjust */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* Smooth scrolling with momentum on iOS */
html,
body {
  -webkit-overflow-scrolling: touch;
  overflow-scrolling: touch;
}

/* Prevent pull-to-refresh on Chrome Android */
body {
  overscroll-behavior-y: none;
}

/* Fix for iOS Safari 100vh issue */
.full-height {
  height: 100vh;
  height: 100dvh; /* Dynamic viewport height */
}

/* =============================================================================
   Touch Target Optimization
   ============================================================================= */

/* Minimum touch target size: 44x44px (Apple HIG) / 48x48dp (Material) */
.touch-target {
  min-width: 44px;
  min-height: 44px;
  padding: 12px;
}

/* Increase tap area without changing visual size */
.tap-expand::before {
  content: '';
  position: absolute;
  top: -8px;
  right: -8px;
  bottom: -8px;
  left: -8px;
}

/* Disable tap highlight on buttons (we have custom effects) */
button,
a,
input,
select,
textarea,
.btn,
.filter-tag,
.radio,
.result-card {
  -webkit-tap-highlight-color: transparent;
  tap-highlight-color: transparent;
}

/* Touch-friendly form controls */
input[type="text"],
input[type="number"],
input[type="range"],
select,
textarea {
  font-size: 16px; /* Prevents iOS zoom on focus */
  touch-action: manipulation;
}

/* =============================================================================
   Mobile Breakpoint: 768px
   ============================================================================= */

@media screen and (max-width: 768px) {
  /* Typography scaling */
  :root {
    --font-size-base: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
  }

  /* Header mobile */
  .header {
    padding: var(--space-sm) var(--space-md);
  }

  .header__inner {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .header__logo {
    flex: 1;
  }

  .header__nav {
    display: none; /* Hide nav on mobile, could add hamburger menu */
  }

  .header__actions {
    gap: var(--space-sm);
  }

  /* Hero section */
  .hero {
    padding: var(--space-xl) var(--space-md);
  }

  .hero__title {
    font-size: var(--font-size-2xl);
    word-break: break-word;
  }

  .hero__subtitle {
    font-size: var(--font-size-sm);
  }

  /* Status bar stacking */
  .status-bar {
    flex-direction: column;
    gap: var(--space-xs);
    align-items: stretch;
  }

  .status-bar__item {
    justify-content: space-between;
    padding: var(--space-xs) var(--space-sm);
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .status-bar__item:last-child {
    border-bottom: none;
  }

  /* Layout: single column on mobile */
  .layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .sidebar {
    order: 2; /* Move controls below results on mobile */
  }

  .content {
    order: 1;
  }

  /* Terminal (control panel) */
  .terminal {
    max-height: none;
  }

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

  /* Control groups */
  .control-group {
    margin-bottom: var(--space-md);
  }

  /* Filter tags */
  .filter-tags {
    flex-wrap: wrap;
  }

  .filter-tag {
    flex: 0 0 auto;
    padding: var(--space-xs) var(--space-sm);
  }

  /* Search box */
  .search-box__input {
    font-size: 16px;
    padding: var(--space-md);
  }

  .search-box__btn {
    width: 48px;
    height: 48px;
  }

  /* Results grid */
  .results {
    gap: var(--space-md);
  }

  /* Grid layouts */
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  /* Metric cards */
  .metric-card {
    padding: var(--space-md);
  }

  .metric-card__value {
    font-size: var(--font-size-xl);
  }

  /* Memory stats */
  .memory-stats {
    flex-direction: column;
    gap: var(--space-md);
  }

  .memory-stats__item {
    flex-direction: row;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-color);
  }

  .memory-stats__item:last-child {
    border-bottom: none;
  }

  /* Footer */
  .footer {
    padding: var(--space-lg) var(--space-md);
  }

  .footer__inner {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  /* Sections */
  .section {
    padding: var(--space-xl) var(--space-md);
  }

  .section__title {
    font-size: var(--font-size-xl);
  }
}

/* =============================================================================
   Small Mobile Breakpoint: 480px
   ============================================================================= */

@media screen and (max-width: 480px) {
  /* Even smaller typography */
  :root {
    --font-size-base: 13px;
    --font-size-lg: 15px;
    --font-size-xl: 18px;
    --font-size-2xl: 22px;
  }

  /* Tighter spacing */
  .container {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  /* Header logo */
  .header__logo .glitch {
    font-size: 18px;
  }

  .header__version {
    font-size: 10px;
  }

  /* Hero */
  .hero {
    padding: var(--space-lg) var(--space-sm);
  }

  .hero__title {
    font-size: 20px;
    letter-spacing: 0.05em;
  }

  /* Buttons */
  .btn {
    width: 100%;
    justify-content: center;
    padding: var(--space-md);
  }

  .btn--small {
    width: auto;
    padding: var(--space-xs) var(--space-sm);
  }

  /* Radio group vertical layout */
  .radio-group {
    flex-direction: column;
    gap: var(--space-sm);
  }

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

  /* Result cards */
  .result-card {
    padding: var(--space-sm);
  }

  .result-card__header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
  }

  /* Memory gauge */
  .memory-gauge {
    max-width: 200px;
    margin: 0 auto;
  }

  /* Filter tags scroll */
  .filter-tags {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: var(--space-xs);
    -webkit-overflow-scrolling: touch;
  }

  .filter-tags::-webkit-scrollbar {
    height: 4px;
  }

  .filter-tags::-webkit-scrollbar-thumb {
    background: var(--neon-cyan);
    border-radius: 2px;
  }
}

/* =============================================================================
   Bottom Sheet Pattern (for mobile controls)
   ============================================================================= */

.bottom-sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-color);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: var(--z-modal);
  max-height: 80vh;
  max-height: 80dvh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.bottom-sheet--open {
  transform: translateY(0);
}

.bottom-sheet__handle {
  width: 40px;
  height: 4px;
  background: var(--text-muted);
  border-radius: 2px;
  margin: var(--space-sm) auto var(--space-md);
}

.bottom-sheet__content {
  padding: 0 var(--space-md) var(--space-lg);
}

/* Bottom sheet backdrop */
.bottom-sheet-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  z-index: calc(var(--z-modal) - 1);
}

.bottom-sheet-backdrop--visible {
  opacity: 1;
  visibility: visible;
}

/* =============================================================================
   iOS Safari Specific Fixes
   ============================================================================= */

/* Fix position:fixed with virtual keyboard */
@supports (-webkit-touch-callout: none) {
  .header {
    position: sticky;
    top: 0;
  }

  /* Fix for Safari flexbox gap bug */
  .status-bar {
    gap: 0;
  }

  .status-bar__item + .status-bar__item {
    margin-left: var(--space-md);
  }

  @media screen and (max-width: 768px) {
    .status-bar__item + .status-bar__item {
      margin-left: 0;
      margin-top: var(--space-xs);
    }
  }
}

/* Safe area insets for notched devices */
@supports (padding: env(safe-area-inset-bottom)) {
  .footer {
    padding-bottom: calc(var(--space-lg) + env(safe-area-inset-bottom));
  }

  .bottom-sheet {
    padding-bottom: env(safe-area-inset-bottom);
  }

  .toast-container {
    bottom: calc(var(--space-md) + env(safe-area-inset-bottom));
  }
}

/* =============================================================================
   Landscape Orientation
   ============================================================================= */

@media screen and (max-height: 500px) and (orientation: landscape) {
  /* Reduce vertical spacing in landscape */
  .hero {
    padding: var(--space-md);
  }

  .hero__title {
    font-size: var(--font-size-xl);
  }

  .section {
    padding: var(--space-lg) var(--space-md);
  }

  /* Side-by-side layout in landscape */
  .layout {
    grid-template-columns: 300px 1fr;
  }

  .sidebar {
    order: 1;
    max-height: calc(100vh - 120px);
    max-height: calc(100dvh - 120px);
    overflow-y: auto;
  }

  .content {
    order: 2;
  }

  /* Memory gauge smaller */
  .memory-gauge {
    max-width: 150px;
  }
}

/* =============================================================================
   Touch-specific Interactions
   ============================================================================= */

/* Active states for touch */
@media (hover: none) and (pointer: coarse) {
  .btn:active,
  .filter-tag:active,
  .result-card:active {
    transform: scale(0.98);
    opacity: 0.9;
  }

  /* Remove hover effects that don't work on touch */
  .btn:hover,
  .filter-tag:hover,
  .result-card:hover {
    transform: none;
    box-shadow: inherit;
  }

  /* Ensure focus states work */
  .btn:focus-visible,
  .filter-tag:focus-visible,
  .result-card:focus-visible {
    outline: 2px solid var(--neon-cyan);
    outline-offset: 2px;
  }
}

/* =============================================================================
   Reduced Data Mode
   ============================================================================= */

@media (prefers-reduced-data: reduce) {
  /* Disable background effects */
  .noise-overlay,
  .scanline-overlay {
    display: none;
  }

  /* Disable web fonts (use system fonts) */
  :root {
    --font-display: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: ui-monospace, 'SF Mono', Consolas, monospace;
  }
}

/* =============================================================================
   Print Styles (for completeness)
   ============================================================================= */

@media print {
  /* Hide interactive elements */
  .header__nav,
  .header__actions,
  .theme-toggle,
  .btn,
  .bottom-sheet,
  .toast-container,
  .noise-overlay,
  .scanline-overlay {
    display: none !important;
  }

  /* Reset colors for print */
  * {
    color: black !important;
    background: white !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  /* Show links */
  a[href]::after {
    content: ' (' attr(href) ')';
    font-size: 0.8em;
  }
}

/* =============================================================================
   Dark Mode Forced Colors (High Contrast)
   ============================================================================= */

@media (forced-colors: active) {
  .btn,
  .filter-tag,
  .result-card,
  .terminal {
    border: 2px solid CanvasText;
  }

  .neon-text,
  .glitch {
    color: CanvasText;
    text-shadow: none;
  }

  .gauge__progress {
    stroke: Highlight;
  }
}