/*
 * LoseSize Nutrition Tools - Modern Clean CSS
 * Version: 1.0.0
 * MyFitnessPal-inspired minimal design with FDA-style nutrition facts
 */

/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */
:root {
  /* Brand Colors */
  --ls-primary: #2E7D32;
  --ls-primary-light: #4CAF50;
  --ls-primary-dark: #1B5E20;
  --ls-accent: #1976D2;
  --ls-accent-light: #42A5F5;

  /* %DV Bar Colors */
  --ls-dv-low: #4CAF50;
  --ls-dv-moderate: #FF9800;
  --ls-dv-high: #EF5350;

  /* Neutrals */
  --ls-bg: #F5F7FA;
  --ls-white: #FFFFFF;
  --ls-text: #212121;
  --ls-text-secondary: #757575;
  --ls-text-muted: #9E9E9E;
  --ls-border: #E0E0E0;
  --ls-border-light: #EEEEEE;
  --ls-divider: #F0F0F0;

  /* Shadows */
  --ls-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --ls-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --ls-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --ls-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.12);

  /* Typography */
  --ls-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, sans-serif;
  --ls-font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

  /* Spacing */
  --ls-radius: 12px;
  --ls-radius-sm: 8px;
  --ls-radius-xs: 6px;
  --ls-radius-pill: 50px;

  /* Transitions */
  --ls-transition: 0.2s ease;
  --ls-transition-slow: 0.3s ease;
}

/* ==========================================================================
   Base / Container
   ========================================================================== */
.losesize-wrapper {
  font-family: var(--ls-font);
  color: var(--ls-text);
  background: var(--ls-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 16px;
}

.losesize-wrapper *,
.losesize-wrapper *::before,
.losesize-wrapper *::after {
  box-sizing: border-box;
}

/* ==========================================================================
   Search Form
   ========================================================================== */
.losesize-search {
  max-width: 600px;
  margin: 0 auto 32px;
}

.losesize-search-form {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--ls-white);
  border-radius: var(--ls-radius-pill);
  box-shadow: var(--ls-shadow);
  overflow: hidden;
  transition: box-shadow var(--ls-transition);
}

.losesize-search-form:focus-within {
  box-shadow: var(--ls-shadow-md);
}

.losesize-search-icon {
  position: absolute;
  left: 18px;
  width: 20px;
  height: 20px;
  color: var(--ls-text-muted);
  pointer-events: none;
  flex-shrink: 0;
}

.losesize-search-input {
  flex: 1;
  border: none;
  outline: none;
  padding: 14px 16px 14px 50px;
  font-family: var(--ls-font);
  font-size: 16px;
  color: var(--ls-text);
  background: transparent;
  min-width: 0;
}

.losesize-search-input::placeholder {
  color: var(--ls-text-muted);
}

.losesize-search-btn {
  background: var(--ls-primary);
  color: var(--ls-white);
  border: none;
  padding: 14px 24px;
  font-family: var(--ls-font);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--ls-transition);
  white-space: nowrap;
}

.losesize-search-btn:hover {
  background: var(--ls-primary-dark);
}

.losesize-search-btn:active {
  transform: scale(0.98);
}

/* ==========================================================================
   Results Grid
   ========================================================================== */
.losesize-results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

@media (min-width: 768px) {
  .losesize-results-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==========================================================================
   Popular Foods Grid
   ========================================================================== */
.losesize-popular-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

@media (min-width: 600px) {
  .losesize-popular-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .losesize-popular-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Popular food item (small card) */
.losesize-popular-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--ls-white);
  border-radius: var(--ls-radius);
  padding: 14px 16px;
  box-shadow: var(--ls-shadow-sm);
  cursor: pointer;
  transition: box-shadow var(--ls-transition), transform var(--ls-transition);
  text-decoration: none;
  color: var(--ls-text);
  border: 1px solid var(--ls-border-light);
}

.losesize-popular-item:hover {
  box-shadow: var(--ls-shadow);
  transform: translateY(-2px);
}

.losesize-popular-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--ls-radius-sm);
  background: var(--ls-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.losesize-popular-name {
  font-weight: 600;
  font-size: 14px;
  line-height: 1.3;
}

.losesize-popular-cal {
  font-size: 13px;
  color: var(--ls-text-secondary);
  margin-top: 2px;
}

/* ==========================================================================
   Nutrition Card
   ========================================================================== */
.losesize-card {
  background: var(--ls-white);
  border-radius: var(--ls-radius);
  box-shadow: var(--ls-shadow);
  overflow: hidden;
  transition: box-shadow var(--ls-transition-slow), transform var(--ls-transition-slow);
}

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

/* --- Card Header --- */
.losesize-card-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--ls-divider);
}

.losesize-food-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--ls-text);
  margin: 0 0 4px;
  line-height: 1.3;
}

.losesize-brand-name {
  font-size: 13px;
  color: var(--ls-text-muted);
  margin: 0 0 10px;
  font-weight: 400;
}

.losesize-serving-info {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.losesize-serving-size {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ls-text-secondary);
  background: var(--ls-bg);
  padding: 4px 10px;
  border-radius: var(--ls-radius-xs);
}

.losesize-serving-select {
  font-family: var(--ls-font);
  font-size: 13px;
  padding: 4px 8px;
  border: 1px solid var(--ls-border);
  border-radius: var(--ls-radius-xs);
  background: var(--ls-white);
  color: var(--ls-text);
  cursor: pointer;
  outline: none;
}

.losesize-serving-select:focus {
  border-color: var(--ls-accent);
}

/* --- Calorie Highlight --- */
.losesize-calorie-highlight {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--ls-bg);
  border-bottom: 1px solid var(--ls-divider);
}

.losesize-calorie-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--ls-primary);
  line-height: 1;
}

.losesize-calorie-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ls-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.losesize-calorie-extra {
  text-align: right;
}

.losesize-calorie-extra span {
  display: block;
  font-size: 12px;
  color: var(--ls-text-muted);
}

.losesize-calorie-extra strong {
  font-size: 14px;
  color: var(--ls-text-secondary);
}

/* ==========================================================================
   FDA-Style Nutrition Facts (Modernized)
   ========================================================================== */
.losesize-nutrition-facts {
  padding: 16px 20px;
}

.losesize-nf-title {
  font-size: 16px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--ls-text);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--ls-text);
  margin-bottom: 4px;
}

.losesize-nf-serving-row {
  font-size: 13px;
  color: var(--ls-text-secondary);
  padding: 4px 0;
}

.losesize-nf-serving-row strong {
  font-weight: 700;
}

.losesize-nf-divider-thick {
  border: none;
  border-top: 2px solid var(--ls-text);
  margin: 4px 0;
}

.losesize-nf-divider-medium {
  border: none;
  border-top: 1.5px solid var(--ls-text);
  margin: 4px 0;
}

.losesize-nf-divider-thin {
  border: none;
  border-top: 1px solid var(--ls-text);
  margin: 2px 0;
}

.losesize-nf-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 3px 0;
  font-size: 14px;
  line-height: 1.5;
}

.losesize-nf-row.losesize-nf-indent {
  padding-left: 16px;
}

.losesize-nf-row .losesize-nf-nutrient {
  font-weight: 400;
}

.losesize-nf-row .losesize-nf-nutrient strong {
  font-weight: 700;
}

.losesize-nf-row .losesize-nf-value {
  font-weight: 700;
  text-align: right;
  white-space: nowrap;
}

.losesize-nf-row.losesize-nf-total {
  border-bottom: 1px solid var(--ls-text);
  padding-bottom: 4px;
  margin-bottom: 4px;
}

.losesize-nf-dv-header {
  font-size: 13px;
  font-weight: 700;
  text-align: right;
  padding: 2px 0;
  color: var(--ls-text);
}

.losesize-nf-footnote {
  font-size: 11px;
  color: var(--ls-text-muted);
  padding-top: 8px;
  line-height: 1.5;
}

/* ==========================================================================
   Nutrient %DV Bars
   ========================================================================== */
.losesize-nutrient-bars {
  padding: 16px 20px;
  border-top: 1px solid var(--ls-divider);
}

.losesize-bars-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ls-text);
  margin: 0 0 12px;
}

.losesize-bar-item {
  margin-bottom: 12px;
}

.losesize-bar-item:last-child {
  margin-bottom: 0;
}

.losesize-bar-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 5px;
}

.losesize-bar-nutrient-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--ls-text);
}

.losesize-bar-value {
  font-size: 12px;
  font-weight: 600;
  color: var(--ls-text-secondary);
}

.losesize-bar-track {
  width: 100%;
  height: 8px;
  background: var(--ls-border-light);
  border-radius: 4px;
  overflow: hidden;
}

.losesize-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  min-width: 0;
}

/* %DV Color coding */
.losesize-bar-fill.losesize-dv-low {
  background: var(--ls-dv-low);
}

.losesize-bar-fill.losesize-dv-moderate {
  background: var(--ls-dv-moderate);
}

.losesize-bar-fill.losesize-dv-high {
  background: var(--ls-dv-high);
}

/* %DV badge */
.losesize-dv-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--ls-radius-xs);
  margin-left: 6px;
}

.losesize-dv-badge.losesize-dv-badge-low {
  background: rgba(76, 175, 80, 0.12);
  color: #388E3C;
}

.losesize-dv-badge.losesize-dv-badge-moderate {
  background: rgba(255, 152, 0, 0.12);
  color: #E65100;
}

.losesize-dv-badge.losesize-dv-badge-high {
  background: rgba(239, 83, 80, 0.12);
  color: #C62828;
}

/* ==========================================================================
   Macro Breakdown (Pie/Donut indicator)
   ========================================================================== */
.losesize-macro-bar {
  display: flex;
  height: 6px;
  border-radius: 3px;
  overflow: hidden;
  margin: 12px 0;
  background: var(--ls-border-light);
}

.losesize-macro-fat {
  background: #FF9800;
}

.losesize-macro-carbs {
  background: #1976D2;
}

.losesize-macro-protein {
  background: #2E7D32;
}

.losesize-macro-legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.losesize-macro-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--ls-text-secondary);
}

.losesize-macro-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ==========================================================================
   Share Buttons
   ========================================================================== */
.losesize-share-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  border-top: 1px solid var(--ls-divider);
  flex-wrap: wrap;
}

.losesize-share-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--ls-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-right: 4px;
}

.losesize-share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--ls-border);
  border-radius: var(--ls-radius-pill);
  background: var(--ls-white);
  color: var(--ls-text-secondary);
  font-family: var(--ls-font);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--ls-transition);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

.losesize-share-btn:hover {
  border-color: var(--ls-accent);
  color: var(--ls-accent);
  background: rgba(25, 118, 210, 0.04);
}

.losesize-share-btn:active {
  transform: scale(0.96);
}

.losesize-share-btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Brand-colored share buttons */
.losesize-share-btn.losesize-share-facebook:hover {
  border-color: #1877F2;
  color: #1877F2;
  background: rgba(24, 119, 242, 0.04);
}

.losesize-share-btn.losesize-share-twitter:hover {
  border-color: #000000;
  color: #000000;
  background: rgba(0, 0, 0, 0.04);
}

.losesize-share-btn.losesize-share-pinterest:hover {
  border-color: #E60023;
  color: #E60023;
  background: rgba(230, 0, 35, 0.04);
}

.losesize-share-btn.losesize-share-copy:hover {
  border-color: var(--ls-primary);
  color: var(--ls-primary);
  background: rgba(46, 125, 50, 0.04);
}

.losesize-share-btn.losesize-share-copied {
  border-color: var(--ls-primary);
  color: var(--ls-primary);
  background: rgba(46, 125, 50, 0.08);
}

/* ==========================================================================
   AdSense Placeholders
   ========================================================================== */
.losesize-ad-unit {
  background: var(--ls-bg);
  border: 1px dashed var(--ls-border);
  border-radius: var(--ls-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ls-text-muted);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 24px auto;
  min-height: 90px;
}

.losesize-ad-unit.losesize-ad-leaderboard {
  max-width: 728px;
  min-height: 90px;
  margin: 24px auto;
}

.losesize-ad-unit.losesize-ad-sidebar {
  max-width: 300px;
  min-height: 250px;
}

.losesize-ad-unit.losesize-ad-in-card {
  margin: 12px 20px;
  min-height: 60px;
  border-radius: var(--ls-radius-xs);
}

.losesize-ad-unit.losesize-ad-between-results {
  grid-column: 1 / -1;
}

/* ==========================================================================
   Section Headings
   ========================================================================== */
.losesize-section-heading {
  font-size: 22px;
  font-weight: 700;
  color: var(--ls-text);
  margin: 0 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ls-primary);
  display: inline-block;
}

.losesize-section-subheading {
  font-size: 14px;
  color: var(--ls-text-secondary);
  margin: -14px 0 20px;
}

/* ==========================================================================
   Loading / Empty States
   ========================================================================== */
.losesize-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 20px;
  color: var(--ls-text-muted);
  font-size: 14px;
  gap: 12px;
}

.losesize-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--ls-border-light);
  border-top-color: var(--ls-primary);
  border-radius: 50%;
  animation: losesize-spin 0.7s linear infinite;
}

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

.losesize-empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--ls-text-muted);
}

.losesize-empty-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
  opacity: 0.4;
}

.losesize-empty-state p {
  font-size: 15px;
  margin: 0;
}

/* ==========================================================================
   CTA Button
   ========================================================================== */
.losesize-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--ls-radius-pill);
  font-family: var(--ls-font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--ls-transition);
  text-decoration: none;
  border: none;
  line-height: 1.4;
}

.losesize-btn-primary {
  background: var(--ls-primary);
  color: var(--ls-white);
}

.losesize-btn-primary:hover {
  background: var(--ls-primary-dark);
}

.losesize-btn-accent {
  background: var(--ls-accent);
  color: var(--ls-white);
}

.losesize-btn-accent:hover {
  background: #1565C0;
}

.losesize-btn-outline {
  background: var(--ls-white);
  color: var(--ls-primary);
  border: 1.5px solid var(--ls-primary);
}

.losesize-btn-outline:hover {
  background: var(--ls-primary);
  color: var(--ls-white);
}

.losesize-btn:active {
  transform: scale(0.97);
}

/* ==========================================================================
   Tooltip
   ========================================================================== */
.losesize-tooltip {
  position: relative;
  cursor: help;
}

.losesize-tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) scale(0.95);
  background: var(--ls-text);
  color: var(--ls-white);
  padding: 6px 10px;
  border-radius: var(--ls-radius-xs);
  font-size: 12px;
  font-weight: 400;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--ls-transition), transform var(--ls-transition);
  z-index: 10;
}

.losesize-tooltip:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ==========================================================================
   Responsive Utilities
   ========================================================================== */

/* Mobile-first base already set above via grid-template-columns: 1fr */
/* Tablet+ (768px) — handled in each component above */

/* Large desktop (1200px+) */
@media (min-width: 1200px) {
  .losesize-wrapper {
    padding: 32px 24px;
  }
}

/* Small phone adjustments */
@media (max-width: 400px) {
  .losesize-food-name {
    font-size: 17px;
  }

  .losesize-calorie-number {
    font-size: 26px;
  }

  .losesize-search-btn {
    padding: 14px 16px;
    font-size: 14px;
  }

  .losesize-share-row {
    gap: 6px;
  }

  .losesize-share-btn {
    padding: 6px 10px;
    font-size: 12px;
  }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
  .losesize-share-row,
  .losesize-ad-unit,
  .losesize-search {
    display: none !important;
  }

  .losesize-card {
    box-shadow: none;
    break-inside: avoid;
    border: 1px solid #ccc;
  }

  .losesize-wrapper {
    background: white;
  }
}

/* ==========================================================================
   Dark Mode Support (respects OS preference)
   ========================================================================== */
@media (prefers-color-scheme: dark) {
  .losesize-wrapper.is-dark-mode,
  .losesize-wrapper.auto-dark {
    --ls-bg: #121212;
    --ls-white: #1E1E1E;
    --ls-text: #E0E0E0;
    --ls-text-secondary: #AAAAAA;
    --ls-text-muted: #777777;
    --ls-border: #333333;
    --ls-border-light: #2A2A2A;
    --ls-divider: #2C2C2C;
    --ls-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --ls-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --ls-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --ls-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.5);
  }
}

/* ==========================================================================
   Accessibility - Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  .losesize-bar-fill {
    transition: none;
  }

  .losesize-card {
    transition: none;
  }

  .losesize-spinner {
    animation-duration: 2s;
  }

  .losesize-share-btn,
  .losesize-popular-item,
  .losesize-search-form {
    transition: none;
  }
}

/* ==========================================================================
   Focus Styles (Accessibility)
   ========================================================================== */
.losesize-search-input:focus-visible,
.losesize-serving-select:focus-visible,
.losesize-btn:focus-visible,
.losesize-share-btn:focus-visible {
  outline: 2px solid var(--ls-accent);
  outline-offset: 2px;
}

.losesize-popular-item:focus-visible {
  outline: 2px solid var(--ls-accent);
  outline-offset: -2px;
  border-radius: var(--ls-radius);
}