/* ============================================
   Soccer Calorie Calculator - CSS
   Neobrutalism Design System
   ============================================ */

/* Global box-sizing */
.soccer-calorie-calculator-container,
.soccer-calorie-calculator-container *,
.soccer-calorie-calculator-container *::before,
.soccer-calorie-calculator-container *::after {
  box-sizing: border-box;
}

/* ============================================
   CSS Variables - Light Mode (Default)
   ============================================ */
.soccer-calorie-calculator-container {
  /* Background colors */
  --bg-primary: #f5f5f0;
  --bg-secondary: #fff;
  --bg-section: #fff;
  
  /* Borders */
  --border-color: #333;
  
  /* Text colors */
  --text-primary: #222;
  --text-secondary: #555;
  --text-light: #666;
  
  /* Brand colors */
  --color-accent: #3498db;
  --color-success: #27ae60;
  --color-warning: #f39c12;
  --color-danger: #e74c3c;
  --color-purple: #9b59b6;
  --color-teal: #1abc9c;
  
  /* Shadows (neobrutalism) */
  --shadow-sm: 2px 2px 0 rgba(0,0,0,0.1);
  --shadow-md: 4px 4px 0 rgba(0,0,0,0.15);
  --shadow-lg: 8px 8px 0 rgba(0,0,0,0.15);
  
  /* Border radius */
  --radius-container: 8px;
  --radius-section: 6px;
  --radius-button: 4px;
  --radius-input: 4px;
  
  /* Input focus */
  --input-focus-bg: #fffacd;
  
  /* Header title */
  --title-color: #2c3e50;
  --title-shadow: 2px 2px 0 rgba(255,255,255,0.5);
  
  /* Button hover background */
  --btn-hover-overlay: rgba(0,0,0,0.1);
  
  /* Copy button background */
  --copy-btn-bg: #fff;
  --copy-btn-hover-bg: #f0f0f0;
  
  /* Reference cards */
  --card-light-bg: #e8f8f5;
  --card-moderate-bg: #fef9e7;
  --card-intense-bg: #fdedec;
  --card-goalkeeper-bg: #ebf5fb;
}

/* ============================================
   CSS Variables - Dark Mode (Manual toggle)
   ============================================ */
.soccer-calorie-calculator-container.dark {
  /* Background colors */
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-section: #2d2d2d;
  
  /* Borders */
  --border-color: #e0e0e0;
  
  /* Text colors */
  --text-primary: #e8e8e8;
  --text-secondary: #b0b0b0;
  --text-light: #909090;
  
  /* Brand colors - brighter for dark background */
  --color-accent: #5dade2;
  --color-success: #52c77a;
  --color-warning: #f5b041;
  --color-danger: #ec7063;
  --color-purple: #af7ac5;
  --color-teal: #48d1cc;
  
  /* Shadows */
  --shadow-sm: 2px 2px 0 rgba(255,255,255,0.08);
  --shadow-md: 4px 4px 0 rgba(255,255,255,0.12);
  --shadow-lg: 8px 8px 0 rgba(255,255,255,0.12);
  
  /* Input focus */
  --input-focus-bg: #3a3a3a;
  
  /* Header title */
  --title-color: #7fb3d5;
  --title-shadow: 2px 2px 0 rgba(0,0,0,0.5);
  
  /* Button hover background */
  --btn-hover-overlay: rgba(255,255,255,0.1);
  
  /* Copy button background */
  --copy-btn-bg: #3a3a3a;
  --copy-btn-hover-bg: #4a4a4a;
  
  /* Reference cards - dark mode */
  --card-light-bg: #1e3a34;
  --card-moderate-bg: #3a3420;
  --card-intense-bg: #3a2525;
  --card-goalkeeper-bg: #1e2d3a;
}

/* ============================================
   System Dark Mode Auto Detection
   ============================================ */
@media (prefers-color-scheme: dark) {
  .soccer-calorie-calculator-container:not(.dark):not(.light) {
    /* Background colors */
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-section: #2d2d2d;
    
    /* Borders */
    --border-color: #e0e0e0;
    
    /* Text colors */
    --text-primary: #e8e8e8;
    --text-secondary: #b0b0b0;
    --text-light: #909090;
    
    /* Brand colors */
    --color-accent: #5dade2;
    --color-success: #52c77a;
    --color-warning: #f5b041;
    --color-danger: #ec7063;
    --color-purple: #af7ac5;
    --color-teal: #48d1cc;
    
    /* Shadows */
    --shadow-sm: 2px 2px 0 rgba(255,255,255,0.08);
    --shadow-md: 4px 4px 0 rgba(255,255,255,0.12);
    --shadow-lg: 8px 8px 0 rgba(255,255,255,0.12);
    
    /* Input focus */
    --input-focus-bg: #3a3a3a;
    
    /* Header title */
    --title-color: #7fb3d5;
    --title-shadow: 2px 2px 0 rgba(0,0,0,0.5);
    
    /* Button hover background */
    --btn-hover-overlay: rgba(255,255,255,0.1);
    
    /* Copy button background */
    --copy-btn-bg: #3a3a3a;
    --copy-btn-hover-bg: #4a4a4a;
    
    /* Reference cards - dark mode */
    --card-light-bg: #1e3a34;
    --card-moderate-bg: #3a3420;
    --card-intense-bg: #3a2525;
    --card-goalkeeper-bg: #1e2d3a;
  }
}

/* ============================================
   Main Container
   ============================================ */
.soccer-calorie-calculator-container {
  position: relative;
  max-width: 900px;
  width: 100%;
  margin: 8px auto;
  padding: 8px;
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-container);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Malgun Gothic', sans-serif;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  line-height: 1.5;
}

/* ============================================
   Dark Mode Toggle Button
   ============================================ */
.dark-mode-toggle {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 6px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
  font-size: 17.5px;
  font-weight: 600;
  color: var(--text-primary);
  z-index: 10;
}

.dark-mode-toggle:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.15);
}

.dark-mode-toggle:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* ============================================
   Header
   ============================================ */
.calculator-header {
  text-align: center;
  margin-bottom: 8px;
  padding: 8px;
}

.calculator-header .main-title {
  font-size: 30px;
  font-weight: 800;
  color: var(--title-color);
  text-shadow: var(--title-shadow);
  margin: 0 0 6px 0;
}

.calculator-header .subtitle {
  font-size: 15.5px;
  color: var(--text-secondary);
  margin: 0;
}

/* ============================================
   Main Grid Layout (2-column)
   ============================================ */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

/* ============================================
   Sections (Input/Result)
   ============================================ */
.input-section,
.result-section {
  background: var(--bg-section);
  padding: 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  box-shadow: var(--shadow-md);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-color);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.section-header svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-accent);
}

/* ============================================
   Input Fields
   ============================================ */
.input-group {
  margin-bottom: 8px;
}

.input-group label {
  display: block;
  margin-bottom: 4px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text-primary);
}

.input-group input,
.input-group select {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 16px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Malgun Gothic', sans-serif;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}

.input-group input[type="number"] {
  font-family: 'Courier New', monospace;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--input-focus-bg);
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.1);
}

.input-description {
  margin-top: 4px;
  font-size: 14px;
  color: var(--text-light);
}

/* ============================================
   Buttons
   ============================================ */
.calculate-btn {
  width: 100%;
  padding: 10px;
  margin-top: 8px;
  background: var(--color-accent);
  color: #fff;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-button);
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 4px 4px 0 rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.calculate-btn:hover {
  filter: brightness(1.05);
  transform: translate(1px, 1px);
  box-shadow: 3px 3px 0 rgba(0,0,0,0.2);
}

.calculate-btn:active {
  transform: translate(4px, 4px);
  box-shadow: none;
}

.calculate-btn svg {
  stroke: #fff;
}

.button-group {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

.sample-btn,
.reset-btn {
  flex: 1;
  padding: 6px 10px;
  font-size: 15.5px;
  font-weight: 600;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 2px 2px 0 rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.sample-btn {
  background: var(--color-success);
  color: #fff;
}

.reset-btn {
  background: var(--color-warning);
  color: #fff;
}

.sample-btn svg,
.reset-btn svg {
  stroke: #fff;
}

.sample-btn:hover,
.reset-btn:hover {
  filter: brightness(1.05);
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.2);
}

.sample-btn:active,
.reset-btn:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* ============================================
   Result Section
   ============================================ */
.result-content {
  min-height: 200px;
}

.result-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  color: var(--text-light);
  text-align: center;
}

.result-placeholder svg {
  stroke: var(--text-light);
  margin-bottom: 12px;
  opacity: 0.5;
}

.result-placeholder p {
  font-size: 15px;
  margin: 0;
  line-height: 1.6;
}

/* Result Display */
.result-display {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.result-main-card {
  background: var(--bg-secondary);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-section);
  padding: 12px;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.result-main-label {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.result-main-value {
  font-size: 34px;
  font-weight: 800;
  color: var(--color-accent);
  font-family: 'Courier New', monospace;
}

.result-main-unit {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-left: 4px;
}

.result-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.result-detail-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  padding: 8px;
  box-shadow: var(--shadow-sm);
}

.result-detail-label {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 2px;
}

.result-detail-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  font-family: 'Courier New', monospace;
}

.result-comparison {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  padding: 10px;
  margin-top: 6px;
}

.result-comparison-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.comparison-items {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.comparison-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  padding: 4px 0;
  border-bottom: 1px dashed var(--border-color);
}

.comparison-item:last-child {
  border-bottom: none;
}

.comparison-food {
  color: var(--text-primary);
}

.comparison-amount {
  font-weight: 600;
  color: var(--color-accent);
  font-family: 'Courier New', monospace;
}

/* ============================================
   Info Section (Calorie Reference)
   ============================================ */
.info-section {
  margin-top: 8px;
  background: var(--bg-section);
  padding: 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  box-shadow: var(--shadow-md);
}

.calorie-reference-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.reference-card {
  padding: 10px 8px;
  border-radius: var(--radius-section);
  text-align: center;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.reference-card.light-activity {
  background: var(--card-light-bg);
}

.reference-card.moderate-activity {
  background: var(--card-moderate-bg);
}

.reference-card.intense-activity {
  background: var(--card-intense-bg);
}

.reference-card.goalkeeper-activity {
  background: var(--card-goalkeeper-bg);
}

.reference-icon {
  font-size: 26px;
  margin-bottom: 4px;
}

.reference-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.reference-value {
  font-size: 16px;
  font-weight: 800;
  color: var(--color-accent);
  font-family: 'Courier New', monospace;
  margin-bottom: 4px;
}

.reference-desc {
  font-size: 12px;
  color: var(--text-light);
  line-height: 1.3;
}

/* ============================================
   Disclaimer Section
   ============================================ */
.disclaimer-section {
  margin-top: 8px;
  background: var(--bg-section);
  padding: 8px;
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-section);
  box-shadow: var(--shadow-sm);
}

.disclaimer-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-warning);
}

.disclaimer-header svg {
  stroke: var(--color-warning);
}

.disclaimer-list {
  margin: 0;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.disclaimer-list li {
  margin-bottom: 4px;
}

.disclaimer-list li:last-child {
  margin-bottom: 0;
}

.disclaimer-list strong {
  color: var(--text-primary);
}

/* ============================================
   Toast Notification
   ============================================ */
.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  padding: 10px 15px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s;
  z-index: 1000;
  max-width: 300px;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast svg {
  stroke: var(--color-success);
  flex-shrink: 0;
}

.toast-content {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.toast-title {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text-primary);
}

.toast-value {
  font-size: 14px;
  color: var(--text-secondary);
  font-family: 'Courier New', monospace;
  word-break: break-all;
}

/* ============================================
   Responsive - Tablet (768px or less)
   ============================================ */
@media (max-width: 768px) {
  .soccer-calorie-calculator-container {
    margin: 6px 5px;
    padding: 7px;
    width: calc(100% - 10px);
  }
  
  .main-grid {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  
  .calculator-header .main-title {
    font-size: 26px;
  }
  
  .section-header {
    font-size: 17px;
  }
  
  .dark-mode-toggle {
    font-size: 16px;
    padding: 5px 8px;
  }
  
  .calorie-reference-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .result-main-value {
    font-size: 30px;
  }
}

/* ============================================
   Responsive - Mobile (480px or less)
   ============================================ */
@media (max-width: 480px) {
  .soccer-calorie-calculator-container {
    padding: 6px;
    border-width: 1px;
  }
  
  .input-section,
  .result-section {
    padding: 6px;
  }
  
  .calculator-header .main-title {
    font-size: 24px;
  }
  
  .calculator-header .subtitle {
    font-size: 14.5px;
  }
  
  .calorie-reference-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4px;
  }
  
  .reference-icon {
    font-size: 22px;
  }
  
  .reference-title {
    font-size: 13px;
  }
  
  .reference-value {
    font-size: 14px;
  }
  
  .reference-desc {
    font-size: 11px;
  }
  
  .result-details {
    grid-template-columns: 1fr;
  }
  
  .result-main-value {
    font-size: 26px;
  }
  
  .disclaimer-list {
    font-size: 13px;
    padding-left: 16px;
  }
  
  .sample-btn,
  .reset-btn {
    font-size: 14.5px;
  }
}