/* ============================================
   Smart Stride Length Calculator - CSS
   Follows WordPress Web Tool Developer Skill
   ============================================ */

/* Global box-sizing */
.smart-stride-length-calculator,
.smart-stride-length-calculator *,
.smart-stride-length-calculator *::before,
.smart-stride-length-calculator *::after {
  box-sizing: border-box;
}

/* ============================================
   CSS Variables - Light Mode (Default)
   ============================================ */
.smart-stride-length-calculator {
  /* 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);
}

/* ============================================
   CSS Variables - Manual Dark Mode (.dark)
   ============================================ */
.smart-stride-length-calculator.dark {
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-section: #2d2d2d;
  
  --border-color: #e0e0e0;
  
  --text-primary: #e8e8e8;
  --text-secondary: #b0b0b0;
  --text-light: #909090;
  
  --color-accent: #5dade2;
  --color-success: #52c77a;
  --color-warning: #f5b041;
  --color-danger: #ec7063;
  --color-purple: #af7ac5;
  --color-teal: #48d1cc;
  
  --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-bg: #3a3a3a;
  
  --title-color: #7fb3d5;
  --title-shadow: 2px 2px 0 rgba(0,0,0,0.5);
}

/* ============================================
   CSS Variables - System Dark Mode
   ============================================ */
@media (prefers-color-scheme: dark) {
  .smart-stride-length-calculator:not(.dark):not(.light) {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-section: #2d2d2d;
    
    --border-color: #e0e0e0;
    
    --text-primary: #e8e8e8;
    --text-secondary: #b0b0b0;
    --text-light: #909090;
    
    --color-accent: #5dade2;
    --color-success: #52c77a;
    --color-warning: #f5b041;
    --color-danger: #ec7063;
    --color-purple: #af7ac5;
    --color-teal: #48d1cc;
    
    --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-bg: #3a3a3a;
    
    --title-color: #7fb3d5;
    --title-shadow: 2px 2px 0 rgba(0,0,0,0.5);
  }
}

/* ============================================
   Main Container - 2px border
   ============================================ */
.smart-stride-length-calculator {
  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 - top right, gap 8px
   ============================================ */
.sslc-dark-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: 15.5px;
  font-weight: 600;
  color: var(--text-primary);
  z-index: 10;
}

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

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

/* ============================================
   Header
   ============================================ */
.sslc-header {
  text-align: center;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-color);
}

.sslc-title {
  margin: 0 0 4px 0;
  font-size: 28px;
  font-weight: 700;
  color: var(--title-color);
  text-shadow: var(--title-shadow);
}

.sslc-subtitle {
  margin: 0;
  font-size: 13.5px;
  color: var(--text-secondary);
}

/* ============================================
   Main Grid - 2 Column Layout
   ============================================ */
.sslc-main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 8px;
}

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

.sslc-section-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-color);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.sslc-section-header svg {
  stroke: var(--color-accent);
  flex-shrink: 0;
}

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

.sslc-label {
  display: block;
  margin-bottom: 4px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
}

.sslc-input-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.sslc-input {
  flex: 1;
  padding: 7px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 14px;
  font-family: 'Courier New', monospace;
  font-weight: 600;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}

.sslc-input: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);
}

.sslc-input::placeholder {
  color: var(--text-light);
  font-weight: 400;
}

.sslc-unit {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.sslc-input-hint {
  margin-top: 3px;
  font-size: 11px;
  color: var(--text-light);
}

/* Remove number input spinners */
.sslc-input::-webkit-outer-spin-button,
.sslc-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.sslc-input[type=number] {
  -moz-appearance: textfield;
}

/* ============================================
   Select Button Group
   ============================================ */
.sslc-select-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.sslc-select-btn {
  padding: 8px 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-button);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: var(--shadow-sm);
  font-family: inherit;
}

.sslc-select-btn:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.1);
}

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

.sslc-select-btn.selected {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* ============================================
   Action Buttons
   ============================================ */

/* Main button - 1.5px border */
.sslc-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: 15px;
  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;
  font-family: inherit;
}

.sslc-calculate-btn svg {
  stroke: currentColor;
}

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

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

/* Secondary buttons - 1px border */
.sslc-btn-group {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

.sslc-sample-btn,
.sslc-reset-btn {
  flex: 1;
  padding: 6px 10px;
  font-size: 13.5px;
  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;
  font-family: inherit;
}

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

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

.sslc-sample-btn svg,
.sslc-reset-btn svg {
  stroke: currentColor;
}

.sslc-sample-btn:hover,
.sslc-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);
}

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

/* ============================================
   Result Section
   ============================================ */
.sslc-result-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sslc-result-card {
  padding: 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-section);
  text-align: center;
}

.sslc-result-main {
  background: var(--bg-primary);
  border-color: var(--color-success);
  border-width: 1.5px;
}

.sslc-result-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.sslc-result-value-row {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.sslc-result-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-success);
  font-family: 'Courier New', monospace;
  line-height: 1;
}

.sslc-result-sub {
  font-size: 22px;
  color: var(--color-accent);
}

.sslc-result-unit {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
}

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

/* ============================================
   Analysis Box
   ============================================ */
.sslc-analysis-box {
  padding: 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-section);
}

.sslc-analysis-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
}

.sslc-analysis-header svg {
  stroke: var(--color-accent);
}

.sslc-analysis-text {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ============================================
   Tips Section
   ============================================ */
.sslc-tips-section {
  margin-bottom: 8px;
}

.sslc-tips-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.sslc-tip-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--color-teal);
  border-radius: var(--radius-section);
}

.sslc-tip-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-teal);
  color: #fff;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
}

.sslc-tip-text {
  flex: 1;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.sslc-tip-text strong {
  display: block;
  margin-bottom: 2px;
  color: var(--text-primary);
}

/* ============================================
   Footer
   ============================================ */
.sslc-footer {
  padding: 8px;
  background: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-section);
  text-align: center;
}

.sslc-footer p {
  margin: 0;
  font-size: 11px;
  color: var(--text-light);
}

/* ============================================
   Toast Notification
   ============================================ */
.sslc-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;
}

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

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

.sslc-toast-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sslc-toast-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
}

.sslc-toast-value {
  font-size: 12px;
  color: var(--text-secondary);
  font-family: 'Courier New', monospace;
}

/* ============================================
   Responsive - Tablet (768px)
   ============================================ */
@media (max-width: 768px) {
  .smart-stride-length-calculator {
    margin: 6px 5px;
    padding: 7px;
    width: calc(100% - 10px);
  }

  .sslc-main-grid {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .sslc-title {
    font-size: 24px;
  }

  .sslc-subtitle {
    font-size: 12.5px;
  }

  .sslc-section-header {
    font-size: 15px;
  }

  .sslc-dark-toggle {
    font-size: 14px;
    padding: 5px 8px;
  }

  .sslc-tips-list {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Responsive - Mobile (480px)
   ============================================ */
@media (max-width: 480px) {
  .smart-stride-length-calculator {
    padding: 6px;
    border-width: 1px;
  }

  .sslc-input-section,
  .sslc-result-section,
  .sslc-tips-section {
    padding: 6px;
  }

  .sslc-title {
    font-size: 22px;
  }

  .sslc-result-value {
    font-size: 30px;
  }

  .sslc-result-sub {
    font-size: 18px;
  }

  .sslc-result-grid {
    grid-template-columns: 1fr;
  }

  .sslc-select-group {
    grid-template-columns: 1fr;
  }

  .sslc-btn-group {
    flex-direction: column;
  }
}