/* ==========================================================================
   VARIABLES AND BASE STYLES
   ========================================================================== 
   
   CSS VARIABLE SYSTEM GUIDE
   
   The styling system is built around a comprehensive set of CSS variables 
   that control all aspects of the UI. Using these variables ensures consistent
   design and makes theme changes simple.
   
   KEY CATEGORIES:
   
   1. Typography
      - Font sizes (--text-*)
      - Font weights (--font-*)
      - Line heights (--line-height-*)
      - Letter spacing (--letter-spacing-*)
   
   2. Spacing
      - General spacing (--space-*)
      - Component-specific spacing (--border-width, --icon-size-*)
      - Border radiuses (--border-radius-*)
   
   3. Colors
      - Base palette (--color-black, --color-white)
      - Grayscale (--color-gray-light/medium/dark)
      - RGBA values (--color-black-*)
      - Semantic colors (--color-primary, --color-border, etc.)
      - Component-specific colors (--color-indicator-*)
   
   4. UI Properties
      - Opacity values (--opacity-*)
      - Transitions (--transition-*)
      - Layout dimensions (--max-width, --card-width, etc.)
   
   HOW TO USE:
   
   - Always prefer variables over hard-coded values
   - Use semantic variables where possible (--color-text-muted vs --color-gray-600)
   - Group related properties (all typography together, all sizing together)

   // Objektiv Variable Font Example
   font-family: "objektiv-variable", sans-serif;
   font-variation-settings: "wght" 400;

   or

   "objektiv-mk3"
   
*/

:root {
  /* 
   * Typography
   */

  --font-family: "objektiv-variable", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  
  /* Font sizes */
  --text-xs: .75rem;
  --text-sm: .85rem;
  --text-md: 1rem;
  --text-lg: 1.5rem;
  --text-xl: 2rem;
  --text-xxl: 4rem;
  
  /* Font weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  /* Line heights */
  --line-height-tight: 1.1;
  --line-height-normal: 1.4;
  --line-height-relaxed: 1.6;
  --line-height-loose: 1.8;
  
  /* Letter spacing */
  --letter-spacing-tighter: -0.02em;
  --letter-spacing-tight: -0.01em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.05em;
  
  /*
   * Spacing
   */
  
  --space-xxs: 0.25rem;
  --space-xs: 0.5rem;    
  --space-sm: 1rem;      
  --space-md: 1.5rem;    
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 5rem;
  
  /* Specific component spacing */
  --border-width: 2px;
  --border-radius-sm: 4px;
  --border-radius-full: 0;
  --icon-size-sm: 24px;
  
  /*
   * Colors - Base Palette
   */
  
  /* Primary */
  --color-black: #0C4ECB;
  --color-white: #F9F9FB;
  --color-highlight: #0C4ECB;
  
  /* RGBA Values for overlays and transparency */
  --color-black-faint: rgba(0, 0, 0, 0.03);
  --color-black-light: rgba(0, 0, 0, 0.1);
  --color-black-medium: rgba(0, 0, 0, 0.5);
  --color-black-dark: rgba(0, 0, 0, 0.8);
  
  /* Grayscale - Simplified to 3 values */
  --color-gray-light: #EEF2FB;  /* Light background, hover states, borders */
  --color-gray-dark: #6c757d;   /* Text, icons, secondary content */
  
  /* Alerts/Feedback */
  --color-error: #e74c3c;    /* Red */
  --color-warning: #f39c12;  /* Orange */
  --color-success: #2ecc71;  /* Green */
  --color-info: #3498db;     /* Blue */
  
  /*
   * Colors - Semantic
   */
  
  /* UI Elements */
  --color-primary: var(--color-black);
  --color-secondary: var(--color-gray-dark);
  --color-background: var(--color-white);
  --color-card-bg: var(--color-white);
  --color-border: var(--color-gray-light);
  --color-hover: var(--color-gray-light);
  --color-disabled: var(--color-gray-light);
  
  /* Text */
  --color-text: var(--color-black);
  --color-text-muted: var(--color-gray-dark);
  --color-text-light: var(--color-white);
  
  
  /* Opacity values */
  --opacity-faded: 0.7;
  --opacity-hover: 0.9;
  --opacity-full: 1;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /*
   * Layout
   */
  
  --max-width: 64rem;
  --card-width: 246px;
  --card-width-mobile: 256px;
  --bar-height: 4px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  font-size: var(--text-sm);
  font-weight: var(--font-normal);
  line-height: var(--line-height-normal);
  letter-spacing: var(--letter-spacing-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  margin: var(--space-xl) 0;
}

header {
  padding-top: var(--space-lg) !important ;
  padding-bottom: var(--space-xl) !important;
  text-align: left;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  gap: var(--space-sm);
  align-items: baseline;
}

.header-left {
  display: flex;
  gap: var(--space-sm);
}


h1 {
  font-size: var(--text-md);
  color: var(--color-primary);
  font-weight: var(--font-bold);
  line-height: var(--line-height-normal);
  margin: 0;
}

h2 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-xs);
  font-weight: var(--font-semibold);
  
  color: var(--color-primary);
  line-height: var(--line-height-normal);
}

h4 {
  font-size: var(--text-sm);
  margin-bottom: var(--space-xs);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
}

p {
  font-size: var(--text-md);
}

a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-skip-ink: auto;
  text-underline-offset: 2px;
}

a:visited {
  color: var(--color-text);
}
.main-subtitle {
  color: var(--color-text);
  margin-bottom: var(--space-xxl);
  max-width: 890px;
  font-weight: var(--font-bold);
  font-size: var(--text-xxl);
  line-height: var(--line-height-tight);
}

header p {
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 400;
  margin-bottom: var(--space-md);
}

button {
  width: 160px;
  padding: var(--space-xs) var(--space-xs);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  display: flex;
  flex-direction: row-reverse;
  gap: var(--space-xs);
  border: none;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  cursor: pointer;
  color: var(--color-primary);
  border: var(--border-width) solid var(--color-primary);
  transition: all var(--transition-fast);
}

.scan-button:hover {
  background-color: var(--color-border);
  transition: all var(--transition-fast);
}



button span {
  margin-top: 1px;
}

.limit-width {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.selection-area {
    padding-bottom: var(--space-xxl);
}

.results-area {
   padding-top: 0;
   padding-bottom: var(--space-xs);
}
.selection-area p {
  margin-bottom: var(--space-md);
}

.options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  width: 100%;
  max-width: 100%;
}

.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;
}

.option-card {
  position: relative;
  cursor: pointer;
  background-color: var(--color-card-bg);
  height: 100%;
  border: var(--border-width) solid var(--color-primary);
  overflow: hidden;
  transition: all var(--transition-fast);
  will-change: background-color;
}

.option-card:hover {
  background-color: var(--color-border);
}

.option-card:has(input:checked) {
  border-color: var(--color-black);
  background-color: var(--color-black);
}

.option-card:has(input:checked) .card-description {
  color: var(--color-white);
}
.option-card:has(input:checked) .card-header h3 {
  color: var(--color-white);
}

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

.card-content p {
  margin-bottom: 0;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xs);
}

.card-header h3 {
  font-size: var(--text-sm);
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
  line-height: 1.2;
}

.card-description {
  font-size: var(--text-xs);
  
  margin: 0;
  line-height: var(--line-height-normal);
}


.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  margin-bottom: var(--space-sm);
}

.results-header h2 {
  margin: 0;
}

.match-count {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.message {
  color: var(--color-muted);
}

.hidden {
  display: none !important;
}

.scroll-container {
  width: 100vw;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  margin-bottom: var(--space-xxl);
  /* Ensure scrolling works on all devices */
  scroll-behavior: smooth;
  /* Prevent any inherited styles from blocking scroll */
  touch-action: pan-x;
  /* Reset any potential positioning issues */
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  will-change: scroll-position;
}

/* Shadow indicators for scrolling */


.scroll-container::-webkit-scrollbar {
  height: var(--bar-height);
}

.scroll-container::-webkit-scrollbar-track {
  background: var(--color-border);
  border-radius: var(--border-radius-sm);
}

.scroll-container::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--border-radius-sm);
}

.results-container {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  padding-top: 0;
  contain: layout;
  /* Ensure flex items don't wrap and maintain horizontal layout */
  flex-wrap: nowrap;
  /* Ensure container is wide enough for all cards */
  width: max-content;
  min-width: 100%;
}

/* Water Card (New Design) */
.water-card {
  border: var(--border-width) solid var(--color-primary);
  padding: 0;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--color-card-bg);
  /* Prevent cards from shrinking */
  flex: 0 0 auto;
  width: var(--card-width);
  max-width: var(--card-width);
  min-width: var(--card-width);
  margin: 0;
  will-change: transform;
}

.water-card-header {
  background-color: var(--color-card-bg);
  color: var(--color-text);
  padding: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.water-card-header h3 {
  margin: 0;
  font-size: var(--text-md);
  font-weight: var(--font-bold);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-tight);
  max-width: 7rem;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.match-score {
  font-size: var(--text-xs);
  color: var(--color-highlight);
}

.water-description {
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-card-bg);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-text);
  max-height: 200px;
  overflow: hidden;
  display: none;

}

.potential-section, 
.characteristics-section {
  padding: 0 var(--space-md) var(--space-sm);
}

.potential-item {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  gap: var(--space-xs);
  margin-bottom: var(--space-xs);
  align-items: center;
}

.potential-label {
  font-size: var(--text-xs);
  color: var(--color-text);
}

.potential-bar {
  width: 40%;
  height: var(--bar-height);
  background-color: var(--color-hover);
  position: relative;
}

.potential-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background-color: var(--color-primary);
  transition: width var(--transition-slow);
}

.characteristic-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
  font-size: var(--text-xs);
  align-items: center;
}

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

.characteristic-name {
  
}

.characteristic-value {
  font-weight: var(--font-semibold);
}

hr {
    border: none;
    border-top: 2px solid var(--color-black);
    width: 100%;


}

footer {
  padding-bottom: var(--space-xl) !important;
  padding-left: var(--space-md) !important;
  padding-right: var(--space-md) !important;
  color: var(--color-text);
  font-size: var(--text-sm);

  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: baseline;
}

footer p {
  font-size: var(--text-sm);
}

.footer-left {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  margin-top: var(--space-md);
}

.footer-created {
  padding-top: var(--space-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
  justify-content: space-between;
  align-content: center;
  flex-direction: row;
  width: 100%;
}

.footer-created div {
  display: flex;
  gap: var(--space-xxs);
  align-items: baseline;
}

.footer-link {
  color: var(--color-primary);
  
}



.scan-button {

}

.scan-button:hover {
  
}

.scan-button svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

/* Modal Styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 1;
  transition: opacity 1s ease;
  will-change: opacity;
}

.modal.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-content {
  background-color: var(--color-card-bg);
  width: 95%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-primary);
  color: var(--color-card-bg);
}

.modal-header h2 {
  margin: 0;
  font-size: var(--text-md);
  color: var(--color-card-bg);
}

.close-button {
  width: var(--icon-size-sm);
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-card-bg);
  transition: color 0.2s ease;
}

.close-button:hover {
  color: var(--color-hover);
}

/* Modal Content */
.tab-content {
  padding: var(--space-md);
  transition: all 0.3s ease;
}

/* OCR Results inside modal - override main page results-container styles */
.modal .results-container {
  display: block;
  width: 100%;
  min-width: auto;
  padding: var(--space-md);
  flex-wrap: wrap;
}

.modal .results-container .water-card,
.modal .results-container .ocr-card {

}

/* OCR card header with brand input */
.modal .ocr-card .water-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.modal .ocr-card .water-card-header .brand-input {
  flex: 1;
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  padding: 0;
  margin: 0;
}

.modal .ocr-card .water-card-header .brand-input:focus {
  outline: none;
  border-bottom-color: var(--color-primary);
}

.modal .ocr-card .water-card-header .brand-input::placeholder {
  color: var(--color-muted);
  font-weight: var(--font-medium);
}

/* OCR card characteristics matching catalog layout */
.modal .ocr-card .characteristic-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  min-height: auto;
}

.modal .ocr-card .characteristic-value {
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
}

.modal .ocr-card .mineral-input {
  width: 70px;
  padding: 4px 8px;
  
  border-radius: var(--border-radius-sm);
  font-size: var(--text-sm);
  text-align: right;
  font-weight: var(--font-bold);
  color: var(--color-primary);
  background: var(--color-card-bg);
}

.modal .ocr-card .mineral-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.modal .ocr-card .unit {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: var(--font-medium);
  min-width: 35px;
}

/* Upload Area */
.upload-area {
  border: 2px dashed var(--color-border);
  padding: var(--space-md);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  min-height: 256px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--color-background);
  gap: var(--space-md);
  align-content: space-around;
  font-family: var(--font-family);
}

.upload-area:hover {
  border-color: var(--color-primary);
  background-color: var(--color-border);
}

.upload-area p {
  color: var(--color-muted);
  margin: 0;
  padding: 0 var(--space-lg);
  line-height: var(--line-height-normal);
  font-family: var(--font-family);
}

.upload-icon {
  color: var(--color-muted);
}

.file-input {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  opacity: 0;
  cursor: pointer;
}

/* Preview Container */
.preview-container {
  text-align: center;
}

#image-preview {
  max-width: 100%;
  max-height: 300px;
  margin-bottom: var(--space-sm);
}

.action-button {
  background-color: var(--color-primary);
  color: white;
  border: none;
  padding: var(--space-xs);
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  cursor: pointer;
  transition: all 0.3s ease;
  margin-right: var(--space-xs);
}

.action-button:hover {
  background-color: #333333;
}

.action-button:active {
  transform: translateY(0);
}

.cancel-button {
  background-color: var(--color-background);
  color: var(--color-text);
  padding: var(--space-xs) var(--space-md);
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  cursor: pointer;
  transition: all 0.3s ease;
}

.cancel-button:hover {
  background-color: var(--color-gray-light);
}

.cancel-button:active {
  transform: translateY(0);
}

/* Camera Container */
.camera-view {
  position: relative;
  width: 100%;
  max-width: 100%;
  min-height: 250px;
  background-color: var(--color-background);
  overflow: hidden;
  margin-bottom: var(--space-md);
}

#camera-feed {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.camera-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.scan-region {
  width: 96%;
  height: 96%;
  margin-bottom: var(--space-sm);
}



.camera-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
}

.capture-icon {
  display: inline-block;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid white;
  margin-right: var(--space-xs);
}

/* OCR Results */
.ocr-card {
  max-width: 100%;
  margin: 0 auto var(--space-md) auto;
}

.brand-input {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--color-border);
  font-size: var(--text-sm);
  margin-bottom: var(--space-sm);
  font-family: var(--font-family);
}

.mineral-input {
  width: 60px;
  padding: 8px;
  border: 1px solid var(--color-border);
  font-size: var(--text-sm);
  text-align: right;
  font-weight: bold;
  font-family: var(--font-family);
  -moz-appearance: textfield; /* Remove number spinner in Firefox */
}

.mineral-input::-webkit-outer-spin-button,
.mineral-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* For backward compatibility */
.stat-value-input {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.stat-value-input input {
  width: 60px;
  padding: 8px;
  border: 1px solid var(--color-border);
  font-size: var(--text-sm);
  text-align: right;
  font-weight: bold;
  font-family: var(--font-family);
  -moz-appearance: textfield; /* Remove number spinner in Firefox */
}

.stat-value-input input::-webkit-outer-spin-button,
.stat-value-input input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.unit {
  margin-left: 4px;
  font-weight: bold;
}

/* OCR Analysis Section */
.ocr-analysis-section {
  background-color: var(--color-card-bg);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  border: 1px solid var(--color-border);
}

.ocr-analysis-section h3 {
  font-size: var(--text-md);
  margin-bottom: var(--space-xs);
  color: var(--color-primary);
  font-weight: var(--font-bold);
}

.ocr-warnings {
  background-color:var(--color-gray-light);
  padding: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.warning-title {
  color: var(--color-warning);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-xs);
}

#warnings-list {
  margin: 0;
  padding-left: var(--space-sm);
  color: var(--color-text);
  font-size: var(--text-xs);
  line-height: var(--line-height-relaxed);
}

.ocr-error-message {
  background-color: var(--color-gray-light);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.ocr-error-message h3 {
  color: var(--color-error);
  font-size: var(--text-md);
  margin-bottom: var(--space-sm);
}

.ocr-error-message p {
  color: var(--color-text);
  font-size: var(--text-sm);
  margin-bottom: var(--space-xs);
}

.ocr-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.ocr-actions .action-button,
.ocr-actions .cancel-button {
  width: 200px;
  margin-right: 0;
}

.upload-new-link {
  margin-top: var(--space-md);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: color 0.2s ease;
  padding: var(--space-sm);
  display: inline-block;
  text-align: center;
  font-weight: var(--font-bold);
  color: var(--color-background);
  margin-bottom: var(--space-md);
  background-color: var(--color-primary);
}

.upload-new-link:hover {

}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 3000; /* Higher than modal to appear on top */
  color: white;
  contain: layout paint; /* Performance optimization */
}

.loading-overlay.hidden {
  display: none !important;
}

.loading-overlay:not(.hidden) {
  display: flex;
}

/* New modern loading spinner - SVG based */
.loading-spinner {
  width: 65px;
  height: 65px;
  margin-bottom: var(--space-sm);
  animation: rotator 1.4s linear infinite;
  will-change: transform;
}

@keyframes rotator {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(270deg); }
}

/* SVG path styling for the spinner */
.loading-spinner svg {
  width: 100%;
  height: 100%;
}

.spinner-path {
  stroke-dasharray: 187;
  stroke-dashoffset: 0;
  transform-origin: center;
  stroke: var(--color-white);
  animation: dash 1.4s ease-in-out infinite, 
             colors 5.6s ease-in-out infinite;
}

@keyframes colors {
  0% { stroke: var(--color-white); }
  50% { stroke: rgba(255, 255, 255, 0.5); }
  100% { stroke: var(--color-white); }
}

@keyframes dash {
 0% { stroke-dashoffset: 187; }
 50% {
   stroke-dashoffset: 46.75; /* 187/4 */
   transform: rotate(135deg);
 }
 100% {
   stroke-dashoffset: 187;
   transform: rotate(450deg);
 }
}

#loading-message {
  font-size: var(--text-sm);
  text-align: center;
  margin-top: var(--space-xs);
  max-width: 80%;
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   RESPONSIVE STYLES
   ========================================================================== */

/* Mobile styles (768px and below) */
@media (max-width: 768px) {
  /* Grid layout adjustments */
  .options {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
  
  .option-card {
    max-width: 100%;
  }
  
  /* Better tap targets for mobile */
  button, 
  .option-card,
  a.language-link,
  input[type="text"],
  input[type="number"] {
    min-height: 44px;
  }
  
  /* Content spacing adjustments */
  .card-content {
    padding: var(--space-sm);
  }
  
  .main-subtitle {
    font-size: calc(var(--text-xl) * 1.2);
    line-height: 1.2;
    margin-bottom: var(--space-xl);
  }
  
  
  /* Footer adjustments */
  footer {
    padding-bottom: var(--space-sm);
    
  }
  
  /* Results area adjustments */
  .scroll-container {
    margin-bottom: var(--space-xl);
  }
  
  .results-container {

  }
  
  .water-card {
    width: var(--card-width-mobile);
    max-width: var(--card-width-mobile);
  }
}

/* Small mobile screens (480px and below) */
@media (max-width: 480px) {
  /* Global spacing adjustments */
  .limit-width {
    padding: 0 var(--space-xs) !important;
  }

  body {
    padding: var(--space-xs);
  }
  
  /* Header adjustments */
  header {
    margin-bottom: var(--space-lg) !important;
    padding-top: 0 !important;
  }


  /* Results area adjustments */
  .results-area {
    margin-top: var(--space-xl);
  }
  
  .results-container {
    padding: var(--space-sm);
  }

  
  /* Footer adjustments */
  footer {
    margin: var(--space-sm) var(--space-xs) 0 !important;
  }

  footer.limit-width {
    padding: 0 !important;
  }

  .footer-left {

  }

  .footer-created {

  }
  
  /* Button adjustments */
  .scan-button {
    width: 44px;
    height: 44px;
    justify-content: center;
  }

  .scan-button span {
    display: none;
  }
  
  /* Typography adjustments */
  .card-description {
    font-size: 12px; 
  }
  
  .main-subtitle {
    font-size: 3rem;
    line-height: 1.2;
    letter-spacing: var(--letter-spacing-tighter);
  }
  
  /* Modal adjustments */
  .camera-view {
    min-height: 200px;
  }
  
  .modal-content {
    width: 95%;
    max-height: 85vh;
  }
  
  #scanner-modal {
    padding: var(--space-xs);
  }
  
  /* Form input adjustments */
  input[type="number"], 
  input[type="text"] {
    padding: 10px;
    font-size: 16px; /* Prevents iOS zoom on input focus */
  }
  
  /* Camera UI adjustments */
  .camera-controls {
    flex-direction: column;
  }
  
  .action-button,
  .cancel-button {
    width: 100%;
    margin: var(--space-xs) 0;
  }
}

/* ==========================================================================
   INPUT VALIDATION STYLES
   ========================================================================== */

/* Validation states for inputs */
.mineral-input.valid {
  border-color: #4caf50;
  background-color: rgba(76, 175, 80, 0.05);
}

.mineral-input.invalid {
  border-color: #f44336;
  background-color: rgba(244, 67, 54, 0.05);
}

/* Validation error messages - positioned absolutely to prevent layout shift */
.validation-error {
  position: absolute;
  top: 100%;
  right: 0;
  font-size: 10px;
  color: #f44336;
  margin-top: 2px;
  opacity: 0;
  transition: opacity var(--transition-fast);
  white-space: nowrap;
  pointer-events: none;
  z-index: 1;
}

.validation-error.visible {
  opacity: 1;
}

/* Characteristic item with validation */
.characteristic-item {
  position: relative;
  
}

.characteristic-value {
  position: relative;
}

/* Extra space for error messages in modal */
.modal .ocr-card .characteristic-item {
  
}

/* Focus states with validation */
.mineral-input:focus.valid {
  outline: 2px solid #4caf50;
  outline-offset: 2px;
}

.mineral-input:focus.invalid {
  outline: 2px solid #f44336;
  outline-offset: 2px;
}

/* Disabled state for submit when invalid */
.submit-disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Animation for validation feedback */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

.mineral-input.invalid:not(:focus) {
  animation: shake 0.3s ease-in-out;
}

/* Accessibility improvements for validation */
.mineral-input[aria-invalid="true"] {
  border-width: 2px;
}

/* Mobile adjustments for validation */
@media (max-width: 768px) {
  .validation-error {
    font-size: 9px;
  }
}