/* ===================================================================
   POCKET SCORESHEETS - OPTIMIZED STYLES (CSS COMPATIBLE)
   Used by: index.html, app.html, instructions.html
   Last Updated: October 11, 2025
   Version: 8 (Fixed for CSS compatibility)
   =================================================================== */

/* CSS Custom Properties for consistency and easy maintenance */
:root {
  /* Colors */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --success-gradient: linear-gradient(135deg, #28a745 0%, #20c997 100%);
  --info-gradient: linear-gradient(135deg, #36d1dc 0%, #5b86e5 100%);
  --warning-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --danger-gradient: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
  --purple-gradient: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
  
  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ccc;
  --gray-500: #666;
  --gray-600: #495057;
  --gray-700: #333;
  --gray-800: #666;
  
  /* Semantic Colors */
  --text-primary: #333;
  --text-secondary: #666;
  --text-muted: #888;
  --border-light: #e9ecef;
  --success-light: #d4edda;
  --success-dark: #155724;
  --warning-light: #fff3cd;
  --warning-dark: #856404;
  --danger: #dc3545;
  --danger-dark: #c82333;
  
  /* Spacing */
  --spacing-xs: 5px;
  --spacing-sm: 10px;
  --spacing-md: 15px;
  --spacing-lg: 20px;
  --spacing-xl: 30px;
  --spacing-2xl: 40px;
  --spacing-3xl: 50px;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-size-xs: 0.8rem;
  --font-size-sm: 0.9rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.1rem;
  --font-size-xl: 1.2rem;
  --font-size-2xl: 1.3rem;
  --font-size-3xl: 1.4rem;
  --font-size-4xl: 2rem;
  --font-size-5xl: 2.5rem;
  --font-size-6xl: 3.5rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-xl: 15px;
  --radius-2xl: 20px;
  --radius-3xl: 30px;
  
  /* Shadows */
  --shadow-sm: 0 4px 10px rgba(0,0,0,0.1);
  --shadow-md: 0 8px 20px rgba(0,0,0,0.15);
  --shadow-lg: 0 15px 40px rgba(0,0,0,0.2);
  --shadow-xl: 0 30px 60px rgba(0,0,0,0.15);
  
  /* Transitions */
  --transition: all 0.3s ease;
  --transition-slow: all 0.4s ease;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background: var(--primary-gradient);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

body.instructions-page {
  display: block;
  padding: var(--spacing-2xl) var(--spacing-lg);
  align-items: initial;
  justify-content: initial;
}

/* Common Animations */
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

@keyframes slideInDown {
  from { opacity: 0; transform: translateY(-50px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Common Container Styles */
.welcome-container,
.container {
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-2xl);
  width: 100%;
  position: relative;
  overflow: hidden;
  margin: var(--spacing-lg) 0;
}

.welcome-container {
  border-radius: var(--radius-3xl);
  box-shadow: var(--shadow-xl);
  padding: 80px 60px;
  text-align: center;
  max-width: 600px;
}

.welcome-container::before,
.welcome-container::after {
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(54, 209, 220, 0.05) 0%, transparent 70%);
  animation: float 6s ease-in-out infinite;
}

.welcome-container::before {
  top: -50%;
  left: -50%;
}

.welcome-container::after {
  bottom: -30%;
  right: -30%;
  width: 150%;
  height: 150%;
  background: radial-gradient(circle, rgba(240, 147, 251, 0.05) 0%, transparent 60%);
  animation: float 8s ease-in-out infinite reverse;
}

.container {
  max-width: 900px;
  text-align: left;
}

/* Typography */
h1 {
  color: var(--text-primary);
  font-size: var(--font-size-6xl);
  font-weight: 300;
  margin-bottom: var(--spacing-2xl);
  line-height: 1.2;
  position: relative;
  z-index: 10;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;

}

.container h1 {
  text-align: center;
  font-size: var(--font-size-5xl);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  color: var(--text-primary);

}

.container h1:hover {
  transform: translateY(-1px);
  opacity: 0.8;
}

/* Button Base Styles */
.btn,
.open-tracker-btn,
.instructions-btn,
.btn-primary,
.btn-secondary,
.btn-info,
.btn-danger,
.add-player-btn,
.reset-btn,
.export-btn,
.back-btn {
  border: none;
  cursor: pointer;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  text-decoration: none;
  display: inline-block;
  text-align: center;
  font-family: inherit;
}

.btn:hover,
.open-tracker-btn:hover,
.instructions-btn:hover,
.btn-primary:hover,
.btn-secondary:hover,
.btn-info:hover,
.btn-danger:hover,
.add-player-btn:hover,
.reset-btn:hover,
.export-btn:hover,
.back-btn:hover {
  transform: translateY(-2px);
}

.btn:active,
.open-tracker-btn:active,
.instructions-btn:active,
.btn-primary:active,
.btn-secondary:active,
.btn-info:active,
.btn-danger:active,
.add-player-btn:active,
.reset-btn:active,
.export-btn:active,
.back-btn:active {
  transform: translateY(-1px);
}

.btn:disabled,
.open-tracker-btn:disabled,
.instructions-btn:disabled,
.btn-primary:disabled,
.btn-secondary:disabled,
.btn-info:disabled,
.btn-danger:disabled,
.add-player-btn:disabled,
.reset-btn:disabled,
.export-btn:disabled,
.back-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Specific Button Styles */
.open-tracker-btn {
  background: var(--success-gradient);
  color: var(--white);
  padding: 20px 40px;
  font-size: 1.3rem;
  border-radius: var(--radius-xl);
  box-shadow: 0 10px 30px rgba(40, 167, 69, 0.3);
  animation: slideInUp 1s ease-out 0.6s both;
}

.open-tracker-btn:hover {
  background: linear-gradient(135deg, #34ce57 0%, #2dd4aa 100%);
  box-shadow: 0 15px 40px rgba(40, 167, 69, 0.4);
  transform: translateY(-5px);
}

.instructions-btn {
  background: var(--info-gradient);
  color: var(--white);
  padding: var(--spacing-md) 35px;
  font-size: var(--font-size-lg);
  box-shadow: 0 8px 25px rgba(54, 209, 220, 0.3);
  animation: slideInUp 1s ease-out 0.8s both;
}

.instructions-btn:hover {
  background: linear-gradient(135deg, #54d6e0 0%, #6b8ee8 100%);
  box-shadow: 0 12px 30px rgba(54, 209, 220, 0.4);
  transform: translateY(-3px);
}

.btn-primary,
.add-player-btn {
  background: var(--success-gradient);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
  box-shadow: 0 6px 15px rgba(40, 167, 69, 0.3);
}

.btn-primary:hover,
.add-player-btn:hover {
  background: linear-gradient(135deg, #34ce57 0%, #2dd4aa 100%);
  box-shadow: 0 8px 25px rgba(40, 167, 69, 0.4);
}

.btn-secondary {
  background: var(--gray-50);
  color: var(--gray-600);
  border: 2px solid var(--gray-300);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.btn-secondary:hover {
  background: var(--gray-200);
}

.btn-danger,
.reset-btn {
  background: var(--danger-gradient);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
  box-shadow: 0 6px 15px rgba(255, 107, 107, 0.3);
}

.btn-danger:hover,
.reset-btn:hover {
  background: linear-gradient(135deg, #ff5252 0%, #e64a19 100%);
  box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
}

.export-btn {
  background: var(--purple-gradient);
  color: var(--white);
  padding: 8px 15px;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 10px rgba(108, 92, 231, 0.3);
}

.export-btn:hover {
  background: linear-gradient(135deg, #5f3dc4 0%, #9775fa 100%);
  box-shadow: 0 6px 15px rgba(108, 92, 231, 0.4);
  transform: translateY(-1px);
}

.back-btn {
  background: #e0e0e0;
  color: var(--text-primary);
  padding: 8px 15px;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
}

.back-btn:hover {
  background: var(--gray-400);
}

/* Form Elements */
.input,
.title-input,
.point-picker,
.player-name-input {
  background: transparent;
  border: 2px solid;
  color: var(--text-primary);
  font-size: inherit;
  text-align: center;
  width: 100%;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  outline: none;
  font-family: inherit;
  transition: var(--transition);
}

.input:focus,
.title-input:focus,
.point-picker:focus {
  box-shadow: 0 0 0 3px rgba(54, 209, 220, 0.1);
}

.title-input {
  border-color: #36d1dc;
  font-size: var(--font-size-5xl);
  font-weight: 300;
}

.title-input:focus {
  border-color: #2fb5c4;
}

.point-picker {
  background: var(--white);
  border-color: var(--border-light);
  font-weight: 600;
  color: var(--gray-600);
  width: 80px;
}

.point-picker:focus {
  border-color: #36d1dc;
}

.player-name-input {
  background: transparent;
  border: none;
  color: var(--white);
  font-size: var(--font-size-xl);
  font-weight: 600;
  text-align: center;
  width: 100%;
  outline: none;
  cursor: pointer;
}

.player-name-input.editing {
  cursor: text;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 4px var(--spacing-sm);
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.player-name-input::placeholder {
  color: rgba(255, 255, 255, 0.8);
}

/* Layout Components */
.players-container,
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.button-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
  position: relative;
  z-index: 10;
}

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

.score-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.controls-container {
  text-align: center;
  margin-top: var(--spacing-xl);
}

.features {
  display: flex;
  justify-content: space-around;
  margin-top: var(--spacing-2xl);
  gap: var(--spacing-xl);
  position: relative;
  z-index: 10;
}

/* Specific Components */
.subtitle {
  color: var(--text-secondary);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-3xl);
  position: relative;
  z-index: 10;
  animation: slideInUp 1s ease-out 0.3s both;
}

.instructions {
  text-align: center;
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-lg);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border-left: 4px solid #36d1dc;
}

.score-box {
  background: var(--gray-50);
  border: 3px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  font-size: 4rem;
  font-weight: 700;
  color: var(--gray-600);
  margin-bottom: var(--spacing-lg);
  transition: var(--transition);
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.score-box.updated {
  transform: scale(1.05);
  border-color: #28a745;
  background: var(--success-light);
  color: var(--success-dark);
}

.player-section {
  text-align: center;
}

.player-label {
  background: var(--warning-gradient);
  color: var(--white);
  padding: var(--spacing-md) 25px;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  box-shadow: 0 8px 20px rgba(240, 147, 251, 0.3);
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}

.player-label:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 25px rgba(240, 147, 251, 0.4);
}

.remove-btn {
  background: var(--danger);
  color: var(--white);
  border: none;
  padding: 8px 16px;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin-top: var(--spacing-sm);
  transition: var(--transition);
}

.remove-btn:hover {
  background: var(--danger-dark);
  transform: translateY(-1px);
}

.add-points-btn {
  background: var(--info-gradient);
  color: var(--white);
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 10px rgba(54, 209, 220, 0.3);
}

.add-points-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 15px rgba(54, 209, 220, 0.4);
}

.title-char-count {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

.title-char-count.warning {
  color: #ff6b6b;
}

/* Feature animations */
.feature {
  text-align: center;
  opacity: 0;
  animation: fadeInUp 1s ease-out 1s both;
}

.feature:nth-child(2) {
  animation-delay: 1.2s;
}

.feature:nth-child(3) {
  animation-delay: 1.4s;
}

.feature-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

.feedback-section {
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-light);
  position: relative;
  z-index: 10;
  opacity: 0;
  animation: fadeInUp 1s ease-out 1.6s both;
  text-align: center;
}

.feedback-text {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
}

.feedback-email {
  color: #667eea;
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.feedback-email:hover {
  background: rgba(102, 126, 234, 0.1);
  color: #5a67d8;
  transform: translateY(-1px);
}

/* Instructions page feedback email override */
.content .feedback-email {
  color: #36d1dc;
}

.content .feedback-email:hover {
  background: rgba(54, 209, 220, 0.1);
  color: #2fb5c4;
}

/* Modals */
.modal,
.export-modal,
.confirmation-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal.show,
.export-modal.show,
.confirmation-modal.show {
  display: flex;
}

.modal-content,
.export-modal-content,
.confirmation-modal-content {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  max-width: 400px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.confirmation-modal-content {
  max-width: 500px;
}

.modal-content h3,
.export-modal h3,
.confirmation-modal h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  font-size: 1.5rem;
  font-weight: 600;
}

.confirmation-modal h3 {
  color: var(--danger);
  margin-bottom: var(--spacing-md);
  font-size: 1.4rem;
}

.modal-content p,
.export-modal p,
.confirmation-modal p {
  color: var(--text-secondary);
  margin-bottom: 25px;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.export-options,
.confirmation-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.confirmation-buttons {
  gap: var(--spacing-sm);
}

.export-option-btn {
  background: var(--purple-gradient);
  color: var(--white);
  border: none;
  padding: var(--spacing-md) 25px;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 10px rgba(108, 92, 231, 0.3);
}

.export-option-btn:hover {
  background: linear-gradient(135deg, #5f3dc4 0%, #9775fa 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(108, 92, 231, 0.4);
}

.export-option-btn.secondary {
  background: var(--info-gradient);
  box-shadow: 0 4px 10px rgba(54, 209, 220, 0.3);
}

.export-option-btn.secondary:hover {
  background: linear-gradient(135deg, #2fb5c4 0%, #4c7ce5 100%);
  box-shadow: 0 6px 15px rgba(54, 209, 220, 0.4);
}

.export-cancel-btn,
.cancel-confirm-btn {
  background: var(--gray-50);
  color: var(--gray-600);
  border: 2px solid var(--gray-300);
  padding: 12px 25px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  margin-top: var(--spacing-sm);
}

.cancel-confirm-btn {
  padding: var(--spacing-sm) 25px;
  margin-top: var(--spacing-xs);
}

.export-cancel-btn:hover,
.cancel-confirm-btn:hover {
  background: var(--gray-200);
  transform: translateY(-1px);
}

.confirm-btn {
  background: var(--danger-gradient);
  color: var(--white);
  border: none;
  padding: 12px 25px;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 10px rgba(255, 107, 107, 0.3);
}

.confirm-btn:hover {
  background: linear-gradient(135deg, #ff5252 0%, #e64a19 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(255, 107, 107, 0.4);
}

.export-first-btn {
  background: var(--purple-gradient);
  color: var(--white);
  border: none;
  padding: 12px 25px;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 10px rgba(108, 92, 231, 0.3);
}

.export-first-btn:hover {
  background: linear-gradient(135deg, #5f3dc4 0%, #9775fa 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(108, 92, 231, 0.4);
}

/* Instructions Page Specific */
.tutorial-container {
  max-width: 900px;
  margin: 0 auto;
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.header {
  background: var(--info-gradient);
  color: var(--white);
  padding: var(--spacing-2xl) var(--spacing-3xl);
  text-align: center;
}

.header h1 {
  font-size: var(--font-size-5xl);
  font-weight: 300;
  margin-bottom: var(--spacing-sm);
  color: var(--white);
  background: none;
  -webkit-text-fill-color: var(--white);
}

.header p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
}

.content {
  padding: var(--spacing-3xl);
}

.step {
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  background: var(--gray-50);
  border-left: 5px solid #36d1dc;
  transition: var(--transition);
}

.step:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--info-gradient);
  color: var(--white);
  border-radius: 50%;
  font-weight: 700;
  font-size: var(--font-size-xl);
  margin-right: var(--spacing-lg);
  flex-shrink: 0;
}

.step-header {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.step-title {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  color: var(--text-primary);
}

.step-description {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 1.05rem;
  margin-left: 60px;
}

.header-nav {
  max-width: 900px;
  margin: 0 auto var(--spacing-lg) auto;
  display: flex;
  justify-content: flex-start;
}

.back-to-home-btn {
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
  padding: 12px 24px;
  font-size: var(--font-size-base);
  font-weight: 500;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(10px);
}

.back-to-home-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

.tip-box {
  background: linear-gradient(135deg, var(--warning-light) 0%, #ffeaa7 100%);
  border: 1px solid #ffeaa7;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  border-left: 5px solid #f39c12;
}

.tip-box h3 {
  color: #d68910;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.tip-box p {
  color: var(--warning-dark);
  margin: 0;
  line-height: 1.5;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin: var(--spacing-xl) 0;
}

.feature-card {
  background: var(--white);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 25px;
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  border-color: #36d1dc;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(54, 209, 220, 0.15);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.4;
}

.navigation-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 2px solid var(--border-light);
}

.nav-btn {
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-lg);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-block;
}

.demo-section {
  background: var(--primary-gradient);
  color: var(--white);
  padding: var(--spacing-2xl);
  margin: var(--spacing-2xl) calc(-1 * var(--spacing-3xl)) calc(-1 * var(--spacing-3xl)) calc(-1 * var(--spacing-3xl));
  text-align: center;
}

.demo-section h2 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  font-weight: 300;
}

.demo-section p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
  opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --font-size-6xl: 2.5rem;
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.8rem;
  }

  body {
    align-items: flex-start;
    padding: var(--spacing-sm);
  }

  body.instructions-page {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  .welcome-container {
    padding: 60px 40px;
    border-radius: var(--radius-2xl);
    margin: var(--spacing-sm) 0;
  }

  .container {
    padding: var(--spacing-xl) var(--spacing-lg);
    margin: var(--spacing-sm) 0;
  }

  .players-container,
  .grid-auto {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .score-box {
    font-size: 3rem;
    padding: 25px;
    min-height: 100px;
  }

  .step {
    padding: var(--spacing-lg);
  }

  .step-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .step-number {
    margin-right: 0;
    margin-bottom: var(--spacing-md);
  }

  .step-description {
    margin-left: 0;
  }

  .header-controls {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: stretch;
  }

  .back-btn, 
  .export-btn {
    width: 100%;
    text-align: center;
  }

  .score-controls {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .point-picker {
    width: 100px;
  }

  .add-points-btn {
    font-size: 0.9rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .add-player-btn, 
  .reset-btn {
    font-size: var(--font-size-base);
    padding: 12px var(--spacing-lg);
    margin: var(--spacing-xs);
  }

  .player-name-input {
    font-size: var(--font-size-xl);
    -webkit-user-select: text;
    user-select: text;
  }

  .player-name-input.editing {
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.8);
  }

  .header-nav {
    margin-bottom: var(--spacing-md);
  }

  .back-to-home-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9rem;
  }

  .content {
    padding: var(--spacing-xl) 25px;
  }

  .header {
    padding: var(--spacing-xl) 25px;
  }

  .header h1 {
    font-size: var(--font-size-4xl);
  }

  .navigation-buttons {
    flex-direction: column;
    align-items: center;
  }

  .nav-btn {
    width: 100%;
    max-width: 300px;
  }

  .demo-section {
    margin: var(--spacing-2xl) -25px calc(-1 * var(--spacing-xl)) -25px;
  }

  .container h1 {
    background: none !important;
    -webkit-text-fill-color: var(--text-primary) !important;
    color: var(--text-primary) !important;
    animation: none !important;
    transition: none !important;
}

}

@media (max-width: 480px) {
  :root {
    --font-size-6xl: 2rem;
    --font-size-5xl: 1.8rem;
  }

  body {
    padding: var(--spacing-xs);
  }

  body.instructions-page {
    padding: var(--spacing-md) var(--spacing-xs);
  }

  .welcome-container {
    padding: var(--spacing-2xl) var(--spacing-xl);
    margin: var(--spacing-xs) 0;
    border-radius: var(--radius-xl);
  }

  .open-tracker-btn {
    width: 100%;
    padding: 16px var(--spacing-xl);
    font-size: var(--font-size-base);
  }

  .instructions-btn {
    width: 100%;
    padding: 14px 25px;
    font-size: 0.95rem;
  }

  .features {
    margin-top: 25px;
    gap: var(--spacing-lg);
    flex-direction: column;
  }

  .feature-icon {
    font-size: 2rem;
  }

  .feedback-section {
    margin-top: 35px;
  }

  .feedback-text {
    font-size: 0.85rem;
  }
}

@media (max-height: 600px) {
  body {
    align-items: flex-start;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
  }

  body.instructions-page {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .welcome-container {
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  :root {
    --font-size-6xl: 1.8rem;
  }

  .subtitle {
    font-size: 0.9rem;
    margin-bottom: 25px;
  }

  .button-group {
    gap: var(--spacing-sm);
    margin-bottom: 25px;
  }

  .features {
    margin-top: var(--spacing-lg);
  }

  .feedback-section {
    margin-top: 25px;
  }
}