/* GuideSignal Shared CSS - Consistent across all pages */
/* Base styling for all pages */

:root {
  --primary-500: #4a9eff;
  --primary-600: #1e3a5f;
  --primary-700: #1d4ed8;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
  --radius: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base reset and typography */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Open Sans', 'Helvetica Neue', sans-serif;
  color: var(--gray-900);
  background: var(--gray-50);
  min-height: 100vh;
  line-height: 1.6;
}

/* Layout components */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.main-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
}

/* Navigation */
.nav {
  background: white;
  border-bottom: 1px solid var(--gray-200);
  padding: var(--space-4) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-600);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.nav-link {
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  transition: var(--transition);
}

.nav-link:hover {
  background: var(--gray-100);
  color: var(--primary-600);
}

.nav-link.active {
  background: var(--primary-500);
  color: white;
}

/* Cards */
.card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.card-header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--gray-200);
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
}

.card-description {
  color: var(--gray-600);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  min-height: 44px;
  outline: 2px solid transparent;
  outline-offset: 2px;
}

.btn:focus-visible {
  outline: 2px solid var(--primary-500);
}

.btn-primary {
  background: var(--primary-500);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-600);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: white;
  color: var(--primary-600);
  border: 2px solid var(--primary-500);
}

.btn-secondary:hover {
  background: var(--primary-500);
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--gray-700);
  border: 2px solid var(--gray-300);
}

.btn-outline:hover {
  background: var(--gray-100);
  border-color: var(--gray-400);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
  min-height: 36px;
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1.125rem;
  min-height: 52px;
}

/* Forms */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--gray-700);
}

.form-input {
  width: 100%;
  padding: var(--space-3);
  border: 2px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 1rem;
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

.form-input:invalid {
  border-color: var(--error);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-select {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 16px;
  padding-right: calc(var(--space-3) + 24px);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-primary { color: var(--primary-500); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }
.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }

.bg-primary { background: var(--primary-500); }
.bg-success { background: var(--success); }
.bg-warning { background: var(--warning); }
.bg-error { background: var(--error); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* Loading states */
.loading {
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--gray-300);
  border-top-color: var(--primary-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Responsive design */
@media (max-width: 768px) {
  .container, .main-content {
    padding: 0 var(--space-3);
  }
  
  .nav-links {
    gap: var(--space-3);
  }
  
  .nav-link {
    padding: var(--space-2);
    font-size: 0.875rem;
  }
  
  .card {
    padding: var(--space-4);
  }
  
  .btn {
    width: 100%;
    max-width: 320px;
  }
  
  .grid-cols-2,
  .grid-cols-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .form-input,
  .form-select,
  .form-textarea {
    font-size: 16px; /* Prevent zoom on iOS */
  }
}

/* Skip links for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: var(--space-4);
  background: var(--primary-600);
  color: white;
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  border-radius: var(--radius);
  z-index: 1000;
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: var(--space-4);
}

/* Focus indicators */
*:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Selection styling */
::selection {
  background: rgba(74, 158, 255, 0.2);
  color: var(--primary-700);
}

/* Print styles */
@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }
  
  .btn {
    border: 1px solid black;
    background: white;
    color: black;
  }
  
  .nav {
    display: none;
  }
}

/* Global Readability Fixes (Fix 1) */
.hero-subtext, p, li, span {
  color: #333 !important;   /* darker text for readability */
  font-size: 16px;          /* enforce min body font size */
  font-weight: 400;         /* normal readable weight */
  line-height: 1.5;
}

.hero-subtext {
  font-size: 18px !important;
  font-weight: 500 !important; /* medium weight for emphasis */
}

h1, h2, h3 {
  color: #000 !important;
  font-weight: 700 !important;
}