/* Import Inter Variable (for development, but not needed in production if preloading via <link>) */
/* @import url('https://fonts.googleapis.com/css2?family=Inter:slnt,wght@-10..0,100..900&display=swap'); */

/* Highway-Themed CSS for Vehicle Delivery Service */

:root {
  /* Highway Sign Colors */
  --highway-green: #006747;        /* Standard highway green */
  --highway-green-light: #0d8a5f;  /* Lighter green */
  --highway-blue: #003f7f;         /* Interstate blue */
  --highway-blue-light: #1a5490;   /* Lighter blue */
  --highway-brown: #8b4513;        /* Scenic route brown */
  --highway-yellow: #ffd700;       /* Warning/construction yellow */
  --highway-orange: #ff6600;       /* Construction orange */
  --highway-red: #cc0000;          /* Stop/danger red */
  
  /* Neutral Colors */
  --road-gray: #4a4a4a;           /* Asphalt gray */
  --light-gray: #f8f9fa;          /* Light background */
  --white: #ffffff;               /* Pure white */
  --black: #000000;               /* Pure black */
  
  /* Text Colors */
  --text-primary: var(--road-gray);
  --text-secondary: #6c757d;
  --text-light: var(--white);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 24px -4px rgba(0,0,0,0.12);

  /* Bootstrap 5.3 theme variable overrides (optional) */
  --bs-primary: var(--highway-green);
  --bs-secondary: var(--highway-blue);
  --bs-warning: var(--highway-orange);
  --bs-danger: var(--highway-red);
  --bs-success: var(--highway-green-light);
  --bs-info: var(--highway-blue-light);
}

/* Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', 'Roboto', 'Merriweather Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--white);
  margin: 0;
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0) env(safe-area-inset-left, 0);
  font-weight: 400;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--road-gray);
}

h1 { font-size: 2.5rem; font-weight: 700; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }
p { margin-bottom: var(--spacing-md); }

/* Links */
a {
  color: var(--highway-blue);
  text-decoration: none;
  transition: color 0.2s;
  font-weight: 500;
}
a:hover, a:focus-visible {
  color: var(--highway-blue-light);
  text-decoration: underline;
}
a i { margin-right: 6px; }

/* Buttons - Highway Sign Style */
.btn, .highway-btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.1s;
  box-shadow: var(--shadow-sm);
}

.btn i, .highway-btn i { margin-left: var(--spacing-xs); }

.btn-primary, .highway-btn-primary {
  background-color: var(--highway-green);
  color: var(--white);
}
.btn-primary:hover, .btn-primary:focus-visible,
.highway-btn-primary:hover, .highway-btn-primary:focus-visible {
  background-color: var(--highway-green-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-secondary, .highway-btn-secondary {
  background-color: var(--highway-blue);
  color: var(--white);
}
.btn-secondary:hover, .btn-secondary:focus-visible,
.highway-btn-secondary:hover, .highway-btn-secondary:focus-visible {
  background-color: var(--highway-blue-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-warning, .highway-btn-warning {
  background-color: var(--highway-orange);
  color: var(--white);
}
.btn-warning:hover, .btn-warning:focus-visible,
.highway-btn-warning:hover, .highway-btn-warning:focus-visible {
  background-color: #e55a00;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Cards */
.card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

/* Highway-themed accents */
.accent-green { color: var(--highway-green); }
.accent-blue { color: var(--highway-blue); }
.accent-orange { color: var(--highway-orange); }

/* Background utilities */
.bg-highway-green { background-color: var(--highway-green) !important; color: var(--white) !important; }
.bg-highway-blue { background-color: var(--highway-blue) !important; color: var(--white) !important; }
.bg-light { background-color: var(--light-gray) !important; }

/* Utility classes */
.text-center { text-align: center !important; }
.text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-light { color: var(--text-light) !important; }

/* Margin utilities (if not using Bootstrap's) */
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-xs) !important; }
.mb-2 { margin-bottom: var(--spacing-sm) !important; }
.mb-3 { margin-bottom: var(--spacing-md) !important; }
.mb-4 { margin-bottom: var(--spacing-lg) !important; }
.mb-5 { margin-bottom: var(--spacing-xl) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--spacing-xs) !important; }
.mt-2 { margin-top: var(--spacing-sm) !important; }
.mt-3 { margin-top: var(--spacing-md) !important; }
.mt-4 { margin-top: var(--spacing-lg) !important; }
.mt-5 { margin-top: var(--spacing-xl) !important; }

/*
=============== Custom Styling ===============
*/

/* Text Selection Styling */
::selection {
  background: var(--highway-yellow);
  color: var(--road-gray);
}
::-moz-selection {
  background: var(--highway-yellow);
  color: var(--road-gray);
}

/* Modern focus ring styling for accessibility */
:focus-visible {
  outline: 2px solid var(--highway-orange);
  outline-offset: 2px;
}

/* Font Awesome Solid Icon Color */
.fa-solid { color: var(--highway-green); }

/* Navbar dropdown custom hover (to match highway theme) */
.navbar-nav .nav-link:hover, .navbar-nav .nav-link:focus-visible,
.dropdown-item:hover, .dropdown-item:focus-visible {
  background-color: var(--highway-green-light);
  color: var(--white);
  transition: background 0.2s, color 0.2s;
}

/* Optional: Add transitions to all interactive elements for smooth feel */
button, .btn, .highway-btn, .card, .dropdown-item, .navbar-nav .nav-link {
  transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.1s;
}