/* CalculateMyCase.co.uk - Main Stylesheet */

/* CSS Custom Properties (Design System) */
:root {
  /* Primary Colors */
  --color-primary-blue: #1a4b8c;
  --color-secondary-blue: #2d6eb0;
  --color-accent-green: #2e7d32;
  --color-warm-grey: #f5f5f5;
  
  /* Secondary Colors */
  --color-dark-grey: #333333;
  --color-medium-grey: #666666;
  --color-light-grey: #f8f9fa;
  --color-white: #ffffff;
  
  /* Accent Colors */
  --color-warning-orange: #f57c00;
  --color-success-green: #43a047;
  --color-error-red: #d32f2f;
  
  /* Typography */
  --font-family-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Font Sizes */
  --font-size-h1: 3rem;
  --font-size-h2: 2.25rem;
  --font-size-h3: 1.75rem;
  --font-size-h4: 1.375rem;
  --font-size-body: 1rem;
  --font-size-small: 0.875rem;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  
  /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-tooltip: 400;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-system);
  font-size: var(--font-size-body);
  line-height: 1.6;
  color: var(--color-dark-grey);
  background-color: var(--color-white);
}

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

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--color-secondary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-blue);
  text-decoration: underline;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary-blue);
  color: var(--color-white);
  padding: var(--spacing-sm);
  text-decoration: none;
  z-index: var(--z-tooltip);
}

.skip-link:focus {
  top: 0;
}

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

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-lg);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Flexbox */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.flex-column {
  display: flex;
  flex-direction: column;
}

/* Sections */
section {
  padding: var(--spacing-2xl) 0;
}

section.section-light {
  background-color: var(--color-light-grey);
}

section.section-warm {
  background-color: var(--color-warm-grey);
}

/* Cards */
.card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-secondary-blue), var(--color-primary-blue));
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  text-align: center;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-blue);
  text-decoration: none;
}

.btn-secondary {
  background-color: var(--color-warning-orange);
  color: var(--color-white);
}

.btn-secondary:hover {
  background-color: #e67e00;
  text-decoration: none;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-secondary-blue);
  border: 2px solid var(--color-secondary-blue);
}

.btn-outline:hover {
  background-color: var(--color-secondary-blue);
  color: var(--color-white);
  text-decoration: none;
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.1rem;
}

.btn-block {
  display: block;
  width: 100%;
}

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

label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-dark-grey);
}

.required::after {
  content: " *";
  color: var(--color-error-red);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid #ddd;
  border-radius: var(--border-radius-md);
  font-family: var(--font-family-system);
  font-size: var(--font-size-body);
  transition: border-color var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-secondary-blue);
  box-shadow: 0 0 0 3px rgba(45, 110, 176, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  color: var(--color-error-red);
  font-size: var(--font-size-small);
  margin-top: var(--spacing-xs);
}

.form-success {
  color: var(--color-success-green);
  font-size: var(--font-size-small);
  margin-top: var(--spacing-xs);
}

/* Badges */
.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semibold);
}

.badge-primary {
  background-color: var(--color-secondary-blue);
  color: var(--color-white);
}

.badge-success {
  background-color: var(--color-success-green);
  color: var(--color-white);
}

.badge-warning {
  background-color: var(--color-warning-orange);
  color: var(--color-white);
}

/* Alerts */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-lg);
}

.alert-info {
  background-color: #e3f2fd;
  color: #1565c0;
  border-left: 4px solid #1565c0;
}

.alert-success {
  background-color: #e8f5e9;
  color: #2e7d32;
  border-left: 4px solid #2e7d32;
}

.alert-warning {
  background-color: #fff3e0;
  color: #e65100;
  border-left: 4px solid #e65100;
}

.alert-error {
  background-color: #ffebee;
  color: #c62828;
  border-left: 4px solid #c62828;
}

/* Breadcrumbs */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-small);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
}

.breadcrumb-item::after {
  content: "/";
  margin: 0 var(--spacing-xs);
  color: var(--color-medium-grey);
}

.breadcrumb-item:last-child::after {
  content: "";
  margin: 0;
}

.breadcrumb-item.active {
  color: var(--color-medium-grey);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-lg);
}

th, td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid #ddd;
}

th {
  background-color: var(--color-light-grey);
  font-weight: var(--font-weight-semibold);
}

tr:hover {
  background-color: var(--color-warm-grey);
}

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

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--color-medium-grey);
}

.text-small {
  font-size: var(--font-size-small);
}

.text-bold {
  font-weight: var(--font-weight-bold);
}

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

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

.hidden {
  display: none !important;
}

.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;
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --font-size-h1: 2rem;
    --font-size-h2: 1.75rem;
    --font-size-h3: 1.5rem;
    --font-size-h4: 1.25rem;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  section {
    padding: var(--spacing-xl) 0;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Focus Visible */
*:focus-visible {
  outline: 2px solid var(--color-secondary-blue);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-secondary-blue);
  outline-offset: 2px;
}