/* AccessCMS Design System - Extracted from identity.cms.gov */

/* ========================================
   CSS Variables / Design Tokens
   Extracted from identity.cms.gov
   ======================================== */
:root {
  /* Colors - Primary CMS Brand */
  --cms-blue: #2378C3;
  --cms-dark-blue: #395273;
  --cms-light-blue: #5994F6;
  --cms-pale-blue: #D4E5FF;
  --cms-sky-blue: #C1D8ED;
  --cms-azure: #7AA9F8;

  /* Colors - Legacy Support */
  --color-primary: #2378C3;
  --color-primary-dark: #395273;
  --color-navy: #395273;
  --color-dark: #1F303E;

  /* Colors - Status */
  --color-success: #00a91c;
  --security-green: #719F2A;
  --color-error: #b50909;

  /* Colors - Neutral */
  --color-white: #FFF;
  --color-off-white: #FCFCFB;
  --color-light-gray: #F4F4F4;
  --color-gray: #757575;
  --color-dark-gray: #383838;
  --color-near-black: #292A2E;
  --color-black: #000;
  --color-darker-blue: #1F303E;

  /* Colors - Background */
  --color-bg-primary: #FFF;
  --color-bg-secondary: #F4F4F4;
  --color-bg-tertiary: #D4E5FF;
  --color-bg-light: #FCFCFB;

  /* Typography - Extracted from identity.cms.gov */
  --font-primary: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-secondary: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 24px;
  --font-size-xl: 32px;
  --font-size-2xl: 48px;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing - Extracted from identity.cms.gov */
  --space-xs: 14px;
  --space-sm: 20px;
  --space-md: 23px;
  --space-lg: 33px;
  --space-xl: 49px;
  --space-2xl: 56px;

  /* Legacy spacing (for compatibility) */
  --spacing-xs: 14px;
  --spacing-sm: 20px;
  --spacing-md: 23px;
  --spacing-lg: 33px;
  --spacing-xl: 49px;
  --spacing-2xl: 56px;
  --spacing-3xl: 72px;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  /* Breakpoints */
  --breakpoint-mobile: 480px;
  --breakpoint-tablet: 640px;
  --breakpoint-desktop: 1024px;
  --breakpoint-wide: 1240px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-normal);
  line-height: 1.5;
  color: var(--color-gray-dark);
  background-color: var(--color-bg-primary);
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-dark);
}

h1 {
  font-size: 2.5rem;
}

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);
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

a:visited {
  color: var(--color-navy);
}

/* ========================================
   Layout Utilities
   ======================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.grid-container {
  display: grid;
  gap: var(--spacing-lg);
}

.flex {
  display: flex;
}

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

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

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

/* ========================================
   Component: Buttons
   ======================================== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
}

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

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

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

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========================================
   Component: Cards
   ======================================== */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  padding: var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-gray-light);
}

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

.card-footer {
  padding: var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-gray-light);
}

/* ========================================
   Component: Navigation
   ======================================== */
.navbar {
  position: sticky;
  top: 0;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-light);
  z-index: 1000;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-link {
  padding: var(--spacing-md);
  text-decoration: none;
  color: var(--color-gray-dark);
  transition: color var(--transition-fast);
}

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

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

.alert-success {
  background-color: #d1e7dd;
  color: #0a5c36;
  border: 1px solid #a3cfbb;
}

.alert-error {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.alert-warning {
  background-color: #fff3cd;
  color: #856404;
  border: 1px solid #ffeeba;
}

.alert-info {
  background-color: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark);
}

.form-input {
  width: 100%;
  padding: 0.75rem;
  font-family: var(--font-primary);
  font-size: 1rem;
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 80, 216, 0.1);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 640px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }

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

@media (min-width: 640px) {
  .grid-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-container {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.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-0 { margin-bottom: 0; }
.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-0 { padding: 0; }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }