/* ==========================================================================
   Manulife AI - Corporate Design System (CDS) Integration
   Based on Manulife MUX Component Library tokens
   ========================================================================== */

/* ==========================================================================
   Google Fonts - Inter (similar to Manulife JH Sans)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap');


:root {
  /* ========== CDS Color Tokens ========== */

  /* Primary Colors */
  --cds-color-primary-main-default: #00A758;
  --cds-color-primary-main-dark-1: #008A47;
  --cds-color-primary-main-dark-2: #006E39;
  --cds-color-primary-main-light-4: #E8F5E9;

  /* Accent Colors */
  --cds-color-accent-default: #00A758;
  --cds-color-accent-dark-1: #008A47;
  --cds-color-accent-dark-2: #006E39;

  /* Secondary Colors */
  --cds-color-secondary-two-default: #FFD100;
  --cds-color-secondary-two-light-1: #FFE066;
  --cds-color-secondary-two-dark-1: #CCB000;

  /* Neutral Dark */
  --cds-color-neutral-dark-default: #282B3E;
  --cds-color-neutral-dark-light-1: #3D4157;
  --cds-color-neutral-dark-light-3: #6B6F82;
  --cds-color-neutral-dark-light-4: #8E91A0;
  --cds-color-neutral-dark-light-5: #B1B3BE;

  /* Neutral Light */
  --cds-color-neutral-light-light-3: #FFFFFF;
  --cds-color-neutral-light-light-2: #F7F7F8;
  --cds-color-neutral-light-light-1: #EDEDEF;
  --cds-color-neutral-light-default: #E4E4E7;
  --cds-color-neutral-light-dark-2: #C4C5CB;
  --cds-color-neutral-light-dark-3: #A4A6AF;

  /* Status Colors */
  --cds-color-status-error: #D03C3C;
  --cds-color-status-warning: #F5A623;
  --cds-color-status-success: #00A758;
  --cds-color-status-information: #0076D6;

  /* Special */
  --cds-color-super-dark-navy: #1A1D2E;
  --cds-color-white: #FFFFFF;
  --cds-color-red: #D03C3C;

  /* ========== CDS Typography Tokens ========== */

  /* Font Sizes */
  --cds-font-size-3xs: 0.625rem;
  /* 10px */
  --cds-font-size-2xs: 0.6875rem;
  /* 11px */
  --cds-font-size-xs: 0.8125rem;
  /* 13px */
  --cds-font-size-sm: 0.875rem;
  /* 14px */
  --cds-font-size-base: 1rem;
  /* 16px */
  --cds-font-size-lg: 1.125rem;
  /* 18px */
  --cds-font-size-xl: 1.25rem;
  /* 20px */
  --cds-font-size-2xl: 1.5rem;
  /* 24px */
  --cds-font-size-4xl: 1.75rem;
  /* 28px */
  --cds-font-size-6xl: 2rem;
  /* 32px */
  --cds-font-size-7xl: 2.25rem;
  /* 36px */
  --cds-font-size-8xl: 2.5rem;
  /* 40px */

  /* Font Weights */
  --cds-font-weight-light: 300;
  --cds-font-weight-regular: 400;
  --cds-font-weight-demibold: 600;
  --cds-font-weight-bold: 700;

  /* Line Heights */
  --cds-line-height-base: 1.4;
  --cds-line-height-sm: 1.25rem;
  --cds-line-height-lg: 1.375rem;
  --cds-line-height-xl: 1.5rem;
  --cds-line-height-2xl: 1.75rem;
  --cds-line-height-3xl: 2rem;
  --cds-line-height-4xl: 2.5rem;
  --cds-line-height-6xl: 3rem;

  /* ========== CDS Spacing Tokens ========== */
  --cds-spacing-1: 0.25rem;
  /* 4px */
  --cds-spacing-2: 0.5rem;
  /* 8px */
  --cds-spacing-3: 0.75rem;
  /* 12px */
  --cds-spacing-4: 1rem;
  /* 16px */
  --cds-spacing-5: 1.25rem;
  /* 20px */
  --cds-spacing-6: 1.5rem;
  /* 24px */
  --cds-spacing-7: 2rem;
  /* 32px */
  --cds-spacing-8: 2.5rem;
  /* 40px */

  /* ========== Layout Tokens ========== */
  --cds-layout-6: 2.75rem;

  /* ========== Custom Site Tokens ========== */
  --container-max: 1200px;
  --container-narrow: 800px;
  --radius-sm: 4px;
  --radius-md: 8px;
}

/* ==========================================================================
   Base Styles (CDS Aligned)
   ========================================================================== */

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

html {
  font-size: 16px;
  line-height: var(--cds-line-height-base);
}

body {
  margin: 0;
  padding: 0;
  font-family: Inter, "Manulife JH Sans", Helvetica, Arial, sans-serif;
  font-weight: var(--cds-font-weight-light);
  color: var(--cds-color-neutral-dark-light-1);
  background-color: var(--cds-color-neutral-light-light-3);
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--cds-spacing-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--cds-spacing-7);
  }
}

/* ==========================================================================
   Typography (CDS Aligned)
   ========================================================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 var(--cds-spacing-4);
  font-weight: var(--cds-font-weight-regular);
  line-height: var(--cds-line-height-base);
  color: var(--cds-color-neutral-dark-default);
}

h1 {
  font-size: var(--cds-font-size-7xl);
  line-height: var(--cds-line-height-4xl);
}

@media (min-width: 768px) {
  h1 {
    font-size: var(--cds-font-size-8xl);
    line-height: var(--cds-line-height-6xl);
  }
}

h2 {
  font-size: var(--cds-font-size-6xl);
  line-height: var(--cds-line-height-4xl);
  margin-top: var(--cds-spacing-7);
}

h3 {
  font-size: var(--cds-font-size-xl);
  line-height: var(--cds-line-height-2xl);
}

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

p {
  margin: 0 0 var(--cds-spacing-4);
  font-size: var(--cds-font-size-base);
  line-height: var(--cds-line-height-xl);
}

a {
  color: var(--cds-color-primary-main-dark-2);
  text-decoration: underline;
  text-decoration-color: var(--cds-color-primary-main-default);
  text-underline-offset: 2px;
}

a:hover,
a:focus {
  color: var(--cds-color-primary-main-dark-1);
  text-decoration-thickness: 2px;
  text-shadow: 0 .2px currentcolor, 0 -.2px currentcolor, .2px 0 currentcolor, -.2px 0 currentcolor;
}

a:focus-visible {
  outline: 2px solid transparent;
  box-shadow:
    inset 0 0 0 1px var(--cds-color-neutral-light-light-3),
    0 0 0 3px var(--cds-color-primary-main-dark-1),
    0 0 0 4px var(--cds-color-neutral-light-light-3);
}

ul,
ol {
  margin: 0 0 var(--cds-spacing-4);
  padding-left: var(--cds-spacing-6);
}

li {
  margin-bottom: var(--cds-spacing-2);
  line-height: var(--cds-line-height-xl);
}

strong,
b {
  font-weight: var(--cds-font-weight-demibold);
}

/* ==========================================================================
   Header (CDS Aligned)
   ========================================================================== */

.site-header {
  background-color: var(--cds-color-neutral-dark-default);
  padding: var(--cds-spacing-4) 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--cds-spacing-4);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--cds-spacing-3);
  color: var(--cds-color-neutral-light-light-3);
  font-weight: var(--cds-font-weight-demibold);
  font-size: var(--cds-font-size-xl);
  text-decoration: none;
}

.site-logo:hover {
  text-decoration: none;
  text-shadow: none;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  background-color: var(--cds-color-primary-main-default);
  color: var(--cds-color-neutral-light-light-3);
  border-radius: var(--radius-sm);
  font-weight: var(--cds-font-weight-bold);
}

.logo-image {
  height: 2rem;
  width: auto;
}

.logo-text {
  font-size: var(--cds-font-size-lg);
  font-weight: var(--cds-font-weight-demibold);
  color: var(--cds-color-neutral-light-light-3);
}

.site-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--cds-spacing-6);
}

.site-nav a {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--cds-font-size-sm);
  font-weight: var(--cds-font-weight-regular);
  padding: var(--cds-spacing-2) 0;
  border-bottom: 2px solid transparent;
  text-decoration: none;
  transition: color 0.2s, border-color 0.2s;
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--cds-color-neutral-light-light-3);
  text-shadow: 0 .2px currentcolor, 0 -.2px currentcolor, .2px 0 currentcolor, -.2px 0 currentcolor;
}

.site-nav a.active {
  color: var(--cds-color-neutral-light-light-3);
  border-bottom-color: var(--cds-color-primary-main-default);
}

/* ==========================================================================
   Footer (CDS Aligned)
   ========================================================================== */

.site-footer {
  margin-top: var(--cds-spacing-8);
  padding: var(--cds-spacing-5) 0;
  background-color: var(--cds-color-neutral-dark-default);
  color: var(--cds-color-neutral-light-dark-3);
  font-size: var(--cds-font-size-xs);
}

.site-footer .container {
  text-align: center;
}

.site-footer p {
  margin: 0;
}

/* ==========================================================================
   Main Content
   ========================================================================== */

main.container {
  padding-top: var(--cds-spacing-7);
  padding-bottom: var(--cds-spacing-7);
}

/* ==========================================================================
   Cards (CDS Aligned)
   ========================================================================== */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--cds-spacing-5);
  margin: var(--cds-spacing-5) 0;
}

.card {
  background: var(--cds-color-neutral-light-light-3);
  border: 1px solid var(--cds-color-neutral-light-default);
  padding: var(--cds-spacing-5);
  transition: box-shadow 0.2s;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.card h3 {
  margin-top: 0;
  margin-bottom: var(--cds-spacing-2);
  font-weight: var(--cds-font-weight-demibold);
  font-size: var(--cds-font-size-xl);
}

.card p {
  color: var(--cds-color-neutral-dark-light-3);
  font-size: var(--cds-font-size-base);
  margin-bottom: var(--cds-spacing-2);
}

.card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.card-link:hover {
  text-decoration: none;
  text-shadow: none;
}

.card-link:hover h3 {
  color: var(--cds-color-primary-main-dark-1);
}

/* ==========================================================================
   Domain Pages
   ========================================================================== */

.domain-header {
  margin-bottom: var(--cds-spacing-7);
  padding-bottom: var(--cds-spacing-5);
  border-bottom: 1px solid var(--cds-color-neutral-light-default);
}

.domain-blurb {
  font-size: var(--cds-font-size-lg);
  color: var(--cds-color-neutral-dark-light-3);
}

.domain-contact {
  font-size: var(--cds-font-size-sm);
  color: var(--cds-color-neutral-dark-light-3);
}

.domain-library,
.domain-collaborations {
  margin-top: var(--cds-spacing-7);
}

/* ==========================================================================
   Library (CDS Aligned)
   ========================================================================== */

.library-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.library-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--cds-spacing-3);
  padding: var(--cds-spacing-4) 0;
  border-bottom: 1px solid var(--cds-color-neutral-light-default);
}

.library-year {
  font-weight: var(--cds-font-weight-demibold);
  color: var(--cds-color-primary-main-default);
  min-width: 3rem;
}

.library-type {
  font-size: var(--cds-font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cds-color-neutral-dark-light-3);
  background: var(--cds-color-neutral-light-light-1);
  padding: var(--cds-spacing-1) var(--cds-spacing-2);
  border-radius: var(--radius-sm);
}

.library-venue {
  font-size: var(--cds-font-size-sm);
  color: var(--cds-color-neutral-dark-light-3);
  font-style: italic;
}

.library-header {
  margin-bottom: var(--cds-spacing-5);
}

.library-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cds-spacing-2);
  margin-bottom: var(--cds-spacing-2);
}

.library-org {
  color: var(--cds-color-neutral-dark-light-3);
  font-size: var(--cds-font-size-base);
}

.library-summary {
  font-size: var(--cds-font-size-lg);
  font-weight: var(--cds-font-weight-light);
  border-left: 3px solid var(--cds-color-primary-main-default);
  padding-left: var(--cds-spacing-4);
  margin: var(--cds-spacing-5) 0;
}

.library-links {
  display: flex;
  gap: var(--cds-spacing-4);
  margin-top: var(--cds-spacing-7);
}

.library-domains {
  margin-top: var(--cds-spacing-7);
  padding-top: var(--cds-spacing-5);
  border-top: 1px solid var(--cds-color-neutral-light-default);
}

.library-domains ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cds-spacing-2);
  list-style: none;
  padding: 0;
}

/* ==========================================================================
   Collaborations
   ========================================================================== */

.collab-list {
  list-style: none;
  padding: 0;
}

.collab-item {
  padding: var(--cds-spacing-5) 0;
  border-bottom: 1px solid var(--cds-color-neutral-light-default);
}

.collab-item strong {
  color: var(--cds-color-neutral-dark-default);
  font-weight: var(--cds-font-weight-demibold);
}

.collab-type,
.collab-years {
  font-size: var(--cds-font-size-sm);
  color: var(--cds-color-neutral-dark-light-3);
  margin-left: var(--cds-spacing-2);
}

.collab-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cds-spacing-2);
  list-style: none;
  padding: 0;
  margin-top: var(--cds-spacing-2);
}

/* ==========================================================================
   Open Source (CDS Aligned)
   ========================================================================== */

.oss-card {
  border-left: 3px solid var(--cds-color-primary-main-default);
}

.oss-status {
  font-size: var(--cds-font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--cds-spacing-1) var(--cds-spacing-2);
  border-radius: var(--radius-sm);
}

.oss-status.maintained {
  background: var(--cds-color-primary-main-light-4);
  color: var(--cds-color-primary-main-dark-1);
}

.oss-status.active {
  background: #E3F2FD;
  color: #1565C0;
}

.oss-status.archived {
  background: var(--cds-color-neutral-light-light-1);
  color: var(--cds-color-neutral-dark-light-3);
}

.oss-meta {
  font-size: var(--cds-font-size-sm);
  color: var(--cds-color-neutral-dark-light-3);
  margin-top: var(--cds-spacing-2);
}

/* ==========================================================================
   Buttons (CDS Aligned)
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: Inter, "Manulife JH Sans", Helvetica, Arial, sans-serif;
  font-size: 1.1875rem;
  font-weight: var(--cds-font-weight-bold);
  line-height: var(--cds-line-height-xl);
  padding: var(--cds-spacing-3) var(--cds-spacing-5);
  border-radius: 0;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
}

.btn:focus-visible {
  outline: 2px solid transparent;
  box-shadow:
    inset 0 0 0 1px var(--cds-color-neutral-light-light-3),
    0 0 0 3px var(--cds-color-primary-main-dark-1),
    0 0 0 4px var(--cds-color-neutral-light-light-3);
}

.btn-primary {
  background-color: var(--cds-color-accent-default);
  border: 2px solid var(--cds-color-accent-default);
  color: var(--cds-color-neutral-light-light-3);
}

.btn-primary:hover {
  background-color: var(--cds-color-accent-dark-1);
  border-color: var(--cds-color-accent-dark-1);
  text-decoration: none;
  text-shadow: none;
}

.btn-primary:active {
  background-color: var(--cds-color-accent-dark-2);
  border-color: var(--cds-color-accent-dark-2);
}

.btn-secondary {
  background-color: var(--cds-color-neutral-light-light-3);
  border: 2px solid var(--cds-color-accent-default);
  color: var(--cds-color-neutral-dark-default);
}

.btn-secondary:hover {
  background-color: var(--cds-color-accent-dark-1);
  border-color: var(--cds-color-accent-dark-1);
  color: var(--cds-color-neutral-light-light-3);
  text-decoration: none;
  text-shadow: none;
}

/* ==========================================================================
   Callouts (CDS Aligned)
   ========================================================================== */

.callout {
  background: var(--cds-color-neutral-light-light-1);
  border-left: 3px solid var(--cds-color-neutral-dark-default);
  padding: var(--cds-spacing-5);
  margin: var(--cds-spacing-5) 0;
}

.callout h3 {
  margin-top: 0;
}

.callout ul {
  margin-bottom: 0;
}

/* ==========================================================================
   Horizontal Rules
   ========================================================================== */

hr {
  border: none;
  border-top: 1px solid var(--cds-color-neutral-light-default);
  margin: var(--cds-spacing-7) 0;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav ul {
    flex-wrap: wrap;
    gap: var(--cds-spacing-4);
  }

  .library-item {
    flex-direction: column;
    align-items: flex-start;
  }

  h1 {
    font-size: var(--cds-font-size-6xl);
  }

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