/* ============================================================
   multiprovider.cloud — Accessible Theme
   WCAG 2.2 AA target (AAA on body text contrast)
   Fonts: Atkinson Hyperlegible (body), Inclusive Sans (headings)
   ============================================================ */

/* --- Google Fonts import --- */
@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:ital,wght@0,400;0,700;1,400;1,700&family=Inclusive+Sans:ital@0;1&display=swap');

/* --- Design Tokens --- */
:root {
  /* Color: dark-on-light, AAA-compliant body text (≥7:1) */
  --color-bg:           #FFFFFF;
  --color-surface:      #F4F4F4;
  --color-surface-alt:  #E8EDF2;
  --color-text:         #111111;      /* 18.1:1 on white */
  --color-text-muted:   #444444;      /* 9.7:1 on white */
  --color-accent:       #0057A8;      /* HPL blue; 7.2:1 on white — AAA */
  --color-accent-hover: #003D7A;
  --color-cta:          #005F30;      /* deep green; 8.1:1 on white */
  --color-cta-hover:    #004020;
  --color-border:       #CCCCCC;
  --color-focus:        #FF6B00;      /* high-vis focus ring */

  /* Typography */
  --font-body:    'Atkinson Hyperlegible', Arial, sans-serif;
  --font-heading: 'Inclusive Sans', Arial, sans-serif;

  /* Scale (fluid, rem-based) */
  --text-xs:   0.875rem;   /* 14px */
  --text-sm:   1rem;       /* 16px */
  --text-base: 1.125rem;   /* 18px — body minimum */
  --text-lg:   1.375rem;   /* 22px */
  --text-xl:   1.75rem;    /* 28px */
  --text-2xl:  2.25rem;    /* 36px */
  --text-3xl:  3rem;       /* 48px */

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  /* Layout */
  --max-width: 72rem;
  --radius:    0.375rem;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%; /* respect user browser font-size preference */
  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* WCAG 1.4.12 — text spacing must not break layout */
body {
  word-spacing: 0.16em;
  letter-spacing: 0.01em;
}

/* --- Skip Navigation (WCAG 2.4.1) --- */
.skip-nav {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 9999;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-accent);
  color: #FFFFFF;
  font-weight: 700;
  font-size: var(--text-sm);
  border-radius: var(--radius);
  text-decoration: none;
  transition: top 0.1s;
}
.skip-nav:focus {
  top: var(--space-sm);
}

/* --- Focus Styles (WCAG 2.4.7 / 2.4.11) --- */
:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--space-sm);
  max-width: 68ch; /* optimal line length for readability */
  line-height: 1.7;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
a:hover {
  color: var(--color-accent-hover);
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.section {
  padding-block: var(--space-xl);
}

.section--alt {
  background-color: var(--color-surface);
}

.section--dark {
  background-color: #0A1628;
  color: #F0F4F8;
}
.section--dark h2,
.section--dark h3,
.section--dark p {
  color: #F0F4F8;
}

/* --- Navigation --- */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: var(--space-sm);
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}
.nav-logo:hover { color: var(--color-accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-xs) 0;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--color-text);
  border-radius: var(--radius);
  padding: var(--space-xs);
  cursor: pointer;
  font-size: var(--text-sm);
  font-family: var(--font-body);
  color: var(--color-text);
}

@media (max-width: 48rem) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    padding-block: var(--space-sm);
    gap: var(--space-xs);
  }
  .nav-links.is-open { display: flex; }
  .nav-inner { flex-wrap: wrap; }
}

/* --- Hero Section --- */
.hero {
  background-color: #0A1628;
  color: #F0F4F8;
  padding-block: var(--space-2xl);
  text-align: center;
}

.hero__eyebrow {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7EB8F7;
  margin-bottom: var(--space-sm);
}

.hero__headline {
  font-size: clamp(2rem, 5vw, var(--text-3xl));
  color: #FFFFFF;
  margin-bottom: var(--space-md);
  max-width: 18ch;
  margin-inline: auto;
}

.hero__sub {
  font-size: var(--text-lg);
  color: #C8D8E8;
  max-width: 52ch;
  margin-inline: auto;
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.hero__cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius);
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}

.btn--primary {
  background-color: var(--color-cta);
  color: #FFFFFF;
  border-color: var(--color-cta);
}
.btn--primary:hover {
  background-color: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
  color: #FFFFFF;
}

.btn--secondary {
  background-color: transparent;
  color: #FFFFFF;
  border-color: #FFFFFF;
}
.btn--secondary:hover {
  background-color: rgba(255,255,255,0.1);
  color: #FFFFFF;
}

.btn--outline {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn--outline:hover {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

/* --- Section 2: What This Is — 3-column cards --- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-lg);
}

.card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
  display: block;
  /* Icons are decorative; aria-hidden on the element */
}

.card__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-xs);
}

.card__body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: none;
}

/* --- Section 3: Pricing --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.pricing-card {
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-lg);
}

.pricing-card--featured {
  border-color: var(--color-accent);
  background-color: #EEF4FF;
}

.pricing-card__label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.pricing-card__price {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.pricing-card__desc {
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  max-width: none;
}

/* --- Section 4: Free Really? / Newsletter --- */
.newsletter-block {
  max-width: 44rem;
  margin-inline: auto;
  text-align: center;
}

.newsletter-block p {
  max-width: none;
  margin-inline: auto;
}

.newsletter-form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-top: var(--space-md);
}

.newsletter-form label {
  display: block;
  font-weight: 700;
  font-size: var(--text-sm);
  margin-bottom: var(--space-xs);
  text-align: left;
}

.newsletter-form__field {
  display: flex;
  flex-direction: column;
  flex: 1 1 16rem;
}

.newsletter-form input[type="email"] {
  font-family: var(--font-body);
  font-size: var(--text-base);
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  background: var(--color-bg);
  width: 100%;
}
.newsletter-form input[type="email"]:focus-visible {
  border-color: var(--color-accent);
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

/* --- Footer --- */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-lg);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* --- Accessibility Toolbar --- */
.a11y-bar {
  background-color: #0A1628;
  padding: var(--space-xs) var(--space-md);
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
}

.a11y-bar__label {
  color: #C8D8E8;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.a11y-btn {
  background: none;
  border: 1px solid #4A6A8A;
  color: #C8D8E8;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius);
  cursor: pointer;
}
.a11y-btn:hover,
.a11y-btn[aria-pressed="true"] {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #FFFFFF;
}

/* --- High Contrast Mode --- */
body.high-contrast {
  --color-bg: #000000;
  --color-surface: #111111;
  --color-text: #FFFFFF;
  --color-text-muted: #DDDDDD;
  --color-accent: #66B3FF;
  --color-border: #666666;
}

/* --- Large Text Mode --- */
body.large-text {
  --text-base: 1.375rem;
  --text-lg:   1.625rem;
  --text-xl:   2rem;
  --text-2xl:  2.75rem;
  --text-3xl:  3.5rem;
}

/* --- Responsive --- */
@media (max-width: 48rem) {
  .hero { padding-block: var(--space-xl); }
  h1 { font-size: var(--text-2xl); }
  h2 { font-size: var(--text-xl); }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}