/* ============================================================
   STYLE.CSS — Libre Scholars Design System
   ============================================================ */

@font-face {
  font-family: 'Source Sans 3';
  src: url('fonts/webfonts/source-sans-3-latin-300-normal.woff2') format('woff2');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Source Sans 3';
  src: url('fonts/webfonts/source-sans-3-latin-400-normal.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Source Sans 3';
  src: url('fonts/webfonts/source-sans-3-latin-600-normal.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Source Sans 3';
  src: url('fonts/webfonts/source-sans-3-latin-700-normal.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Source Sans 3';
  src: url('fonts/webfonts/source-sans-3-latin-300-italic.woff2') format('woff2');
  font-weight: 300;
  font-style: italic;
  font-display: swap;
}

:root {
  --harbor:       #365A7A;
  --blue:         #3B82F6;
  --sunrise:      #F4D35E;
  --white:        #FAFBFC;
  --text:         #1E293B;
  --muted:        #4A5568;
  --border:       #E2E8F0;
  --surface:      #F1F5F9;
  --harbor-light: #EBF1F7;
  --blue-dark:    #2563EB;
  --blue-light:   #DBEAFE;

  --font-base: 'Source Sans 3', system-ui, sans-serif;

  --text-xs:   0.875rem;
  --text-sm:   1rem;
  --text-base: 1.0625rem;
  --text-lg:   1.1875rem;
  --text-xl:   1.375rem;
  --text-2xl:  1.625rem;
  --text-3xl:  2rem;
  --text-4xl:  2.5rem;
  --text-5xl:  clamp(2.75rem, 5vw, 3.75rem);

  --weight-light:    300;
  --weight-regular:  400;
  --weight-semibold: 600;
  --weight-bold:     700;

  --leading-tight:   1.3;
  --leading-snug:    1.425;
  --leading-normal:  1.55;
  --leading-relaxed: 1.7;

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --container-xl:  1140px;
  --container-sm:  640px;
  --container-md:  768px;
  --container-lg:  1024px;
  --container-2xl: 1400px;

  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-2xl:  1.5rem;
  --radius-full: 9999px;

  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 20px -4px rgb(0 0 0 / 0.09);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08);

  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  --header-h: 5rem;
}

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

html {
  font-size: 17.5px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-base);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-relaxed);
  color: var(--text);
  background-color: var(--white);
  min-height: 100vh;
}

img, video, svg { display: block; max-width: 100%; }
a   { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

/* Every section with an id used as a nav target needs this  */
[id] { scroll-margin-top: var(--header-h); }

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--harbor);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p { line-height: var(--leading-relaxed); color: var(--text); }
p + p { margin-top: var(--space-4); }

.lead { font-size: var(--text-xl); color: var(--muted); }

a.link, .content a {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}
a.link:hover, .content a:hover { color: var(--blue-dark); }

/* Sunrise underline accent  */
.accent {
  position: relative;
  display: inline-block;
  white-space: nowrap;
}
.accent::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 3px;
  background: var(--sunrise);
  border-radius: var(--radius-full);
}

/* Thicker accent variant for large hero headings */
.accent--lg::after {
  height: 4px;
  bottom: -4px;
}

/* Eyebrow label */
.eyebrow {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--harbor);
}

/* On dark Harbor backgrounds */
.eyebrow--inverted { color: rgba(250, 251, 252, 0.75); }

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--sm  { max-width: var(--container-sm); }
.container--md  { max-width: var(--container-md); }
.container--lg  { max-width: var(--container-lg); }
.container--2xl { max-width: var(--container-2xl); }

.section          { padding-block: var(--space-20); }
.section--sm      { padding-block: var(--space-12); }
.section--surface { background-color: var(--surface); }

/* Section header block */
.section-head {
  text-align: center;
  max-width: 42rem;
  margin-inline: auto;
  margin-bottom: var(--space-16);
}
.section-head .eyebrow         { justify-content: center; margin-bottom: var(--space-4); }
.section-head h2               { margin-bottom: var(--space-4); }
.section-head p                { font-size: var(--text-lg); color: var(--muted); }

/* Sunrise divider */
.divider--sunrise {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.divider--sunrise::before,
.divider--sunrise::after       { content: ''; flex: 1; height: 1px; background: var(--border); }
.divider--sunrise__dot         { width: 8px; height: 8px; border-radius: var(--radius-full); background: var(--sunrise); flex-shrink: 0; }

/* Site header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  height: var(--header-h);
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* Logo */
.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--harbor);
  letter-spacing: -0.02em;
  line-height: 1;
  transition: opacity var(--transition-fast);
}
.site-header__logo:hover { opacity: 0.8; }

.site-header__logo img {
  height: 4rem;
  width: auto;
  flex-shrink: 0;
}

/* Sunrise underline on the logo wordmark */
.site-header__logo-name {
  position: relative;
}
.site-header__logo-name::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--sunrise);
  border-radius: var(--radius-full);
  opacity: 0.7;
}

/* Nav */
.site-nav { display: flex; align-items: center; gap: var(--space-1); }

.site-nav__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--muted);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}
.site-nav__link:hover,
.site-nav__link--active { color: var(--harbor); background-color: var(--harbor-light); }

.site-nav__cta {
  margin-left: var(--space-2);
  background-color: var(--blue);
  color: #fff;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: var(--weight-semibold);
  font-size: var(--text-sm);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  transition: background-color var(--transition-fast);
}
.site-nav__cta:hover { background-color: var(--blue-dark); }

/* Mobile toggle */
.site-header__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--harbor);
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}
.site-header__toggle:hover { background-color: var(--harbor-light); }
.site-header__hamburger { display: flex; flex-direction: column; gap: 5px; }
.site-header__hamburger span { display: block; width: 22px; height: 2px; background: var(--harbor); border-radius: 2px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-base);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: 1;
  min-height: 48px;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  letter-spacing: 0.01em;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
}
.btn:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.btn:active        { transform: translateY(1px); }
.btn:disabled      { opacity: 0.45; cursor: not-allowed; pointer-events: none; }

.btn--primary   { background-color: var(--blue);  color: #fff; border-color: var(--blue); }
.btn--primary:hover { background-color: var(--blue-dark); border-color: var(--blue-dark); box-shadow: var(--shadow-md); }

.btn--secondary { background-color: transparent; color: var(--harbor); border-color: var(--harbor); }
.btn--secondary:hover { background-color: var(--harbor-light); }

.btn--ghost     { background-color: transparent; color: var(--blue); border-color: transparent; }
.btn--ghost:hover { background-color: var(--blue-light); }

.btn--white     { background-color: var(--white); color: var(--harbor); border-color: var(--white); }
.btn--white:hover { opacity: 0.9; }

.btn--outline-white { background-color: transparent; color: var(--white); border-color: rgba(250,251,252,0.45); }
.btn--outline-white:hover { border-color: rgba(250,251,252,0.85); }

.btn--sm { padding: var(--space-2) var(--space-4); font-size: var(--text-sm); border-radius: var(--radius-md); min-height: 44px; }
.btn--lg { padding: var(--space-5) var(--space-10); font-size: var(--text-lg); border-radius: var(--radius-xl); }
.btn--full { width: 100%; }

/* Cards */
.card {
  background-color: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: #CBD5E1;
}
.card--accented { border-top: 3px solid var(--sunrise); }
.card--surface  { background-color: var(--surface); border-color: transparent; }

/* Card icon wrap */
.card__icon-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--harbor-light);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
  color: var(--harbor);
}
/* Bottom sunrise bar replaces the dot */
.card__icon-wrap::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--sunrise);
  border-radius: var(--radius-full);
}

.card__title { font-size: var(--text-xl); font-weight: var(--weight-bold); color: var(--harbor); margin-bottom: var(--space-3); margin-top: var(--space-4); }
.card__body  { font-size: var(--text-base); color: var(--muted); line-height: var(--leading-relaxed); }

/* Forms */
.form-group                { display: flex; flex-direction: column; gap: var(--space-2); }
.form-group + .form-group  { margin-top: var(--space-5); }
.form-label                { font-size: var(--text-sm); font-weight: var(--weight-semibold); color: var(--text); }
.form-label--required::after { content: ' *'; color: var(--blue); }

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  font-family: var(--font-base);
  font-size: var(--text-base);
  color: var(--text);
  background-color: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  min-height: 48px;
  outline: none;
  line-height: var(--leading-normal);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--muted); opacity: 0.6; }
.form-input:hover, .form-select:hover, .form-textarea:hover { border-color: #CBD5E1; }
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
}
.form-textarea { resize: vertical; min-height: 8rem; }
.form-hint  { font-size: var(--text-xs); color: var(--muted); }
.form-error { font-size: var(--text-xs); color: #EF4444; }

/* Badges */
.badge {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: 0.2em var(--space-3);
  font-size: var(--text-xs); font-weight: var(--weight-semibold);
  letter-spacing: 0.03em; border-radius: var(--radius-full); line-height: 1.5;
}
.badge--blue    { background-color: var(--blue-light); color: var(--blue-dark); }
.badge--harbor  { background-color: var(--harbor-light); color: var(--harbor); }
.badge--sunrise { background-color: rgba(244,211,94,0.2); color: #92680B; }

/* Callout */
.callout {
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--blue);
  background-color: var(--blue-light);
  display: flex; gap: var(--space-4); align-items: flex-start;
}
.callout--sunrise { border-left-color: var(--sunrise); background-color: rgba(244,211,94,0.12); }
.callout__text    { font-size: var(--text-base); color: var(--text); line-height: var(--leading-relaxed); }

/* Site footer */
.site-footer {
  background-color: var(--harbor);
  padding: var(--space-16) var(--space-6) var(--space-8);
}
.site-footer__accent {
  height: 3px;
  background: linear-gradient(90deg, var(--sunrise) 0%, transparent 60%);
  opacity: 0.6;
  margin-bottom: var(--space-12);
}
.site-footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  max-width: var(--container-xl);
  margin-inline: auto;
}
.site-footer__brand .site-header__logo { color: var(--white); font-size: var(--text-xl); }
.site-footer__brand .site-header__logo-name::after { opacity: 0.5; }
.site-footer__tagline { margin-top: var(--space-4); font-size: var(--text-sm); color: rgba(250,251,252,0.55); line-height: var(--leading-relaxed); max-width: 18rem; }

.site-footer__col h4 { font-size: var(--text-sm); font-weight: var(--weight-bold); letter-spacing: 0.08em; text-transform: uppercase; color: var(--white); margin-bottom: var(--space-5); }
.site-footer__col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.site-footer__col a  { font-size: var(--text-sm); color: rgba(250,251,252,0.6); transition: color var(--transition-fast); }
.site-footer__col a:hover { color: var(--white); }

.site-footer__bottom {
  max-width: var(--container-xl);
  margin-inline: auto;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(250,251,252,0.12);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: rgba(250,251,252,0.45);
}

/* Override global p color inside footer bottom */
.site-footer__bottom p {
  color: rgba(250,251,252,0.45);
  line-height: 1;
  margin: 0;
}

/* Utilities */
.mt-auto { margin-top: auto; }
.mx-auto { margin-inline: auto; }
.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; }

/* Focus */
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.skip-link {
  position: absolute; top: -100%; left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background-color: var(--blue); color: #fff;
  font-size: var(--text-sm); font-weight: var(--weight-semibold);
  border-radius: var(--radius-md); z-index: 200;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-4); }

/* Responsive */
@media (max-width: 1024px) {
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}

@media (max-width: 900px) {
  .site-header__inner { padding-inline: var(--space-4); }
  .site-nav { display: none; }
  .site-nav.is-open {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: var(--header-h); left: 0; right: 0;
    background-color: var(--white); border-bottom: 1px solid var(--border);
    padding: var(--space-4); box-shadow: var(--shadow-md); gap: var(--space-1);
  }
  .site-nav.is-open .site-nav__cta { margin-left: 0; margin-top: var(--space-2); }
  .site-header__toggle { display: inline-flex; }
}

@media (max-width: 768px) {
  .section { padding-block: var(--space-12); }
  .site-footer__inner  { grid-template-columns: 1fr; gap: var(--space-8); }
  .site-footer__bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  :root { --text-5xl: 2.25rem; --text-4xl: 1.875rem; --text-3xl: 1.625rem; }
  .container { padding-inline: var(--space-4); }
  .card { padding: var(--space-6); border-radius: var(--radius-xl); }
}

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

@media print {
  .site-header, .site-footer, .btn { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
}