/* ==========================================================================
   IRC Core Stylesheet
   1. Reset            6. Buttons          11. Overlays (modal/toast/lightbox)
   2. Base elements    7. Forms            12. Tables (admin)
   3. Type utilities   8. Cards            13. Motion & scroll effects
   4. Layout utilities 9. Badges/Tags      14. Timeline
   5. A11y utilities   10. Navbar/Footer   15. Misc widgets (search, stats)
   ========================================================================== */

/* 1. Reset ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body { min-height: 100vh; }
img, picture, svg, video { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
table { border-collapse: collapse; width: 100%; }

/* The HTML `hidden` attribute must always win: without this, any component
   rule that sets its own `display` (.btn, .admin-login, .admin-app, ...)
   ties with the UA stylesheet's [hidden]{display:none} on specificity, and
   source order lets the component rule silently defeat `el.hidden = true`. */
[hidden] { display: none !important; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* 2. Base elements ---------------------------------------------------------- */
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background: var(--color-bg);
  transition: background-color var(--duration-base) var(--ease-standard), color var(--duration-base) var(--ease-standard);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}
h1 { font-size: var(--font-size-5xl); letter-spacing: -0.03em; }
h2 { font-size: var(--font-size-4xl); letter-spacing: -0.03em; }
h3 { font-size: var(--font-size-3xl); letter-spacing: -0.02em; }
h4 { font-size: var(--font-size-2xl); letter-spacing: -0.01em; }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p { color: var(--color-text-secondary); text-wrap: pretty; }

::selection { background: var(--color-primary); color: var(--color-primary-contrast); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--color-bg-alt); }
::-webkit-scrollbar-thumb { background: var(--gray-400); border-radius: var(--radius-pill); }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: var(--navy-600); }

/* Focus visibility — never remove without replacing */
:focus { outline: none; }
:focus-visible {
  outline: 2.5px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* 3. Typography utilities ---------------------------------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--radius-pill);
}
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
[data-theme="dark"] .text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.balance { text-wrap: balance; }

/* 4. Layout utilities --------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}
.container--narrow { max-width: var(--container-narrow); }

/* Any element can be a URL-hash / anchor-link jump target (search results,
   deep links, subnav pills); the sticky header would otherwise cover the
   top of whatever scrolls into view. */
[id] { scroll-margin-top: calc(var(--header-height) + 24px); }

.section { padding-block: var(--space-10); position: relative; }
.section--tight { padding-block: var(--space-8); }
.section--alt { background: var(--color-bg-alt); }

.section-header {
  max-width: 720px;
  margin-bottom: var(--space-7);
}
.section-header.center { margin-inline: auto; text-align: center; }
.section-header h2 { margin-top: var(--space-3); }
.section-header p { margin-top: var(--space-4); font-size: var(--font-size-md); }
.section-header__row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }

.grid { display: grid; gap: var(--space-6); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--auto-sm { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
@media (max-width: 980px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

.mt-2 { margin-top: var(--space-2); } .mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); } .mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); } .mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }

/* 5. Accessibility utilities --------------------------------------------------- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed;
  top: -60px;
  left: var(--space-4);
  z-index: 1000;
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  transition: top var(--duration-fast) var(--ease-out);
}
.skip-link:focus { top: var(--space-4); }

/* 5b. Icon sprite defaults ------------------------------------------------------ */
.icon {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

/* 6. Buttons ------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: transform var(--duration-fast) var(--ease-spring),
              box-shadow var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
  border: 1.5px solid transparent;
  user-select: none;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn:hover { transform: translateY(-3px); }
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: 0 4px 18px 0 rgba(124, 58, 237, 0.45);
}
.btn--primary:hover {
  background: var(--gradient-accent);
  box-shadow: 0 6px 24px rgba(124, 58, 237, 0.55);
}

.btn--secondary {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.btn--secondary:hover { border-color: var(--accent-violet); color: var(--accent-violet); box-shadow: 0 6px 20px rgba(124, 58, 237, 0.15); }

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
  backdrop-filter: var(--backdrop-blur);
}
.btn--outline:hover { background: rgba(255, 255, 255, 0.1); border-color: #fff; }

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
}
.btn--ghost:hover { background: var(--color-primary-soft); }

.btn--sm { padding: 0.6rem 1.2rem; font-size: var(--font-size-sm); }
.btn--lg { padding: 1.05rem 2.1rem; font-size: var(--font-size-md); }
.btn--block { width: 100%; }
.btn:disabled { opacity: 0.55; pointer-events: none; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-pill);
  color: var(--color-text-primary);
  transition: background-color var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
}
.icon-btn:hover { background: var(--color-primary-soft); color: var(--color-primary); }
.icon-btn svg { width: 20px; height: 20px; }

/* 7. Forms --------------------------------------------------------------------- */
.form-grid { display: grid; gap: var(--space-5); }
.form-field { display: flex; flex-direction: column; gap: var(--space-2); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}
.form-label .required { color: var(--color-danger); }

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  transition: border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--color-text-muted); }
.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-soft);
}
.form-textarea { resize: vertical; min-height: 140px; }
.form-hint { font-size: var(--font-size-xs); color: var(--color-text-muted); }
.form-error { font-size: var(--font-size-xs); color: var(--color-danger); display: none; }
.form-field.has-error .form-input,
.form-field.has-error .form-textarea { border-color: var(--color-danger); }
.form-field.has-error .form-error { display: block; }

.form-checkbox { display: flex; align-items: flex-start; gap: var(--space-3); font-size: var(--font-size-sm); color: var(--color-text-secondary); }
.form-checkbox input { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--color-primary); flex-shrink: 0; }

.newsletter-form {
  display: flex;
  gap: var(--space-2);
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border-glass);
  padding: var(--space-2);
  border-radius: var(--radius-pill);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
}
.newsletter-form input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 0.7rem 1rem;
  color: inherit;
  font-size: var(--font-size-sm);
}
.newsletter-form input::placeholder { color: var(--color-text-muted); }
.newsletter-form input:focus { outline: none; }
.newsletter-form button { flex-shrink: 0; }

/* 8. Cards ----------------------------------------------------------------------- */
.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-base) var(--ease-spring),
              box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
}
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--color-primary-soft); }

.card--glass {
  background: var(--color-bg-glass);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--color-border-glass);
}

.card--flat:hover { transform: none; box-shadow: var(--shadow-sm); }

/* 9. Badges & tags ----------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
  background: var(--color-primary-soft);
  color: var(--color-primary);
}
.badge--success { background: var(--color-success-soft); color: var(--color-success); }
.badge--warning { background: var(--color-warning-soft); color: var(--color-warning); }
.badge--danger { background: var(--color-danger-soft); color: var(--color-danger); }
.badge--neutral { background: var(--gray-100); color: var(--gray-700); }
[data-theme="dark"] .badge--neutral { background: rgba(255,255,255,0.08); color: var(--gray-300); }
.badge--outline { background: transparent; border: 1px solid currentColor; }

.tag-filter-group { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.tag-filter {
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  background: var(--color-bg-elevated);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}
.tag-filter:hover { border-color: var(--color-primary); color: var(--color-primary); }
.tag-filter.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 8px 18px -6px rgba(29, 95, 214, 0.5);
}

/* 10. Navbar ---------------------------------------------------------------------- */
/* The glass background lives on a ::before, not on .site-header itself: a
   backdrop-filter on the header would make it a CSS containing block for
   any position:fixed descendant (the mobile nav overlay), which silently
   breaks that overlay's viewport-relative positioning. Keeping the filter
   one level removed (on the pseudo-element) avoids that gotcha entirely. */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  border-bottom: 1px solid var(--color-border-glass);
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--color-bg-glass);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  transition: background-color var(--duration-base) var(--ease-standard);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: var(--header-height);
  max-width: 1480px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 3vw, 2.5rem);
}
.site-header__brand { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }
.site-header__logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 3px;
  box-shadow: var(--shadow-sm);
}
.site-header__wordmark { display: flex; flex-direction: column; line-height: 1.15; font-size: 0.95rem; color: var(--color-text-primary); }
.site-header__wordmark small { font-weight: var(--font-weight-medium); color: var(--color-text-muted); font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; }
.site-header__wordmark strong { font-weight: var(--font-weight-bold); font-size: 1rem; }

.site-nav__list { display: flex; align-items: center; gap: 2px; }
.site-nav__link {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 0.55rem 0.6rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  white-space: nowrap;
  transition: color var(--duration-fast), background-color var(--duration-fast);
}
.site-nav__link svg { width: 14px; height: 14px; transition: transform var(--duration-fast) var(--ease-out); }
.site-nav__item:hover .site-nav__link,
.site-nav__link.is-active { color: var(--color-primary); background: var(--color-primary-soft); }
.site-nav__item.active-parent > .site-nav__link { color: var(--color-primary); }

.site-nav__item { position: relative; }
.site-nav__item.has-dropdown:hover .site-nav__link svg,
.site-nav__item.has-dropdown:focus-within .site-nav__link svg { transform: rotate(180deg); }
.site-nav__dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 240px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity var(--duration-fast) var(--ease-out),
              visibility var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}
.site-nav__item.has-dropdown:hover .site-nav__dropdown,
.site-nav__item.has-dropdown:focus-within .site-nav__dropdown,
.site-nav__item.has-dropdown.is-expanded .site-nav__dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.site-nav__dropdown a {
  display: flex;
  flex-direction: column;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}
.site-nav__dropdown a span { font-weight: var(--font-weight-regular); color: var(--color-text-muted); font-size: 0.78rem; margin-top: 2px; }
.site-nav__dropdown a:hover { background: var(--color-primary-soft); color: var(--color-primary); }

.site-header__actions { display: flex; align-items: center; gap: var(--space-2); }
.pwa-install-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: linear-gradient(135deg, var(--accent-indigo), var(--accent-blue));
  border: none;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
  transition: transform var(--duration-fast) var(--ease-spring), box-shadow var(--duration-fast);
}
.pwa-install-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}
.pwa-install-btn svg { width: 15px; height: 15px; }
.hamburger { display: none; width: 42px; height: 42px; border-radius: var(--radius-pill); position: relative; }
.hamburger span, .hamburger::before, .hamburger::after {
  content: "";
  position: absolute;
  left: 11px; right: 11px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--duration-fast) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
}
.hamburger::before { top: 15px; }
.hamburger span { top: 20px; }
.hamburger::after { top: 25px; }
.hamburger.is-open::before { transform: translateY(5px) rotate(45deg); }
.hamburger.is-open span { opacity: 0; }
.hamburger.is-open::after { transform: translateY(-5px) rotate(-45deg); }

.scroll-progress {
  position: absolute;
  bottom: -1px; left: 0;
  height: 2.5px;
  width: 0%;
  background: linear-gradient(90deg, var(--blue-500), var(--pink-500));
  z-index: var(--z-progress);
  transition: width 80ms linear;
}

@media (max-width: 1220px) {
  .site-nav {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: var(--color-bg);
    padding: var(--space-6) var(--container-padding);
    overflow-y: auto;
    overscroll-behavior: contain;
    transform: translateX(100%);
    transition: transform var(--duration-base) var(--ease-standard);
  }
  .site-nav.is-open { transform: translateX(0); }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: var(--space-1); }
  .site-nav__link { padding: var(--space-4) var(--space-3); font-size: 1.05rem; }
  .site-nav__dropdown {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: none; background: var(--color-bg-alt);
    display: none; margin-top: var(--space-1);
  }
  .site-nav__item.has-dropdown.is-expanded .site-nav__dropdown { display: block; }
  .site-header__actions .btn--primary { display: none; }
  .hamburger { display: block; }
}

.noscript-banner {
  background: var(--navy-900);
  color: #fff;
  text-align: center;
  padding: var(--space-3);
  font-size: var(--font-size-sm);
}
.noscript-banner a { color: var(--blue-300); text-decoration: underline; }

/* 10b. Footer ------------------------------------------------------------------------ */
.site-footer {
  background: var(--navy-950);
  color: var(--gray-300);
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(59, 125, 242, 0.18), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(236, 30, 99, 0.1), transparent 40%);
  pointer-events: none;
}
.site-footer__top { position: relative; padding-block: var(--space-8) var(--space-7); }
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 0.8fr 1.2fr;
  gap: var(--space-6);
}
@media (max-width: 980px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .site-footer__grid { grid-template-columns: 1fr; } }

.site-footer__brand-logo { height: 34px; width: auto; object-fit: contain; margin-bottom: var(--space-4); border-radius: var(--radius-sm); }
.site-footer p { color: var(--gray-400); font-size: 0.9rem; }
.site-footer__desc { max-width: 320px; margin-top: var(--space-3); }

.site-footer__social { display: flex; gap: var(--space-2); margin-top: var(--space-5); }
.site-footer__social a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}
.site-footer__social a:hover { background: var(--color-primary); border-color: var(--color-primary); transform: translateY(-3px); }
.site-footer__social svg { width: 18px; height: 18px; color: #fff; }

.site-footer__heading { color: #fff; font-size: 0.85rem; font-weight: var(--font-weight-semibold); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: var(--space-4); }
.site-footer__col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.site-footer__col a { font-size: 0.9rem; color: var(--gray-400); transition: color var(--duration-fast); }
.site-footer__col a:hover { color: #fff; }
.site-footer__contact-item { display: flex; align-items: flex-start; gap: var(--space-3); font-size: 0.875rem; color: var(--gray-400); }
.site-footer__contact-item svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 2px; color: var(--blue-400); }

.site-footer__newsletter p { margin-bottom: var(--space-4); }

.site-footer__bottom {
  position: relative;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-block: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--gray-500);
}
.site-footer__bottom a { color: var(--gray-500); }
.site-footer__bottom a:hover { color: #fff; }
.site-footer__bottom-links { display: flex; gap: var(--space-5); flex-wrap: wrap; }

/* 11. Overlays: modal, toast, lightbox, mobile search --------------------------------- */
.overlay-backdrop {
  position: fixed; inset: 0;
  background: rgba(5, 11, 24, 0.72);
  backdrop-filter: blur(6px);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-base) var(--ease-out);
}
.overlay-backdrop.is-open { opacity: 1; visibility: visible; }

.modal {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -46%);
  width: min(560px, 92vw);
  max-height: 86vh;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-modal);
  padding: var(--space-7);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-base) var(--ease-out),
              visibility var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
}
.modal.is-open { opacity: 1; visibility: visible; transform: translate(-50%, -50%); }
.modal__close { position: absolute; top: var(--space-4); right: var(--space-4); }
.modal--lg { width: min(880px, 94vw); }

.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 280px;
  animation: toast-in var(--duration-base) var(--ease-out);
}
.toast--success { border-left-color: var(--color-success); }
.toast--danger { border-left-color: var(--color-danger); }
@keyframes toast-in { from { opacity: 0; transform: translateX(24px); } to { opacity: 1; transform: translateX(0); } }

.lightbox {
  position: fixed; inset: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(5, 11, 24, 0.92);
  padding: var(--space-6);
}
.lightbox.is-open { display: flex; }
.lightbox__frame { max-width: 1000px; width: 100%; }
.lightbox__media { width: 100%; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-lg); }
.lightbox__caption { color: #fff; margin-top: var(--space-4); text-align: center; }
.lightbox__caption p { color: var(--gray-300); }
.lightbox__close, .lightbox__nav {
  position: fixed;
  color: #fff;
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.08);
}
.lightbox__close:hover, .lightbox__nav:hover { background: rgba(255,255,255,0.18); }
.lightbox__close { top: var(--space-6); right: var(--space-6); }
.lightbox__nav--prev { left: var(--space-6); top: 50%; transform: translateY(-50%); }
.lightbox__nav--next { right: var(--space-6); top: 50%; transform: translateY(-50%); }

/* 12. Tables (admin + leaderboards) ---------------------------------------------------- */
.data-table-wrap { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
.data-table { width: 100%; min-width: 640px; }
.data-table th, .data-table td { padding: var(--space-4) var(--space-5); text-align: left; font-size: 0.9rem; }
.data-table thead { background: var(--color-bg-alt); }
.data-table th { font-weight: var(--font-weight-semibold); color: var(--color-text-secondary); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; }
.data-table tbody tr { border-top: 1px solid var(--color-border); transition: background-color var(--duration-fast); }
.data-table tbody tr:hover { background: var(--color-bg-alt); }
.data-table .row-actions { display: flex; gap: var(--space-2); }

.leaderboard-table tbody tr:nth-child(1) .lb-rank { background: linear-gradient(135deg,#f5c94b,#d99a1c); color: #4a3200; }
.leaderboard-table tbody tr:nth-child(2) .lb-rank { background: linear-gradient(135deg,#d7dde5,#a7b0bd); color: #2c313a; }
.leaderboard-table tbody tr:nth-child(3) .lb-rank { background: linear-gradient(135deg,#e2a86f,#b97a44); color: #3a230f; }
.lb-rank {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: var(--radius-pill);
  font-weight: var(--font-weight-bold); font-size: 0.85rem;
  background: var(--gray-100); color: var(--gray-700);
}

/* 13. Motion & scroll effects ----------------------------------------------------------- */
.page-loader {
  position: fixed; inset: 0;
  z-index: 2000;
  background: var(--navy-950);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s var(--ease-out), visibility 0.5s var(--ease-out);
}
.page-loader.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.page-loader__mark { width: 56px; height: 56px; position: relative; }
.page-loader__mark svg { width: 100%; height: 100%; animation: loader-spin 1.1s linear infinite; }
@keyframes loader-spin { to { transform: rotate(360deg); } }

.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-back-to-top);
  width: 48px; height: 48px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--duration-base) var(--ease-out),
              visibility var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); }

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  transition-delay: var(--reveal-delay, 0s);
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
[data-reveal="fade"] { transform: none; }
[data-reveal="left"] { transform: translateX(-32px); }
[data-reveal="left"].is-visible { transform: translateX(0); }
[data-reveal="right"] { transform: translateX(32px); }
[data-reveal="right"].is-visible { transform: translateX(0); }
[data-reveal="scale"] { transform: scale(0.92); }
[data-reveal="scale"].is-visible { transform: scale(1); }

.dark-toggle svg { width: 20px; height: 20px; }
.dark-toggle .icon-sun { display: none; }
[data-theme="dark"] .dark-toggle .icon-sun { display: block; }
[data-theme="dark"] .dark-toggle .icon-moon { display: none; }

/* 14. Timeline ------------------------------------------------------------------------- */
.timeline { position: relative; max-width: 900px; margin-inline: auto; }
.timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--color-border), var(--color-primary), var(--color-border));
}
.timeline__item { position: relative; padding-left: 60px; padding-bottom: var(--space-7); }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__marker {
  position: absolute; left: 10px; top: 2px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--color-bg-elevated);
  border: 3px solid var(--color-primary);
  box-shadow: 0 0 0 5px var(--color-primary-soft);
}
.timeline__item.is-past .timeline__marker { border-color: var(--gray-400); box-shadow: 0 0 0 5px var(--gray-100); }
[data-theme="dark"] .timeline__item.is-past .timeline__marker { box-shadow: 0 0 0 5px rgba(255,255,255,0.06); }
.timeline__date { font-size: 0.8rem; font-weight: var(--font-weight-semibold); color: var(--color-primary); text-transform: uppercase; letter-spacing: 0.04em; }
.timeline__content { margin-top: var(--space-2); }

/* 15. Stats / counters --------------------------------------------------------------- */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
@media (max-width: 860px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
.stat-card { text-align: center; padding: var(--space-6) var(--space-4); }
.stat-value {
  font-size: clamp(2.25rem, 1.7rem + 2vw, 3.25rem);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
  font-variant-numeric: tabular-nums;
}
.stat-label { margin-top: var(--space-2); color: var(--color-text-secondary); font-size: 0.9rem; font-weight: var(--font-weight-medium); }

/* Countdown */
.countdown { display: flex; gap: var(--space-2); }
.countdown__unit { text-align: center; min-width: 46px; }
.countdown__num {
  font-size: 1.15rem; font-weight: var(--font-weight-bold);
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.3rem;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-primary);
}
.countdown__label { display: block; font-size: 0.6rem; text-transform: uppercase; color: var(--color-text-muted); margin-top: 3px; letter-spacing: 0.04em; }
.countdown.is-urgent .countdown__num { background: var(--color-danger-soft); color: var(--color-danger); }

/* Search overlay */
.search-overlay {
  position: fixed; inset: 0;
  background: rgba(5,11,24,0.6);
  backdrop-filter: blur(6px);
  z-index: var(--z-overlay);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
  opacity: 0; visibility: hidden;
  transition: opacity var(--duration-base), visibility var(--duration-base);
}
.search-overlay.is-open { opacity: 1; visibility: visible; }
.search-panel {
  width: min(640px, 92vw);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-5);
}
.search-panel__input { display: flex; align-items: center; gap: var(--space-3); border-bottom: 1px solid var(--color-border); padding-bottom: var(--space-4); }
.search-panel__input input { flex: 1; border: none; background: none; font-size: 1.1rem; }
.search-panel__input svg { width: 20px; height: 20px; color: var(--color-text-muted); }
.search-results { margin-top: var(--space-4); display: flex; flex-direction: column; gap: var(--space-1); max-height: 50vh; overflow-y: auto; overscroll-behavior: contain; }
.search-results a { display: flex; flex-direction: column; padding: var(--space-3); border-radius: var(--radius-sm); }
.search-results a:hover { background: var(--color-bg-alt); }
.search-results a span { font-size: 0.78rem; color: var(--color-text-muted); }
.search-empty { padding: var(--space-5); text-align: center; color: var(--color-text-muted); font-size: 0.9rem; }

/* Avatar / initials placeholder (used for TBA leadership + generated org marks) */
.avatar-initials {
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--font-weight-bold);
  color: #fff;
  background: linear-gradient(135deg, var(--blue-600), var(--navy-700));
  border-radius: 50%;
  flex-shrink: 0;
}

/* Empty / placeholder demo-mode banner (shared by admin + gallery seeds) */
.demo-banner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-warning-soft);
  color: var(--color-warning);
  border: 1px solid currentColor;
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-size: 0.875rem;
}
.demo-banner svg { width: 20px; height: 20px; flex-shrink: 0; }
.demo-banner strong { font-weight: var(--font-weight-semibold); }

/* 16. Opportunity Radar card (shared: Home + Research Engagement) ---------------------- */
.opp-card { padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-4); }
.opp-card__top { display: flex; align-items: center; justify-content: space-between; }
.opp-card__org { display: flex; align-items: flex-start; gap: var(--space-3); }
.opp-card__mark {
  width: 44px; height: 44px; border-radius: var(--radius-md);
  font-size: 0.85rem; font-weight: var(--font-weight-bold); color: #fff; flex-shrink: 0;
}
.opp-card__title { font-size: 1.15rem; line-height: 1.3; }
.opp-card__organizer { font-size: 0.85rem; color: var(--color-text-muted); margin-top: 2px; }
.opp-card__desc { font-size: 0.9rem; color: var(--color-text-secondary); flex-grow: 0; }
.opp-card__tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.opp-card__meta-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3);
  padding: var(--space-4); background: var(--color-bg-alt); border-radius: var(--radius-md);
}
.opp-card__meta-grid div { display: flex; flex-direction: column; gap: 2px; }
.opp-card__meta-grid span { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-muted); }
.opp-card__meta-grid strong { font-size: 0.85rem; font-weight: var(--font-weight-semibold); color: var(--color-text-primary); }
.opp-card__countdown-wrap { display: flex; flex-direction: column; gap: var(--space-2); margin-top: auto; }
.opp-card__deadline-label { font-size: 0.78rem; color: var(--color-text-muted); }
.opp-radar-toolbar { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); flex-wrap: wrap; margin-bottom: var(--space-6); }
.opp-radar-count { font-size: 0.85rem; color: var(--color-text-muted); }
.opp-card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--space-6); }
.opp-card-grid.is-empty { display: block; }
.opp-empty-state { text-align: center; padding: var(--space-8) var(--space-5); color: var(--color-text-muted); }
.opp-empty-state svg { width: 40px; height: 40px; margin-bottom: var(--space-3); opacity: 0.5; }

/* 17. Generic tab/view switcher (Events view toggle, Research Rumble tabs, etc.) ------- */
.view-toolbar { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); flex-wrap: wrap; margin-bottom: var(--space-7); }
.view-switch { display: inline-flex; background: var(--color-bg-alt); border-radius: var(--radius-pill); padding: 4px; gap: 4px; flex-wrap: wrap; }
.view-switch button {
  padding: 0.55rem 1.2rem; border-radius: var(--radius-pill); font-size: 0.85rem; font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary); display: flex; align-items: center; gap: 6px; white-space: nowrap;
}
.view-switch button svg { width: 16px; height: 16px; }
.view-switch button.is-active { background: var(--color-bg-elevated); color: var(--color-primary); box-shadow: var(--shadow-sm); }
.view-panel { display: none; }
.view-panel.is-active { display: block; }

/* Responsive base type scale-down + section spacing on small screens */
@media (max-width: 640px) {
  .section { padding-block: var(--space-7); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}