/*
Theme Name:   VHL Child Theme
Theme URI:    https://virtualhearinglab.org
Description:  Virtual Hearing Lab child theme for GeneratePress
Author:       Virtual Hearing Lab
Template:     generatepress
Version:      1.0.0
Text Domain:  vhl-child
*/

/* ═══════════════════════════════════════════════════
   VHL DESIGN SYSTEM — CSS CUSTOM PROPERTIES
═══════════════════════════════════════════════════ */
:root {
  --vhl-teal:      #0f7a6e;
  --vhl-teal-lt:   #e3f4f2;
  --vhl-teal-md:   #1d9e8f;
  --vhl-teal-dk:   #0a6358;
  --vhl-ink:       #1a1c1e;
  --vhl-ink-60:    #5a5e63;
  --vhl-ink-30:    #b0b4b9;
  --vhl-paper:     #f8f7f4;
  --vhl-white:     #ffffff;
  --vhl-rule:      #e4e2dd;
  --vhl-raj:       'Rajdhani', sans-serif;
  --vhl-sans:      'DM Sans', system-ui, sans-serif;
  --vhl-serif:     'DM Serif Display', Georgia, serif;
}

/* ═══════════════════════════════════════════════════
   GOOGLE FONTS IMPORT
═══════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;500;600;700&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&family=DM+Serif+Display:ital@0;1&display=swap');

/* ═══════════════════════════════════════════════════
   GLOBAL BASE
═══════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: var(--vhl-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--vhl-ink);
  background: var(--vhl-white);
  -webkit-font-smoothing: antialiased;
}

/* ═══════════════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════════════ */
.site-header,
.main-navigation {
  background: rgba(255, 255, 255, 0.96) !important;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--vhl-rule);
}

.site-header .inside-header {
  padding: 0 48px;
  height: 64px;
  display: flex;
  align-items: center;
  max-width: none;
}

/* Logo */
.site-branding {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo-mark,
.vhl-nav-logo .vhl-mark-wrap {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--vhl-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Waveform mark SVG — used in nav, footer, hero */
.vhl-mark svg { display: block; }

.site-title a {
  font-family: var(--vhl-raj);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--vhl-ink) !important;
  text-decoration: none;
  line-height: 1;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.site-title-sub {
  font-family: var(--vhl-raj);
  font-size: 8.5px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--vhl-teal);
  line-height: 1;
}

/* Nav links */
.main-navigation .menu > li > a {
  font-family: var(--vhl-sans);
  font-size: 14px;
  font-weight: 400;
  color: var(--vhl-ink-60) !important;
  transition: color .2s;
  padding: 0 14px;
}

.main-navigation .menu > li > a:hover,
.main-navigation .menu > li.current-menu-item > a {
  color: var(--vhl-teal) !important;
}

/* Get Involved CTA button */
.main-navigation .menu > li.menu-item-cta > a {
  font-family: var(--vhl-raj);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--vhl-teal) !important;
  border: 1.5px solid var(--vhl-teal);
  border-radius: 6px;
  padding: 6px 16px;
  margin-left: 8px;
  transition: background .2s, color .2s;
}

.main-navigation .menu > li.menu-item-cta > a:hover {
  background: var(--vhl-teal);
  color: var(--vhl-white) !important;
}

/* ═══════════════════════════════════════════════════
   TYPOGRAPHY
═══════════════════════════════════════════════════ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--vhl-serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--vhl-ink);
  line-height: 1.15;
}

h1 { font-size: clamp(38px, 4.5vw, 56px); }
h2 { font-size: clamp(26px, 3vw, 36px); }
h3 { font-size: 22px; }
h4 { font-family: var(--vhl-sans); font-size: 16px; font-weight: 500; letter-spacing: 0; }

p { margin-bottom: 1.2em; color: var(--vhl-ink-60); }

a { color: var(--vhl-teal); }
a:hover { color: var(--vhl-teal-dk); }

/* Section label (Rajdhani small caps above headings) */
.vhl-eyebrow {
  font-family: var(--vhl-raj);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--vhl-ink-30);
  display: block;
  margin-bottom: 8px;
}

/* ═══════════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════════ */
.vhl-btn-primary,
.wp-block-button__link,
.button {
  font-family: var(--vhl-raj) !important;
  font-size: 14px !important;
  font-weight: 600 !important;
  letter-spacing: .06em !important;
  text-transform: uppercase !important;
  background: var(--vhl-teal) !important;
  color: var(--vhl-white) !important;
  border-radius: 8px !important;
  padding: 13px 24px !important;
  border: none !important;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background .2s, transform .15s;
}

.vhl-btn-primary:hover,
.wp-block-button__link:hover {
  background: var(--vhl-teal-dk) !important;
  transform: translateY(-1px);
}

.vhl-btn-secondary {
  font-family: var(--vhl-raj);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  background: transparent;
  color: var(--vhl-ink);
  border: 1px solid var(--vhl-rule);
  border-radius: 8px;
  padding: 13px 24px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: border-color .2s;
}

.vhl-btn-secondary:hover {
  border-color: var(--vhl-ink-60);
  color: var(--vhl-ink);
}

/* ═══════════════════════════════════════════════════
   HERO SECTION
═══════════════════════════════════════════════════ */
.vhl-hero {
  background: var(--vhl-paper);
  padding: 96px 48px 80px;
}

.vhl-hero-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 64px;
  align-items: center;
  max-width: 1160px;
  margin: 0 auto;
}

.vhl-hero h1 em {
  font-style: italic;
  color: var(--vhl-teal);
}

.vhl-hero-desc {
  font-size: 17px;
  color: var(--vhl-ink-60);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 520px;
  font-weight: 300;
}

.vhl-hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Stats card */
.vhl-stats-card {
  background: var(--vhl-white);
  border: 1px solid var(--vhl-rule);
  border-radius: 16px;
  padding: 32px;
}

.vhl-stats-card-label {
  font-family: var(--vhl-raj);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--vhl-ink-30);
  margin-bottom: 20px;
}

.vhl-stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.vhl-stat-num {
  font-family: var(--vhl-serif);
  font-size: 42px;
  line-height: 1;
  color: var(--vhl-ink);
  letter-spacing: -0.02em;
}

.vhl-stat-num span {
  font-size: 22px;
  color: var(--vhl-teal);
}

.vhl-stat-label {
  font-size: 12px;
  color: var(--vhl-ink-60);
  margin-top: 4px;
}

.vhl-card-divider {
  height: 1px;
  background: var(--vhl-rule);
  margin: 0 0 20px;
}

.vhl-affil-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 12px;
  color: var(--vhl-ink-60);
}

.vhl-affil-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--vhl-teal);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════
   RESEARCH THEMES GRID
═══════════════════════════════════════════════════ */
.vhl-themes-section {
  padding: 80px 48px;
  max-width: 1208px;
  margin: 0 auto;
}

.vhl-themes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--vhl-rule);
  border-radius: 12px;
  overflow: hidden;
}

.vhl-theme-cell {
  padding: 28px 28px 32px;
  background: var(--vhl-white);
  transition: background .2s;
}

.vhl-theme-cell:hover {
  background: var(--vhl-teal-lt);
}

.vhl-theme-cell:nth-child(n+4) {
  border-top: 1px solid var(--vhl-rule);
}

.vhl-theme-cell:nth-child(3n+2) {
  border-left: 1px solid var(--vhl-rule);
  border-right: 1px solid var(--vhl-rule);
}

.vhl-theme-num {
  font-family: var(--vhl-raj);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--vhl-teal);
  margin-bottom: 12px;
  display: block;
}

.vhl-theme-name {
  font-size: 15px;
  font-weight: 500;
  color: var(--vhl-ink);
  margin-bottom: 8px;
  line-height: 1.3;
  font-family: var(--vhl-sans);
}

.vhl-theme-desc {
  font-size: 13px;
  color: var(--vhl-ink-60);
  line-height: 1.55;
  margin-bottom: 0;
}

/* ═══════════════════════════════════════════════════
   PUBLICATIONS SECTION / PAGE
═══════════════════════════════════════════════════ */
.vhl-pubs-section {
  background: var(--vhl-paper);
  padding: 80px 48px;
}

.vhl-pubs-inner {
  max-width: 1160px;
  margin: 0 auto;
}

.vhl-pubs-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
}

.vhl-pubs-all {
  font-family: var(--vhl-raj);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--vhl-teal);
  text-decoration: none;
}

.vhl-pub-item {
  background: var(--vhl-white);
  border: 1px solid var(--vhl-rule);
  border-radius: 10px;
  padding: 18px 22px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: start;
  text-decoration: none;
  color: inherit;
  margin-bottom: 8px;
  transition: border-color .2s;
}

.vhl-pub-item:hover {
  border-color: var(--vhl-teal-md);
}

.vhl-pub-year {
  font-family: var(--vhl-raj);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--vhl-teal);
  background: var(--vhl-teal-lt);
  border-radius: 4px;
  padding: 3px 8px;
  white-space: nowrap;
  height: fit-content;
}

.vhl-pub-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--vhl-ink);
  line-height: 1.4;
  margin-bottom: 4px;
}

.vhl-pub-meta {
  font-size: 12px;
  color: var(--vhl-ink-60);
  margin: 0;
}

.vhl-pub-arrow {
  color: var(--vhl-ink-30);
  font-size: 16px;
  transition: color .2s;
}

.vhl-pub-item:hover .vhl-pub-arrow {
  color: var(--vhl-teal);
}

/* Filter row */
.vhl-filter-row {
  display: flex;
  gap: 8px;
  margin-bottom: 28px;
  flex-wrap: wrap;
  align-items: center;
}

.vhl-filter-btn {
  font-family: var(--vhl-raj);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 4px;
  border: 1px solid var(--vhl-rule);
  background: var(--vhl-white);
  color: var(--vhl-ink-60);
  cursor: pointer;
  transition: all .15s;
}

.vhl-filter-btn.active,
.vhl-filter-btn:hover {
  background: var(--vhl-teal);
  color: var(--vhl-white);
  border-color: var(--vhl-teal);
}

.vhl-search-box {
  margin-left: auto;
  background: var(--vhl-white);
  border: 1px solid var(--vhl-rule);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 13px;
  font-family: var(--vhl-sans);
  color: var(--vhl-ink);
  width: 240px;
  outline: none;
  transition: border-color .2s;
}

.vhl-search-box:focus {
  border-color: var(--vhl-teal);
}

/* ═══════════════════════════════════════════════════
   PEOPLE PAGE
═══════════════════════════════════════════════════ */
.vhl-pi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 48px;
}

.vhl-pi-card {
  background: var(--vhl-white);
  border: 1px solid var(--vhl-rule);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.vhl-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--vhl-teal-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--vhl-raj);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--vhl-teal);
  border: 2px solid #c5ede8;
  flex-shrink: 0;
  overflow: hidden;
}

.vhl-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.vhl-person-name {
  font-size: 15px;
  font-weight: 500;
  color: var(--vhl-ink);
  margin-bottom: 2px;
  font-family: var(--vhl-sans);
}

.vhl-person-role {
  font-size: 12px;
  color: var(--vhl-ink-60);
  margin-bottom: 1px;
}

.vhl-person-affil {
  font-size: 11px;
  color: var(--vhl-ink-30);
  margin-bottom: 8px;
}

.vhl-person-bio {
  font-size: 12px;
  color: var(--vhl-ink-60);
  line-height: 1.6;
  margin-top: 10px;
}

.vhl-pi-tag {
  font-family: var(--vhl-raj);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--vhl-teal);
  background: var(--vhl-teal-lt);
  border-radius: 3px;
  padding: 2px 6px;
  display: inline-block;
  margin: 2px 2px 0 0;
}

.vhl-team-section-label {
  font-family: var(--vhl-raj);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--vhl-ink-30);
  margin-bottom: 16px;
  display: block;
}

.vhl-team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.vhl-team-card {
  background: var(--vhl-paper);
  border-radius: 10px;
  padding: 20px 14px;
  text-align: center;
}

.vhl-team-card .vhl-avatar {
  width: 56px;
  height: 56px;
  font-size: 13px;
  margin: 0 auto 12px;
}

/* ═══════════════════════════════════════════════════
   PARTNERS STRIP
═══════════════════════════════════════════════════ */
.vhl-partners {
  border-top: 1px solid var(--vhl-rule);
  padding: 48px;
}

.vhl-partners-inner {
  max-width: 1160px;
  margin: 0 auto;
}

.vhl-partners-label {
  font-family: var(--vhl-raj);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--vhl-ink-30);
  text-align: center;
  margin-bottom: 32px;
}

.vhl-partners-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.vhl-partner-logo {
  font-family: var(--vhl-raj);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--vhl-ink-30);
  padding: 8px 18px;
  border: 1px solid var(--vhl-rule);
  border-radius: 6px;
  transition: color .2s, border-color .2s;
  text-decoration: none;
}

.vhl-partner-logo:hover {
  color: var(--vhl-ink-60);
  border-color: var(--vhl-ink-30);
}

/* ═══════════════════════════════════════════════════
   GET INVOLVED PAGE
═══════════════════════════════════════════════════ */
.vhl-gi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.vhl-gi-card {
  background: var(--vhl-white);
  border: 1px solid var(--vhl-rule);
  border-radius: 12px;
  padding: 24px;
}

.vhl-gi-eyebrow {
  font-family: var(--vhl-raj);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--vhl-teal);
  margin-bottom: 8px;
  display: block;
}

.vhl-gi-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--vhl-ink);
  margin-bottom: 10px;
  line-height: 1.3;
  font-family: var(--vhl-sans);
}

.vhl-gi-body {
  font-size: 13px;
  color: var(--vhl-ink-60);
  line-height: 1.65;
  margin-bottom: 18px;
}

.vhl-gi-btn {
  font-family: var(--vhl-raj);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--vhl-teal);
  border: 1.5px solid var(--vhl-teal);
  border-radius: 6px;
  padding: 7px 16px;
  display: inline-block;
  text-decoration: none;
  transition: background .2s, color .2s;
}

.vhl-gi-btn:hover {
  background: var(--vhl-teal);
  color: var(--vhl-white);
}

/* Contact form */
.vhl-contact-form {
  max-width: 580px;
}

.vhl-contact-form input,
.vhl-contact-form select,
.vhl-contact-form textarea {
  font-family: var(--vhl-sans);
  font-size: 14px;
  background: var(--vhl-paper);
  border: 1px solid var(--vhl-rule);
  border-radius: 7px;
  padding: 10px 14px;
  width: 100%;
  outline: none;
  transition: border-color .2s;
  color: var(--vhl-ink);
}

.vhl-contact-form input:focus,
.vhl-contact-form select:focus,
.vhl-contact-form textarea:focus {
  border-color: var(--vhl-teal);
}

.vhl-contact-form .field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.vhl-contact-form textarea {
  height: 120px;
  resize: vertical;
  margin-bottom: 16px;
}

/* ═══════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════ */
.site-footer {
  background: var(--vhl-ink) !important;
  color: var(--vhl-ink-30);
  padding: 48px 48px 32px;
}

.site-footer .inside-footer {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0;
}

.vhl-footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.vhl-footer-logo-name {
  font-family: var(--vhl-raj);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: #fff;
  line-height: 1;
}

.vhl-footer-logo-sub {
  font-family: var(--vhl-raj);
  font-size: 8px;
  font-weight: 400;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--vhl-teal-md);
  line-height: 1;
  margin-top: 2px;
}

.vhl-footer-desc {
  font-size: 13px;
  line-height: 1.65;
  color: #6b7280;
  max-width: 280px;
}

.vhl-footer-col h4 {
  font-family: var(--vhl-raj);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #9ca3af;
  margin-bottom: 16px;
}

.vhl-footer-col a {
  display: block;
  font-size: 13px;
  color: #6b7280;
  text-decoration: none;
  margin-bottom: 10px;
  transition: color .2s;
}

.vhl-footer-col a:hover { color: #fff; }

.vhl-footer-bottom {
  border-top: 1px solid #2d3035;
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.vhl-footer-copy { font-size: 12px; color: #4b5563; }

.vhl-footer-social { display: flex; gap: 16px; }
.vhl-footer-social a {
  font-size: 12px;
  color: #4b5563;
  text-decoration: none;
  transition: color .2s;
}
.vhl-footer-social a:hover { color: #fff; }

/* ═══════════════════════════════════════════════════
   UTILITY
═══════════════════════════════════════════════════ */
.vhl-section { padding: 80px 48px; }
.vhl-section-paper { padding: 80px 48px; background: var(--vhl-paper); }
.vhl-inner { max-width: 1160px; margin: 0 auto; }

/* Fade-up animation for hero */
@keyframes vhlFadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

.vhl-hero .vhl-hero-left > * {
  animation: vhlFadeUp .6s ease both;
}
.vhl-hero .vhl-hero-left > *:nth-child(1) { animation-delay: .05s; }
.vhl-hero .vhl-hero-left > *:nth-child(2) { animation-delay: .12s; }
.vhl-hero .vhl-hero-left > *:nth-child(3) { animation-delay: .20s; }
.vhl-hero .vhl-hero-left > *:nth-child(4) { animation-delay: .28s; }
.vhl-stats-card { animation: vhlFadeUp .6s ease .15s both; }

/* ═══════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .vhl-hero-grid { grid-template-columns: 1fr; }
  .vhl-stats-card { display: none; }
  .vhl-themes-grid { grid-template-columns: repeat(2, 1fr); }
  .vhl-pi-grid { grid-template-columns: 1fr; }
  .vhl-gi-grid { grid-template-columns: 1fr; }
  .vhl-footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .vhl-hero { padding: 64px 24px 48px; }
  .vhl-section, .vhl-section-paper { padding: 48px 24px; }
  .vhl-themes-grid { grid-template-columns: 1fr; }
  .vhl-team-grid { grid-template-columns: repeat(2, 1fr); }
  .site-header .inside-header { padding: 0 24px; }
  .vhl-footer-top { grid-template-columns: 1fr; }
  .vhl-partners { padding: 32px 24px; }
}