/* Science Corps — Main Stylesheet */

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

:root {
  --blue:       #03a9f4;
  --blue-dark:  #026e9f;
  --blue-light: #e6f6fe;
  --orange:     #f79007;
  --navy:       #17252a;
  --text:       #467080;
  --text-dark:  #17252a;
  --muted:      #777;
  --border:     #eee;
  --white:      #fff;
  --bg-light:   #f5fafd;
  --max-w:      1200px;
  --nav-h:      80px;
  --radius:     5px;
  --shadow:     0 2px 8px rgba(0,0,0,0.08);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Open Sans', 'Segoe UI', Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
}

a { color: var(--blue); text-decoration: none; transition: color .2s; }
a:hover { color: var(--orange); text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { padding: 0; margin: 0; }

h1,h2,h3,h4,h5,h6 {
  font-family: 'Open Sans', sans-serif;
  color: var(--text-dark);
  line-height: 1.25;
  font-weight: 700;
  margin-bottom: .5em;
}
h1 { font-size: clamp(2rem, 5vw, 3.375rem); font-weight: 300; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.1rem; }

p { margin-bottom: 1em; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.bg-light { background: var(--bg-light); }
.content-narrow { max-width: 780px; margin: 0 auto; }

/* ── Section Title ────────────────────────────────────────── */
.section-title {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  margin-bottom: 48px;
  color: var(--text-dark);
}
.section-subtitle {
  text-align: center;
  max-width: 640px;
  margin: -36px auto 48px;
  color: var(--text);
}

/* ── Navigation ───────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 999;
  background: transparent;
  transition: background .3s, box-shadow .3s;
  padding: 0;
}
.navbar.scrolled {
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
}
.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.navbar__logo img { height: 50px; width: auto; }
.navbar__logo span {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: .03em;
  text-transform: uppercase;
  transition: color .3s;
}
.navbar.scrolled .navbar__logo span { color: var(--navy); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}
.nav-menu > li { position: relative; }
.nav-menu > li > a {
  display: block;
  padding: 8px 18px;
  font-size: .82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: #fff;
  transition: color .2s;
}
.navbar.scrolled .nav-menu > li > a { color: var(--navy); }
.nav-menu > li > a:hover,
.navbar.scrolled .nav-menu > li > a:hover { color: var(--blue); }

/* Donate CTA button in nav */
.nav-cta {
  background: var(--blue) !important;
  color: #fff !important;
  border-radius: var(--radius) !important;
  padding: 8px 18px !important;
}
.nav-cta:hover { background: var(--blue-dark) !important; color: #fff !important; }
.navbar.scrolled .nav-cta { color: #fff !important; }

/* Dropdown */
.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  min-width: 180px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  list-style: none;
  padding: 6px 0;
  z-index: 100;
}
.dropdown-menu a {
  display: block;
  padding: 9px 18px;
  font-size: .88rem;
  color: var(--navy);
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
  transition: background .15s, color .15s;
}
.dropdown-menu a:hover { background: var(--blue-light); color: var(--blue); }
.dropdown:hover .dropdown-menu { display: block; }

/* Hamburger */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; transition: .3s; }
.navbar.scrolled .nav-toggle span { background: var(--navy); }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  position: relative;
  background-image: url('../images/hero-bg.jpg');
  background-size: cover;
  background-position: 50% 30%;
  background-repeat: no-repeat;
  padding: 160px 0 180px;
  text-align: center;
  color: #fff;
  margin-top: calc(-1 * var(--nav-h));
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: rgba(23, 37, 42, 0.50);
}
.hero__content {
  position: relative;
  z-index: 1;
}
.hero h1 {
  font-family: 'Didact Gothic', 'Open Sans', sans-serif;
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 400;
  color: #fff;
  letter-spacing: .02em;
  margin-bottom: 16px;
}
.hero p {
  font-size: 1.2rem;
  color: rgba(255,255,255,.9);
  max-width: 600px;
  margin: 0 auto 40px;
  font-weight: 300;
}
.hero__btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: .875rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  transition: background .2s, border-color .2s, color .2s, transform .15s;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; }

.btn-blue {
  background: var(--blue);
  color: #fff !important;
  border-color: var(--blue);
}
.btn-blue:hover { background: var(--blue-dark); border-color: var(--blue-dark); color: #fff !important; }

.btn-white {
  background: #fff;
  color: var(--blue) !important;
  border-color: #fff;
}
.btn-white:hover { background: rgba(255,255,255,.9); color: var(--blue) !important; }

.btn-outline-white {
  background: transparent;
  color: #fff !important;
  border-color: rgba(255,255,255,.8);
}
.btn-outline-white:hover { background: rgba(255,255,255,.15); border-color: #fff; color: #fff !important; }

.btn-orange { background: var(--orange); color: #fff !important; border-color: var(--orange); }
.btn-orange:hover { background: #c97a05; border-color: #c97a05; color: #fff !important; }

/* ── Cards Grid (feature cards) ──────────────────────────── */
.cards-section { background: var(--white); }
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s;
  display: flex;
  flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.10); }
.card__icon {
  color: var(--blue);
  margin-bottom: 20px;
}
.card__icon svg { display: block; }
.card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}
.card h3 a { color: var(--text-dark); }
.card h3 a:hover { color: var(--orange); }
.card p { color: var(--text); font-size: .95rem; flex: 1; }
.card__link { margin-top: 16px; color: var(--blue); font-weight: 700; font-size: .9rem; display: inline-block; }
.card__link:hover { color: var(--orange); }

/* ── Learn More Banner ────────────────────────────────────── */
.learn-more-banner {
  background: var(--blue);
  padding: 64px 0;
  text-align: center;
  color: #fff;
}
.learn-more-banner h2 { color: #fff; margin-bottom: 16px; }
.learn-more-banner p { color: rgba(255,255,255,.9); max-width: 640px; margin: 0 auto 32px; }

/* ── Posts Grid ───────────────────────────────────────────── */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.post-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform .2s, box-shadow .2s;
}
.post-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.10); }
.post-card__meta {
  font-size: .8rem;
  color: var(--blue);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 10px;
}
.post-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}
.post-card h3 a { color: var(--text-dark); }
.post-card h3 a:hover { color: var(--blue); }
.post-card p { color: var(--text); font-size: .92rem; flex: 1; }

/* ── Page Header (non-hero pages) ─────────────────────────── */
.page-header {
  background: linear-gradient(135deg, #026e9f 0%, var(--blue) 100%);
  color: #fff;
  padding: 72px 0 60px;
  text-align: center;
}
.page-header h1 { color: #fff; font-weight: 700; margin-bottom: 8px; }
.page-header p { color: rgba(255,255,255,.85); font-size: 1.05rem; margin: 0; }

/* ── Post Page ────────────────────────────────────────────── */
.post-header { padding: 72px 0 48px; background: var(--bg-light); }
.post-header h1 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); font-weight: 700; color: var(--text-dark); max-width: 800px; }
.post-meta { color: var(--muted); margin-top: 12px; font-size: .88rem; }

.breadcrumb { font-size: .85rem; color: var(--muted); margin-bottom: 16px; }
.breadcrumb a { color: var(--blue); }
.breadcrumb span { margin: 0 6px; }

.post-body { max-width: 780px; margin: 0 auto; padding: 56px 24px 80px; }
.post-body h2 { font-size: 1.4rem; font-weight: 700; color: var(--text-dark); margin: 36px 0 14px; }
.post-body p  { margin-bottom: 18px; color: var(--text); line-height: 1.85; font-size: 1rem; }
.post-body img { border-radius: var(--radius); margin: 24px auto; box-shadow: var(--shadow); }
.post-body figure { text-align: center; margin: 28px 0; }
.post-body figcaption { font-size: .82rem; color: var(--muted); margin-top: 8px; font-style: italic; }
.post-body a { color: var(--blue); }
.post-body a:hover { color: var(--orange); }
.post-body blockquote {
  border-left: 4px solid var(--blue);
  padding: 14px 20px;
  background: var(--blue-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 24px 0;
  color: var(--text);
  font-style: italic;
}

/* ── Fellows Grid ─────────────────────────────────────────── */
.fellows-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.fellow-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s, box-shadow .2s;
}
.fellow-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,.10); }
.fellow-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center 25%;
  background: var(--blue-light);
}
.fellow-card__body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.fellow-card h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-dark); margin-bottom: 4px; }
.fellow-meta { color: var(--blue); font-size: .85rem; font-weight: 600; margin-bottom: 12px !important; }
.fellow-card p { color: var(--text); font-size: .93rem; }

/* ── Team Grid ────────────────────────────────────────────── */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.team-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  text-align: center;
}
.team-card img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--blue-light);
}
.team-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 4px; }
.team-role { color: var(--blue); font-size: .88rem; font-weight: 600; margin-bottom: 12px !important; }
.team-card p { color: var(--text); font-size: .93rem; }

/* ── Partner List ─────────────────────────────────────────── */
.partner-list, .styled-list {
  padding-left: 1.5em;
  margin-bottom: 1em;
  color: var(--text);
}
.partner-list li, .styled-list li {
  margin-bottom: .6em;
  line-height: 1.7;
}

/* ── FAQ ──────────────────────────────────────────────────── */
.faq-list { margin-top: 8px; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  padding: 18px 0;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-dark);
  font-size: 1rem;
  user-select: none;
}
.faq-q::after { content: '+'; font-size: 1.5rem; color: var(--blue); min-width: 20px; text-align: right; font-weight: 300; }
.faq-item.open .faq-q::after { content: '−'; }
.faq-a { display: none; padding: 0 0 18px; color: var(--text); line-height: 1.75; }
.faq-a a { color: var(--blue); }
.faq-a a:hover { color: var(--orange); }
.faq-item.open .faq-a { display: block; }

/* ── Contact Form ─────────────────────────────────────────── */
.contact-form { max-width: 600px; margin-top: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 700; margin-bottom: 6px; color: var(--text-dark); font-size: .9rem; }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%; padding: 12px 16px;
  border: 1px solid #ddd; border-radius: var(--radius);
  font-size: .95rem; font-family: inherit; color: var(--text-dark);
  transition: border-color .2s; background: #fff;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--blue); outline: none; }
.form-group textarea { min-height: 140px; resize: vertical; }

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 56px 0 0;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer__brand p {
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.7;
  margin-top: 14px;
}
.footer__brand img { height: 50px; width: auto; margin-bottom: 4px; }
.footer__social {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 16px;
}
.footer__social a {
  color: var(--muted);
  transition: color .2s;
  display: flex;
  align-items: center;
}
.footer__social a:hover { color: var(--blue); }
.footer h4 { color: var(--text-dark); font-size: .95rem; font-weight: 700; margin-bottom: 14px; text-transform: uppercase; letter-spacing: .06em; }
.footer ul { list-style: none; padding: 0; }
.footer ul li { margin-bottom: 8px; }
.footer ul a { color: var(--muted); font-size: .9rem; transition: color .2s; }
.footer ul a:hover { color: var(--blue); }
.footer__bottom {
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  padding: 16px 0;
  text-align: center;
  color: var(--muted);
  font-size: .85rem;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .cards-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .posts-grid { grid-template-columns: repeat(2, 1fr); }
  .fellows-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
}

@media (max-width: 640px) {
  .posts-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .hero { padding: 120px 0 100px; }

  .nav-menu {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 8px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,.1);
    z-index: 998;
  }
  .nav-menu.open { display: flex; }
  .nav-menu > li { width: 100%; }
  .nav-menu > li > a { color: var(--navy) !important; padding: 12px 24px; }
  .dropdown-menu { position: static; border: none; box-shadow: none; border-radius: 0; }
  .dropdown-menu a { padding: 8px 36px; }
  .nav-toggle { display: block; }
  .navbar__inner { position: relative; }
  .dropdown:hover .dropdown-menu { display: none; }
  .dropdown.open .dropdown-menu { display: block; }

  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }

  .cards-grid { max-width: 100%; }
}

@media (max-width: 480px) {
  .footer__grid { grid-template-columns: 1fr; }
}