/* ============================================================
   FEWL Lab — Weidner Lab @ ASU  |  style.css
   ============================================================
   HOW TO EDIT COLORS:
   All brand colors are defined as CSS variables at the top of
   this file under :root {}. Change them here and they update
   everywhere on the site automatically.

   ASU Official Colors:
     Maroon  #8C1D40   (primary)
     Gold    #FFC627   (accent)
   ============================================================ */

:root {
  /* ── Brand colors ── */
  --maroon-dark:   #5c1229;   /* darker maroon for hover states      */
  --maroon-main:   #8C1D40;   /* ASU maroon — primary brand color    */
  --maroon-mid:    #a8305a;   /* lighter maroon                      */
  --maroon-light:  #f5e6eb;   /* very light maroon tint              */
  --maroon-pale:   #fdf2f5;   /* page background tint                */
  --maroon-border: #ddb8c4;   /* border color                        */

  --gold-main:     #FFC627;   /* ASU gold — accent color             */
  --gold-dark:     #d4a000;   /* darker gold for text on light bg    */
  --gold-light:    #fff5d6;   /* light gold tint                     */

  /* ── Neutrals ── */
  --text-dark:     #1a1a2e;
  --text-mid:      #444;
  --text-light:    #777;
  --white:         #ffffff;
  --border-light:  #e8e8e8;
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Source Sans 3', 'Segoe UI', sans-serif;
  color: var(--text-dark);
  background: #fff;
  margin: 0;
}
a { color: var(--maroon-main); text-decoration: none; }
a:hover { color: var(--maroon-dark); }
img { max-width: 100%; height: auto; }

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Lora', Georgia, serif;
  color: var(--text-dark);
}
.section-title {
  font-family: 'Lora', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--maroon-main);
  margin-bottom: 0.3rem;
}
.section-subtitle {
  color: var(--text-light);
  font-size: 1rem;
  margin-bottom: 2rem;
}
.section-divider {
  width: 60px;
  height: 4px;
  background: var(--gold-main);
  border-radius: 2px;
  margin: 0.5rem 0 1.5rem;
}

/* ── Navbar ── */
#navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(140,29,64,0.10);
  padding: 0;
}
.navbar-brand {
  font-family: 'Lora', serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--maroon-main) !important;
  letter-spacing: 0.3px;
}
.navbar-brand span { color: var(--gold-dark); }
.navbar-nav .nav-link {
  font-weight: 600;
  color: var(--text-dark) !important;
  padding: 1rem 0.9rem;
  font-size: 0.92rem;
  transition: color 0.2s;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active { color: var(--maroon-main) !important; }
.navbar-toggler { border-color: var(--maroon-main); }
.dropdown-menu { border-top: 3px solid var(--maroon-main); border-radius: 0 0 8px 8px; }
.dropdown-item:hover { background: var(--maroon-light); color: var(--maroon-main); }

/* ── Hero ── */
.hero-section {
  background: linear-gradient(135deg, var(--maroon-dark) 0%, var(--maroon-main) 60%, var(--maroon-mid) 100%);
  color: var(--white);
  padding: 90px 0 70px;
  position: relative;
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-section h1 {
  font-family: 'Lora', serif;
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.25;
}
.hero-section h1 .gold { color: var(--gold-main); }
.hero-section p { font-size: 1.1rem; opacity: 0.9; line-height: 1.75; }
.hero-badge {
  display: inline-block;
  background: var(--gold-main);
  color: var(--maroon-dark);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.btn-maroon {
  background: var(--maroon-main);
  color: var(--white);
  font-weight: 700;
  border: 2px solid var(--maroon-main);
  border-radius: 6px;
  padding: 10px 26px;
  transition: all 0.2s;
  font-size: 0.92rem;
}
.btn-maroon:hover { background: var(--maroon-dark); border-color: var(--maroon-dark); color: var(--white); }
.btn-outline-gold {
  background: transparent;
  color: var(--gold-main);
  border: 2px solid var(--gold-main);
  border-radius: 6px;
  padding: 10px 26px;
  font-weight: 700;
  font-size: 0.92rem;
  transition: all 0.2s;
}
.btn-outline-gold:hover { background: var(--gold-main); color: var(--maroon-dark); }
.btn-outline-maroon {
  background: transparent;
  color: var(--maroon-main);
  border: 2px solid var(--maroon-main);
  border-radius: 6px;
  padding: 10px 26px;
  font-weight: 700;
  font-size: 0.92rem;
  transition: all 0.2s;
}
.btn-outline-maroon:hover { background: var(--maroon-main); color: var(--white); }

/* ── Stats bar ── */
.stats-bar {
  background: var(--maroon-main);
  color: var(--white);
  padding: 28px 0;
}
.stat-item { text-align: center; padding: 8px 16px; }
.stat-number {
  font-family: 'Lora', serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--gold-main);
  line-height: 1;
}
.stat-label { font-size: 0.82rem; opacity: 0.85; text-transform: uppercase; letter-spacing: 0.8px; margin-top: 4px; }

/* ── Cards ── */
.fewl-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
  height: 100%;
}
.fewl-card:hover { transform: translateY(-4px); box-shadow: 0 10px 30px rgba(140,29,64,0.12); }
.fewl-card .card-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--maroon-main), var(--gold-main));
}
.fewl-card .card-body { padding: 1.5rem; }
.fewl-card .card-icon {
  width: 48px; height: 48px;
  background: var(--maroon-light);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  color: var(--maroon-main);
  margin-bottom: 1rem;
}

/* ── Team cards ── */
.team-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
  height: 100%;
}
.team-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(140,29,64,0.1); }
.team-photo-wrap {
  width: 120px; height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--maroon-light);
  margin: 1.5rem auto 1rem;
  background: var(--maroon-pale);
  display: flex; align-items: center; justify-content: center;
}
.team-photo-wrap img { width: 100%; height: 100%; object-fit: cover; }
.team-photo-placeholder {
  font-size: 2.5rem;
  color: var(--maroon-border);
}
.team-name { font-family: 'Lora', serif; font-size: 1.1rem; font-weight: 700; margin-bottom: 2px; }
.team-role { font-size: 0.82rem; color: var(--maroon-main); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.team-project { font-size: 0.88rem; color: var(--text-light); padding: 0 1rem 1.2rem; line-height: 1.5; }
.team-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 12px;
  margin-bottom: 8px;
}
.badge-grad { background: var(--maroon-light); color: var(--maroon-main); }
.badge-undergrad { background: var(--gold-light); color: var(--gold-dark); }
.badge-postdoc { background: #e8f4f8; color: #1a6a8a; }

/* ── Publications ── */
.pub-entry {
  padding: 1.25rem 1.5rem;
  border-left: 4px solid var(--maroon-light);
  background: var(--white);
  border-radius: 0 8px 8px 0;
  margin-bottom: 1rem;
  transition: border-color 0.2s;
}
.pub-entry:hover { border-left-color: var(--maroon-main); }
.pub-entry .pub-authors { font-size: 0.88rem; color: var(--text-light); margin-bottom: 4px; }
.pub-entry .pub-title { font-weight: 700; font-size: 0.97rem; color: var(--text-dark); margin-bottom: 4px; }
.pub-entry .pub-journal { font-size: 0.88rem; font-style: italic; color: var(--text-mid); }
.pub-entry .pub-links { margin-top: 8px; }
.pub-links a {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  margin-right: 6px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.pub-doi { background: var(--maroon-light); color: var(--maroon-main); }
.pub-doi:hover { background: var(--maroon-main); color: var(--white); }
.pub-pdf { background: var(--gold-light); color: var(--gold-dark); }
.pub-pdf:hover { background: var(--gold-main); color: var(--maroon-dark); }
.pub-year-header {
  font-family: 'Lora', serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--maroon-main);
  border-bottom: 2px solid var(--maroon-light);
  padding-bottom: 8px;
  margin: 2rem 0 1rem;
}
.pub-type-header {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-light);
  margin: 1.5rem 0 0.75rem;
}
.pub-ug-star { color: var(--gold-dark); font-size: 0.85em; }

/* ── Research tabs ── */
.research-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: 25px;
  border: 2px solid var(--maroon-border);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--white);
  color: var(--text-mid);
  margin: 4px;
}
.research-pill:hover { border-color: var(--maroon-main); color: var(--maroon-main); }
.research-pill.active { background: var(--maroon-main); border-color: var(--maroon-main); color: var(--white); }
.research-section { display: none; }
.research-section.active { display: block; }

/* ── Course cards ── */
.course-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-left: 5px solid var(--maroon-main);
  border-radius: 0 10px 10px 0;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  transition: box-shadow 0.2s;
}
.course-card:hover { box-shadow: 0 4px 16px rgba(140,29,64,0.1); }
.course-code { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; color: var(--maroon-main); }
.course-name { font-family: 'Lora', serif; font-size: 1.05rem; font-weight: 700; margin: 2px 0; }
.course-meta { font-size: 0.85rem; color: var(--text-light); }
.course-syllabus-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.80rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 4px;
  background: var(--maroon-light);
  color: var(--maroon-main);
  text-decoration: none;
  transition: all 0.2s;
  margin-top: 8px;
}
.course-syllabus-btn:hover { background: var(--maroon-main); color: var(--white); }

/* ── Contact ── */
.contact-info-block {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-light);
}
.contact-icon {
  width: 40px; height: 40px;
  background: var(--maroon-light);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--maroon-main);
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.8px; color: var(--text-light); font-weight: 700; }
.contact-value { font-size: 0.97rem; color: var(--text-dark); font-weight: 600; }

/* ── Footer ── */
#footer {
  background: var(--maroon-dark);
  color: rgba(255,255,255,0.8);
  padding: 40px 0 20px;
}
#footer .footer-logo {
  font-family: 'Lora', serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
}
#footer .footer-logo span { color: var(--gold-main); }
#footer .footer-links a { color: rgba(255,255,255,0.7); font-size: 0.9rem; display: block; margin-bottom: 6px; transition: color 0.2s; }
#footer .footer-links a:hover { color: var(--gold-main); }
#footer .social-icons a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--white);
  margin-right: 6px;
  font-size: 1rem;
  transition: background 0.2s;
}
#footer .social-icons a:hover { background: var(--gold-main); color: var(--maroon-dark); }
#footer .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 30px; padding-top: 20px; font-size: 0.82rem; color: rgba(255,255,255,0.5); }

/* ── Section backgrounds ── */
.section-pale { background: var(--maroon-pale); }
.section-light { background: var(--maroon-light); }
section { padding: 70px 0; }

/* ── Utility ── */
.gold-accent { color: var(--gold-dark); font-weight: 700; }
.maroon-accent { color: var(--maroon-main); font-weight: 700; }
.page-hero {
  background: linear-gradient(135deg, var(--maroon-dark), var(--maroon-main));
  color: var(--white);
  padding: 60px 0 50px;
}
.page-hero h1 { color: var(--white); font-family: 'Lora', serif; font-size: 2.2rem; }
.page-hero p { opacity: 0.85; font-size: 1rem; }
.page-hero .breadcrumb-item, .page-hero .breadcrumb-item a { color: rgba(255,255,255,0.7); font-size: 0.85rem; }
.page-hero .breadcrumb-item.active { color: var(--gold-main); }
.page-hero .breadcrumb-divider { color: rgba(255,255,255,0.4); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero-section h1 { font-size: 2rem; }
  .stat-number { font-size: 1.8rem; }
  section { padding: 50px 0; }
}