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

:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --primary-light:#dbeafe;
  --primary-bg:#eff6ff;
  --secondary:#0f172a;
  --accent:#f59e0b;
  --accent-dark:#d97706;
  --gray-50:#f8fafc;
  --gray-100:#f1f5f9;
  --gray-200:#e2e8f0;
  --gray-300:#cbd5e1;
  --gray-400:#94a3b8;
  --gray-500:#64748b;
  --gray-600:#475569;
  --gray-700:#334155;
  --gray-800:#1e293b;
  --gray-900:#0f172a;
  --success:#10b981;
  --warning:#f59e0b;
  --danger:#ef4444;
  --radius:8px;
  --radius-lg:12px;
  --shadow:0 1px 3px rgba(0,0,0,.1),0 1px 2px rgba(0,0,0,.06);
  --shadow-md:0 4px 6px rgba(0,0,0,.07),0 2px 4px rgba(0,0,0,.06);
  --shadow-lg:0 10px 15px rgba(0,0,0,.1),0 4px 6px rgba(0,0,0,.05);
  --transition:.2s ease;
  --max-width:1200px;
  --header-height:64px;
  --font:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif
}

html{scroll-behavior:smooth}

body{
  font-family:var(--font);
  color:var(--gray-800);
  background:var(--gray-50);
  line-height:1.6;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  padding-top:var(--header-height)
}

img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-dark)}
ul{list-style:none}

.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 20px}

/* ===== HEADER ===== */
.header{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--header-height);
  background:#fff;
  border-bottom:1px solid var(--gray-200);
  z-index:1000;
  transition:box-shadow var(--transition)
}
.header.scrolled{box-shadow:var(--shadow-md)}
.header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:100%;
  gap:16px
}

.logo{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:1.25rem;
  font-weight:700;
  color:var(--secondary);
  white-space:nowrap;
  flex-shrink:0
}
.logo-icon{
  width:32px;height:32px;
  background:var(--primary);
  color:#fff;
  border-radius:6px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:.95rem;
  font-weight:800
}

/* Header search */
.header-search{
  display:none;
  flex:1;max-width:360px;
  position:relative
}
.header-search input{
  width:100%;
  padding:8px 36px 8px 14px;
  border:1px solid var(--gray-200);
  border-radius:20px;
  font-size:.85rem;
  outline:none;
  background:var(--gray-50);
  transition:border var(--transition);
  font-family:inherit
}
.header-search input:focus{border-color:var(--primary);background:#fff}
.header-search .hs-icon{
  position:absolute;
  right:12px;top:50%;
  transform:translateY(-50%);
  color:var(--gray-400);
  font-size:.85rem;
  pointer-events:none
}

/* Desktop nav */
.nav{display:none;align-items:center;gap:4px}
.nav a{
  padding:6px 12px;
  border-radius:var(--radius);
  font-size:.85rem;
  font-weight:500;
  color:var(--gray-600);
  transition:all var(--transition);
  white-space:nowrap
}
.nav a:hover,.nav a.active{background:var(--primary-light);color:var(--primary)}

/* Mobile toggle */
.mobile-toggle{
  display:flex;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding:4px;
  flex-shrink:0
}
.mobile-toggle span{
  display:block;
  width:22px;height:2px;
  background:var(--gray-700);
  border-radius:2px;
  transition:all var(--transition)
}
.mobile-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.mobile-toggle.active span:nth-child(2){opacity:0}
.mobile-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* Mobile nav overlay */
.mobile-nav{
  position:fixed;
  top:var(--header-height);
  left:0;right:0;
  background:#fff;
  padding:16px 20px;
  border-bottom:1px solid var(--gray-200);
  box-shadow:var(--shadow-md);
  transform:translateY(-100%);
  opacity:0;
  visibility:hidden;
  transition:all .3s ease;
  z-index:999;
  max-height:calc(100vh - var(--header-height));
  overflow-y:auto
}
.mobile-nav.open{transform:translateY(0);opacity:1;visibility:visible}
.mobile-nav a{
  display:block;
  padding:12px 16px;
  border-radius:var(--radius);
  font-size:.9rem;
  font-weight:500;
  color:var(--gray-700);
  border-bottom:1px solid var(--gray-100)
}
.mobile-nav a:last-child{border-bottom:none}
.mobile-nav a:hover,.mobile-nav a.active{background:var(--primary-light);color:var(--primary)}
.mobile-nav .mobile-search{margin-bottom:12px;display:block}
.mobile-nav .mobile-search input{
  width:100%;
  padding:10px 14px;
  border:1px solid var(--gray-200);
  border-radius:var(--radius);
  font-size:.9rem;
  outline:none;
  font-family:inherit
}

/* ===== HERO ===== */
.hero{
  padding:60px 0 50px;
  background:linear-gradient(135deg,var(--secondary) 0%,#1e40af 100%);
  color:#fff;
  text-align:center
}
.hero h1{font-size:clamp(1.6rem,5vw,3rem);font-weight:800;line-height:1.2;margin-bottom:14px}
.hero p{font-size:1rem;color:rgba(255,255,255,.85);max-width:600px;margin:0 auto 28px;line-height:1.7}
.hero-search{
  display:flex;
  max-width:520px;
  margin:0 auto;
  background:#fff;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-lg)
}
.hero-search input{
  flex:1;
  border:none;
  padding:14px 18px;
  font-size:.95rem;
  outline:none;
  color:var(--gray-800);
  font-family:inherit
}
.hero-search input::placeholder{color:var(--gray-400)}
.hero-search button{
  padding:14px 24px;
  background:var(--primary);
  color:#fff;
  border:none;
  font-size:.9rem;
  font-weight:600;
  cursor:pointer;
  transition:background var(--transition);
  white-space:nowrap;
  font-family:inherit
}
.hero-search button:hover{background:var(--primary-dark)}

/* Hero quick links */
.hero-quick{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:8px 20px;
  margin-top:24px;
  font-size:.85rem
}
.hero-quick a{color:rgba(255,255,255,.7);transition:color var(--transition)}
.hero-quick a:hover{color:#fff}

/* ===== PAGE HEADER (inner) ===== */
.page-header{
  background:linear-gradient(135deg,var(--secondary) 0%,#1e40af 100%);
  color:#fff;
  padding:50px 0 40px;
  text-align:center
}
.page-header h1{font-size:clamp(1.5rem,4vw,2.4rem);font-weight:800;margin-bottom:10px}
.page-header p{color:rgba(255,255,255,.8);font-size:.95rem;max-width:560px;margin:0 auto}

/* ===== BREADCRUMBS ===== */
.breadcrumbs{
  padding:10px 0;
  background:#fff;
  border-bottom:1px solid var(--gray-200);
  font-size:.8rem
}
.breadcrumbs a{color:var(--gray-400)}
.breadcrumbs a:hover{color:var(--primary)}
.breadcrumbs .current{color:var(--gray-600);font-weight:500}
.breadcrumbs .sep{color:var(--gray-300);margin:0 6px}

/* ===== SECTIONS ===== */
.section{padding:50px 0}
.section-title{font-size:1.5rem;font-weight:700;color:var(--secondary);margin-bottom:6px}
.section-subtitle{color:var(--gray-500);margin-bottom:32px;font-size:.95rem}
.section-header{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  margin-bottom:28px;
  flex-wrap:wrap;
  gap:12px
}
.section-header-left .section-title{margin-bottom:4px}
.section-header-left .section-subtitle{margin-bottom:0}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 20px;
  border-radius:var(--radius);
  font-size:.88rem;
  font-weight:600;
  border:none;
  cursor:pointer;
  transition:all var(--transition);
  font-family:inherit
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff}
.btn-outline{
  background:transparent;
  color:#fff;
  border:2px solid rgba(255,255,255,.3)
}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1);color:#fff}
.btn-link{color:var(--primary);font-weight:600;font-size:.88rem}
.btn-link:hover{color:var(--primary-dark)}
.btn-sm{padding:6px 14px;font-size:.82rem}

/* ===== BADGES ===== */
.badge{
  display:inline-block;
  padding:3px 10px;
  border-radius:20px;
  font-size:.75rem;
  font-weight:600
}
.badge-recruiting{background:#d1fae5;color:#065f46}
.badge-active{background:#dbeafe;color:#1e40af}
.badge-completed{background:#f1f5f9;color:#475569}

/* ===== CARD BASE ===== */
.card{
  background:#fff;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  transition:all var(--transition);
  overflow:hidden
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}

/* ===== STUDY CARDS ===== */
.studies-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px
}
.study-card{padding:20px;position:relative}
.study-card .sc-top{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.study-card .badge{margin-bottom:0}
.badge-healthy{background:#fef3c7;color:#92400e}
.study-card h3{font-size:1.05rem;font-weight:600;margin-bottom:6px;color:var(--secondary);line-height:1.35}
.study-card .meta{
  display:flex;
  flex-wrap:wrap;
  gap:6px 12px;
  margin-bottom:10px;
  font-size:.8rem;
  color:var(--gray-500)
}
.study-card .meta span{display:flex;align-items:center;gap:4px}
.study-card p{color:var(--gray-600);font-size:.88rem;margin-bottom:14px;line-height:1.6}
.study-card .card-footer{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:14px;
  border-top:1px solid var(--gray-100)
}
.study-card .reward{font-size:1.05rem;font-weight:700;color:var(--primary)}

/* ===== CATEGORY CARDS (Premium) ===== */
.categories-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px
}
.category-card{
  position:relative;
  padding:28px 20px 18px;
  background:#fff;
  border-radius:16px;
  box-shadow:0 1px 3px rgba(0,0,0,.07);
  transition:all .35s cubic-bezier(.4,0,.2,1);
  text-decoration:none;
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  border:1px solid var(--gray-100);
  overflow:hidden;
  outline:none
}
.category-card::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:linear-gradient(90deg,var(--primary),#7c3aed);
  opacity:0;
  transition:opacity .35s ease
}
.category-card:hover,.category-card:focus-visible{
  transform:translateY(-5px);
  box-shadow:0 12px 28px rgba(0,0,0,.1),0 4px 12px rgba(0,0,0,.06);
  border-color:var(--primary-light)
}
.category-card:hover::before,.category-card:focus-visible::before{opacity:1}
.category-card:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.category-card .cat-icon{
  width:48px;height:48px;
  background:linear-gradient(135deg,var(--primary-bg),#e0ecfe);
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:14px;
  transition:all .35s cubic-bezier(.4,0,.2,1);
  color:var(--primary);
  flex-shrink:0
}
.category-card .cat-icon svg{width:24px;height:24px}
.category-card .cat-emoji{font-size:1.4rem;line-height:1}
.category-card:hover .cat-icon,.category-card:focus-visible .cat-icon{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;
  transform:scale(1.08) rotate(-4deg);
  box-shadow:0 4px 12px rgba(37,99,235,.3)
}
.category-card h4{
  font-size:.95rem;
  font-weight:700;
  color:var(--secondary);
  margin-bottom:4px;
  line-height:1.3
}
.category-card .cat-desc{
  font-size:.78rem;
  color:var(--gray-400);
  margin-bottom:10px;
  line-height:1.4;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden
}
.category-card .cat-count{
  font-size:.78rem;
  font-weight:500;
  color:var(--gray-500);
  background:var(--gray-50);
  padding:3px 12px;
  border-radius:20px;
  margin-bottom:12px
}
.category-card .cat-link{
  font-size:.8rem;
  font-weight:600;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:4px;
  transition:gap .3s ease;
  padding-top:14px;
  border-top:1px solid var(--gray-100);
  width:100%;
  justify-content:center;
  margin-top:auto
}
.category-card:hover .cat-link,.category-card:focus-visible .cat-link{gap:8px}

/* ===== STATE CARDS ===== */
.states-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:10px
}
.state-card{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 14px;
  background:#fff;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:all var(--transition);
  cursor:pointer
}
.state-card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}
.state-card .state-name{font-weight:600;color:var(--gray-700);font-size:.85rem}
.state-card .state-count{font-size:.78rem;color:var(--gray-400);background:var(--gray-100);padding:2px 8px;border-radius:10px}

/* ===== CITY CARDS ===== */
.cities-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:14px
}
.city-card{
  padding:16px;
  background:#fff;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:all var(--transition)
}
.city-card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}
.city-card h4{font-size:.95rem;font-weight:600;color:var(--secondary);margin-bottom:3px}
.city-card .city-state{font-size:.82rem;color:var(--gray-400);margin-bottom:6px}
.city-card .city-count{font-size:.82rem;color:var(--primary);font-weight:500}

/* ===== HOW IT WORKS ===== */
.how-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
  max-width:900px;
  margin:0 auto
}
.how-step{
  text-align:center;
  padding:30px 20px;
  background:#fff;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  transition:all .35s cubic-bezier(.4,0,.2,1)
}
.how-step:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md)
}
.how-step .how-icon{
  width:60px;height:60px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin:0 auto 16px;
  transition:all .35s cubic-bezier(.4,0,.2,1)
}
.how-step .how-icon svg{width:28px;height:28px}
.how-step:hover .how-icon{
  transform:scale(1.1) rotate(-5deg);
  box-shadow:0 6px 20px rgba(37,99,235,.3)
}
.how-step h3{font-size:1.05rem;font-weight:700;color:var(--secondary);margin-bottom:8px}
.how-step p{font-size:.85rem;color:var(--gray-500);line-height:1.6;max-width:260px;margin:0 auto}

/* ===== GUIDE CARDS ===== */
.guides-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px
}
.guide-card{padding:24px}
.guide-card .gc-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:12px
}
.guide-card .guide-category{
  font-size:.75rem;
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:.5px;
  color:var(--primary);
  background:var(--primary-light);
  padding:3px 10px;
  border-radius:20px
}
.guide-card .guide-readtime{font-size:.78rem;color:var(--gray-400)}
.guide-card h3{font-size:1.05rem;font-weight:600;margin-bottom:8px;color:var(--secondary);line-height:1.35}
.guide-card p{color:var(--gray-600);font-size:.88rem;margin-bottom:14px;line-height:1.6}
.guide-card .guide-footer{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:14px;
  border-top:1px solid var(--gray-100)
}
.guide-card .guide-author{font-size:.82rem;color:var(--gray-400)}
.guide-card .guide-cta{font-size:.82rem;font-weight:600;color:var(--primary)}
.guide-card.featured{border-left:4px solid var(--primary)}

/* ===== STATS ===== */
.stats{background:#fff;border-bottom:1px solid var(--gray-200)}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  text-align:center
}
.stat-item{padding:28px 16px;border-bottom:1px solid var(--gray-100)}
.stat-item:nth-child(odd){border-right:1px solid var(--gray-100)}
.stat-item:nth-last-child(-n+2){border-bottom:none}
.stat-number{font-size:1.6rem;font-weight:800;color:var(--primary);margin-bottom:2px}
.stat-label{font-size:.82rem;color:var(--gray-500);font-weight:500}

/* ===== NEWSLETTER ===== */
.newsletter{
  background:linear-gradient(135deg,var(--primary) 0%,#7c3aed 100%);
  color:#fff;
  text-align:center;
  padding:50px 0
}
.newsletter h2{font-size:1.4rem;font-weight:700;margin-bottom:10px}
.newsletter p{color:rgba(255,255,255,.85);margin-bottom:24px;font-size:.95rem}
.newsletter-form{
  display:flex;
  flex-direction:column;
  max-width:420px;
  margin:0 auto;
  border-radius:var(--radius);
  overflow:hidden;
  gap:10px
}
.newsletter-form input{
  padding:12px 16px;
  border:none;
  font-size:.9rem;
  outline:none;
  border-radius:var(--radius);
  font-family:inherit
}
.newsletter-form button{
  padding:12px 20px;
  background:var(--accent);
  color:var(--secondary);
  border:none;
  font-size:.9rem;
  font-weight:600;
  cursor:pointer;
  transition:background var(--transition);
  border-radius:var(--radius);
  font-family:inherit
}
.newsletter-form button:hover{background:var(--accent-dark)}

/* ===== FAQ ===== */
.faq-list{max-width:720px;margin:0 auto}
.faq-item{
  background:#fff;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  margin-bottom:10px;
  overflow:hidden
}
.faq-question{
  width:100%;
  padding:16px 18px;
  background:none;
  border:none;
  text-align:left;
  font-size:.9rem;
  font-weight:600;
  color:var(--gray-700);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-family:inherit;
  line-height:1.4
}
.faq-question:hover{color:var(--primary)}
.faq-question .faq-icon{
  font-size:.7rem;
  color:var(--gray-400);
  flex-shrink:0;
  transition:transform var(--transition)
}
.faq-item.open .faq-question .faq-icon{transform:rotate(180deg)}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease
}
.faq-answer-inner{
  padding:0 18px 16px;
  font-size:.85rem;
  color:var(--gray-600);
  line-height:1.7
}

/* ===== CTA SECTION ===== */
.cta-section{
  background:linear-gradient(135deg,var(--secondary) 0%,#1e40af 100%);
  color:#fff;
  text-align:center;
  padding:50px 0
}
.cta-section h2{font-size:1.5rem;font-weight:700;margin-bottom:10px}
.cta-section p{color:rgba(255,255,255,.85);margin-bottom:24px;font-size:.95rem}
.cta-section .btn-group{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ===== FILTER SIDEBAR LAYOUT ===== */
.trials-layout{
  display:grid;
  grid-template-columns:1fr;
  gap:24px
}
.filter-sidebar{
  background:#fff;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  padding:20px;
  height:fit-content
}
.filter-sidebar h3{font-size:.95rem;font-weight:700;color:var(--secondary);margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--gray-100)}
.filter-group{margin-bottom:16px}
.filter-group:last-child{margin-bottom:0}
.filter-group label{display:block;font-size:.82rem;font-weight:600;color:var(--gray-600);margin-bottom:6px}
.filter-group select,.filter-group input{
  width:100%;
  padding:9px 12px;
  border:1px solid var(--gray-200);
  border-radius:var(--radius);
  font-size:.85rem;
  background:#fff;
  outline:none;
  font-family:inherit
}
.filter-group select:focus,.filter-group input:focus{border-color:var(--primary)}
.filter-actions{display:flex;gap:8px;margin-top:16px}
.filter-actions .btn{flex:1;justify-content:center;font-size:.82rem}

/* ===== PAGINATION ===== */
.pagination{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  margin-top:32px;
  flex-wrap:wrap
}
.pagination a,.pagination span{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:36px;height:36px;
  padding:0 10px;
  border-radius:var(--radius);
  font-size:.85rem;
  font-weight:500;
  color:var(--gray-600);
  background:#fff;
  border:1px solid var(--gray-200);
  transition:all var(--transition)
}
.pagination a:hover{border-color:var(--primary);color:var(--primary)}
.pagination .active{background:var(--primary);color:#fff;border-color:var(--primary)}
.pagination .disabled{opacity:.4;pointer-events:none}
.pagination .dots{border:none;background:none;min-width:auto;padding:0 4px}

/* ===== ALPHABETICAL NAV ===== */
.alpha-nav{
  display:flex;
  flex-wrap:wrap;
  gap:4px;
  margin-bottom:20px;
  justify-content:center
}
.alpha-nav a{
  width:30px;height:30px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:4px;
  font-size:.78rem;
  font-weight:600;
  color:var(--gray-500);
  background:var(--gray-100);
  transition:all var(--transition)
}
.alpha-nav a:hover,.alpha-nav a.active{background:var(--primary);color:#fff}
.alpha-nav a.all{width:auto;padding:0 10px}

/* ===== SIDEBAR (generic) ===== */
.sidebar{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:20px}
.sidebar h3{font-size:.9rem;font-weight:700;color:var(--secondary);margin-bottom:12px}
.sidebar-links a{
  display:block;
  padding:7px 0;
  font-size:.85rem;
  color:var(--gray-600);
  border-bottom:1px solid var(--gray-100)
}
.sidebar-links a:last-child{border-bottom:none}
.sidebar-links a:hover{color:var(--primary)}

/* ===== SOCIAL ICONS ===== */
.social-links{
  display:flex;
  gap:10px
}
.social-links a{
  width:36px;height:36px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:rgba(255,255,255,.1);
  color:rgba(255,255,255,.6);
  font-size:.9rem;
  transition:all var(--transition)
}
.social-links a:hover{background:var(--primary);color:#fff}

/* ===== FOOTER ===== */
.footer{
  background:var(--secondary);
  color:rgba(255,255,255,.8);
  padding:50px 0 0;
  margin-top:auto
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:30px;
  padding-bottom:30px;
  border-bottom:1px solid rgba(255,255,255,.1)
}
.footer-brand .logo{color:#fff;margin-bottom:12px}
.footer-brand p{font-size:.85rem;line-height:1.7;color:rgba(255,255,255,.5);max-width:280px}
.footer h4{color:#fff;font-size:.88rem;font-weight:600;margin-bottom:12px}
.footer-links a{
  display:block;
  padding:4px 0;
  font-size:.83rem;
  color:rgba(255,255,255,.5);
  transition:color var(--transition)
}
.footer-links a:hover{color:#fff}
.footer-bottom{
  padding:16px 0;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  font-size:.8rem;
  color:rgba(255,255,255,.35)
}
.footer-bottom-links{display:flex;gap:16px}
.footer-bottom-links a{color:rgba(255,255,255,.35);font-size:.8rem}
.footer-bottom-links a:hover{color:#fff}
.footer-disclaimer{
  margin-top:12px;
  font-size:.72rem;
  color:rgba(255,255,255,.3);
  text-align:center;
  line-height:1.5;
  max-width:700px;
  margin-left:auto;
  margin-right:auto
}

/* ===== ABOUT ===== */
.about-section{display:grid;grid-template-columns:1fr;gap:30px}
.about-section h2{font-size:1.4rem;font-weight:700;color:var(--secondary);margin-bottom:12px}
.about-section p{color:var(--gray-600);margin-bottom:14px;line-height:1.8;font-size:.92rem}
.values-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:30px}

/* ===== CONTACT ===== */
.contact-grid{display:grid;grid-template-columns:1fr;gap:30px}
.contact-form{background:#fff;padding:24px;border-radius:var(--radius-lg);box-shadow:var(--shadow)}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:.85rem;font-weight:600;color:var(--gray-700);margin-bottom:5px}
.form-group input,.form-group textarea,.form-group select{
  width:100%;
  padding:10px 12px;
  border:1px solid var(--gray-200);
  border-radius:var(--radius);
  font-size:.9rem;
  font-family:inherit;
  outline:none;
  transition:border var(--transition)
}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.form-group textarea{resize:vertical;min-height:100px}
.contact-info h3{font-size:1.25rem;font-weight:700;color:var(--secondary);margin-bottom:12px}
.contact-info p{color:var(--gray-600);margin-bottom:20px;font-size:.92rem;line-height:1.7}
.contact-detail{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px}
.contact-detail .cd-icon{
  width:40px;height:40px;
  background:var(--primary-light);
  color:var(--primary);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  font-size:1rem
}
.contact-detail .cd-label{font-size:.78rem;color:var(--gray-400);margin-bottom:2px}
.contact-detail .cd-value{font-weight:600;color:var(--gray-700);font-size:.9rem}

/* ===== CONTENT PAGES ===== */
.content-page{padding:40px 0}
.content-page .content{max-width:760px;margin:0 auto}
.content-page .content h2{font-size:1.3rem;font-weight:700;color:var(--secondary);margin-top:28px;margin-bottom:10px}
.content-page .content h3{font-size:1.1rem;font-weight:600;color:var(--gray-700);margin-top:22px;margin-bottom:8px}
.content-page .content p{margin-bottom:14px;color:var(--gray-600);line-height:1.8;font-size:.92rem}
.content-page .content ul{margin-bottom:14px;padding-left:22px}
.content-page .content ul li{list-style:disc;margin-bottom:6px;color:var(--gray-600);line-height:1.7;font-size:.92rem}

/* ===== 404 ===== */
.page-404{text-align:center;padding:80px 20px}
.page-404 .code{font-size:6rem;font-weight:800;color:var(--primary);line-height:1;margin-bottom:10px}
.page-404 h1{font-size:1.5rem;font-weight:700;color:var(--secondary);margin-bottom:10px}
.page-404 p{color:var(--gray-500);margin-bottom:28px;font-size:.95rem}

/* ===== EMPTY STATE ===== */
.empty-state{text-align:center;padding:50px 20px}
.empty-state .es-icon{font-size:2.5rem;margin-bottom:12px}
.empty-state h3{font-size:1.1rem;color:var(--gray-600);margin-bottom:6px}
.empty-state p{color:var(--gray-400);font-size:.88rem}

/* ===== LOADING ===== */
.loading{text-align:center;padding:50px 20px;color:var(--gray-400)}
.spinner{
  display:block;
  width:32px;height:32px;
  border:3px solid var(--gray-200);
  border-top-color:var(--primary);
  border-radius:50%;
  margin:12px auto;
  animation:spin .7s linear infinite
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== BACK TO TOP ===== */
.back-to-top{
  position:fixed;
  bottom:24px;right:24px;
  width:40px;height:40px;
  background:var(--primary);
  color:#fff;
  border:none;
  border-radius:50%;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.1rem;
  box-shadow:var(--shadow-md);
  opacity:0;
  visibility:hidden;
  transition:all var(--transition);
  z-index:900
}
.back-to-top.visible{opacity:1;visibility:visible}
.back-to-top:hover{background:var(--primary-dark);transform:translateY(-2px)}

/* ===== VALUE CARDS (about) ===== */
.value-card{text-align:center;padding:28px 20px;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow)}
.value-card .value-icon{
  width:48px;height:48px;
  background:var(--primary-light);
  color:var(--primary);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.3rem;
  margin:0 auto 12px
}
.value-card h3{font-size:1rem;font-weight:600;margin-bottom:6px}
.value-card p{font-size:.85rem;color:var(--gray-500);line-height:1.6}

/* ===== SEARCH DROPDOWN ===== */
.header-search{position:relative}
.search-dropdown{
  position:absolute;
  top:calc(100% + 4px);
  left:0;right:0;
  background:#fff;
  border-radius:var(--radius);
  box-shadow:var(--shadow-lg);
  border:1px solid var(--gray-200);
  max-height:320px;
  overflow-y:auto;
  opacity:0;
  visibility:hidden;
  transform:translateY(-4px);
  transition:all .2s ease;
  z-index:100
}
.search-dropdown.open{opacity:1;visibility:visible;transform:translateY(0)}
.search-dropdown .sd-item{
  display:flex;
  flex-direction:column;
  padding:10px 14px;
  border-bottom:1px solid var(--gray-100);
  color:var(--gray-700);
  text-decoration:none;
  transition:background var(--transition)
}
.search-dropdown .sd-item:last-child{border-bottom:none}
.search-dropdown .sd-item:hover{background:var(--primary-bg)}
.search-dropdown .sd-title{font-size:.85rem;font-weight:600;margin-bottom:2px}
.search-dropdown .sd-meta{font-size:.75rem;color:var(--gray-400)}
.search-dropdown .sd-empty{padding:14px;text-align:center;color:var(--gray-400);font-size:.85rem}

/* ===== TRIALS TOOLBAR ===== */
.trials-main{min-width:0}
.trials-toolbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:20px;
  background:#fff;
  padding:12px 16px;
  border-radius:var(--radius);
  box-shadow:var(--shadow)
}
.trials-toolbar-left{display:flex;align-items:center;gap:12px}
.trials-toolbar-right{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.results-count{font-size:.85rem;color:var(--gray-500);font-weight:500}
.toolbar-select{
  padding:6px 10px;
  border:1px solid var(--gray-200);
  border-radius:var(--radius);
  font-size:.82rem;
  background:#fff;
  outline:none;
  font-family:inherit;
  color:var(--gray-700);
  cursor:pointer
}
.toolbar-select:focus{border-color:var(--primary)}

/* ===== STUDY DETAIL ===== */
.study-detail{
  background:#fff;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  padding:28px 24px;
  animation:fadeIn .3s ease
}
.study-detail .btn-link{display:inline-block;margin-bottom:20px;font-size:.9rem}
.study-detail .sd-header .badge{margin-bottom:12px}
.study-detail .sd-header h1{font-size:1.4rem;font-weight:700;color:var(--secondary);margin-bottom:16px;line-height:1.35}
.study-detail .sd-meta{display:grid;grid-template-columns:1fr;gap:8px 20px;margin-bottom:20px}
.study-detail .sd-meta-item{font-size:.85rem;color:var(--gray-600)}
.study-detail .sd-meta-item strong{color:var(--gray-700)}
.study-detail .sd-reward{font-size:1.6rem;font-weight:800;color:var(--primary);margin-bottom:20px}
.study-detail .sd-description h2{font-size:1.15rem;font-weight:700;color:var(--secondary);margin-bottom:10px}
.study-detail .sd-description p{color:var(--gray-600);line-height:1.8;font-size:.92rem;margin-bottom:24px}
.study-detail .sd-related h2{font-size:1.15rem;font-weight:700;color:var(--secondary);margin-bottom:16px}
.study-card.compact{padding:14px}
.study-card.compact h3{font-size:.9rem}
.study-card.compact .meta{margin-bottom:6px}
.study-card.compact .card-footer{padding-top:8px}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.study-card,.guide-card,.state-card,.city-card,.category-card{animation:fadeIn .3s ease}

/* ===== STATE/CITY CARDS AS LINKS ===== */
.state-card,.city-card{text-decoration:none;color:inherit;display:flex}
.state-card:hover .state-name{color:var(--primary)}

/* ===== SEARCH TOGGLE (header) ===== */
.search-toggle{
  display:flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  background:none;
  border:none;
  cursor:pointer;
  color:var(--gray-500);
  font-size:1rem;
  border-radius:50%;
  transition:all var(--transition);
  flex-shrink:0
}
.search-toggle:hover{background:var(--gray-100);color:var(--primary)}

/* ===== SKIP LINK ===== */
.skip-link{
  position:absolute;
  top:-100%;
  left:50%;
  transform:translateX(-50%);
  z-index:10000;
  padding:8px 16px;
  background:var(--primary);
  color:#fff;
  border-radius:0 0 var(--radius) var(--radius);
  font-size:.85rem;
  font-weight:600;
  text-decoration:none;
  white-space:nowrap
}
.skip-link:focus{top:0;outline:none}
*:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.nav a[aria-current="page"]{background:var(--primary-light);color:var(--primary)}

/* ===== MEDIA QUERIES ===== */

/* sm (576px) */
@media(min-width:576px){
  .studies-grid{grid-template-columns:repeat(2,1fr)}
  .guides-grid{grid-template-columns:repeat(2,1fr)}
  .cities-grid{grid-template-columns:repeat(2,1fr)}
  .categories-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .states-grid{grid-template-columns:repeat(3,1fr)}
  .newsletter-form{flex-direction:row;border-radius:var(--radius-lg)}
  .newsletter-form input{border-radius:0}
  .newsletter-form button{border-radius:0}
  .stats-grid{grid-template-columns:repeat(4,1fr)}
  .stat-item{border-right:1px solid var(--gray-100);border-bottom:none;padding:32px 16px}
  .stat-item:nth-child(odd){border-right:1px solid var(--gray-100)}
  .stat-item:last-child{border-right:none}
  .stat-item:nth-last-child(-n+2){border-bottom:none}
  .footer-bottom{flex-direction:row;justify-content:space-between}
  .values-grid{grid-template-columns:repeat(3,1fr)}
  .how-grid{grid-template-columns:repeat(2,1fr);gap:24px}
}

/* md (768px) */
@media(min-width:768px){
  .header-search{display:block}
  .search-toggle{display:none}
  .mobile-toggle,.mobile-nav{display:none}
  .nav{display:flex}
  .hero{padding:80px 0 60px}
  .hero h1{font-size:clamp(1.8rem,4vw,2.8rem)}
  .section{padding:60px 0}
  .section-title{font-size:1.6rem}
  .studies-grid{grid-template-columns:repeat(2,1fr)}
  .guides-grid{grid-template-columns:repeat(2,1fr)}
  .categories-grid{grid-template-columns:repeat(3,1fr);gap:20px}
  .states-grid{grid-template-columns:repeat(4,1fr)}
  .cities-grid{grid-template-columns:repeat(3,1fr)}
  .trials-layout{grid-template-columns:280px 1fr}
  .study-detail .sd-meta{grid-template-columns:1fr 1fr}
  .about-section{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
  .page-header{padding:60px 0 45px}
  .page-header h1{font-size:clamp(1.6rem,3vw,2.2rem)}
  .newsletter h2{font-size:1.6rem}
  .cta-section h2{font-size:1.6rem}
  .cta-section{padding:60px 0}
}

/* lg (992px) */
@media(min-width:992px){
  .container{padding:0 30px}
  .studies-grid{grid-template-columns:repeat(3,1fr)}
  .guides-grid{grid-template-columns:repeat(3,1fr)}
  .categories-grid{grid-template-columns:repeat(4,1fr);gap:20px}
  .states-grid{grid-template-columns:repeat(5,1fr)}
  .cities-grid{grid-template-columns:repeat(3,1fr)}
  .values-grid{grid-template-columns:repeat(3,1fr);gap:24px}
  .how-grid{grid-template-columns:repeat(4,1fr);gap:24px}
  .hero{padding:90px 0 70px}
}

/* xl (1200px) */
@media(min-width:1200px){
  .states-grid{grid-template-columns:repeat(6,1fr)}
  .cities-grid{grid-template-columns:repeat(4,1fr)}
  .categories-grid{grid-template-columns:repeat(5,1fr);gap:20px}
}