/* RheumaScore Modern Facelift v3 — DNAI */
/* Layered on top of existing styles */

:root {
  --bg: #09090b !important;
  --bg2: #0f0f13 !important;
  --card: rgba(255,255,255,0.03) !important;
  --card-hover: rgba(255,255,255,0.06) !important;
  --card-active: rgba(255,255,255,0.08) !important;
  --border: rgba(255,255,255,0.06) !important;
  --border-light: rgba(255,255,255,0.1) !important;
  --accent: #8b5cf6 !important;
  --accent-soft: rgba(139,92,246,0.08) !important;
  --accent-glow: rgba(139,92,246,0.25) !important;
  --teal: #14b8a6 !important;
  --teal-soft: rgba(20,184,166,0.06) !important;
  --teal-glow: rgba(20,184,166,0.15) !important;
  --green: #10b981 !important;
  --pink: #ec4899 !important;
  --pink-soft: rgba(236,72,153,0.06) !important;
  --text: #fafafa !important;
  --text-secondary: #a1a1aa !important;
  --text-dim: #52525b !important;
  --glass: rgba(9,9,11,0.8) !important;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --serif: 'Inter', -apple-system, sans-serif;
  --radius: 12px;
  --radius-lg: 16px;
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
}

[data-theme='light'] {
  --bg: #f7f8fb !important; --bg2: #eef0f5 !important;
  --card: #ffffff !important; --card-hover: #f8f9fc !important;
  --card-active: #eef0f5 !important;
  --border: rgba(0,0,0,0.06) !important; --border-light: rgba(0,0,0,0.1) !important;
  --accent: #7c3aed !important; --accent-soft: rgba(124,58,237,0.06) !important;
  --accent-glow: rgba(124,58,237,0.12) !important;
  --teal: #0d9488 !important; --teal-soft: rgba(13,148,136,0.05) !important;
  --text: #18181b !important; --text-secondary: #52525b !important;
  --text-dim: #a1a1aa !important; --glass: rgba(255,255,255,0.9) !important;
}

html { scroll-behavior: smooth; }
body { overflow-x: hidden; }
.container { max-width: 1000px; }

/* ── Hero Animated Background ── */
.hero-bg {
  position: absolute; top: 0; left: 0; right: 0; height: 700px;
  overflow: hidden; z-index: 0; pointer-events: none;
}
.hero-bg::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 200px;
  background: linear-gradient(to top, var(--bg), transparent);
}
.mesh-gradient {
  position: absolute; width: 100%; height: 100%;
  background:
    radial-gradient(ellipse 80% 60% at 20% 30%, rgba(139,92,246,0.15), transparent),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(20,184,166,0.12), transparent),
    radial-gradient(ellipse 70% 60% at 50% 80%, rgba(59,130,246,0.08), transparent),
    radial-gradient(ellipse 40% 40% at 70% 60%, rgba(236,72,153,0.06), transparent);
  animation: meshMove 20s ease-in-out infinite alternate;
}
@keyframes meshMove {
  0% { transform: scale(1) translate(0, 0); }
  33% { transform: scale(1.05) translate(-2%, 1%); }
  66% { transform: scale(1.02) translate(1%, -1%); }
  100% { transform: scale(1) translate(-1%, 2%); }
}
.grid-overlay {
  position: absolute; width: 100%; height: 100%;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
}
[data-theme='light'] .grid-overlay {
  background-image:
    linear-gradient(rgba(0,0,0,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.02) 1px, transparent 1px);
}
.particles { position: absolute; width: 100%; height: 100%; opacity: 0.4; }
.particle {
  position: absolute; width: 3px; height: 3px; border-radius: 50%;
  background: var(--accent); animation: float linear infinite;
}
.particle:nth-child(1) { left: 10%; top: 20%; animation-duration: 8s; opacity: 0.6; }
.particle:nth-child(2) { left: 30%; top: 40%; animation-duration: 12s; opacity: 0.4; width: 2px; height: 2px; background: var(--teal); }
.particle:nth-child(3) { left: 60%; top: 15%; animation-duration: 10s; opacity: 0.5; }
.particle:nth-child(4) { left: 80%; top: 50%; animation-duration: 14s; opacity: 0.3; width: 4px; height: 4px; background: var(--teal); }
.particle:nth-child(5) { left: 45%; top: 70%; animation-duration: 9s; opacity: 0.5; }
.particle:nth-child(6) { left: 70%; top: 30%; animation-duration: 11s; opacity: 0.4; width: 2px; height: 2px; }
.particle:nth-child(7) { left: 20%; top: 60%; animation-duration: 13s; opacity: 0.3; background: var(--pink); }
.particle:nth-child(8) { left: 90%; top: 10%; animation-duration: 15s; opacity: 0.3; background: var(--teal); }
@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
  25% { transform: translateY(-30px) translateX(10px); opacity: 0.6; }
  50% { transform: translateY(-15px) translateX(-5px); opacity: 0.4; }
  75% { transform: translateY(-40px) translateX(15px); opacity: 0.5; }
}

/* ── Nav upgrade ── */
.nav-bar {
  backdrop-filter: blur(20px) saturate(1.5) !important;
  background: var(--glass) !important;
}
.nav-logo {
  font-family: var(--sans) !important; font-weight: 800 !important;
  letter-spacing: -0.5px !important;
}
.nav-logo .logo-mark {
  width: 32px !important; height: 32px !important; border-radius: 8px !important;
  background: linear-gradient(135deg, var(--accent), var(--teal)) !important;
  box-shadow: 0 0 20px var(--accent-glow) !important;
}
.logo-gradient {
  background: linear-gradient(135deg, var(--accent), var(--teal));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-menu-trigger { border-radius: 8px !important; }
.nav-menu-trigger:hover {
  background: var(--accent-soft) !important; color: var(--accent) !important;
  border-color: rgba(139,92,246,0.3) !important;
}
.nav-links {
  background: var(--bg2) !important; backdrop-filter: blur(20px) !important;
  border-radius: var(--radius) !important;
}
.theme-toggle { width: 32px !important; height: 32px !important; }

/* ── Hero upgrade ── */
.hero { padding: 80px 0 40px !important; position: relative; z-index: 1; }
.hero-eyebrow {
  color: var(--teal) !important;
  padding: 6px 16px !important; border-radius: 20px !important;
  background: rgba(20,184,166,0.08) !important;
  border: 1px solid rgba(20,184,166,0.15) !important;
  letter-spacing: 2.5px !important;
}
.hero-eyebrow .dot { box-shadow: 0 0 8px var(--green) !important; }
.hero h1 {
  font-family: var(--sans) !important;
  font-size: 4rem !important; font-weight: 900 !important;
  letter-spacing: -2.5px !important;
  background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.7) 50%, var(--accent) 100%) !important;
  -webkit-background-clip: text !important; -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
}
[data-theme='light'] .hero h1 {
  background: linear-gradient(135deg, #18181b 0%, #3f3f46 50%, var(--accent) 100%) !important;
  -webkit-background-clip: text !important; background-clip: text !important;
}
.hero .subtitle { font-size: 1.05rem !important; max-width: 560px !important; margin-bottom: 32px !important; }
.hero .subtitle strong {
  background: linear-gradient(135deg, var(--accent), var(--teal)) !important;
  -webkit-background-clip: text !important; -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
}

/* FHE steps */
.fhe-step {
  border-radius: var(--radius) !important; padding: 12px 18px !important;
  backdrop-filter: blur(10px);
}
.fhe-step:hover { border-color: var(--accent-glow) !important; background: var(--accent-soft) !important; }
.fhe-step .step-icon { border-radius: 8px !important; width: 28px !important; height: 28px !important; }

/* Trust badges */
.trust-badge {
  border-radius: 20px !important; padding: 5px 14px !important;
  transition: all var(--transition) !important;
}
.trust-badge:hover { border-color: var(--border-light) !important; }

/* CTA buttons */
.action-links { gap: 12px !important; }
.action-link {
  font-weight: 600 !important; padding: 10px 24px !important;
  border-radius: 10px !important;
}
.action-link:first-child {
  background: linear-gradient(135deg, var(--accent), #6d28d9) !important;
  color: white !important; border: none !important;
  box-shadow: 0 0 20px var(--accent-glow) !important;
}
.action-link:first-child:hover {
  transform: translateY(-2px) scale(1.02) !important;
  box-shadow: 0 4px 30px var(--accent-glow) !important;
}
.action-link:last-child:hover {
  border-color: var(--accent) !important; color: var(--accent) !important;
  background: var(--accent-soft) !important;
}

/* ── Daily Challenge ── */
.daily-challenge {
  border-radius: var(--radius-lg) !important; backdrop-filter: blur(10px);
  position: relative !important; overflow: hidden !important;
}
.daily-challenge::before {
  content: '' !important; position: absolute !important; top: 0 !important; left: 0 !important; right: 0 !important; height: 2px !important;
  background: linear-gradient(90deg, var(--accent), var(--teal), var(--accent)) !important;
  background-size: 200% 100% !important;
  animation: shimmer 3s ease-in-out infinite !important;
}
@keyframes shimmer { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }
.daily-challenge:hover { transform: translateY(-1px) !important; }
.daily-challenge-label { font-family: var(--sans) !important; font-weight: 700 !important; }
.daily-challenge-label .badge {
  border-radius: 20px !important; padding: 3px 10px !important;
  background: linear-gradient(135deg, var(--accent), var(--teal)) !important;
}
.daily-challenge-cta:hover { color: var(--teal) !important; }

/* ── Stats ── */
.stats-bar { margin: 24px 0 !important; }
.stat {
  padding: 24px 12px !important; border-radius: var(--radius) !important;
  backdrop-filter: blur(10px); position: relative !important; overflow: hidden !important;
  transition: all var(--transition) !important;
}
.stat::after {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 40px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: opacity 0.3s;
}
.stat:hover { transform: translateY(-2px) !important; }
.stat:hover::after { opacity: 1; }
.stat .num {
  font-family: var(--sans) !important; font-size: 1.8rem !important;
  font-weight: 900 !important; letter-spacing: -1px !important;
  animation: countUp 0.6s ease-out backwards;
}
.stat:nth-child(1) .num { animation-delay: 0.1s; }
.stat:nth-child(2) .num { animation-delay: 0.2s; }
.stat:nth-child(3) .num { animation-delay: 0.3s; }
.stat:nth-child(4) .num { animation-delay: 0.4s; }
@keyframes countUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.stat .num.highlight-green { text-shadow: 0 0 20px rgba(16,185,129,0.3) !important; }
.stat .label { letter-spacing: 1px !important; margin-top: 6px !important; }

/* ── Disease cards ── */
.disease-card {
  border-radius: var(--radius) !important; padding: 22px 20px 18px !important;
  backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1) !important;
}
.disease-card:hover {
  border-color: rgba(139,92,246,0.2) !important;
  transform: translateY(-3px) !important;
  box-shadow: 0 8px 30px rgba(139,92,246,0.1) !important;
}
.disease-card .category-indicator {
  width: 8px !important; height: 8px !important;
  box-shadow: 0 0 8px var(--accent-glow);
}
.disease-card .name { font-family: var(--sans) !important; font-weight: 700 !important; }
.disease-card .count { border-radius: 20px !important; padding: 4px 10px !important; }
.disease-card .tag { border-radius: 20px !important; padding: 2px 8px !important; }
.disease-card.pediatric .category-indicator { box-shadow: 0 0 8px rgba(236,72,153,0.3) !important; }

/* Section labels */
.section-label {
  font-family: var(--sans) !important; font-weight: 700 !important;
  text-transform: uppercase !important; letter-spacing: 1px !important;
  font-size: 0.82rem !important; margin: 36px 0 16px !important;
}
.section-label::after {
  background: linear-gradient(90deg, var(--border-light), transparent) !important;
}

/* ── Score cards ── */
.score-card {
  border-radius: var(--radius) !important;
  backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1) !important;
}
.score-card:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 4px 20px var(--accent-glow) !important;
}
.score-card.active { box-shadow: 0 0 20px var(--accent-glow) !important; }

/* ── Calc & Result ── */
.calc-panel { border-radius: var(--radius-lg) !important; backdrop-filter: blur(10px); }
.calc-title { font-family: var(--sans) !important; font-weight: 700 !important; }
.compute-btn {
  background: linear-gradient(135deg, var(--accent), #6d28d9) !important;
  border-radius: 10px !important; font-weight: 700 !important;
  box-shadow: 0 4px 20px var(--accent-glow) !important;
}
.compute-btn:hover {
  transform: translateY(-2px) scale(1.01) !important;
  box-shadow: 0 6px 30px var(--accent-glow) !important;
}
.compute-btn.loading { background: linear-gradient(135deg, var(--teal), #0d9488) !important; }

.result-panel { border-radius: var(--radius-lg) !important; backdrop-filter: blur(10px); }
.result-score { font-family: var(--sans) !important; font-weight: 900 !important; }
.result-score.low { text-shadow: 0 0 30px rgba(16,185,129,0.3); }
.result-score.moderate { text-shadow: 0 0 30px rgba(245,158,11,0.3); }
.result-score.high { text-shadow: 0 0 30px rgba(239,68,68,0.3); }
.result-fhe-seal { border-radius: 20px !important; }
.interpretation-badge { border-radius: 20px !important; }
.send-doctor-btn {
  background: linear-gradient(135deg, var(--accent), #6d28d9) !important;
  border-radius: 8px !important;
}

/* Search */
.search-input {
  border-radius: var(--radius) !important; padding: 14px 16px 14px 42px !important;
  backdrop-filter: blur(10px);
}
.search-input:focus {
  box-shadow: 0 0 0 3px var(--accent-soft), 0 0 20px var(--accent-glow) !important;
}
.search-results { border-radius: var(--radius) !important; backdrop-filter: blur(20px) !important; }
.search-result-item .sr-badge { border-radius: 20px !important; padding: 2px 8px !important; }

/* Binary items */
.binary-item { border-radius: 10px !important; }
.binary-item .toggle { border-radius: 6px !important; }

/* ── About ── */
.about {
  border-radius: var(--radius-lg) !important; backdrop-filter: blur(10px);
}
.about h3 { font-family: var(--sans) !important; font-weight: 700 !important; }
.about-links a { border-radius: 8px !important; padding: 8px 16px !important; }

/* Tweet */
.tweet-section .section-title {
  font-family: var(--sans) !important; font-weight: 700 !important;
  text-transform: uppercase !important; letter-spacing: 1px !important;
}
.tweet-card { border-radius: var(--radius) !important; backdrop-filter: blur(10px); }
.tweet-avatar {
  background: linear-gradient(135deg, var(--accent), var(--teal)) !important;
}

/* Credentials */
.credentials-card {
  border-radius: var(--radius-lg) !important; backdrop-filter: blur(10px);
  position: relative !important; overflow: hidden !important;
}
.credentials-card::before {
  content: '' !important; position: absolute !important;
  top: 0 !important; left: 0 !important; right: 0 !important; height: 1px !important;
  background: linear-gradient(90deg, transparent, var(--accent), var(--teal), transparent) !important;
}
.credentials-card .cred-name {
  font-family: var(--sans) !important; font-weight: 800 !important;
}
.credentials-card .cred-links a { transition: color 0.2s; }
.credentials-card .cred-links a:hover { color: var(--teal) !important; }

/* Disclaimer */
.disclaimer { border-radius: var(--radius) !important; }

/* ── Powered by DNAI Section ── */
.powered-section {
  margin: 40px 0; padding: 40px;
  border-radius: var(--radius-lg);
  background: var(--card); border: 1px solid var(--border);
  text-align: center; position: relative; overflow: hidden;
}
.powered-section::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(139,92,246,0.05), rgba(20,184,166,0.05));
}
.powered-section h3 {
  font-size: 1.4rem; font-weight: 800; margin-bottom: 12px;
  background: linear-gradient(135deg, var(--accent), var(--teal));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  position: relative;
}
.powered-section p {
  color: var(--text-secondary); font-size: 0.9rem; max-width: 500px;
  margin: 0 auto; line-height: 1.7; position: relative;
}
.powered-badges {
  display: flex; gap: 10px; justify-content: center; flex-wrap: wrap;
  margin-top: 20px; position: relative;
}
.powered-badge {
  padding: 8px 18px; border-radius: 20px; font-size: 0.75rem; font-weight: 600;
  border: 1px solid var(--border); background: var(--card);
  color: var(--text-secondary); display: flex; align-items: center; gap: 6px;
}
.powered-badge .badge-icon { width: 6px; height: 6px; border-radius: 50%; }
.powered-badge:nth-child(1) .badge-icon { background: var(--accent); box-shadow: 0 0 6px var(--accent); }
.powered-badge:nth-child(2) .badge-icon { background: var(--green); box-shadow: 0 0 6px var(--green); }
.powered-badge:nth-child(3) .badge-icon { background: var(--teal); box-shadow: 0 0 6px var(--teal); }
.powered-badge:nth-child(4) .badge-icon { background: #f97316; box-shadow: 0 0 6px #f97316; }

/* ── Footer upgrade ── */
.footer {
  padding: 48px 0 32px !important; margin-top: 40px !important;
  position: relative !important;
}
.footer::before {
  content: '' !important; position: absolute !important; top: -1px !important;
  left: 50% !important; transform: translateX(-50%) !important;
  width: 200px !important; height: 1px !important;
  background: linear-gradient(90deg, transparent, var(--accent), transparent) !important;
}
.footer-brand { margin-bottom: 20px; }
.footer-brand .footer-logo {
  font-size: 1.1rem; font-weight: 800; letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent), var(--teal));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 4px;
}
.footer-brand .footer-tagline { font-size: 0.75rem; color: var(--text-dim); }
.footer-social {
  display: flex; justify-content: center; gap: 12px; margin-bottom: 20px;
}
.footer-social a {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--border); display: flex; align-items: center; justify-content: center;
  color: var(--text-dim); text-decoration: none; font-size: 0.85rem;
  transition: all var(--transition);
}
.footer-social a:hover {
  border-color: var(--accent); color: var(--accent); background: var(--accent-soft);
}
.footer-badges {
  display: flex; justify-content: center; gap: 8px; margin-bottom: 16px; flex-wrap: wrap;
}
.footer-badge {
  font-size: 0.6rem; font-weight: 600; padding: 4px 12px; border-radius: 20px;
  background: var(--card); border: 1px solid var(--border); color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.5px;
}

/* ── Joint panel ── */
.joint-panel-title { font-family: var(--sans) !important; font-weight: 700 !important; }
.joint-toggle { border-radius: 6px !important; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.5rem !important; letter-spacing: -1.5px !important; }
  .hero { padding: 60px 0 32px !important; }
  .powered-section { padding: 28px 20px !important; }
}
@media (max-width: 380px) {
  .hero h1 { font-size: 2rem !important; }
}