/* =========================================================
   DESDE EL PRIMER LATIDO — Shared Stylesheet v2
   Universidad Pablo Guardado Chávez · QFB · 2026
   UI/UX: Motion-Driven + Aurora UI · Figtree + Inter
   ========================================================= */

/* ── Google Fonts ────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Figtree:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,400&family=Inter:wght@300;400;500;600;700&display=swap');

/* ── CSS Custom Properties ───────────────────────────────── */
:root {
  /* Brand palette */
  --clr-primary:       #A31545;
  --clr-primary-dk:    #7B0E33;
  --clr-primary-lt:    #F4AEBE;
  --clr-secondary:     #6B3FA0;
  --clr-secondary-lt:  #C9A8E8;
  --clr-accent:        #F06292;
  --clr-accent-lt:     #FCE4EC;

  /* Aurora / Futuristic palette */
  --clr-aurora-1:      #A31545;
  --clr-aurora-2:      #6B3FA0;
  --clr-aurora-3:      #C2185B;
  --clr-aurora-4:      #4A148C;
  --clr-aurora-5:      #F06292;
  --clr-glow-rose:     rgba(163, 21, 69, 0.35);
  --clr-glow-violet:   rgba(107, 63, 160, 0.3);
  --clr-glow-pink:     rgba(240, 98, 146, 0.25);

  /* Glass effects */
  --glass-bg:          rgba(255, 255, 255, 0.72);
  --glass-bg-dark:     rgba(20, 10, 30, 0.55);
  --glass-border:      rgba(255, 255, 255, 0.45);
  --glass-border-dark: rgba(255, 255, 255, 0.12);
  --glass-blur:        blur(20px);
  --glass-blur-sm:     blur(10px);

  /* Semantic colours */
  --clr-safe:          #16A34A;
  --clr-safe-bg:       #DCFCE7;
  --clr-caution:       #D97706;
  --clr-caution-bg:    #FEF3C7;
  --clr-danger:        #DC2626;
  --clr-danger-bg:     #FEE2E2;

  /* Neutrals */
  --clr-bg:            #FFF8FB;
  --clr-surface:       #FFFFFF;
  --clr-text:          #1C1B29;
  --clr-text-muted:    #6B7280;
  --clr-border:        #F0D9E3;
  --clr-overlay:       rgba(163, 21, 69, 0.05);

  /* Typography */
  --font-head:   'Figtree', system-ui, sans-serif;
  --font-body:   'Inter', system-ui, sans-serif;
  --font-quote:  'Figtree', system-ui, sans-serif;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   2rem;
  --space-lg:   4rem;
  --space-xl:   6rem;

  /* Radius */
  --r-sm:  0.5rem;
  --r-md:  1rem;
  --r-lg:  1.5rem;
  --r-xl:  2.5rem;

  /* Shadows */
  --shadow-sm:   0 2px 12px rgba(163, 21, 69, 0.08);
  --shadow-md:   0 8px 32px rgba(163, 21, 69, 0.14);
  --shadow-lg:   0 24px 64px rgba(163, 21, 69, 0.20);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.07);
  --shadow-glow: 0 0 40px rgba(163, 21, 69, 0.3);
  --shadow-violet-glow: 0 0 40px rgba(107, 63, 160, 0.3);

  /* Transitions */
  --t-fast:  0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --t-med:   0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --t-slow:  0.7s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --max-w:  1200px;
  --nav-h:  70px;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: inherit; text-decoration: none; cursor: pointer; }
ul { list-style: none; }
button { cursor: pointer; }

/* ── Utility ─────────────────────────────────────────────── */
.container   { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--space-md); }
.section     { padding: var(--space-lg) 0; }
.section-alt { background: var(--clr-overlay); }
.text-center { text-align: center; }
.text-muted  { color: var(--clr-text-muted); }
.sr-only     { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ── Lucide Icons ────────────────────────────────────────── */
.lucide-icon {
  display: inline-block;
  width: 1.15em;
  height: 1.15em;
  vertical-align: -0.2em;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  flex-shrink: 0;
}
.qa-icon .lucide-icon,
.card-icon .lucide-icon { width: 2rem; height: 2rem; vertical-align: middle; }
.info-box-icon { display: inline-flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; flex-shrink: 0; }
.info-box-icon .lucide-icon { width: 1.4rem; height: 1.4rem; }

/* ── GSAP / ScrollTrigger animation targets ─────────────── */
/* JS adds .gsap-ready to body once GSAP loads;
   without it, items stay visible (no-JS fallback) */
.gsap-fade-up   { opacity: 1; }
.gsap-fade-in   { opacity: 1; }
.gsap-scale-in  { opacity: 1; }
.gsap-slide-left  { opacity: 1; }
.gsap-slide-right { opacity: 1; }

body.gsap-ready .gsap-fade-up,
body.gsap-ready .gsap-fade-in,
body.gsap-ready .gsap-scale-in,
body.gsap-ready .gsap-slide-left,
body.gsap-ready .gsap-slide-right { opacity: 0; }

/* ── Reveal animations ───────────────────────────────────────
   Default: visible (no-JS fallback works out of the box).
   JS adds .pre-reveal to hide elements before animating them in.
   .visible / .animated mark the final visible state.
──────────────────────────────────────────────────────────── */
.reveal,
.stagger-child                          { transition: opacity var(--t-slow), transform var(--t-slow); }

.pre-reveal                             { opacity: 0 !important; transform: translateY(30px) !important; }

.reveal.visible,
.reveal.animated,
.stagger-child.visible,
.stagger-child.animated                 { opacity: 1 !important; transform: none !important; }

/* Escalonado para las cards de medicamentos */
.med-card.reveal:nth-child(1) { transition-delay: 0.1s; }
.med-card.reveal:nth-child(2) { transition-delay: 0.2s; }
.med-card.reveal:nth-child(3) { transition-delay: 0.3s; }
.med-card.reveal:nth-child(4) { transition-delay: 0.4s; }
.med-card.reveal:nth-child(5) { transition-delay: 0.5s; }
.med-card.reveal:nth-child(6) { transition-delay: 0.6s; }
.med-card.reveal:nth-child(7) { transition-delay: 0.7s; }
.med-card.reveal:nth-child(8) { transition-delay: 0.8s; }
.med-card.reveal:nth-child(9) { transition-delay: 0.9s; }
.med-card.reveal:nth-child(10) { transition-delay: 1.0s; }

/* ── Typography ──────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-head);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.2rem, 5.5vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 4vw, 2.6rem);   font-weight: 700; }
h3 { font-size: clamp(1.2rem, 3vw, 1.8rem);   font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; }
p  { font-size: 1rem; margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

.section-title    { color: var(--clr-primary); margin-bottom: var(--space-xs); }
.section-subtitle { font-size: 1.1rem; color: var(--clr-text-muted); margin-bottom: var(--space-md); max-width: 700px; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-primary);
  background: linear-gradient(135deg, var(--clr-accent-lt), #EDE9FE);
  padding: 0.35rem 1rem;
  border-radius: 100px;
  margin-bottom: 0.8rem;
  border: 1px solid rgba(163, 21, 69, 0.12);
  position: relative;
  overflow: hidden;
}
.section-tag::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
  transform: translateX(-100%);
  animation: shimmer-tag 3s ease infinite;
}
@keyframes shimmer-tag {
  0%   { transform: translateX(-100%); }
  60%  { transform: translateX(100%); }
  100% { transform: translateX(100%); }
}

/* ── Glassmorphism utility ───────────────────────────────── */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}
.glass-dark {
  background: var(--glass-bg-dark);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-dark);
}

/* ── Aurora animated background ─────────────────────────── */
.aurora-bg {
  position: relative;
  overflow: hidden;
}
.aurora-bg::before,
.aurora-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  animation: aurora-drift 12s ease-in-out infinite alternate;
}
.aurora-bg::before {
  width: 55%;
  height: 70%;
  top: -20%;
  left: -10%;
  background: radial-gradient(ellipse, rgba(163, 21, 69, 0.22) 0%, transparent 70%);
}
.aurora-bg::after {
  width: 50%;
  height: 65%;
  bottom: -20%;
  right: -10%;
  background: radial-gradient(ellipse, rgba(107, 63, 160, 0.2) 0%, transparent 70%);
  animation-delay: -6s;
}
@keyframes aurora-drift {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(5%, 8%) scale(1.08); }
  100% { transform: translate(-5%, -5%) scale(0.96); }
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: 100px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--t-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transform: translateX(-100%);
  transition: transform 0.4s ease;
}
.btn:hover::after { transform: translateX(100%); }

.btn-primary {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(163, 21, 69, 0.35);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(163, 21, 69, 0.45);
}
.btn-outline {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.btn-outline:hover {
  background: var(--clr-primary);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: white;
  border-color: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.5);
}

/* ── Heartbeat divider ───────────────────────────────────── */
.heartbeat-divider { width: 100%; height: 40px; margin: 2rem 0; overflow: hidden; }
.heartbeat-divider svg { width: 100%; height: 100%; }

/* ── Site Header bar ─────────────────────────────────────── */
.site-header {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0.45rem 1rem;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.7rem;
  font-family: var(--font-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--clr-primary-dk), var(--clr-secondary), var(--clr-primary-dk));
  background-size: 200% 100%;
  animation: gradient-slide 8s linear infinite;
}
@keyframes gradient-slide {
  0%   { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}
@media (max-width: 1100px) {
  .site-header {
    flex-direction: column;
    text-align: center;
    gap: 0.35rem;
    padding: 0.65rem var(--space-md);
  }
  .site-header-copy {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
  }
  .site-header-divider {
    display: none !important;
  }
}

/* ── Navigation ──────────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(255, 248, 251, 0.90);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(163, 21, 69, 0.1);
  box-shadow: 0 4px 24px rgba(163, 21, 69, 0.06);
  transition: box-shadow var(--t-fast), background var(--t-fast);
}
.site-nav.scrolled {
  background: rgba(255, 248, 251, 0.97);
  box-shadow: 0 8px 40px rgba(163, 21, 69, 0.12);
}
/* Smart hide/show on scroll */
.site-nav {
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1), box-shadow var(--t-fast), background var(--t-fast);
}
.site-nav.hide { transform: translateY(-100%); }
.site-nav.show { transform: translateY(0); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
  gap: 1rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.nav-logo-placeholder {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-family: var(--font-head);
  font-weight: 800; font-size: 0.95rem;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  box-shadow: 0 4px 16px rgba(163, 21, 69, 0.3);
  flex-shrink: 0;
}
.nav-brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.nav-brand-name {
  font-family: var(--font-head);
  font-size: 0.82rem; font-weight: 800;
  color: var(--clr-primary-dk);
}
.nav-brand-sub { font-size: 0.65rem; color: var(--clr-text-muted); }

.nav-links { display: flex; align-items: center; gap: 0.2rem; }
.nav-links a {
  padding: 0.5rem 0.8rem;
  border-radius: 100px;
  font-size: 0.82rem; font-weight: 500;
  color: var(--clr-text-muted);
  transition: all var(--t-fast);
  position: relative;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--clr-primary);
  background: rgba(163, 21, 69, 0.08);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 3px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--clr-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column; gap: 5px;
  cursor: pointer; padding: 8px;
  border: none; background: none;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--clr-text);
  border-radius: 99px;
  transition: all var(--t-fast);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav-mobile {
  display: none;
  background: rgba(255, 248, 251, 0.97);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--clr-border);
  padding: 1rem var(--space-md) 1.5rem;
}
.nav-mobile.open { display: block; }
.nav-mobile a {
  display: block; padding: 0.75rem 1rem;
  font-size: 0.95rem; font-weight: 500;
  color: var(--clr-text);
  border-radius: var(--r-sm);
  transition: all var(--t-fast);
}
.nav-mobile a:hover,
.nav-mobile a.active {
  background: var(--clr-overlay);
  color: var(--clr-primary);
}

/* ── Page hero (inner pages) ─────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--clr-primary-dk) 0%, var(--clr-primary) 50%, var(--clr-secondary) 100%);
  color: white;
  padding: calc(var(--space-lg) * 0.85) var(--space-md);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before,
.page-hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}
.page-hero::before {
  width: 400px; height: 400px;
  top: -150px; left: -100px;
  background: radial-gradient(ellipse, rgba(240,98,146,0.3), transparent);
}
.page-hero::after {
  width: 300px; height: 300px;
  bottom: -100px; right: -50px;
  background: radial-gradient(ellipse, rgba(107,63,160,0.35), transparent);
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 0.75rem; }
.page-hero p  { font-size: 1.1rem; opacity: 0.88; max-width: 600px; margin: 0 auto; }

/* ── Cards — Glassmorphism + depth ───────────────────────── */
.card {
  background: var(--clr-surface);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--t-med), box-shadow var(--t-med);
  border: 1px solid var(--clr-border);
  position: relative;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, transparent 60%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-fast);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card:hover::before { opacity: 1; }

.card-body { padding: 1.75rem; }
.card-icon {
  width: 56px; height: 56px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
  position: relative;
  overflow: hidden;
}
.card-icon::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.3), transparent);
  border-radius: inherit;
}
.card-icon.rose   { background: linear-gradient(135deg, #FFD6E7, #FCE4EC); }
.card-icon.purple { background: linear-gradient(135deg, #E9D5FF, #EDE9FE); }
.card-icon.green  { background: linear-gradient(135deg, #BBF7D0, #DCFCE7); }
.card-icon.amber  { background: linear-gradient(135deg, #FDE68A, #FEF3C7); }
.card-icon.red    { background: linear-gradient(135deg, #FECACA, #FEE2E2); }

/* Quick-access cards */
.qa-card {
  border-radius: var(--r-lg);
  padding: 1.75rem;
  display: flex; flex-direction: column; gap: 0.75rem;
  text-decoration: none;
  color: var(--clr-text);
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  transition: all var(--t-med);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}
.qa-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--clr-accent-lt), #EDE9FE);
  opacity: 0;
  transition: opacity var(--t-med);
}
.qa-card > * { position: relative; z-index: 1; }
.qa-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--clr-primary-lt);
}
.qa-card:hover::before { opacity: 0.5; }
.qa-icon { font-size: 2rem; }
.qa-title { font-family: var(--font-head); font-weight: 700; font-size: 1.05rem; color: var(--clr-primary); }
.qa-desc  { font-size: .875rem; color: var(--clr-text-muted); }
.qa-arrow {
  margin-top: auto;
  font-size: .85rem; font-weight: 600;
  color: var(--clr-primary);
  display: flex; align-items: center; gap: .3rem;
  transition: gap var(--t-fast);
}
.qa-card:hover .qa-arrow { gap: 0.6rem; }

/* Flip card */
.flip-card { perspective: 1000px; height: 280px; }
.flip-card-inner {
  position: relative; width: 100%; height: 100%;
  transition: transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}
.flip-card:hover .flip-card-inner,
.flip-card.flipped .flip-card-inner { transform: rotateY(180deg); }
.flip-front, .flip-back {
  position: absolute; inset: 0;
  border-radius: var(--r-lg);
  backface-visibility: hidden;
  padding: 1.5rem;
  display: flex; flex-direction: column; justify-content: center;
  border: 1px solid var(--clr-border);
}
.flip-front { background: var(--clr-surface); box-shadow: var(--shadow-card); text-align: center; }
.flip-back  { transform: rotateY(180deg); font-size: 0.875rem; }
.flip-back.risk-safe    { background: var(--clr-safe-bg);    border-color: var(--clr-safe); }
.flip-back.risk-caution { background: var(--clr-caution-bg); border-color: var(--clr-caution); }
.flip-back.risk-danger  { background: var(--clr-danger-bg);  border-color: var(--clr-danger); }

/* Risk badge */
.risk-badge {
  display: inline-flex; align-items: center; gap: 0.3rem;
  padding: 0.25rem 0.75rem; border-radius: 100px;
  font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.05em; text-transform: uppercase;
}
.risk-badge.safe    { background: var(--clr-safe-bg);    color: var(--clr-safe); }
.risk-badge.caution { background: var(--clr-caution-bg); color: var(--clr-caution); }
.risk-badge.danger  { background: var(--clr-danger-bg);  color: var(--clr-danger); }

/* ── Stats Counter ───────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin: var(--space-md) 0;
}
.stat-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--r-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  transition: transform var(--t-med), box-shadow var(--t-med);
}
.stat-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-aurora-1), var(--clr-aurora-2), var(--clr-aurora-5));
}
.stat-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(255,255,255,0.1); }
.stat-number {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #FFFFFF, #F4AEBE);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.85rem; font-weight: 500; opacity: 0.75; }

/* Light background override for stat cards (References page) */
section:not(.impact-section) .stat-card {
  background: #FFFFFF;
  border: 1px solid var(--clr-border);
  box-shadow: 0 10px 30px rgba(163, 21, 69, 0.05);
  border-radius: var(--r-lg);
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med);
}
section:not(.impact-section) .stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 40px rgba(163, 21, 69, 0.12);
  border-color: var(--clr-primary);
}
section:not(.impact-section) .stat-number,
section:not(.impact-section) .stat-number span {
  color: var(--clr-primary);
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  display: inline-block;
  opacity: 1 !important;
  text-shadow: 0 2px 12px rgba(163, 21, 69, 0.08);
}

/* Disable hover elevation/transform/shine on the references card list */
.ref-list.card {
  transition: box-shadow var(--t-med) !important;
}
.ref-list.card:hover {
  transform: none !important;
  box-shadow: var(--shadow-card) !important;
}
.ref-list.card:hover::before {
  opacity: 0 !important;
}

/* ── Accordion ───────────────────────────────────────────── */
.accordion { border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--clr-border); }
.accordion-item { border-bottom: 1px solid var(--clr-border); }
.accordion-item:last-child { border-bottom: none; }
.accordion-btn {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: var(--clr-surface);
  border: none;
  font-family: var(--font-body); font-size: 1rem; font-weight: 600;
  color: var(--clr-text); text-align: left;
  transition: background var(--t-fast), color var(--t-fast);
}
.accordion-btn:hover, .accordion-btn.open {
  background: linear-gradient(135deg, var(--clr-accent-lt), #EDE9FE);
  color: var(--clr-primary);
}
.accordion-icon {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--clr-border);
  display: flex; align-items: center; justify-content: center;
  transition: transform var(--t-fast), background var(--t-fast);
  flex-shrink: 0; font-size: 1.1rem; font-weight: 700;
}
.accordion-btn.open .accordion-icon {
  transform: rotate(45deg);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  color: white;
}
.accordion-content { display: none; padding: 0 1.5rem 1.25rem; background: var(--clr-surface); font-size: 0.95rem; }
.accordion-content.open { display: block; }

/* ── Timeline ────────────────────────────────────────────── */
.timeline { position: relative; padding-left: 2.5rem; }
.timeline::before {
  content: ''; position: absolute;
  left: 0.65rem; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--clr-primary-lt), var(--clr-secondary-lt));
}
.timeline-item { position: relative; margin-bottom: 2rem; }
.timeline-dot {
  position: absolute; left: -2.15rem; top: 0.25rem;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--clr-primary);
  border: 3px solid var(--clr-bg);
  box-shadow: 0 0 0 2px var(--clr-primary-lt), 0 0 12px var(--clr-glow-rose);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.timeline-item:hover .timeline-dot { transform: scale(1.5); box-shadow: 0 0 0 2px var(--clr-primary-lt), 0 0 20px var(--clr-glow-rose); }
.timeline-date { font-size: 0.75rem; font-weight: 700; color: var(--clr-primary); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.25rem; }
.timeline-title { font-size: 1rem; font-weight: 700; margin-bottom: 0.4rem; }
.timeline-text  { font-size: 0.9rem; color: var(--clr-text-muted); }

/* ── Trimester tabs ──────────────────────────────────────── */
.trimester-tabs { display: flex; gap: 0.5rem; margin-bottom: 2rem; flex-wrap: wrap; }
.trim-tab {
  padding: 0.6rem 1.5rem; border-radius: 100px;
  border: 2px solid var(--clr-border);
  background: var(--clr-surface);
  font-family: var(--font-body); font-weight: 600; font-size: 0.9rem;
  color: var(--clr-text-muted);
  transition: all var(--t-fast);
}
.trim-tab:hover, .trim-tab.active {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  border-color: transparent; color: white;
  box-shadow: 0 4px 16px rgba(163, 21, 69, 0.3);
}
.trim-panel { display: none; }
.trim-panel.active { display: block; }

/* ── Info box ────────────────────────────────────────────── */
.info-box {
  border-radius: var(--r-md); padding: 1.25rem 1.5rem;
  display: flex; gap: 1rem; margin: 1.5rem 0;
}
.info-box.tip     { background: #EFF6FF; border-left: 4px solid #3B82F6; }
.info-box.warning { background: var(--clr-caution-bg); border-left: 4px solid var(--clr-caution); }
.info-box.danger  { background: var(--clr-danger-bg);  border-left: 4px solid var(--clr-danger); }
.info-box.success { background: var(--clr-safe-bg);    border-left: 4px solid var(--clr-safe); }
.info-box-text h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.3rem; }
.info-box-text p  { font-size: 0.875rem; margin: 0; }

/* ── Grid layouts ────────────────────────────────────────── */
.grid-2    { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); align-items: start; }
.grid-3    { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); }
.grid-4    { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-sm); }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-sm); }

/* ── Table styles ────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.data-table th {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  color: white; padding: 0.9rem 1rem;
  text-align: left; font-weight: 600; font-size: 0.85rem;
}
.data-table td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--clr-border); }
.data-table tr:nth-child(even) td { background: var(--clr-overlay); }
.data-table tr:hover td { background: var(--clr-accent-lt); }
.data-table th:first-child { border-radius: var(--r-sm) 0 0 0; }
.data-table th:last-child  { border-radius: 0 var(--r-sm) 0 0; }

/* ── Quote block ─────────────────────────────────────────── */
.quote-block {
  background: linear-gradient(135deg, var(--clr-accent-lt), #EDE9FE);
  border-radius: var(--r-lg); padding: 2rem;
  position: relative; margin: 2rem 0;
  border: 1px solid rgba(163, 21, 69, 0.12);
}
.quote-block::before {
  content: '"';
  position: absolute; top: -1rem; left: 1.5rem;
  font-family: var(--font-head); font-size: 5rem;
  color: var(--clr-primary); opacity: 0.15; line-height: 1;
}
.quote-text   { font-family: var(--font-quote); font-size: 1.3rem; font-weight: 600; color: var(--clr-text); margin-bottom: 0.75rem; }
.quote-source { font-size: 0.8rem; color: var(--clr-text-muted); font-weight: 600; }

/* ── Team card ───────────────────────────────────────────── */
.team-card {
  background: var(--clr-surface);
  border-radius: var(--r-lg);
  padding: 2rem 1.5rem; text-align: center;
  border: 1px solid var(--clr-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--t-med);
  position: relative; overflow: hidden;
}
.team-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary), var(--clr-accent));
}
.team-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.team-avatar {
  width: 84px; height: 84px; border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-primary-lt), var(--clr-secondary-lt));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-size: 1.5rem; font-weight: 700;
  color: var(--clr-primary); margin: 0 auto 1rem;
  border: 3px solid white;
  box-shadow: var(--shadow-sm), 0 0 0 4px rgba(163, 21, 69, 0.08);
  transition: box-shadow var(--t-fast);
}
.team-card:hover .team-avatar { box-shadow: var(--shadow-md), 0 0 0 4px rgba(163, 21, 69, 0.15); }
.team-name { font-family: var(--font-head); font-weight: 700; margin-bottom: 0.25rem; }
.team-role { font-size: 0.85rem; color: var(--clr-text-muted); }
.team-card.advisor .team-avatar { background: linear-gradient(135deg, #1E3A5F, #2B5797); color: white; }
.team-card.advisor .team-name { color: var(--clr-secondary); }

/* ── Back-to-top ─────────────────────────────────────────── */
.back-top,
#back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  color: white; border: none;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(163, 21, 69, 0.4);
  opacity: 0; transform: translateY(20px);
  transition: all var(--t-fast); z-index: 999;
}
.back-top.visible,
#back-to-top.visible { opacity: 1; transform: none; }
.back-top:hover,
#back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(163, 21, 69, 0.5);
}

/* ── References ──────────────────────────────────────────── */
.ref-list { counter-reset: refs; }
.ref-item {
  display: flex; gap: 1rem; padding: 1rem;
  border-radius: var(--r-sm);
  transition: background var(--t-fast);
  border-bottom: 1px solid var(--clr-border);
}
.ref-item:last-child { border-bottom: none; }
.ref-item:hover { background: var(--clr-overlay); }
.ref-num { font-weight: 800; color: var(--clr-primary); font-size: 0.85rem; min-width: 32px; padding-top: 2px; }
.ref-text { font-size: 0.875rem; line-height: 1.6; }
.ref-text a { color: var(--clr-secondary); text-decoration: underline; font-size: 0.8rem; }

/* ── Hero section — Aurora Mesh ──────────────────────────── */
.hero {
  min-height: auto;
  padding-bottom: 4rem; /* space for scroll indicator */
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  overflow: hidden;
  color: white;
  background: 
    url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='50' cy='50' r='1' fill='rgba(255,255,255,0.06)'/%3E%3C/svg%3E"),
    radial-gradient(ellipse 80% 60% at 20% 50%, rgba(163, 21, 69, 0.55) 0%, transparent 55%),
    radial-gradient(ellipse 60% 70% at 80% 30%, rgba(107, 63, 160, 0.5) 0%, transparent 55%),
    radial-gradient(ellipse 50% 80% at 60% 80%, rgba(194, 24, 91, 0.35) 0%, transparent 50%),
    radial-gradient(ellipse 40% 50% at 10% 20%, rgba(74, 20, 140, 0.4) 0%, transparent 50%),
    linear-gradient(to bottom, rgba(0,0,0,0) 60%, rgba(17, 6, 23, 0.6) 100%),
    #110617;
}

.hero-content {
  padding: var(--space-xl) var(--space-md) var(--space-xl) calc(50vw - var(--max-w)/2 + var(--space-md));
  position: relative; z-index: 2;
}
@media (max-width: 1200px) { .hero-content { padding-left: var(--space-md); } }

.hero-tag {
  display: inline-flex; align-items: center; gap: 0.6rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 100px;
  padding: 0.45rem 1.1rem;
  font-family: var(--font-body);
  font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
}
.hero-tag::before {
  content: '♥';
  animation: heartbeat 1.2s ease infinite;
  display: inline-block;
  color: var(--clr-accent);
}
@keyframes heartbeat {
  0%,100% { transform: scale(1); }
  14%     { transform: scale(1.35); }
  28%     { transform: scale(1); }
  42%     { transform: scale(1.35); }
  70%     { transform: scale(1); }
}

.hero h1 { color: white; margin-bottom: 1rem; }
.hero h1 span { color: var(--clr-accent); }
.hero-desc { font-size: 1.05rem; opacity: 0.82; max-width: 480px; margin-bottom: 2rem; line-height: 1.75; }

.hero-authors {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--r-md); padding: 1rem 1.25rem; margin-bottom: 2rem;
  backdrop-filter: blur(10px); font-size: 0.8rem;
}
.hero-authors-title { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; opacity: 0.55; margin-bottom: 0.5rem; font-weight: 600; }
.hero-authors-names { opacity: 0.88; line-height: 1.85; }

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-visual {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: center;
  height: 100%; min-height: 550px;
}
#fetus-canvas { position: relative; z-index: 1; }

/* ── Ultrasound Sac & GIF Container ───────────────────────── */
.gif-container {
  position: relative;
  width: 340px;
  height: 440px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  z-index: 5;
}

/* Pulsing aura glow rings behind the sac */
.gif-pulse-ring {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(163, 21, 69, 0.15), transparent 70%);
  filter: blur(12px);
  pointer-events: none;
  z-index: 0;
}
.ring-1 { width: 440px; height: 540px; animation: aura-pulse 3s infinite ease-in-out; }
.ring-2 { width: 380px; height: 480px; animation: aura-pulse 4.5s infinite ease-in-out 1s; }
.ring-3 { width: 320px; height: 400px; animation: aura-pulse 6s infinite ease-in-out 2s; }

@keyframes aura-pulse {
  0%, 100% { transform: scale(0.95); opacity: 0.4; }
  50%       { transform: scale(1.05); opacity: 0.8; }
}

/* Designed ultrasound framing */
.ultrasound-frame {
  position: relative;
  width: 300px;
  height: 400px;
  border-radius: 50% / 40%; /* amniotic sac vertical oval */
  overflow: hidden;
  background: #0b0206;
  border: 3px solid rgba(244, 174, 190, 0.35);
  box-shadow: 
    0 0 35px rgba(163, 21, 69, 0.5),
    inset 0 0 30px rgba(244, 174, 190, 0.15);
  transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  z-index: 2;
}

.gif-container:hover .ultrasound-frame {
  transform: scale(1.025);
  border-color: rgba(244, 174, 190, 0.7);
  box-shadow: 
    0 0 45px rgba(163, 21, 69, 0.75),
    inset 0 0 40px rgba(244, 174, 190, 0.3);
}

.baby-gif-element {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
  filter: contrast(1.1) brightness(0.9) grayscale(20%);
  transition: all 0.3s ease;
}

.gif-container:hover .baby-gif-element {
  opacity: 1.0;
  filter: contrast(1.15) brightness(0.95) grayscale(0%);
}

/* Medical HUD simulation overlay */
.medical-hud-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  font-family: var(--font-head);
  font-size: 0.65rem;
  font-weight: 700;
  color: rgba(244, 174, 190, 0.8);
  padding: 1.5rem;
  letter-spacing: 0.08em;
}

.hud-item {
  position: absolute;
  text-shadow: 0 0 4px rgba(0, 0, 0, 0.9);
}
.hud-top-left { top: 1.5rem; left: 1.5rem; }
.hud-top-right {
  top: 1.5rem;
  right: 1.5rem;
  color: #4ADE80;
  display: flex;
  align-items: center;
  gap: 4px;
}
.hud-pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4ADE80;
  box-shadow: 0 0 6px #4ADE80;
  animation: heartbeat 1.2s infinite ease-in-out;
}
.hud-bottom-left { bottom: 1.5rem; left: 1.5rem; }
.hud-bottom-right { bottom: 1.5rem; right: 1.5rem; }

/* Neon Scanning Line */
.scan-line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(244, 174, 190, 0.8), transparent);
  box-shadow: 0 0 10px rgba(244, 174, 190, 0.8);
  animation: scanning 4.5s linear infinite;
  z-index: 4;
}

@keyframes scanning {
  0% { top: 5%; }
  50% { top: 95%; }
  100% { top: 5%; }
}

/* ── Redesigned Fetus Info Overlay Card ──────────────────── */
#fetus-info-overlay {
  display: none;
  position: absolute;
  width: 350px;
  min-height: 480px;
  height: auto;
  background: rgba(23, 5, 14, 0.98);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: 28px;
  border: 1.5px solid rgba(244, 174, 190, 0.25);
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 2.25rem 1.5rem 1.5rem;
  z-index: 10;
  pointer-events: all;
  box-shadow: 
    0 20px 50px rgba(0, 0, 0, 0.8),
    0 0 30px rgba(163, 21, 69, 0.35);
  animation: overlayAppear 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  gap: 0.85rem;
}

@keyframes overlayAppear {
  from { opacity: 0; transform: translate(-50%, -45%) scale(0.92); }
  to   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

#fetus-info-overlay.active {
  display: flex;
}

.overlay-header {
  width: 100%;
}
.overlay-heartrate-hud {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.35rem 0.75rem;
  background: rgba(244, 174, 190, 0.1);
  border-radius: 100px;
  border: 1px solid rgba(244, 174, 190, 0.2);
}
.overlay-heartrate-hud .pulse-icon {
  font-size: 0.7rem;
  animation: heartbeat 1s infinite ease-in-out;
}
.overlay-heartrate-hud .pulse-text {
  font-family: var(--font-head);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--clr-accent);
  letter-spacing: 0.05em;
}

/* Improved text and container limits with NO empty spaces */
.overlay-content {
  font-size: 0.88rem !important;
  line-height: 1.65 !important;
  color: rgba(255, 255, 255, 0.9);
  max-width: 100% !important;
  margin: 1rem 0 !important;
  min-height: 110px !important;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 0.5rem;
}
.overlay-content strong {
  color: var(--clr-accent);
  font-size: 1.05rem;
  display: block;
  margin-bottom: 0.4rem;
}

.overlay-footer {
  width: 100%;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 0.75rem;
}

/* Floating particles */
.particle {
  position: absolute; border-radius: 50%;
  animation: float-up 4s ease-in-out infinite;
  opacity: 0.3; pointer-events: none;
  z-index: 1;
}
@keyframes float-up {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.3; }
  50%       { transform: translateY(-22px) scale(1.1); opacity: 0.6; }
}

/* ── SVG animations ──────────────────────────────────────── */
.womb-pulse { animation: womb-pulse 2s ease-in-out infinite; }
@keyframes womb-pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.025); } }
.heartbeat-line { stroke-dasharray: 600; stroke-dashoffset: 600; animation: draw-line 2s ease forwards; }
@keyframes draw-line { to { stroke-dashoffset: 0; } }
.ecg-animate { stroke-dasharray: 200; stroke-dashoffset: 200; animation: ecg 1.8s linear infinite; }
@keyframes ecg { to { stroke-dashoffset: -200; } }

/* ── Trimester section ───────────────────────────────────── */
.trimester-card {
  background: var(--clr-surface); border-radius: var(--r-lg);
  overflow: hidden; border: 1px solid var(--clr-border);
  transition: all var(--t-med);
}
.trimester-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.trimester-card.active { border-color: var(--clr-primary); box-shadow: 0 0 0 3px rgba(163, 21, 69, 0.1); }
.trimester-head { padding: 1.25rem; display: flex; align-items: center; gap: 1rem; }
.trimester-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  color: white; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.1rem; flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(163, 21, 69, 0.3);
}
.trimester-weeks { font-size: 0.75rem; color: var(--clr-text-muted); margin-bottom: 0.15rem; }
.trimester-name  { font-weight: 700; font-size: 1rem; }
.trimester-body  { padding: 0 1.25rem 1.25rem; font-size: 0.875rem; color: var(--clr-text-muted); }

/* ── OMS Band ────────────────────────────────────────────── */
.oms-band {
  background: linear-gradient(135deg, var(--clr-accent-lt), #EDE9FE);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}
.oms-inner { display: flex; align-items: center; gap: var(--space-sm); flex-wrap: wrap; }
.oms-quote {
  font-family: var(--font-quote);
  font-size: 1.25rem; font-weight: 600;
  flex: 1; min-width: 260px;
  font-style: italic;
}
.oms-source { font-size: .8rem; font-weight: 700; color: var(--clr-text-muted); text-transform: uppercase; letter-spacing: .08em; }

/* ── Impact section ──────────────────────────────────────── */
.impact-section {
  background: linear-gradient(135deg, #110617 0%, #2D0B1F 40%, #1A0A2E 100%);
  position: relative; overflow: hidden; color: white;
}
.impact-section::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 80% 50%, rgba(107,63,160,0.3), transparent),
    radial-gradient(ellipse 50% 60% at 20% 50%, rgba(163,21,69,0.25), transparent);
  pointer-events: none;
}
.impact-section .container { position: relative; z-index: 1; }
.impact-section .section-tag { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.85); border-color: rgba(255,255,255,0.15); }
.impact-section .section-title { color: white; }
.impact-section .section-subtitle { color: rgba(255,255,255,0.65); }

/* ── QFB strip ───────────────────────────────────────────── */
.qfb-strip {
  background: linear-gradient(135deg, var(--clr-secondary), var(--clr-primary));
  color: white; text-align: center; padding: var(--space-lg) var(--space-md);
  position: relative; overflow: hidden;
}
.qfb-strip::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 70% at 50% 50%, rgba(255,255,255,0.06), transparent);
}
.qfb-strip .container { position: relative; z-index: 1; }
.qfb-strip h2 { color: white; margin-bottom: 1rem; }
.qfb-strip p  { max-width: 700px; margin: 0 auto 2rem; opacity: .88; }

/* ── Section divider ─────────────────────────────────────── */
.wavy-divider { overflow: hidden; line-height: 0; }
.wavy-divider svg { display: block; }

/* ── Scroll progress bar ─────────────────────────────────── */
.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary), var(--clr-accent));
  transform-origin: left;
  transform: scaleX(0);
  z-index: 9999;
  transition: transform 0.1s linear;
}

/* ── Stagger animations ──────────────────────────────────── */
.stagger-parent .stagger-child { opacity: 0; transform: translateY(24px); transition: opacity var(--t-slow), transform var(--t-slow); }
.stagger-parent .stagger-child.visible { opacity: 1; transform: none; }

/* ── Site Footer ─────────────────────────────────────────── */
.site-footer {
  background: linear-gradient(135deg, #0D0614, var(--clr-primary-dk), #1A0A2E);
  color: white; padding: var(--space-lg) 0 var(--space-md);
  position: relative; overflow: hidden;
}
.site-footer::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 50% at 80% 20%, rgba(107,63,160,0.2), transparent);
  pointer-events: none;
}
.site-footer .container { position: relative; z-index: 1; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1.5fr;
  gap: var(--space-md); margin-bottom: var(--space-md);
}
.footer-brand .logo-wrap { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; }
.footer-logo-ph {
  width: 50px; height: 50px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-weight: 800; font-size: 1.1rem;
  border: 2px solid rgba(255,255,255,0.2);
}
.footer-brand-name { font-family: var(--font-head); font-size: 1rem; font-weight: 700; line-height: 1.2; }
.footer-brand p { font-size: 0.875rem; opacity: 0.65; max-width: 320px; }
.footer-col h4 { font-size: 0.8rem; font-weight: 700; margin-bottom: 1rem; opacity: 0.75; text-transform: uppercase; letter-spacing: 0.1em; }
.footer-col ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col ul a { font-size: 0.875rem; opacity: 0.6; transition: opacity var(--t-fast), color var(--t-fast); }
.footer-col ul a:hover { opacity: 1; color: var(--clr-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-sm);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 0.5rem; font-size: 0.78rem; opacity: 0.45;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --space-lg: 3rem; --space-xl: 4rem; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-visual { display: none; }
  .hero-content { padding: var(--space-lg) var(--space-md); text-align: center; }
  .hero-desc, .hero-authors { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .data-table { font-size: 0.8rem; }
  .data-table th, .data-table td { padding: 0.6rem 0.75rem; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .trimester-tabs { gap: 0.25rem; }
  .trim-tab { padding: 0.5rem 1rem; font-size: 0.8rem; }
  .btn { padding: 0.75rem 1.5rem; font-size: 0.875rem; }
}

/* ── Reduced motion ──────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── Print ───────────────────────────────────────────────── */
/* ── Premium Futuristic Overlay Buttons & Controls ────────── */
.overlay-trim-btns {
  display: flex;
  gap: 0.45rem;
  margin: 0.5rem 0 0.75rem;
  justify-content: center;
  width: 100%;
}

.overlay-trim-btn {
  padding: 0.45rem 0.85rem;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(254, 219, 226, 0.25);
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
  letter-spacing: 0.02em;
}

.overlay-trim-btn:hover {
  background: rgba(244, 174, 190, 0.12);
  border-color: rgba(244, 174, 190, 0.45);
  color: white;
  box-shadow: 0 0 12px rgba(163, 21, 69, 0.25);
  transform: translateY(-1px);
}

.overlay-trim-btn.active {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  border-color: rgba(244, 174, 190, 0.6);
  color: white;
  box-shadow: 
    0 4px 15px rgba(163, 21, 69, 0.4),
    0 0 15px rgba(244, 174, 190, 0.2);
  transform: scale(1.03);
}

/* Glowing, circular modern close button */
#overlay-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(254, 219, 226, 0.25);
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  z-index: 12;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

#overlay-close-btn:hover {
  background: rgba(163, 21, 69, 0.9);
  border-color: rgba(244, 174, 190, 0.65);
  color: white;
  transform: rotate(90deg) scale(1.08);
  box-shadow: 
    0 0 15px rgba(163, 21, 69, 0.7),
    0 4px 12px rgba(0, 0, 0, 0.35);
}

@media print {
  .site-nav, #back-to-top, .back-top, .hero-visual, .scroll-progress { display: none; }
  body { color: black; background: white; }
}

.nav-logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  background: #ffffff;
  border-radius: 8px;
  padding: 2px;
  box-shadow: 0 4px 16px rgba(163, 21, 69, 0.25);
  flex-shrink: 0;
}

.footer-logo-img {
  width: 50px;
  height: 50px;
  object-fit: contain;
  background: #ffffff;
  border-radius: 50%;
  padding: 3px;
  border: 2px solid rgba(255,255,255,0.2);
  flex-shrink: 0;
}

/* ── Desktop Navigation Dropdown ─────────────────────────── */
.nav-dropdown {
  position: relative;
  display: inline-block;
}

.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: rgba(23, 5, 14, 0.98);
  border: 1px solid rgba(254, 219, 226, 0.2);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  padding: 0.6rem 0;
  min-width: 195px;
  z-index: 1000;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  animation: dropdownAppear 0.28s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

@keyframes dropdownAppear {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.nav-dropdown:hover .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-item {
  display: block;
  padding: 0.65rem 1.25rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8) !important;
  transition: all var(--t-fast);
  font-family: var(--font-head);
  letter-spacing: 0.02em;
}

.nav-dropdown-item:hover {
  background: rgba(163, 21, 69, 0.15);
  color: var(--clr-accent) !important;
  padding-left: 1.55rem;
}