/* ============================================
   NIM-ACh — Hero Section
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  background: var(--c-navy);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 64px;    /* nav height */
  padding-bottom: 116px; /* reserva espacio del ECG (96px) + 20px respiro */
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
  pointer-events: none;
}

/* ── Noise texture overlay ── */
.hero-noise {
  position: absolute;
  inset: 0;
  opacity: .03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: var(--z-above);
  padding: 0 64px;
  max-width: 800px;
}

/* ── Eyebrow ── */
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-blue-light);
  border: 0.5px solid rgba(127,179,232,.2);
  background: rgba(127,179,232,.07);
  padding: 6px 14px;
  border-radius: var(--r-full);
  margin-bottom: 24px;
}

/* ── Title ── */
.hero-title {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 500;
  color: var(--t-hero);
  line-height: 1.18;
  margin-bottom: 20px;
  overflow: hidden;
}

.hero-title-line {
  display: block;
  transform: translateY(48px);
  opacity: 0;
  animation: line-in .75s var(--ease-out) forwards;
}

.hero-title-line:nth-child(2) { animation-delay: .12s; }
.hero-title-line:nth-child(3) { animation-delay: .22s; }

.hero-title .accent {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Sub ── */
.hero-sub {
  font-size: 15px;
  color: var(--t-muted);
  line-height: 1.8;
  margin-bottom: 32px;
  opacity: 0;
  animation: fade-in .8s .36s forwards;
}

/* ── Buttons ── */
.hero-btns {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  opacity: 0;
  animation: fade-in .8s .46s forwards;
}

.btn-primary {
  font-size: 13px;
  font-weight: 500;
  padding: 12px 26px;
  background: linear-gradient(135deg, var(--c-coral), #c85020);
  color: #fff;
  border-radius: var(--r-md);
  border: none;
  transition: transform var(--dur-fast) var(--ease-spring),
              box-shadow var(--dur-fast);
  text-decoration: none;
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-coral);
}

.btn-secondary {
  font-size: 13px;
  font-weight: 500;
  padding: 12px 26px;
  background: var(--glass);
  color: var(--t-hero);
  border-radius: var(--r-md);
  border: 0.5px solid var(--glass-border);
  transition: background var(--dur-fast), transform var(--dur-fast) var(--ease-spring);
  text-decoration: none;
  display: inline-block;
}

.btn-secondary:hover {
  background: var(--glass-hover);
  transform: translateY(-2px);
}

/* ── 3D viewer trigger (texto sutil, no CTA primario) ── */
.btn-3d-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 400;
  color: var(--t-muted);
  background: none;
  border: none;
  padding: 0;
  margin-bottom: 32px;
  cursor: pointer;
  font-family: var(--font-sans);
  opacity: 0;
  animation: fade-in .8s .52s forwards;
  transition: color var(--dur-fast);
}

.btn-3d-link:hover {
  color: var(--c-teal);
}

.btn-3d-link:hover .btn-3d-link-arrow {
  transform: translateX(4px);
}

.btn-3d-link-icon {
  font-size: 13px;
  color: var(--c-teal);
  opacity: .7;
  animation: spin-slow 10s linear infinite;
}

.btn-3d-link-arrow {
  font-size: 12px;
  transition: transform var(--dur-fast) var(--ease-spring);
  color: var(--c-teal);
  opacity: .7;
}

/* ── Stats ── */
.hero-stats {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fade-in .8s .60s forwards;
  padding-top: 20px;
  border-top: 0.5px solid var(--glass-border);
}

.stat-ring-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.stat-ring-svg {
  width: 48px;
  height: 48px;
  transform: rotate(-90deg);
  flex-shrink: 0;
}

.stat-ring-track {
  fill: none;
  stroke: rgba(255,255,255,.07);
  stroke-width: 3;
}

.stat-ring-val {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 113;
  stroke-dashoffset: 113;
  transition: stroke-dashoffset 1.5s var(--ease-out);
}

.ring-blue   { stroke: var(--c-blue-light); }
.ring-coral  { stroke: var(--c-coral); }
.ring-teal   { stroke: var(--c-teal); }
.ring-purple { stroke: var(--c-purple); }

.stat-number {
  font-size: 22px;
  font-weight: 600;
  color: var(--t-hero);
  line-height: 1;
}

.stat-label {
  font-size: 10px;
  color: var(--t-muted);
  letter-spacing: .04em;
  margin-top: 3px;
}

/* ── ECG canvas ── */
/* ── ECG canvas ── */
.hero-ecg {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 96px;
  pointer-events: none;
  display: block;
  width: 100%;
  z-index: 1;                         /* debajo del hero-content (z-index: 10) */
  mask-image: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(0,0,0,0.4) 25%,
    rgba(0,0,0,1) 60%
  );
  -webkit-mask-image: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(0,0,0,0.4) 25%,
    rgba(0,0,0,1) 60%
  );
}

/* ── Scroll hint ── */
.scroll-hint {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0;
  animation: fade-in 1s 1.2s forwards;
  z-index: var(--z-above);
}

.scroll-hint-text {
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--t-dim);
}

.scroll-hint-line {
  width: 1px;
  height: 28px;
  background: linear-gradient(to bottom, var(--t-dim), transparent);
  animation: scroll-line 1.8s ease-in-out infinite;
}

@keyframes scroll-line {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero-content { padding: 0 24px; max-width: 100%; }
  .hero-btns { flex-direction: column; }
  .hero-stats { gap: 16px; }
}