/* ============================================================
   main.css — Neuropharma Landing Page
   Design system: CSS custom properties + BEM naming
   ============================================================ */

/* ── Reset & Box Model ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
img  { max-width: 100%; display: block; }
a    { text-decoration: none; color: inherit; }
ul   { list-style: none; }

/* ── Design Tokens ──────────────────────────────────────────── */
:root {
  --clr-primary:    #1A56DB;
  --clr-primary-dk: #1447c0;
  --clr-accent:     #06b6d4;
  --clr-dark:       #0f172a;
  --clr-mid:        #334155;
  --clr-muted:      #64748b;
  --clr-light:      #f1f5f9;
  --clr-white:      #ffffff;
  --clr-border:     #e2e8f0;

  --font-base: 'Inter', system-ui, sans-serif;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 20px 48px rgba(0,0,0,.14);

  --transition: 200ms ease;
  --max-w: 1200px;
}

body {
  font-family: var(--font-base);
  color: var(--clr-dark);
  background: var(--clr-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Utilities ──────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
}

.section        { padding-block: clamp(4rem, 8vw, 7rem); }
.section--alt   { background: var(--clr-light); }
.section-label  { display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--clr-primary); margin-bottom: .75rem; }
.section-title  { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 800; color: var(--clr-dark); margin-bottom: 3rem; }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .65rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-base);
  font-size: .95rem; font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer; transition: var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--clr-primary);
  color: var(--clr-white);
}
.btn--primary:hover { background: var(--clr-primary-dk); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn--outline {
  background: transparent;
  border-color: var(--clr-white);
  color: var(--clr-white);
}
.btn--outline:hover { background: var(--clr-white); color: var(--clr-primary); transform: translateY(-1px); }

.btn--lg  { padding: .9rem 2.2rem; font-size: 1rem; }
.btn--sm  { padding: .4rem 1rem; font-size: .85rem; }
.btn--full { width: 100%; }

/* ── Navbar ─────────────────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(15, 23, 42, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.navbar__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: 1rem;
}

.navbar__brand { font-size: 1.4rem; font-weight: 800; letter-spacing: -.02em; }
.brand-np      { color: var(--clr-white); }
.brand-pharma  { color: var(--clr-accent); }

.navbar__links {
  display: flex; align-items: center; gap: 2rem;
}
.navbar__links a {
  font-size: .9rem; font-weight: 500;
  color: rgba(255,255,255,.8);
  transition: color var(--transition);
}
.navbar__links a:hover { color: var(--clr-white); }

.navbar__logo {
  height: 38px;
  width: auto;
  display: block;
  object-fit: contain;
}

.footer__logo {
  height: 38px;
  width: auto;
  display: block;
  object-fit: contain;
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  background: var(--clr-dark);
  overflow: hidden;
}

.hero__bg-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  opacity: .35;
}

.hero__bg-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,.95) 40%, rgba(26,86,219,.4) 100%);
}

.hero__content {
  position: relative; z-index: 2;
  max-width: 700px;
  padding-top: 6rem;
}

.hero__badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(6,182,212,.15);
  border: 1px solid rgba(6,182,212,.4);
  color: var(--clr-accent);
  font-size: .8rem; font-weight: 600; letter-spacing: .05em; text-transform: uppercase;
  padding: .35rem .9rem; border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 800;
  color: var(--clr-white);
  line-height: 1.15;
  letter-spacing: -.03em;
  margin-bottom: 1.25rem;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,.75);
  max-width: 560px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

/* ── About ──────────────────────────────────────────────────── */
.about__grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center;
}

.about__text h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800;
  line-height: 1.2; margin-bottom: 1rem;
}
.about__text p { color: var(--clr-mid); line-height: 1.8; font-size: 1.05rem; }

.about__stats {
  display: flex; flex-direction: column; gap: 1.5rem;
}

.stat-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  box-shadow: var(--shadow-sm);
  display: flex; align-items: center; gap: 1.5rem;
}

.stat-card__number {
  font-size: 2.2rem; font-weight: 800; color: var(--clr-primary);
  flex-shrink: 0;
}

.stat-card__label { font-size: .95rem; color: var(--clr-mid); font-weight: 500; }

/* ── Services ───────────────────────────────────────────────── */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.75rem;
}

.service-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

.service-card__icon { font-size: 2.2rem; display: block; margin-bottom: 1rem; }
.service-card__title { font-size: 1.1rem; font-weight: 700; margin-bottom: .6rem; }
.service-card__body  { color: var(--clr-muted); font-size: .95rem; line-height: 1.7; }

/* ── Product ────────────────────────────────────────────────── */
.product__grid {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 5rem; align-items: center;
}

.product__image-wrap {
  background: var(--clr-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
}

.product__img { width: 80%; height: 100%; object-fit: cover; }
.product__img-placeholder { font-size: 6rem; }

.product__info h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800;
  line-height: 1.2; margin-bottom: 1rem;
}

.product__info p { color: var(--clr-mid); line-height: 1.8; margin-bottom: 1.75rem; }

.product__features {
  display: flex; flex-direction: column; gap: .6rem;
  margin-bottom: 2rem;
}
.product__features li {
  font-size: .95rem; color: var(--clr-mid);
  display: flex; align-items: center; gap: .5rem;
}

/* ── Testimonials ───────────────────────────────────────────── */
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

@media (max-width: 900px) {
  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .testimonials__grid {
    grid-template-columns: 1fr;
  }
}

.testimonial-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 1rem;
}

.testimonial-card__stars { color: #f59e0b; font-size: 1.1rem; letter-spacing: .1em; }
.testimonial-card__body  { color: var(--clr-mid); font-size: .95rem; line-height: 1.75; flex: 1; font-style: italic; }

.testimonial-card__author {
  display: flex; align-items: center; gap: .9rem;
  padding-top: 1rem;
  border-top: 1px solid var(--clr-border);
}

.testimonial-card__avatar {
  width: 44px; height: 44px; border-radius: 50%; object-fit: cover; flex-shrink: 0;
}

.testimonial-card__avatar--placeholder {
  background: var(--clr-primary);
  color: var(--clr-white);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 700;
}

.testimonial-card__author strong { font-size: .9rem; display: block; }
.testimonial-card__author span   { font-size: .8rem; color: var(--clr-muted); }

/* ── CTA Section ────────────────────────────────────────────── */
.cta-section { background: var(--clr-primary); }
.cta-section__inner { text-align: center; max-width: 600px; margin-inline: auto; }
.cta-section h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; color: var(--clr-white); margin-bottom: .75rem; }
.cta-section p  { color: rgba(255,255,255,.85); font-size: 1.05rem; margin-bottom: 2rem; }
.cta-section .btn--primary {
  background: var(--clr-white);
  color: var(--clr-primary);
}
.cta-section .btn--primary:hover { background: var(--clr-light); transform: translateY(-2px); }

/* ── Footer ─────────────────────────────────────────────────── */
.footer { background: var(--clr-dark); padding-block: 2.5rem; }
.footer__inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem;
}
.footer__copy { color: rgba(255,255,255,.5); font-size: .875rem; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .about__grid,
  .product__grid { grid-template-columns: 1fr; gap: 3rem; }
  .product__image-wrap { max-width: 420px; margin-inline: auto; }
}

@media (max-width: 640px) {
  .navbar__links a:not(.btn) { display: none; }
  .hero__content { padding-inline: 0; }
  .footer__inner { flex-direction: column; text-align: center; }
}

/* ── Studies ────────────────────────────────────────────────── */
.studies__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.study-card {
  display: flex; flex-direction: column; gap: .9rem;
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  color: var(--clr-dark);
}
.study-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.study-card__header { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.study-card__tag {
  background: rgba(26,86,219,.1); color: var(--clr-primary);
  font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  padding: .2rem .65rem; border-radius: 100px;
}
.study-card__source { font-size: .78rem; color: var(--clr-muted); font-weight: 500; }
.study-card__title  { font-size: 1rem; font-weight: 700; line-height: 1.4; }
.study-card__body   { font-size: .9rem; color: var(--clr-mid); line-height: 1.7; flex: 1; }
.study-card__link   { font-size: .85rem; color: var(--clr-primary); font-weight: 600; margin-top: auto; }

/* ── Videos Reels ───────────────────────────────────────────── */
.videos-section { background: var(--clr-light); }
.reels-group { margin-bottom: 3.5rem; }
.reels-group:last-child { margin-bottom: 0; }
.reels-group__title {
  font-size: 1.1rem; font-weight: 700; color: var(--clr-mid);
  margin-bottom: 1.5rem; padding-top: 1rem;
  border-top: 1px solid var(--clr-border);
}
.reels-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 220px));
  gap: 1.25rem;
  justify-content: center;
}
.reel-card {
  background: var(--clr-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: flex; flex-direction: column;
}
.reel-card__embed {
  position: relative;
  aspect-ratio: 9 / 16;
  background: #000;
  width: 100%;
  overflow: hidden;
}
.reel-card__embed iframe,
.reel-card__embed video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  border: none; object-fit: cover;
}
.reel-card__embed--fb {
  aspect-ratio: 9 / 16;
  min-height: 300px;
}
.reel-card__embed--fb .fb-video { width: 100% !important; }
.reel-card__info { padding: 1rem 1.1rem; display: flex; flex-direction: column; gap: .35rem; }
.reel-card__title { font-size: .9rem; font-weight: 700; line-height: 1.4; color: var(--clr-dark); }
.reel-card__desc  { font-size: .82rem; color: var(--clr-muted); line-height: 1.6; }

@media (max-width: 900px) {
  .reels-grid {
    grid-template-columns: repeat(2, minmax(0, 200px));
  }
}

@media (max-width: 560px) {
  .reels-grid {
    grid-template-columns: repeat(2, minmax(0, 160px));
    gap: .75rem;
  }
}

/* ── Animaciones ────────────────────────────────────────────── */
.anim-fade-up  { opacity: 0; transform: translateY(40px); transition: opacity 600ms ease, transform 600ms ease; }
.anim-fade-in  { opacity: 0; transition: opacity 700ms ease; }
.anim-fade-left  { opacity: 0; transform: translateX(-40px); transition: opacity 600ms ease, transform 600ms ease; }
.anim-fade-right { opacity: 0; transform: translateX(40px);  transition: opacity 600ms ease, transform 600ms ease; }
.anim-fade-up.is-visible, .anim-fade-in.is-visible,
.anim-fade-left.is-visible, .anim-fade-right.is-visible { opacity: 1; transform: translate(0); }
.anim-delay-1 { transition-delay: 100ms; }
.anim-delay-2 { transition-delay: 200ms; }
.anim-delay-3 { transition-delay: 300ms; }
.anim-delay-4 { transition-delay: 400ms; }

/* ── Footer ─────────────────────────────────────────────────── */
.footer { background: var(--clr-dark); padding-block: 3rem; }
.footer__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
.footer__left  { display: flex; flex-direction: column; gap: .75rem; }
.footer__copy  { color: rgba(255,255,255,.5); font-size: .875rem; margin-top: .25rem; }
.footer__privacy { font-size: .78rem; color: rgba(255,255,255,.3); line-height: 1.6; }
.footer__right { display: flex; flex-direction: column; gap: .6rem; }
.footer__right-title {
  font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: rgba(255,255,255,.4); margin-top: 1rem;
}
.footer__right-title:first-child { margin-top: 0; }
.footer__contact-link {
  display: flex; align-items: center; gap: .6rem;
  font-size: .9rem; color: rgba(255,255,255,.7); transition: color var(--transition);
}
.footer__contact-link:hover { color: var(--clr-white); }
.footer__contact-link--wa:hover { color: #25d366; }
.footer__contact-icon { font-size: 1rem; }
.footer__social { display: flex; flex-direction: column; gap: .5rem; }
.footer__social-link {
  display: flex; align-items: center; gap: .65rem;
  font-size: .9rem; font-weight: 500; color: rgba(255,255,255,.7);
  transition: color var(--transition), transform var(--transition);
}
.footer__social-link:hover { color: var(--clr-white); transform: translateX(4px); }
.footer__social-icon { width: 18px; height: 18px; flex-shrink: 0; }

/* ── Testimonials fondo oscuro ──────────────────────────────── */
.testimonials { background: var(--clr-dark); position: relative; overflow: hidden; }
.testimonials::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,.95) 40%, rgba(26,86,219,.4) 100%);
  pointer-events: none;
}
.testimonials .container { position: relative; z-index: 2; }
.testimonials .section-label { color: var(--clr-accent); }
.testimonials .section-title { color: var(--clr-white); }
.testimonials .testimonial-card {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-md); padding: 2rem;
  display: flex; flex-direction: column; gap: 1rem;
}
.testimonials .testimonial-card__stars { color: #f59e0b; }
.testimonials .testimonial-card__body  { color: rgba(255,255,255,.8); font-style: italic; }
.testimonials .testimonial-card__author {
  display: flex; align-items: center; gap: .9rem;
  padding-top: 1rem; border-top: 1px solid rgba(255,255,255,.1);
}
.testimonials .testimonial-card__author strong { color: var(--clr-white); display: block; font-size: .9rem; }
.testimonials .testimonial-card__author span   { color: rgba(255,255,255,.5); font-size: .8rem; }
.testimonials .testimonial-card__avatar { width:44px;height:44px;border-radius:50%;object-fit:cover;flex-shrink:0; }
.testimonials .testimonial-card__avatar--placeholder {
  width:44px;height:44px;border-radius:50%;background:var(--clr-primary);color:var(--clr-white);
  display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:700;flex-shrink:0;
}

@media (max-width: 640px) {
  .footer__inner { grid-template-columns: 1fr; gap: 2rem; }
}

/* ── Studies Grid 4 columnas ────────────────────────────────── */
.studies__grid {
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: 2rem;
}

/* ── Studies Carrusel ───────────────────────────────────────── */
.studies-carousel { overflow: hidden; margin-top: 1.5rem; }
.studies-carousel__track {
  display: flex;
  transition: transform 400ms ease;
}
.studies-carousel__slide {
  min-width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
  padding: 0 .25rem;
}

/* Controles carrusel */
.carousel__controls {
  display: flex; align-items: center; justify-content: center; gap: 1rem;
  margin-top: 1.5rem;
}
.carousel__btn {
  background: var(--clr-white); border: 1px solid var(--clr-border);
  border-radius: 50%; width: 40px; height: 40px;
  font-size: 1.1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition); color: var(--clr-dark);
}
.carousel__btn:hover { background: var(--clr-primary); color: var(--clr-white); border-color: var(--clr-primary); }
.carousel__dots { display: flex; gap: .5rem; }
.carousel__dot {
  width: 10px; height: 10px; border-radius: 50%;
  border: none; cursor: pointer; background: var(--clr-border);
  transition: background var(--transition); padding: 0;
}
.carousel__dot.active { background: var(--clr-primary); }

@media (max-width: 900px) {
  .studies__grid { grid-template-columns: repeat(2, 1fr); }
  .studies-carousel__slide { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .studies__grid { grid-template-columns: 1fr; }
  .studies-carousel__slide { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .testimonials__grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 1rem;
    padding-bottom: 1rem;
    -webkit-overflow-scrolling: touch;
  }

  .testimonials__grid::-webkit-scrollbar {
    height: 4px;
  }

  .testimonials__grid::-webkit-scrollbar-track {
    background: rgba(255,255,255,.1);
    border-radius: 10px;
  }

  .testimonials__grid::-webkit-scrollbar-thumb {
    background: var(--clr-primary);
    border-radius: 10px;
  }

  .testimonial-card {
    min-width: 280px;
    max-width: 280px;
    scroll-snap-align: start;
    flex-shrink: 0;
  }
}

.hero__full {
  width: 100%;
  display: flex;
  align-items: center;
}

.hero .container {
  display: flex;
  justify-content: flex-start;
  padding-inline-start: clamp(1rem, 4vw, 4rem);
  width: 100%;
}
.stat-card__number{
    font-size: 1.3rem;
}
.navbar .btn--outline:hover {
  background: var(--clr-white);
  color: var(--clr-primary) !important;
}
.navbar .btn--outline:hover {
  background: #ffffff !important;
  color: #1A56DB !important;
  border-color: #ffffff !important;
}