/* ─────────────────────────────────────────────────────────────────
   sections.css — Technology · Heritage · Community · Newsletter
   Paleta: Lifan Navy #1b2461 · Blue #2b4db5 · Red #e31e24 · White
   ───────────────────────────────────────────────────────────────── */

/* ═══════════════════════════════════════════════════════════════
   1. TECHNOLOGY
   ═══════════════════════════════════════════════════════════════ */
.tech-section {
  background: linear-gradient(135deg, #0a0829 0%, #1e1b5e 100%);
  color: var(--lifan-white);
  border-bottom: 5px solid var(--lifan-red);
  border-top: 5px solid var(--lifan-red);
}

.tech-section__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.tech-section .section-heading__title { color: var(--lifan-white); }
.tech-section .section-heading__text  { color: rgba(255,255,255,.68); }

/* ── Acordeón ── */
.tech-accordion {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.tech-acc-item {
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  overflow: hidden;
  transition: background var(--transition), border-color var(--transition);
}
.tech-acc-item.is-open,
.tech-acc-item:hover {
  background: rgba(255,255,255,.09);
  border-color: rgba(43,77,181,.5);
}

.tech-acc-item__head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  color: var(--lifan-white);
}

.tech-pillar__dot {
  flex-shrink: 0;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--lifan-red);
  box-shadow: 0 0 0 4px rgba(227,30,36,.2);
  transition: box-shadow var(--transition);
}
.tech-acc-item.is-open .tech-pillar__dot { box-shadow: 0 0 0 6px rgba(227,30,36,.3); }

.tech-acc-item__label {
  flex: 1;
  font-size: 16px;
  font-weight: 700;
}

.tech-acc-item__icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition), background var(--transition);
}
.tech-acc-item__icon::before {
  content: '+';
  font-size: 16px;
  line-height: 1;
  color: rgba(255,255,255,.7);
  transition: transform var(--transition);
}
.tech-acc-item.is-open .tech-acc-item__icon { background: var(--lifan-red); border-color: var(--lifan-red); }
.tech-acc-item.is-open .tech-acc-item__icon::before { content: '−'; color: var(--lifan-white); }

/* Body desplegable */
.tech-acc-item__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .4s ease;
  padding: 0 20px;
}
.tech-acc-item.is-open .tech-acc-item__body {
  max-height: 400px;
  padding: 0 20px 20px;
}

.tech-acc-item__body p {
  margin: 0 0 12px;
  font-size: 14px;
  color: rgba(255,255,255,.7);
  line-height: 1.65;
}

.tech-acc-item__list {
  list-style: none;
  display: grid;
  gap: 7px;
}
.tech-acc-item__list li {
  font-size: 13px;
  color: rgba(255,255,255,.6);
  padding-left: 18px;
  position: relative;
}
.tech-acc-item__list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--lifan-red);
  font-weight: 700;
}

/* ── Visual ── */
.tech-section__visual { position: relative; }

.tech-section__image {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  aspect-ratio: 4/3;
  box-shadow: 0 24px 60px rgba(0,0,0,.4);
  border: 1px solid rgba(255,255,255,.07);
  transition: transform .45s ease, opacity .4s ease;
}
.tech-section__visual:hover .tech-section__image { transform: scale(1.02); }
.tech-section__image.is-swapping { opacity: 0; transform: scale(.97); }

.tech-section__image-badge {
  position: absolute;
  bottom: 22px;
  left: 22px;
  padding: 12px 20px;
  background: rgba(8,12,29,.88);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.1);
  border-left: 3px solid var(--lifan-red);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.tech-section__image-badge span  { font-size: 17px; font-weight: 900; letter-spacing: .1em; color: var(--lifan-white); }
.tech-section__image-badge small { font-size: 11px; color: rgba(255,255,255,.55); letter-spacing: .06em; }

/* ═══════════════════════════════════════════════════════════════
   2. HERITAGE
   ═══════════════════════════════════════════════════════════════ */
.heritage-section { background: var(--lifan-white); }

.heritage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}

.heritage-image-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--lifan-line);
}
.heritage-image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}
.heritage-image-wrap:hover .heritage-image { transform: scale(1.04); }

.heritage-content__title {
  margin: 0 0 18px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.15;
  color: var(--lifan-navy);
}
.heritage-content p { color: var(--lifan-text-soft); margin: 0 0 16px; font-size: 15px; }
.heritage-content .button { margin-top: 8px; }

/* Stats */
.heritage-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 40px;
  border-top: 2px solid var(--lifan-line);
}

.heritage-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  padding: 24px 12px;
  border-radius: var(--radius-md);
  transition: background var(--transition), transform var(--transition);
}
.heritage-stat:hover { background: var(--lifan-bg); transform: translateY(-4px); }

.heritage-stat__number {
  display: block;
  font-size: clamp(38px, 4.5vw, 54px);
  font-weight: 900;
  color: var(--lifan-red);
  line-height: 1;
  letter-spacing: -.02em;
  /* Glow permanente sutil */
  text-shadow: 0 2px 8px rgba(227,30,36,.25);
  transition: text-shadow var(--transition), transform var(--transition);
}
.heritage-stat:hover .heritage-stat__number {
  text-shadow: 0 0 24px rgba(227,30,36,.55), 0 4px 14px rgba(227,30,36,.3);
  transform: scale(1.1);
}

/* Animación de entrada (añadida por JS con clase .is-counted) */
@keyframes statReveal {
  0%   { opacity: 0; transform: scale(.6) translateY(10px); }
  60%  { transform: scale(1.12) translateY(-4px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}
.heritage-stat.is-counted .heritage-stat__number {
  animation: statReveal .7s cubic-bezier(.34,1.56,.64,1) both;
}

.heritage-stat__label {
  font-size: 11px;
  color: var(--lifan-text-soft);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: 700;
}

/* ═══════════════════════════════════════════════════════════════
   3. COMMUNITY
   ═══════════════════════════════════════════════════════════════ */
.community-section { background: var(--lifan-bg); }

.community-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

.community-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--lifan-white);
  border: 1px solid var(--lifan-line);
  box-shadow: var(--shadow-sm);
  position: relative;
  transform-style: preserve-3d;
  transition: box-shadow var(--transition), border-color var(--transition);
  will-change: transform;
}
.community-card:hover { box-shadow: var(--shadow-md); border-color: rgba(30,27,94,.18); }

.community-card__image-wrap { height: 220px; overflow: hidden; position: relative; flex-shrink: 0; }
.community-card__image {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .5s ease;
}
.community-card:hover .community-card__image { transform: scale(1.07); }

/* Gradient reveal desde abajo al hover */
.community-card__image-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(30,27,94,.55) 0%, transparent 60%);
  opacity: 0;
  transition: opacity .35s ease;
  z-index: 1;
}
.community-card:hover .community-card__image-wrap::before { opacity: 1; }

/* Línea de acento top */
.community-card__image-wrap::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--lifan-red), var(--lifan-blue-mid));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
  z-index: 2;
}
.community-card:hover .community-card__image-wrap::after { transform: scaleX(1); }

.community-card__body { flex: 1; display: flex; flex-direction: column; gap: 12px; padding: 24px; }
.community-card__title { margin: 0; font-size: 19px; color: var(--lifan-navy); transition: color var(--transition); }
.community-card:hover .community-card__title { color: var(--lifan-red); }
.community-card__text  { margin: 0; font-size: 14px; color: var(--lifan-text-soft); line-height: 1.65; flex: 1; }
.community-card__body .button { align-self: flex-start; margin-top: auto; }

/* ═══════════════════════════════════════════════════════════════
   4. NEWSLETTER
   ═══════════════════════════════════════════════════════════════ */
.newsletter-section {
  padding: 64px 0 72px;
  background: #12103a;
  border-top: 1px solid rgba(255,255,255,.06);
  /* Línea divisoria decorativa hacia el footer */
  border-bottom: 1px solid rgba(255,255,255,.0);
  position: relative;
}
/* Divisor degradado entre newsletter y footer */
.newsletter-section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  max-width: 900px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(227,30,36,.5) 30%, rgba(43,77,181,.5) 70%, transparent);
}

.newsletter-section__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
}

.newsletter-section__title {
  margin: 0 0 10px;
  font-size: clamp(22px, 3vw, 30px);
  color: var(--lifan-white);
}
.newsletter-section__text {
  margin: 0 0 24px;
  color: rgba(255,255,255,.62);
  font-size: 15px;
  max-width: 480px;
}

.newsletter-form__row { display: flex; gap: 12px; flex-wrap: wrap; }
.newsletter-form__input {
  flex: 1;
  min-width: 200px;
  height: 48px;
  padding: 0 20px;
  border-radius: 3px;
  border: 1px solid rgba(255,255,255,.15);
  background: rgba(255,255,255,.07);
  color: var(--lifan-white);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}
.newsletter-form__input::placeholder { color: rgba(255,255,255,.35); }
.newsletter-form__input:focus { border-color: var(--lifan-blue-mid); background: rgba(255,255,255,.1); }

.newsletter-section__subtitle { margin: 0 0 18px; font-size: 17px; color: var(--lifan-white); }

.social-links { display: flex; gap: 12px; flex-wrap: wrap; }
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  color: rgba(255,255,255,.75);
  transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}
.social-link:hover {
  background: var(--lifan-red);
  border-color: var(--lifan-red);
  color: var(--lifan-white);
  transform: translateY(-3px);
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
  .tech-section__grid, .heritage-grid, .newsletter-section__grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .community-grid { grid-template-columns: 1fr 1fr; }
  .heritage-stats  { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .community-grid  { grid-template-columns: 1fr; }
  .heritage-stats  { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .tech-section__grid { gap: 36px; }
  .newsletter-form__row { flex-direction: column; }
  .newsletter-form__input { min-width: 100%; }
}