/* ==========================================================================
   8. Seção Sobre nós — Mergulho Oceânico + Grade de Cards
   ========================================================================== */

.about-section {
  position: relative;
  /* A coluna d'água vem do campo global; a seção soma apenas brilhos locais */
  background-color: transparent;
  color: var(--color-cream);
  /* Sem overflow:hidden para não recortar sombras ou cards */
  padding: 0 0 clamp(90px, 8vw, 110px);
  isolation: isolate;
}

/* Canvas de partículas subaquáticas — cobre toda a seção */
.ocean-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
}

/* -----------------------------------------------------------------------
   8a. Background do mergulho oceânico
   
   As custom properties --ocean-depth (0–1) e --ocean-light (1–0)
   controlam as camadas de luz da seção e a sensação de imersão.
   ----------------------------------------------------------------------- */

/* Camada base de gradiente — transita de tons petróleo para profundo */
.about-section::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  /*
    A cor base vem do .ocean-field (profundidade global). Aqui ficam
    apenas os brilhos de superfície e um leve adensamento local no fim
    da seção, que acompanha a descida sem competir com o campo global.
  */
  background:
    /* Casa exatamente com a onda do hero e dissolve na água iluminada,
       eliminando a linha de costura entre as duas seções. */
    linear-gradient(180deg, var(--depth-1) 0%, rgba(0, 61, 82, 0) 150px),
    radial-gradient(ellipse 80% 35% at 30% 0%, rgba(0, 200, 196, 0.16) 0%, transparent 58%),
    radial-gradient(ellipse 60% 30% at 70% 0%, rgba(81, 193, 230, 0.10) 0%, transparent 55%);
  transition: opacity 0.1s ease;
}

/* Camada de iluminação de superfície — diminui com a profundidade */
.about-section::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 100% 50% at 50% -10%, rgba(0, 180, 220, 0.22) 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 20% 10%, rgba(98, 220, 228, 0.1) 0%, transparent 50%);
  opacity: var(--ocean-light, 1);
  transition: opacity 0.05s linear;
  pointer-events: none;
  /* Entra sem degrau: a luz de superfície só aparece depois da onda do hero */
  -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 170px);
  mask-image: linear-gradient(180deg, transparent 0, #000 170px);
}

/* -----------------------------------------------------------------------
   8b. Camadas decorativas de fundo
   ----------------------------------------------------------------------- */

.about-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

/* Feixes de luz solar atravessando a água */
.about-bg__light-rays {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 60%;
  overflow: hidden;
  opacity: var(--ocean-light, 1);
  transition: opacity 0.1s linear;
}

.light-ray {
  position: absolute;
  top: -20%;
  width: 2px;
  height: 140%;
  background: linear-gradient(
    180deg,
    rgba(98, 220, 228, 0) 0%,
    rgba(98, 220, 228, 0.12) 30%,
    rgba(81, 193, 230, 0.08) 70%,
    rgba(81, 193, 230, 0) 100%
  );
  transform-origin: top center;
  border-radius: 9999px;
  filter: blur(3px);
}

.light-ray--1 { left: 18%; transform: rotate(-8deg) scaleX(8);  animation: ray-pulse 7s ease-in-out infinite; }
.light-ray--2 { left: 44%; transform: rotate(-2deg) scaleX(11); animation: ray-pulse 10s ease-in-out infinite 1.5s; }
.light-ray--3 { left: 74%; transform: rotate(5deg)  scaleX(7);  animation: ray-pulse 12s ease-in-out infinite 3s; }

@keyframes ray-pulse {
  0%, 100% { opacity: 0.6; transform-origin: top center; }
  50%       { opacity: 1;   }
}

/* Bolhas de luz bioluminescente */
.about-bg__bubbles {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.bubble {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 200, 196, 0.35) 0%, transparent 70%);
  animation: bubble-rise linear infinite;
  will-change: transform, opacity;
}

.bubble--1 { width: 180px; height: 180px; left: 9%;  bottom: -200px; animation-duration: 18s; animation-delay: 0s;  opacity: 0.35; }
.bubble--2 { width: 120px; height: 120px; left: 72%; bottom: -140px; animation-duration: 22s; animation-delay: 4s;  opacity: 0.28; }
.bubble--3 { width:  80px; height:  80px; left: 42%; bottom: -100px; animation-duration: 15s; animation-delay: 8s;  opacity: 0.22; }

.about-section:not(.is-in-view) .light-ray,
.about-section:not(.is-in-view) .bubble {
  animation-play-state: paused;
}

@keyframes bubble-rise {
  0%   { transform: translateY(0)       scale(1);    opacity: 0; }
  10%  {                                             opacity: 1; }
  80%  {                                             opacity: 0.8; }
  100% { transform: translateY(-110vh)  scale(1.15); opacity: 0; }
}

/* -----------------------------------------------------------------------
   8b. Container e Layout
   ----------------------------------------------------------------------- */

.about-container {
  max-width: var(--max-width-content);
  width: 100%;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3.5rem);
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

.about-container--intro {
  padding-top: clamp(5rem, 10vw, 9rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

/* -----------------------------------------------------------------------
   8c. Cabeçalho da seção
   ----------------------------------------------------------------------- */

.about-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto;
}

.about-section-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-turquoise);
  background-color: rgba(0, 200, 196, 0.1);
  border: 1px solid rgba(0, 200, 196, 0.28);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1.25rem;
}

.about-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 1.2rem + 2vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-cream);
  margin-bottom: 1.1rem;
  text-wrap: balance;
}

.about-lead {
  font-size: clamp(1.05rem, 0.95rem + 0.3vw, 1.2rem);
  line-height: 1.65;
  color: var(--color-cream-soft);
  max-width: 60ch;
  margin: 0 auto;
}

/* -----------------------------------------------------------------------
   8d. Manifesto, credenciais e evidências
   ----------------------------------------------------------------------- */

.about-manifesto {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(220px, 0.7fr);
  align-items: end;
  gap: clamp(1.5rem, 4vw, 3rem);
  width: 100%;
  max-width: 1040px;
  margin: clamp(2.5rem, 5vw, 4rem) auto 0;
  padding: clamp(1.5rem, 3vw, 2.5rem) 0;
  border-top: 1px solid rgba(98, 220, 228, 0.18);
  border-bottom: 1px solid rgba(98, 220, 228, 0.12);
}

.about-manifesto__quote {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 1.05rem + 1.9vw, 2.65rem);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.035em;
  color: var(--color-cream);
  margin: 0;
  text-wrap: balance;
}

.about-manifesto__quote::before {
  content: '';
  display: block;
  width: 2.75rem;
  height: 3px;
  margin-bottom: 1.1rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-amber), var(--color-aqua));
}

.about-manifesto__note {
  padding-left: 1rem;
  border-left: 2px solid var(--color-amber);
  font-size: clamp(0.86rem, 0.82rem + 0.12vw, 0.96rem);
  line-height: 1.6;
  color: var(--color-cream-muted);
}

.about-credentials {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(0.9rem, 2.5vw, 2.25rem);
  width: 100%;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.about-credential {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--color-cream-muted);
}

.about-credential strong {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  text-transform: none;
  color: var(--color-aqua);
}

.about-credential--place strong {
  color: var(--color-amber);
}

.about-evidence {
  width: 100%;
  max-width: 1180px;
  margin: clamp(2.5rem, 5vw, 4rem) auto 0;
  padding: clamp(1.35rem, 3vw, 2.5rem);
  background:
    radial-gradient(circle at 8% 0%, rgba(0, 200, 196, 0.08) 0%, transparent 38%),
    linear-gradient(160deg, rgba(2, 45, 60, 0.72) 0%, rgba(1, 27, 39, 0.5) 100%);
  border: 1px solid rgba(0, 200, 196, 0.14);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px -34px rgba(0, 0, 0, 0.8);
}

.about-evidence__header {
  max-width: 760px;
  margin-bottom: clamp(1.25rem, 2.5vw, 1.9rem);
}

.about-evidence__title {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 1.05rem + 1.4vw, 2.15rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-cream);
  margin: 0;
  text-wrap: balance;
}

.about-evidence__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.85rem, 2vw, 1.35rem);
}

.about-stat {
  position: relative;
  padding: clamp(1rem, 2vw, 1.4rem);
  background: rgba(0, 17, 27, 0.38);
  border: 1px solid rgba(98, 220, 228, 0.1);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.about-stat::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--color-turquoise), var(--color-aqua));
}

.about-stat:nth-child(2)::before {
  background: linear-gradient(90deg, var(--color-aqua), var(--color-sky));
}

.about-stat:nth-child(3)::before {
  background: linear-gradient(90deg, var(--color-sky), var(--color-amber));
}

.about-stat__value {
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 1.4rem + 3.2vw, 4rem);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.055em;
  color: var(--color-amber);
  margin: 0;
}

.about-stat__value span {
  font-size: 0.48em;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--color-aqua);
}

.about-stat__value--word {
  font-size: clamp(1.55rem, 1.15rem + 1.4vw, 2.35rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--color-aqua);
}

.about-stat__label {
  margin-top: 0.85rem;
  font-size: clamp(0.83rem, 0.79rem + 0.12vw, 0.92rem);
  line-height: 1.55;
  color: var(--color-cream-soft);
}

.about-stat__source {
  margin-top: 0.9rem;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cream-dim);
}

/* -----------------------------------------------------------------------
   8g. O escalonamento da revelação é definido em JS (--reveal-i), junto
   do sistema global de reveal. Não há mais delays presos ao nth-child.
   ----------------------------------------------------------------------- */

@media (max-width: 899px) {
  .about-manifesto {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 1.25rem;
  }

  .about-manifesto__note {
    max-width: 54ch;
  }

  .about-evidence__grid {
    grid-template-columns: 1fr;
  }
}

/* Celulares (Telas Menores < 640px) */
@media (max-width: 639px) {
  .about-container--intro {
    padding-top: clamp(3rem, 8vw, 5rem);
    padding-bottom: clamp(2rem, 5vw, 3rem);
  }

  .about-credentials {
    justify-content: flex-start;
    gap: 0.75rem 1.25rem;
  }

  .about-credential {
    font-size: 0.65rem;
  }

  .about-credential strong {
    font-size: 1.15rem;
  }
}