/* ============================================================
   JARA Voxbridge — HOW IT WORKS  (voxbridge.html only)
   ------------------------------------------------------------
   A calm trust layer: three connected pipeline steps + two
   architecture/privacy notes. Loaded after styles.css and
   voxbridge-cinema.css so it inherits the full theme stack.

   Rules:
   1) ZERO hardcoded hex colours — only var(--t-*) tokens.
   2) Every animation gates on prefers-reduced-motion.
   3) RTL-aware (logical properties where appropriate).
   ============================================================ */

/* ---------- Section spacing ---------- */
#how-it-works {
  position: relative;
  isolation: isolate;
}

/* ---------- Heading ---------- */
#how-it-works .detail-heading {
  text-align: center;
  margin-bottom: clamp(40px, 5vw, 56px);
}

/* ---------- Flow — the three pipeline steps ---------- */
.how-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: start;
  gap: 0;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 clamp(16px, 3vw, 24px);
}

/* ---------- Step card ---------- */
.how-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: clamp(10px, 1.5vw, 16px);
  padding: clamp(20px, 3vw, 32px) clamp(12px, 2vw, 20px);
  border-radius: 20px;
  border: 1px solid var(--t-border);
  background: linear-gradient(180deg, var(--t-bg-glass-1), var(--t-bg-glass-2));
  position: relative;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.how-step.is-visible {
  opacity: 1;
  transform: none;
}
.how-step:nth-child(1) { transition-delay: 0s; }
.how-step:nth-child(3) { transition-delay: 0.12s; }
.how-step:nth-child(5) { transition-delay: 0.24s; }

/* Step accent ring — a subtle circle that echoes the lamp */
.how-step__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(var(--t-accent-bright-rgb), 0.45);
  background: rgba(var(--t-accent-rgb), 0.08);
  font-size: 16px;
  font-weight: 600;
  color: var(--t-accent-bright);
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.how-step strong {
  font-size: clamp(15px, 1.2vw, 17px);
  font-weight: 600;
  color: var(--t-text);
  line-height: 1.25;
}

.how-step p {
  font-size: clamp(13px, 0.95vw, 14px);
  line-height: 1.5;
  color: var(--t-text-soft);
  max-width: 22ch;
  margin: 0;
}

/* ---------- Bridge connector between steps ---------- */
.how-bridge {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  padding: 0 4px;
  position: relative;
}

.how-bridge::before {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  margin-top: 28px;
  background: linear-gradient(
    90deg,
    rgba(var(--t-accent-rgb), 0.16),
    rgba(var(--t-accent-bright-rgb), 0.50),
    rgba(var(--t-accent-rgb), 0.16)
  );
  opacity: 0;
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: opacity 0.6s ease 0.5s, transform 0.8s cubic-bezier(.2, .8, .25, 1) 0.5s;
}
.how-bridge.is-visible::before {
  opacity: 1;
  transform: scaleX(1);
}

/* A small accent dot on the bridge */
.how-bridge::after {
  content: "";
  position: absolute;
  left: 50%;
  top: calc(28px - 3px);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--t-accent-bright);
  translate: -50% 0;
  opacity: 0;
  transition: opacity 0.4s ease 0.7s;
}
.how-bridge.is-visible::after {
  opacity: 1;
}

/* ---------- Trust notes — architecture + privacy ---------- */
.how-trust {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(16px, 2.5vw, 24px);
  max-width: 780px;
  margin: clamp(32px, 5vw, 48px) auto 0;
  padding: 0 clamp(16px, 3vw, 24px);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease 0.4s, transform 0.7s ease 0.4s;
}
.how-trust.is-visible {
  opacity: 1;
  transform: none;
}

.how-trust__item {
  display: flex;
  align-items: flex-start;
  gap: clamp(12px, 2vw, 16px);
  padding: clamp(16px, 2.5vw, 24px);
  border-radius: 16px;
  border: 1px solid var(--t-border-soft);
  background: linear-gradient(180deg, var(--t-bg-card-1), var(--t-bg-card-2));
}

.how-trust__icon {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(var(--t-accent-bright-rgb), 0.40);
  background: rgba(var(--t-accent-rgb), 0.06);
  color: var(--t-accent-bright);
  font-size: 15px;
}

.how-trust__copy strong {
  display: block;
  font-size: clamp(14px, 1vw, 15px);
  font-weight: 600;
  color: var(--t-text);
  line-height: 1.3;
  margin-bottom: 4px;
}

.how-trust__copy p {
  font-size: clamp(12px, 0.85vw, 13px);
  line-height: 1.5;
  color: var(--t-text-soft);
  margin: 0;
}

/* ---------- Decorative background conic (optional depth layer) ---------- */
@supports ((-webkit-mask-image: radial-gradient(#000, #000)) or (mask-image: radial-gradient(#000, #000))) {
  #how-it-works::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 40%;
    width: min(80%, 960px);
    aspect-ratio: 1.6;
    translate: -50% 0;
    z-index: -1;
    border-radius: 50%;
    pointer-events: none;
    background: conic-gradient(
      from 0deg,
      rgba(var(--t-accent-rgb), 0.06),
      rgba(var(--t-accent-bright-rgb), 0.03) 120deg,
      rgba(var(--t-accent-rgb), 0.06) 240deg,
      rgba(var(--t-accent-bright-rgb), 0.02) 360deg
    );
    -webkit-mask: radial-gradient(closest-side, #000 8%, rgba(0, 0, 0, 0.3) 54%, transparent 78%);
            mask: radial-gradient(closest-side, #000 8%, rgba(0, 0, 0, 0.3) 54%, transparent 78%);
    opacity: 0.5;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .how-flow {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .how-step {
    text-align: center;
    align-items: center;
    max-width: 360px;
    margin: 0 auto;
  }

  /* Bridge becomes a vertical connector between stacked cards */
  .how-bridge {
    min-width: 0;
    min-height: 28px;
    padding: 0;
    justify-self: center;
  }
  .how-bridge::before {
    width: 1px;
    height: 100%;
    margin-top: 0;
    margin-left: auto;
    margin-right: auto;
    background: linear-gradient(
      180deg,
      rgba(var(--t-accent-rgb), 0.16),
      rgba(var(--t-accent-bright-rgb), 0.50),
      rgba(var(--t-accent-rgb), 0.16)
    );
    transform-origin: 50% 0;
  }
  .how-bridge::after {
    left: 50%;
    top: 50%;
    translate: -50% -50%;
  }

  .how-trust {
    grid-template-columns: 1fr;
  }
}

/* ---------- prefers-reduced-motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .how-step,
  .how-trust {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .how-bridge::before {
    opacity: 1;
    transform: scaleX(1);
    transition: none;
  }
  .how-bridge::after {
    opacity: 1;
    transition: none;
  }

  #how-it-works::before {
    opacity: 0.5;
  }
}