/* =============================================================================
   triada.css — SINERGÍA Tríada Section
   ============================================================================= */

/* ── Section shell ────────────────────────────────────────────────────────── */
.triada {
  padding: var(--section-pad) var(--container-pad);
  position: relative;
  overflow: hidden;
  /* Diagonal gradient: deep bg → surface */
  background: linear-gradient(
    135deg,
    var(--color-bg) 0%,
    var(--color-surface) 100%
  );
}

/* Soft diagonal line texture */
.triada::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.01) 0px,
    rgba(255, 255, 255, 0.01) 1px,
    transparent 1px,
    transparent 12px
  );
  pointer-events: none;
}

/* ── Three-phase grid ─────────────────────────────────────────────────────── */
.triada__phases {
  display: grid;
  grid-template-columns: 1fr 40px 1fr 40px 1fr;
  align-items: center;
  gap: var(--sp-4);
  margin-top: var(--sp-8);
}

/* ── Phase card ───────────────────────────────────────────────────────────── */
.triada__phase {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  border-top: 4px solid var(--phase-color, var(--color-gold));
  position: relative;
  overflow: hidden;
  transition:
    transform var(--dur-normal) var(--ease-spring),
    box-shadow var(--dur-normal) var(--ease-spring);
}

/* Ambient glow behind card matching phase color */
.triada__phase::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(
    circle,
    var(--phase-color, var(--color-gold)) 0%,
    transparent 70%
  );
  opacity: 0.04;
  pointer-events: none;
}

.triada__phase:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ── Phase header badge ───────────────────────────────────────────────────── */
.triada__phase-header {
  display: inline-block;
  background: var(--phase-color, var(--color-gold));
  color: #ffffff;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--fs-xs);
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--radius-sm);
  margin-bottom: var(--sp-3);
  letter-spacing: 1px;
  text-transform: uppercase;
  line-height: 1;
}

/* ── Phase icon ───────────────────────────────────────────────────────────── */
.triada__phase-icon {
  font-size: 2rem;
  margin-bottom: var(--sp-2);
  display: block;
  line-height: 1;
}

/* ── Phase name ───────────────────────────────────────────────────────────── */
.triada__phase-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-lg);
  color: var(--phase-color, var(--color-gold));
  margin-bottom: var(--sp-3);
  margin-top: 0;
  line-height: 1.2;
}

/* ── Phase description ────────────────────────────────────────────────────── */
.triada__phase-desc {
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.6;
  margin-bottom: var(--sp-3);
}

/* ── Alert list inside phase ──────────────────────────────────────────────── */
.triada__alerts {
  border-top: 1px solid var(--color-surface-2);
  padding-top: var(--sp-3);
}

.triada__alert-title {
  display: block;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--phase-color, var(--color-gold));
  margin-bottom: var(--sp-2);
}

.triada__alerts ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.triada__alerts ul li {
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  padding: var(--sp-1) 0;
  padding-left: var(--sp-3);
  border-bottom: 1px solid var(--color-surface-2);
  position: relative;
  line-height: 1.5;
}

.triada__alerts ul li:last-child {
  border-bottom: none;
}

.triada__alerts ul li::before {
  content: "●";
  position: absolute;
  left: 0;
  color: var(--phase-color, var(--color-gold));
  font-size: 0.5em;
  top: 50%;
  transform: translateY(-50%);
}

/* ── Connector arrows between phases ─────────────────────────────────────── */
.triada__connector {
  font-size: 2rem;
  color: var(--color-gold);
  text-align: center;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  opacity: 0.8;
  transition: opacity var(--dur-fast) var(--ease-in-out);
}

/* ── Source footnote ──────────────────────────────────────────────────────── */
.triada__source {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  color: var(--color-text-faint);
  font-style: italic;
  margin-top: var(--sp-3);
  line-height: 1.5;
}

/* ── Responsive — tablet ──────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .triada__phases {
    grid-template-columns: 1fr 32px 1fr 32px 1fr;
    gap: var(--sp-3);
  }
}

/* ── Responsive — mobile ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .triada__phases {
    grid-template-columns: 1fr;
    gap: var(--sp-4);
  }

  /* Hide connectors on mobile — phases stack vertically */
  .triada__connector {
    display: none;
  }
}