/* Fundamentos — mobile-first, theme claro (alineado al sitio) */

.fundamentos-page {
  --fund-bg: #f5f7f9;
  --fund-bg-elevated: #ffffff;
  --fund-bg-card: #ffffff;
  --fund-border: rgba(13, 59, 102, 0.12);
  --fund-accent: rgb(72, 148, 179);
  --fund-accent-soft: rgba(72, 148, 179, 0.12);
  --fund-text: #1e2430;
  --fund-muted: #5c6570;
  --fund-radius: 14px;
  --fund-touch: 48px;

  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  background:
    radial-gradient(120% 80% at 10% -10%, rgba(72, 148, 179, 0.12), transparent 55%),
    radial-gradient(90% 60% at 100% 0%, rgba(13, 59, 102, 0.06), transparent 50%),
    var(--fund-bg);
  color: var(--fund-text);
  padding: 1.25rem 0 3.5rem;
  min-height: 70vh;
}

.fundamentos-page * {
  box-sizing: border-box;
}

.fundamentos-inner {
  width: min(1100px, calc(100% - 1.5rem));
  margin: 0 auto;
}

/* Hero */
.fundamentos-hero {
  margin-bottom: 1.5rem;
  padding: 0.5rem 0 0.25rem;
}

.fundamentos-kicker {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fund-accent);
  margin-bottom: 0.6rem;
  font-weight: 600;
}

.fundamentos-hero h1 {
  font-size: clamp(1.85rem, 6vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.65rem;
  letter-spacing: -0.02em;
  color: #0d3b66;
}

.fundamentos-hero p {
  margin: 0;
  max-width: 36rem;
  color: var(--fund-muted);
  font-size: 1rem;
  line-height: 1.55;
}

/* Category pills — horizontal scroll on mobile */
.fundamentos-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
  padding: 0.35rem 0 1rem;
  margin: 0 0 1rem;
  scrollbar-width: none;
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(to bottom, var(--fund-bg) 70%, transparent);
  padding-top: 0.5rem;
}

.fundamentos-nav::-webkit-scrollbar {
  display: none;
}

.fundamentos-nav-btn {
  flex: 0 0 auto;
  scroll-snap-align: start;
  min-height: var(--fund-touch);
  padding: 0.65rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--fund-border);
  background: var(--fund-bg-elevated);
  color: var(--fund-text);
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(13, 59, 102, 0.04);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.fundamentos-nav-btn:active {
  transform: scale(0.98);
}

.fundamentos-nav-btn.is-active {
  background: var(--fund-accent-soft);
  border-color: var(--fund-accent);
  color: #0d3b66;
  box-shadow: 0 2px 8px rgba(72, 148, 179, 0.18);
}

.fundamentos-nav-btn .fundamentos-nav-num {
  opacity: 0.65;
  margin-right: 0.35rem;
  font-variant-numeric: tabular-nums;
}

/* Panels */
.fundamentos-panel {
  display: none;
  animation: fundFadeIn 0.28s ease;
}

.fundamentos-panel.is-active {
  display: block;
}

@keyframes fundFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fundamentos-panel-head {
  margin-bottom: 1.1rem;
  padding: 1.1rem 1.15rem;
  border-radius: var(--fund-radius);
  background: var(--fund-bg-elevated);
  border: 1px solid var(--fund-border);
  box-shadow: 0 4px 16px rgba(13, 59, 102, 0.05);
}

.fundamentos-panel-head .fundamentos-cat-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  background: var(--fund-accent-soft);
  color: var(--fund-accent);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.65rem;
}

.fundamentos-panel-head h2 {
  font-size: clamp(1.15rem, 3.8vw, 1.45rem);
  font-weight: 700;
  margin: 0 0 0.35rem;
  line-height: 1.3;
  color: #0d3b66;
}

.fundamentos-panel-head p {
  margin: 0;
  color: var(--fund-muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

/* Cards */
.fundamentos-cards {
  display: grid;
  gap: 0.85rem;
}

.fundamentos-card {
  position: relative;
  padding: 1.2rem 1.15rem 1.25rem;
  border-radius: var(--fund-radius);
  background: var(--fund-bg-card);
  border: 1px solid var(--fund-border);
  box-shadow: 0 6px 18px rgba(13, 59, 102, 0.06);
  overflow: hidden;
}

.fundamentos-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--fund-accent), transparent 85%);
}

.fundamentos-card h3 {
  font-size: clamp(1.35rem, 4.5vw, 1.65rem);
  font-weight: 700;
  margin: 0 0 0.35rem;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: #0d3b66;
}

.fundamentos-card .fundamentos-sub {
  display: inline-block;
  margin: 0 0 0.75rem;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  background: var(--fund-accent-soft);
  color: #0d3b66;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.fundamentos-card p {
  margin: 0;
  color: var(--fund-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

@media (min-width: 768px) {
  .fundamentos-page {
    padding: 2rem 0 4.5rem;
  }

  .fundamentos-inner {
    width: min(1100px, calc(100% - 2.5rem));
  }

  .fundamentos-nav {
    gap: 0.65rem;
    margin-bottom: 1.35rem;
    flex-wrap: wrap;
    overflow: visible;
  }

  .fundamentos-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .fundamentos-card {
    padding: 1.4rem 1.35rem 1.45rem;
    transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  }

  .fundamentos-card:hover {
    border-color: rgba(72, 148, 179, 0.35);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(13, 59, 102, 0.1);
  }
}

@media (min-width: 992px) {
  .fundamentos-cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .fundamentos-panel-head {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.35rem 1.5rem;
  }

  .fundamentos-panel-head .fundamentos-cat-index {
    margin-bottom: 0;
    flex-shrink: 0;
  }
}