:root {
    --azul: #0ea5e9;
    --azul-oscuro: #071e36;
    --azul-medio: #0056a3;
    --celeste: #7bcce8;
    --azul-suave: #eef4ff;
    --tinta: #102544;
    --negro: #0f172a;
    --blanco: #ffffff;
    --gris-claro: #f5f7fb;
    --gris-borde: rgba(30, 74, 144, 0.14);
    --sombra: 0 16px 40px rgba(20, 45, 92, 0.14);
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }

  body {
    font-family: "Barlow", sans-serif;
    color: var(--tinta);
    background:
      radial-gradient(circle at top left, rgba(123, 204, 232, 0.16), transparent 28%),
      linear-gradient(180deg, #f8fbff 0%, #ffffff 28%, #f8fbff 100%);
    overflow-x: hidden;
  }

  body > nav {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 120;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 2rem;
    background: rgba(22, 54, 114, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(123, 204, 232, 0.18);
    transform: translateY(-100%);
    transition: transform 0.35s ease;
  }

  body > nav.visible { transform: translateY(0); }

  .nav-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--blanco);
    font-family: "Barlow Condensed", sans-serif;
    font-size: 1.05rem;
    font-weight: 900;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .nav-brand span { color: var(--celeste); }

  .nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(123, 204, 232, 0.35);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--blanco);
    align-items: center;
    justify-content: center;
    cursor: pointer;
  }

  .nav-toggle-bars {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .nav-toggle-bars span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 99px;
    background: currentColor;
  }

  .nav-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.8rem;
  }

  .nav-link {
    text-decoration: none;
    padding: 0.55rem 1.2rem;
    border-radius: 4px;
    font-family: "Barlow Condensed", sans-serif;
    font-size: 0.83rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .nav-link-primary {
    background: var(--celeste);
    color: var(--negro);
  }

  .nav-link-secondary {
    color: var(--celeste);
    border: 1px solid rgba(123, 204, 232, 0.4);
  }

  .hero {
    position: relative;
    min-height: 76vh;
    display: flex;
    align-items: center;
    padding: 7rem 2rem 5rem;
    background:
      radial-gradient(circle at 15% 20%, rgba(123, 204, 232, 0.22), transparent 24%),
      radial-gradient(circle at 85% 18%, rgba(255, 255, 255, 0.12), transparent 22%),
      linear-gradient(135deg, var(--azul-oscuro) 0%, var(--azul) 58%, var(--azul-medio) 100%);
    overflow: hidden;
  }

  .hero::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 88px;
    background: var(--blanco);
    clip-path: polygon(0 100%, 100% 100%, 100% 0);
  }

  .hero-inner,
  .section-inner,
  .cta-final-inner {
    width: min(1200px, 100%);
    margin: 0 auto;
    position: relative;
    z-index: 1;
  }

  .hero-badge,
  .section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: "Barlow Condensed", sans-serif;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.24em;
    text-transform: uppercase;
  }

  .hero-badge {
    margin-bottom: 1rem;
    color: var(--celeste);
    background: rgba(123, 204, 232, 0.15);
    border: 1px solid rgba(123, 204, 232, 0.35);
    padding: 0.42rem 1rem;
    border-radius: 999px;
  }

  .hero-logo {
    margin-bottom: 0.9rem;
    color: rgba(255, 255, 255, 0.62);
    font-family: "Barlow Condensed", sans-serif;
    font-size: clamp(0.85rem, 2.4vw, 1.05rem);
    font-weight: 900;
    letter-spacing: 0.3em;
    text-transform: uppercase;
  }

  .hero h1 {
    margin-bottom: 1rem;
    color: var(--blanco);
    font-family: "Playfair Display", serif;
    font-size: clamp(2.6rem, 5.6vw, 5rem);
    line-height: 0.98;
    max-width: 820px;
  }

  .hero-sub {
    max-width: 760px;
    color: rgba(255, 255, 255, 0.82);
    font-size: clamp(1rem, 1.6vw, 1.12rem);
    font-weight: 300;
    line-height: 1.7;
    margin-bottom: 1.5rem;
  }

  .hero-actions,
  .cta-group,
  .search-filters,
  .result-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .cta-group {
    justify-content: center;
  }

  .hero-cta,
  .cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0.95rem 1.6rem;
    border-radius: 4px;
    text-decoration: none;
    font-family: "Barlow Condensed", sans-serif;
    font-size: 0.98rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .hero-cta-primary,
  .cta-btn-primary {
    background: var(--celeste);
    color: var(--negro);
    box-shadow: 0 12px 28px rgba(123, 204, 232, 0.28);
  }

  .hero-cta-secondary,
  .cta-btn-secondary {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.28);
    color: var(--blanco);
  }

  .section {
    padding: 5.5rem 1.5rem;
  }

  .section-eyebrow {
    color: var(--azul);
    margin-bottom: 1rem;
  }

  .section-eyebrow::before {
    content: "";
    width: 28px;
    height: 2px;
    background: var(--celeste);
  }

  .section-title {
    max-width: 800px;
    margin-bottom: 1.2rem;
    color: var(--azul-oscuro);
    font-family: "Playfair Display", serif;
    font-size: clamp(2rem, 4.6vw, 3.8rem);
    line-height: 1.08;
  }

  .section-intro {
    max-width: 820px;
    color: #4e6788;
    line-height: 1.75;
    font-size: 1.02rem;
    margin-bottom: 2rem;
  }

  .search-card,
  .result-card,
  .source-item,
  .summary-card {
    background: var(--blanco);
    border: 1px solid var(--gris-borde);
    border-radius: 24px;
    box-shadow: var(--sombra);
  }

  .summary-grid,
  .results-grid,
  .source-list {
    display: grid;
    gap: 1rem;
  }

  .summary-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .summary-card {
    padding: 1.4rem;
  }

  .summary-card strong {
    display: block;
    font-family: "Barlow Condensed", sans-serif;
    font-size: 1rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--azul);
    margin-bottom: 0.4rem;
  }

  .summary-card p,
  .source-item,
  .result-card p {
    color: #496684;
    line-height: 1.72;
  }

  .search-card {
    padding: 1.6rem;
    margin-bottom: 1.4rem;
  }

  .search-controls {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1rem;
    margin-bottom: 1rem;
  }

  .search-input {
    width: 100%;
    min-height: 54px;
    border-radius: 16px;
    border: 1px solid rgba(30, 74, 144, 0.18);
    padding: 0 1rem;
    font: inherit;
    font-size: 1rem;
    color: var(--azul-oscuro);
    background: #fbfdff;
  }

  .search-filter,
  .tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
    line-height: 1.2;
  }

  .search-filter {
    border: 1px solid rgba(30, 74, 144, 0.12);
    background: var(--gris-claro);
    color: var(--azul);
    cursor: pointer;
  }

  .search-filter.active {
    background: var(--azul-oscuro);
    color: var(--blanco);
    border-color: var(--azul-oscuro);
  }

  .search-help {
    color: #56708f;
    line-height: 1.7;
  }

  .result-card {
    padding: 1.45rem;
  }

  .result-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.8rem;
  }

  .result-card h3 {
    color: var(--azul-oscuro);
    font-family: "Playfair Display", serif;
    font-size: 1.45rem;
    margin-bottom: 0.35rem;
  }

  .tag {
    background: rgba(123, 204, 232, 0.17);
    color: var(--azul-oscuro);
  }

  .score-stack {
    display: grid;
    gap: 0.6rem;
    margin: 1rem 0;
  }

  .option-list {
    display: grid;
    gap: 1rem;
    margin-top: 1.2rem;
  }

  .option-card {
    padding: 1.1rem;
    border-radius: 20px;
    background: linear-gradient(180deg, #f9fbff 0%, #ffffff 100%);
    border: 1px solid rgba(30, 74, 144, 0.12);
  }

  .option-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.75rem;
  }

  .option-title {
    color: var(--azul-oscuro);
    font-family: "Barlow Condensed", sans-serif;
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.2rem;
  }

  .option-city {
    color: #5a7391;
    font-size: 0.94rem;
  }

  .option-family {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 0.42rem 0.85rem;
    border-radius: 999px;
    background: rgba(30, 74, 144, 0.08);
    color: var(--azul);
    font-family: "Barlow Condensed", sans-serif;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .option-note {
    color: #4d6786;
    line-height: 1.72;
    margin-bottom: 0.85rem;
  }

  .option-link-row {
    display: flex;
    justify-content: flex-start;
    margin-top: 0.2rem;
  }

  .score-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 0.95rem;
    border-radius: 16px;
    background: var(--gris-claro);
    border: 1px solid rgba(30, 74, 144, 0.08);
  }

  .score-year {
    color: var(--azul);
    font-family: "Barlow Condensed", sans-serif;
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .score-meta {
    color: #56708e;
    font-size: 0.92rem;
  }

  .score-value {
    color: var(--azul-oscuro);
    font-family: "Barlow Condensed", sans-serif;
    font-size: 1.2rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    white-space: nowrap;
  }

  .result-link {
    display: inline-flex;
    margin-top: 0.4rem;
    color: var(--azul);
    font-family: "Barlow Condensed", sans-serif;
    font-size: 0.92rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
  }

  .empty-state {
    padding: 1.6rem;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.75);
    border: 1px dashed rgba(30, 74, 144, 0.22);
    color: #4f6988;
    line-height: 1.8;
  }

  .sources {
    background: linear-gradient(180deg, rgba(30, 74, 144, 0.04), rgba(123, 204, 232, 0.08));
  }

  .source-item {
    padding: 1rem 1.1rem;
  }

  .source-item strong {
    display: block;
    color: var(--azul-oscuro);
    margin-bottom: 0.3rem;
  }

  .source-item a {
    color: var(--azul);
    font-weight: 700;
  }

  .cta-final {
    position: relative;
    overflow: hidden;
    padding: 5rem 1.5rem;
    background: linear-gradient(135deg, #112b5f 0%, #1c488e 58%, #2d63b8 100%);
    color: var(--blanco);
    text-align: center;
  }

  .cta-final::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      radial-gradient(circle at 50% -5%, rgba(123, 204, 232, 0.3), transparent 32%),
      radial-gradient(circle at 100% 100%, rgba(255, 255, 255, 0.1), transparent 20%);
    pointer-events: none;
  }

  .cta-final h2 {
    font-family: "Playfair Display", serif;
    font-size: clamp(2rem, 4vw, 3.3rem);
    line-height: 1.1;
    margin-bottom: 1rem;
  }

  .cta-final p {
    max-width: 700px;
    margin: 0 auto 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.75;
  }

  footer {
    padding: 2rem 1.5rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.78);
    background: #0d224d;
    line-height: 1.7;
  }

  footer strong { color: rgba(255, 255, 255, 0.95); }

  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }

  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }

  @media (max-width: 980px) {
    .summary-grid,
    .search-controls {
      grid-template-columns: 1fr;
    }
  }

  @media (max-width: 700px) {
    body > nav {
      padding: 0.85rem 1rem;
      align-items: center;
      flex-wrap: wrap;
    }

    .nav-brand {
      font-size: 0.95rem;
    }

    .nav-toggle {
      display: inline-flex;
      margin-left: auto;
    }

    .nav-actions {
      position: static;
      width: 100%;
      justify-content: flex-start;
      display: none;
      flex-direction: column;
      padding-top: 0.5rem;
    }

    body > nav.menu-open .nav-actions { display: flex; }

    .nav-link {
      width: 100%;
      text-align: center;
    }
    .hero,
    .section,
    .cta-final {
      padding-left: 1rem;
      padding-right: 1rem;
    }

    .hero-actions,
    .cta-group,
    .search-filters {
      justify-content: center;
      align-items: center;
    }

    .hero-cta,
    .cta-btn {
      width: min(100%, 320px);
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }

    .result-header,
    .option-header {
      flex-direction: column;
      align-items: flex-start;
    }

    .score-row {
      flex-direction: row;
      align-items: center;
      justify-content: space-between;
    }
  }