/* Historia Bancaria de España — design tokens */
:root {
  --ink: #141c28;
  --navy: #1a2d44;
  --navy-deep: #0f1a28;
  --stone: #e8e2d6;
  --stone-light: #f5f1ea;
  --paper: #faf8f4;
  --gold: #c9a227;
  --gold-soft: #e8d48a;
  --crimson: #9e1b2e;
  --crimson-deep: #6f1220;
  --muted: #5c6570;
  --line: rgba(20, 28, 40, 0.12);
  --shadow: 0 18px 50px rgba(15, 26, 40, 0.18);
  --radius: 4px;
  --font-display: "Fraunces", "Times New Roman", serif;
  --font-body: "Sora", "Segoe UI", sans-serif;
  --max: 1120px;
  --header-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(201, 162, 39, 0.12), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 20%, rgba(158, 27, 46, 0.08), transparent 50%),
    linear-gradient(180deg, var(--paper) 0%, var(--stone-light) 45%, var(--paper) 100%);
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(15, 26, 40, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201, 162, 39, 0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #fff;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--gold-soft), var(--gold) 55%, #8a6e12);
  display: grid;
  place-items: center;
  color: var(--navy-deep);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 0 0 2px rgba(201, 162, 39, 0.35);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-text span {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-soft);
  opacity: 0.9;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.nav a {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--gold-soft);
}

.nav-cta {
  background: var(--crimson);
  color: #fff !important;
  padding: 0.55rem 1rem;
  border-radius: var(--radius);
  font-weight: 600;
  transition: background 0.2s ease, transform 0.2s ease;
}

.nav-cta:hover {
  background: var(--crimson-deep);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100svh - var(--header-h));
  display: grid;
  align-items: end;
  color: #fff;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  animation: heroZoom 18s ease-out forwards;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(15, 26, 40, 0.88) 0%, rgba(15, 26, 40, 0.55) 48%, rgba(15, 26, 40, 0.35) 100%),
    linear-gradient(0deg, rgba(15, 26, 40, 0.75) 0%, transparent 45%);
}

@keyframes heroZoom {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 4.5rem 0 5rem;
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
  max-width: 720px;
  margin-left: max(1.25rem, calc((100% - var(--max)) / 2));
}

.hero-content h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4.1rem);
  font-weight: 650;
  line-height: 1.08;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
  animation: riseIn 0.9s ease both;
}

.hero-lead {
  font-size: clamp(1.02rem, 2vw, 1.2rem);
  color: rgba(255, 255, 255, 0.88);
  max-width: 38ch;
  margin: 0 0 1.75rem;
  animation: riseIn 0.9s ease 0.12s both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  animation: riseIn 0.9s ease 0.24s both;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.35rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--crimson);
  color: #fff;
  box-shadow: 0 10px 28px rgba(158, 27, 46, 0.35);
}

.btn-primary:hover {
  background: var(--crimson-deep);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.45);
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold-soft);
}

/* Sections common */
section {
  padding: 5rem 0;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--crimson);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.5vw, 2.65rem);
  line-height: 1.15;
  margin: 0 0 0.85rem;
  color: var(--navy);
  letter-spacing: -0.02em;
}

.section-lead {
  color: var(--muted);
  max-width: 52ch;
  margin: 0 0 2.5rem;
  font-size: 1.05rem;
}

/* Intro / value */
.intro {
  padding-top: 4.5rem;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
}

.intro-visual {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  min-height: 420px;
  box-shadow: var(--shadow);
}

.intro-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.intro-visual::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 40%;
  background: linear-gradient(transparent, rgba(15, 26, 40, 0.7));
  z-index: 1;
}

.intro-caption {
  position: absolute;
  left: 1.25rem;
  bottom: 1.25rem;
  z-index: 2;
  color: #fff;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

.value-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: grid;
  gap: 1.1rem;
}

.value-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.value-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.value-num {
  font-family: var(--font-display);
  color: var(--gold);
  font-size: 1.35rem;
  font-weight: 650;
  line-height: 1;
  padding-top: 0.15rem;
}

.value-list h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
  color: var(--navy);
}

.value-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Timeline */
.eras {
  background:
    linear-gradient(180deg, transparent, rgba(26, 45, 68, 0.04) 8%, rgba(26, 45, 68, 0.06) 50%, transparent);
}

.timeline {
  display: grid;
  gap: 0;
  position: relative;
  margin-top: 0.5rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(var(--gold), var(--crimson));
  opacity: 0.55;
}

.era {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 1.25rem;
  padding: 1.35rem 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.era.visible {
  opacity: 1;
  transform: none;
}

.era-dot {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--gold);
  margin-top: 0.2rem;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.15);
}

.era-body {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  backdrop-filter: blur(6px);
}

.era-year {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--crimson);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.era-body h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--navy);
}

.era-body p {
  margin: 0;
  color: var(--muted);
}

/* Photo strip */
.photo-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2.75rem;
}

.photo-strip figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--navy-deep);
}

.photo-strip img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.55s ease;
}

.photo-strip figure:hover img {
  transform: scale(1.05);
}

.photo-strip figcaption {
  padding: 0.65rem 0.85rem 0.85rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
}

@media (max-width: 700px) {
  .photo-strip {
    grid-template-columns: 1fr;
  }
  .photo-strip img {
    height: 180px;
  }
}

/* Institutions gallery */
.institutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.35rem;
}

.inst-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  min-height: 300px;
  isolation: isolate;
}

.inst-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.inst-card:hover img {
  transform: scale(1.06);
}

.inst-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 25%, rgba(15, 26, 40, 0.88) 100%);
  z-index: 1;
}

.inst-copy {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 1.4rem;
  color: #fff;
}

.inst-copy h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
}

.inst-copy p {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.82);
}

/* Heritage split */
.heritage {
  padding-bottom: 4rem;
}

.heritage-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: var(--navy-deep);
  color: #fff;
  min-height: 460px;
}

.heritage-media {
  position: relative;
  min-height: 320px;
}

.heritage-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.heritage-copy {
  padding: clamp(1.75rem, 4vw, 3rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.heritage-copy .section-label {
  color: var(--gold-soft);
}

.heritage-copy .section-title {
  color: #fff;
}

.heritage-copy p {
  color: rgba(255, 255, 255, 0.78);
  margin: 0 0 1.5rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 0.5rem;
}

.stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.65rem;
  color: var(--gold-soft);
  line-height: 1.1;
}

.stat span {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.04em;
}

/* CTA band */
.cta-band {
  padding: 0 0 5rem;
}

.cta-inner {
  background:
    linear-gradient(135deg, var(--navy) 0%, var(--navy-deep) 55%, #2a1830 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: clamp(2rem, 5vw, 3.25rem);
  display: grid;
  grid-template-columns: 1.4fr auto;
  gap: 1.5rem;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.cta-inner::before {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  right: -60px;
  top: -80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 39, 0.28), transparent 70%);
  pointer-events: none;
}

.cta-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  margin: 0 0 0.5rem;
  position: relative;
}

.cta-inner p {
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
  max-width: 46ch;
  position: relative;
}

.cta-inner .btn {
  position: relative;
  white-space: nowrap;
}

/* Footer */
.site-footer {
  background: var(--navy-deep);
  color: rgba(255, 255, 255, 0.88);
  padding: 4rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1.15fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-block h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 1rem;
  color: #fff;
}

.footer-block p,
.address-list {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.95rem;
}

.address-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 1.15rem;
}

.address-list strong {
  display: block;
  color: var(--gold-soft);
  font-weight: 600;
  margin-bottom: 0.2rem;
  font-size: 0.9rem;
}

.map-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  min-height: 240px;
  background: #0a121c;
}

.map-wrap iframe {
  width: 100%;
  height: 260px;
  border: 0;
  display: block;
  filter: grayscale(0.25) contrast(1.05);
}

.contact-form {
  display: grid;
  gap: 0.85rem;
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.7);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--gold);
  background: rgba(255, 255, 255, 0.1);
}

.contact-form textarea {
  min-height: 110px;
  resize: vertical;
}

.form-note {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
  margin: 0;
}

.form-success {
  display: none;
  padding: 1rem;
  border-radius: var(--radius);
  background: rgba(201, 162, 39, 0.15);
  border: 1px solid rgba(201, 162, 39, 0.4);
  color: var(--gold-soft);
  font-size: 0.95rem;
}

.form-success.show {
  display: block;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
}

/* Reveal helper */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 960px) {
  .intro-grid,
  .heritage-panel,
  .footer-grid,
  .institutions-grid {
    grid-template-columns: 1fr;
  }

  .cta-inner {
    grid-template-columns: 1fr;
  }

  .institutions-grid {
    grid-template-columns: 1fr;
  }

  @media (min-width: 640px) {
    .institutions-grid {
      grid-template-columns: 1fr 1fr;
    }
    .institutions-grid .inst-card:last-child {
      grid-column: span 2;
    }
  }
}

@media (max-width: 820px) {
  .nav-toggle {
    display: grid;
    place-items: center;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: rgba(15, 26, 40, 0.97);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.25rem 1.25rem;
    gap: 0.35rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
    border-bottom: 1px solid rgba(201, 162, 39, 0.2);
  }

  .nav.open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 0.75rem 0.5rem;
  }

  .nav-cta {
    text-align: center;
    margin-top: 0.35rem;
  }

  .stats {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }
}

@media (max-width: 560px) {
  .hero-content {
    padding-bottom: 3.5rem;
  }

  .intro-visual {
    min-height: 280px;
  }
}