:root {
  --primary: #d99200;
  --primary-dark: #8a5900;
  --primary-soft: #fff1cf;
  --navy: #101b35;
  --navy-soft: #263653;
  --muted: #59677d;
  --paper: #ffffff;
  --ivory: #fffaf0;
  --surface: #f7f8fa;
  --border: #dce2ea;
  --shadow-sm: 0 8px 24px rgba(16, 27, 53, 0.07);
  --shadow-lg: 0 24px 60px rgba(16, 27, 53, 0.14);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--navy);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
a {
  font: inherit;
}

a,
button {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #2356a8;
  outline-offset: 4px;
}

h1,
h2,
h3,
p,
figure {
  margin-top: 0;
}

.container {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.container-wide {
  width: min(1320px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 20;
  min-height: 82px;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(220, 226, 234, 0.8);
}

.navigation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
  text-decoration: none;
}

.brand-icon {
  width: 48px;
  flex: 0 0 auto;
  fill: var(--primary);
  stroke: var(--primary);
  stroke-width: 3;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.brand small {
  margin-top: 5px;
  color: var(--navy-soft);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-link {
  position: relative;
  padding: 29px 2px 25px;
  color: var(--navy-soft);
  font-size: 0.88rem;
  font-weight: 750;
  text-decoration: none;
}

.nav-link::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 15px;
  left: 0;
  height: 3px;
  border-radius: 999px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    radial-gradient(circle at 77% 38%, rgba(217, 146, 0, 0.14), transparent 33%),
    linear-gradient(112deg, #fffdfa 0%, #fff8e9 57%, #f8e1a8 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: 0.32;
  background-image: radial-gradient(rgba(16, 27, 53, 0.22) 0.7px, transparent 0.7px);
  background-size: 22px 22px;
  mask-image: linear-gradient(90deg, transparent 22%, #000 100%);
}

.hero-decoration {
  position: absolute;
  z-index: -1;
  width: 76px;
  height: 760px;
  background: linear-gradient(180deg, #ffc234, #d98b00);
  transform: rotate(24deg);
  opacity: 0.9;
}

.hero-decoration-left {
  top: -190px;
  left: -62px;
}

.hero-decoration-right {
  right: 5%;
  bottom: -510px;
  opacity: 0.42;
}

.hero-layout {
  min-height: 540px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: center;
  gap: clamp(35px, 6vw, 78px);
  padding-block: 52px;
}

.eyebrow,
.section-kicker {
  margin-bottom: 13px;
  color: var(--primary-dark);
  font-size: 0.69rem;
  font-weight: 850;
  letter-spacing: 0.2em;
}

.hero h1 {
  margin-bottom: 7px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3rem, 5vw, 4.85rem);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.hero h1 span {
  color: var(--primary);
}

.student-name {
  margin-bottom: 25px;
  color: var(--navy-soft);
  font-size: clamp(1.32rem, 2.2vw, 1.85rem);
  font-weight: 450;
}

.course-info {
  display: grid;
  gap: 13px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.course-info li {
  display: grid;
  grid-template-columns: 25px 1fr;
  align-items: center;
  gap: 12px;
  color: #263650;
  font-size: 0.94rem;
  line-height: 1.35;
}

.info-icon {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  color: var(--navy);
  font-size: 1.25rem;
  font-weight: 850;
}

.accent-line {
  width: 68px;
  height: 5px;
  margin: 27px 0 14px;
  border-radius: 999px;
  background: var(--primary);
}

.hero-quote {
  margin: 0;
  color: #667187;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.88rem;
  font-style: italic;
}

.presentation-card {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin: 0;
  border: 8px solid rgba(255, 255, 255, 0.94);
  border-radius: 20px;
  background: var(--navy);
  box-shadow: var(--shadow-lg);
}

.presentation-card > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.presentation-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16, 27, 53, 0.04) 28%, rgba(16, 27, 53, 0.86) 100%);
}

.presentation-card figcaption {
  position: absolute;
  right: 28px;
  bottom: 24px;
  left: 28px;
  color: white;
}

.media-kicker,
.media-title,
.media-status {
  display: block;
}

.media-kicker {
  margin-bottom: 7px;
  color: #ffe19b;
  font-size: 0.66rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.media-title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 750;
}

.media-status {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.76rem;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 76px;
  height: 76px;
  display: grid;
  place-items: center;
  border: 2px solid white;
  border-radius: 50%;
  background: rgba(217, 146, 0, 0.94);
  box-shadow: 0 12px 30px rgba(16, 27, 53, 0.28);
  transform: translate(-50%, -50%);
}

.play-button svg {
  width: 42px;
  fill: white;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 34px;
  margin-bottom: 25px;
}

.section-heading h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  letter-spacing: -0.045em;
}

.contents {
  padding-block: 58px 72px;
}

.section-intro {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.week-card {
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(165px, 0.7fr) 1.3fr;
  min-height: 240px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: white;
  box-shadow: 0 7px 24px rgba(16, 27, 53, 0.06);
  transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.week-card:hover {
  border-color: #e7bd64;
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.week-image {
  display: block;
  overflow: hidden;
  background: #e8ebf0;
}

.week-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 450ms ease;
}

.week-card:hover .week-image img {
  transform: scale(1.045);
}

.week-card-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 25px;
}

.week-number {
  margin-bottom: 8px;
  color: var(--primary-dark);
  font-size: 0.73rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.week-card h3 {
  margin-bottom: 9px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.2rem;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.week-card-body > p:not(.week-number) {
  margin-bottom: 17px;
  color: var(--muted);
  font-size: 0.83rem;
  line-height: 1.48;
}

.content-link {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: auto;
  padding: 9px 15px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 0.76rem;
  font-weight: 850;
  text-decoration: none;
  transition: background 180ms ease, transform 180ms ease;
}

.content-link:hover {
  background: #ffe3a1;
  transform: translateX(3px);
}

.site-footer {
  padding-block: 24px;
  border-top: 1px solid #e8ecf1;
  background: #f8f9fb;
  color: #67748a;
  font-size: 0.78rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.footer-content strong {
  color: var(--navy);
}

/* Páginas semanales */
.week-page {
  background: #fbfbfc;
}

.week-page .site-header {
  background: white;
}

.week-main {
  padding-block: 34px 64px;
}

.breadcrumb {
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 0.82rem;
}

.breadcrumb a {
  color: var(--primary-dark);
  font-weight: 700;
  text-decoration: none;
}

.week-hero {
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 0.78fr;
  align-items: stretch;
  min-height: 340px;
  margin-bottom: 34px;
  border: 1px solid #ead8a9;
  border-radius: 22px;
  background: linear-gradient(120deg, #fffdf8, #fff1ca);
  box-shadow: var(--shadow-sm);
}

.week-hero-copy {
  align-self: center;
  padding: clamp(30px, 5vw, 58px);
}

.week-label {
  margin-bottom: 12px;
  color: var(--primary-dark);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.18em;
}

.week-hero h1 {
  margin-bottom: 14px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.25rem, 4.5vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
}

.week-hero-copy > p:last-child {
  max-width: 650px;
  margin-bottom: 0;
  color: #45536a;
  font-size: 0.98rem;
  line-height: 1.55;
}

.week-hero-media {
  min-height: 310px;
  margin: 0;
  background: #dde2e8;
}

.week-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.week-section {
  margin-top: 30px;
}

.section-title {
  margin-bottom: 14px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.55rem;
  letter-spacing: -0.025em;
}

.research-card,
.antecedent-card,
.relationship-section,
.reference-section {
  padding: 27px;
  border: 1px solid var(--border);
  border-radius: 15px;
  background: white;
  box-shadow: var(--shadow-sm);
}

.demo-badge {
  display: inline-block;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.research-card h3 {
  margin: 15px 0 14px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.4rem;
}

.research-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  color: var(--muted);
  font-size: 0.85rem;
}

.research-meta b {
  display: block;
  margin-bottom: 4px;
  color: var(--navy);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.antecedent-card p,
.relationship-section p,
.reference-section p {
  color: #445168;
  font-size: 0.96rem;
  line-height: 1.7;
}

.provisional-note {
  margin-top: 18px;
  padding: 12px 15px;
  border-left: 4px solid var(--primary);
  border-radius: 5px;
  background: #fff7e5;
  color: #694814;
  font-size: 0.83rem;
}

.reference-small {
  margin-top: 15px;
  font-size: 0.79rem !important;
}

.week-navigation {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  margin-top: 36px;
}

.week-navigation a {
  padding: 11px 17px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 0.82rem;
  font-weight: 850;
  text-decoration: none;
}

.week-navigation a:only-child:last-child {
  margin-left: auto;
}

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
}

.js .reveal.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 500ms ease, transform 500ms ease;
}

@media (max-width: 980px) {
  .hero-layout {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 34px;
  }

  .course-info li {
    font-size: 0.86rem;
  }

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

  .week-card {
    grid-template-columns: 0.65fr 1.35fr;
  }

}

@media (max-width: 760px) {
  .container,
  .container-wide {
    width: min(100% - 32px, 620px);
  }

  .site-header {
    min-height: 72px;
  }

  .brand-icon {
    width: 38px;
  }

  .brand strong {
    font-size: 0.96rem;
  }

  .brand small {
    font-size: 0.5rem;
    letter-spacing: 0.14em;
  }

  .nav-links {
    gap: 13px;
  }

  .nav-link {
    padding: 25px 1px 21px;
    font-size: 0.76rem;
  }

  .nav-link::after {
    bottom: 13px;
  }

  .hero-layout {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 34px;
    padding-block: 44px;
  }

  .hero-info {
    max-width: 560px;
  }

  .presentation-card {
    border-width: 6px;
  }

  .section-heading {
    display: block;
  }

  .section-intro {
    margin-top: 17px;
  }

  .week-hero {
    grid-template-columns: 1fr;
  }

  .week-hero-media {
    min-height: 240px;
    order: -1;
  }
}

@media (max-width: 540px) {
  .navigation {
    gap: 12px;
  }

  .brand small {
    display: none;
  }

  .nav-links {
    gap: 10px;
  }

  .nav-link {
    font-size: 0.7rem;
  }

  .hero h1 {
    font-size: clamp(2.65rem, 14vw, 3.5rem);
  }

  .presentation-card figcaption {
    right: 17px;
    bottom: 15px;
    left: 17px;
  }

  .play-button {
    width: 58px;
    height: 58px;
  }

  .media-status {
    display: none;
  }

  .week-card {
    grid-template-columns: 1fr;
  }

  .week-image {
    aspect-ratio: 16 / 8.5;
  }

  .footer-content {
    flex-direction: column;
    gap: 7px;
  }

  .research-meta {
    grid-template-columns: 1fr;
  }

  .week-navigation {
    flex-direction: column;
  }

  .week-navigation a:only-child:last-child {
    margin-left: 0;
    text-align: right;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}