:root {
  --bg: #ffffff;
  --fg: #061912;
  --primary: #004d2e;
  --accent: #b8954a;
  --surface: #f6f7f9;
  --muted: #7a8a80;
  --border: #061912;
  --max-width: 1200px;
  --font-display: 'Oswald', sans-serif;
  --font-body: 'Source Serif 4', serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
}

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

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

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--fg);
  color: var(--bg);
  padding: 8px 16px;
  z-index: 10000;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 0.05em;
}

.skip-link:focus {
  top: 0;
}

.container {
  width: 92%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 900;
  background: var(--primary);
  color: #ffffff;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-badge {
  width: 48px;
  height: 48px;
  background: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 6px;
}

.brand-badge img {
  width: 85%;
  height: 85%;
  object-fit: contain;
  transform: translateX(1px);
}

.brand-title {
  font-family: var(--font-display);
  font-size: 20px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.1;
  display: block;
  color: #ffffff;
}

.brand-sub {
  font-family: var(--font-body);
  font-size: 12px;
  color: rgba(255,255,255,0.65);
  display: block;
  line-height: 1.2;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 0.04em;
}

.nav-links a {
  position: relative;
  color: #ffffff;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s ease;
}

.nav-links a:hover::after,
.nav-links a:focus::after {
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 14px 24px;
  border: 2px solid var(--border);
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  transition: all 0.15s ease;
  line-height: 1;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--surface);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--fg);
  border-color: var(--fg);
  color: var(--bg);
}

.btn-light {
  background: var(--surface);
  border-color: var(--surface);
  color: var(--primary);
}

.btn-light:hover,
.btn-light:focus {
  background: transparent;
  color: var(--surface);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 28px;
  height: 3px;
  background: #ffffff;
  transition: 0.3s ease;
}

@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    inset: 74px 0 auto 0;
    background: var(--primary);
    border-bottom: 1px solid rgba(255,255,255,0.15);
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    gap: 16px;
    transform: translateY(-150%);
    transition: transform 0.3s ease;
  }

  .nav-links.open {
    transform: translateY(0);
  }

  .nav-toggle {
    display: flex;
  }
}

.kicker {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-transform: uppercase;
  line-height: 0.95;
  letter-spacing: -0.01em;
}

.convocatoria {
  padding: 80px 0 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}

.hero-kicker {
  grid-column: 1 / -1;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-kicker { order: -1; }
  .hero-visual { order: 0; }
  .hero-content { order: 1; }
}

.hero-title {
  font-size: clamp(3rem, 7vw, 6.5rem);
  margin-bottom: 24px;
}

.hero-title .line {
  display: block;
}

.hero-title .line-accent {
  color: var(--primary);
}

.hero-lead {
  font-size: 1.25rem;
  max-width: 52ch;
  margin-bottom: 32px;
  color: var(--fg);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 48px;
}

.hero-meta strong {
  display: block;
  font-size: 20px;
  color: var(--fg);
  margin-top: 4px;
}

.countdown-box {
  border: 2px solid var(--border);
  padding: 20px 24px;
  display: inline-flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 48px;
}

.countdown-label {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  max-width: 10ch;
  line-height: 1.3;
}

.countdown-grid {
  display: flex;
  gap: 16px;
}

.countdown-grid > div {
  text-align: center;
  min-width: 56px;
}

.countdown-grid span {
  font-family: var(--font-display);
  font-size: 32px;
  line-height: 1;
  display: block;
}

.countdown-grid em {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 11px;
  font-style: normal;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: clamp(1rem, 8vw, 7rem);
}

@media (max-width: 900px) {
  .hero-visual {
    margin-top: 0;
  }
}

.hero-visual img {
  width: 100%;
  object-fit: contain;
}

.prize-banner {
  background: var(--primary);
  color: var(--surface);
  padding: 48px 0;
  margin-top: 80px;
}

.prize-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.prize-banner h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  max-width: 18ch;
}

.prize-banner p {
  font-family: var(--font-body);
  font-size: 1.1rem;
  opacity: 0.85;
  max-width: 36ch;
}

.prize-list {
  list-style: none;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.prize-list li {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 0.04em;
  border: 2px solid rgba(255,255,255,0.25);
  padding: 12px 18px;
}

.prize-list strong {
  display: block;
  font-size: 22px;
  margin-bottom: 2px;
}

.categorias {
  padding: 80px 0;
}

.section-head {
  margin-bottom: 48px;
  max-width: 70ch;
}

.section-head h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 12px;
}

.section-head p {
  font-size: 1.15rem;
  color: var(--muted);
}

.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0;
  border: 2px solid var(--border);
}

.cat-card {
  padding: 32px;
  border-right: 2px solid var(--border);
  border-bottom: 2px solid var(--border);
  background: var(--surface);
  transition: background 0.15s ease, color 0.15s ease;
  position: relative;
}

.cat-card:nth-child(5n) {
  border-right: none;
}

@media (max-width: 1200px) {
  .cat-card:nth-child(5n) { border-right: 2px solid var(--border); }
  .cat-card:nth-child(3n) { border-right: none; }
}

@media (max-width: 768px) {
  .cat-card { border-right: none !important; }
}

.cat-card:hover,
.cat-card:focus-within {
  background: var(--primary);
  color: var(--surface);
}

.cat-num {
  font-family: var(--font-display);
  font-size: 48px;
  line-height: 1;
  opacity: 0.15;
  position: absolute;
  top: 16px;
  right: 20px;
}

.cat-card:hover .cat-num,
.cat-card:focus-within .cat-num {
  opacity: 0.25;
  color: var(--surface);
}

.cat-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  opacity: 0.9;
}

.cat-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  line-height: 1.2;
}

.cat-card p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  opacity: 0.8;
}

.participa {
  background: var(--primary);
  color: var(--surface);
  padding: 80px 0;
}

.participa .kicker {
  color: #8ecfb0;
}

.participa h2 {
  color: var(--surface);
}

.participa a {
  text-decoration: underline;
  text-decoration-color: rgba(255,255,255,0.4);
  text-underline-offset: 4px;
}

.participa a:hover,
.participa a:focus {
  text-decoration-color: var(--accent);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

@media (max-width: 900px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

.timeline {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.tl-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.tl-num {
  font-family: var(--font-display);
  font-size: 48px;
  line-height: 1;
  color: rgba(255,255,255,0.15);
  min-width: 64px;
  text-align: right;
}

.tl-body h3 {
  font-size: 20px;
  margin-bottom: 6px;
  color: var(--surface);
}

.tl-body p {
  font-family: var(--font-body);
  font-size: 16px;
  opacity: 0.85;
  line-height: 1.55;
}

.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 0;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 16px;
  letter-spacing: 0.02em;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary .faq-icon {
  font-family: var(--font-body);
  font-size: 24px;
  line-height: 1;
  transition: transform 0.2s ease;
}

.faq-item[open] summary .faq-icon {
  transform: rotate(45deg);
}

.faq-body {
  padding-bottom: 20px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  opacity: 0.85;
  max-width: 65ch;
}

.contact-block {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 2px solid rgba(255,255,255,0.15);
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
  align-items: center;
}

.contact-block p {
  font-family: var(--font-body);
  font-size: 16px;
  opacity: 0.9;
  max-width: 50ch;
}

.footer {
  background: var(--fg);
  color: var(--bg);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer h4 {
  font-size: 14px;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  opacity: 0.6;
}

.footer a:hover,
.footer a:focus {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.foot-brand .brand-title {
  color: var(--surface);
}

.foot-slogan {
  font-family: var(--font-body);
  font-style: italic;
  margin-top: 12px;
  opacity: 0.7;
  font-size: 16px;
}

.contact-list,
.foot-info {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 15px;
}

.contact-list li,
.foot-info li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.contact-list svg {
  flex-shrink: 0;
  margin-top: 3px;
  opacity: 0.7;
}

.foot-info-label {
  opacity: 0.5;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 2px;
}

.foot-info-value {
  display: block;
}

.foot-badge {
  display: inline-flex !important;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.1);
  padding: 4px 10px;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.foot-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  opacity: 0.6;
}

.legal {
  list-style: none;
  display: flex;
  gap: 20px;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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