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

:root {
  --croatia-blue: #002d72;
  --croatia-red: #c41e3a;
  --croatia-cream: #f8f6f2;
  --croatia-sand: #e8e4dc;
  --ink: #111;
  --ink-soft: #4a4a4a;
  --panel: #fff;
  --line: #d8d2c9;
}

html {
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--croatia-cream);
  line-height: 1.55;
}

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

a {
  color: var(--croatia-blue);
  text-decoration: none;
}

a:hover {
  color: var(--croatia-red);
}

.hero,
.content {
  max-width: 48rem;
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.hero {
  padding-top: 3rem;
  padding-bottom: 1.5rem;
}

.hero::before {
  content: "";
  display: block;
  width: 3.25rem;
  height: 3px;
  background: var(--croatia-red);
  margin-bottom: 1rem;
}

.hero h1 {
  margin: 0 0 0.2rem;
  margin-left: -0.12em;
  font-size: 2.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  line-height: 1.1;
}

.subtitle {
  margin: 0.15rem 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.085em;
  text-transform: uppercase;
}

.hero-image {
  margin: 0;
  border-top: 2px solid var(--croatia-red);
}

.hero-image img {
  display: block;
  width: 100%;
  max-height: 62vh;
  min-height: 300px;
  object-fit: cover;
  object-position: center 14%;
  border-bottom: 2px solid var(--croatia-blue);
}

.photo-credit {
  max-width: 48rem;
  margin: 0 auto;
  padding: 0.45rem 1.5rem 0.7rem;
  display: grid;
  gap: 0.18rem;
  background: transparent;
  opacity: 0.82;
}

.photo-credit-label {
  font-size: 0.54rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.photo-credit-text {
  font-size: 0.68rem;
  line-height: 1.4;
  color: var(--ink-soft);
}

.photo-credit-text a {
  font-weight: 600;
}

.content {
  padding-top: 0.4rem;
  padding-bottom: 3rem;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin: 1.8rem 0 2.4rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.main-nav a {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.main-nav a.active,
.main-nav a:hover {
  color: var(--ink);
}

.section {
  display: none;
  margin-bottom: 3rem;
}

.section.active {
  display: block;
}

h2 {
  margin: 0 0 1rem;
  padding-bottom: 0.45rem;
  border-bottom: 2px solid var(--croatia-red);
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

h3 {
  margin: 0 0 0.7rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--croatia-red);
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

p {
  margin: 0 0 1rem;
}

.lead {
  max-width: 44rem;
  margin-bottom: 1.4rem;
  color: #303030;
  font-size: 1.02rem;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.info-card {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1rem 1rem 0.9rem;
}

.info-card p {
  margin: 0;
  color: #2f2f2f;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1.05rem 1rem;
  margin-bottom: 1rem;
}

ul {
  margin: 0;
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.55rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  padding: 0.55rem 0.45rem;
  border-bottom: 1px solid var(--croatia-sand);
}

th {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.register-form {
  display: grid;
  gap: 0.42rem;
  max-width: 38rem;
}

.register-form label {
  margin-top: 0.75rem;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.register-form label:first-of-type {
  margin-top: 0;
}

.register-form input,
.register-form select,
.register-form textarea {
  width: 100%;
  padding: 0.62rem 0.72rem;
  font: inherit;
  font-size: 0.96rem;
  color: var(--ink);
  border: 1.5px solid #bcb6ac;
  background: #fff;
}

.register-form textarea {
  resize: vertical;
}

.register-form input:focus,
.register-form select:focus,
.register-form textarea:focus {
  outline: none;
  border-color: var(--croatia-blue);
}

.register-form button {
  margin-top: 1rem;
  justify-self: start;
  padding: 0.62rem 1.2rem;
  border: none;
  font: inherit;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #fff;
  background: var(--croatia-red);
  cursor: pointer;
}

.register-form button:hover {
  background: var(--croatia-blue);
}

.sponsor-list {
  list-style: none;
  padding-left: 0;
}

.sponsor-list li {
  margin-bottom: 0;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--croatia-sand);
  font-weight: 600;
}

.sponsor-list li:last-child {
  border-bottom: none;
}

footer {
  margin-top: 3rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  font-size: 0.72rem;
  color: var(--ink-soft);
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

@media (max-width: 720px) {
  .hero,
  .content {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .hero h1 {
    font-size: 1.95rem;
  }

  .subtitle {
    letter-spacing: 0.06em;
  }

  .hero-image figcaption {
    padding-left: 1rem;
    padding-right: 1rem;
  }

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