:root {
  --color-orange: #ff5c00;
  --color-charcoal: #2b2b2b;
  --color-white: #ffffff;
  --color-slate: #f2f2f2;
  --color-text: #101010;
  --color-success: #ff5c00;
  --color-error: #ff8a80;
}

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

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--color-white);
  background: var(--color-charcoal);
  min-height: 100vh;
}

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

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

.top-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 6vw;
  background: rgba(43, 43, 43, 0.92);
  backdrop-filter: blur(10px);
}

.brand-logo {
  height: 48px;
  width: auto;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: transparent;
  color: var(--color-white);
  font: inherit;
  line-height: 1;
  height: 36px;
  padding: 0 0.95rem;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.3s ease, color 0.3s ease;
}

.lang-switch:hover {
  border-color: var(--color-orange);
  color: var(--color-orange);
}

.nav-contact {
  display: inline-flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  padding: 0 0 0.2rem;
  height: 36px;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.nav-contact:hover {
  color: var(--color-orange);
  border-color: var(--color-orange);
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
  padding: 8rem 6vw 6rem;
  gap: 3rem;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 20% 20%,
    rgba(255, 92, 0, 0.32),
    transparent 55%
  );
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 540px;
}

.hero-accent {
  position: relative;
  z-index: 1;
  justify-self: center;
  max-width: 420px;
}

.hero-accent img {
  border-radius: 32px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

.eyebrow {
  font-family: "Poppins", sans-serif;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1rem;
}

h1,
h2,
h3 {
  font-family: "Poppins", sans-serif;
  margin: 0;
}

h1 {
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  line-height: 1.05;
}

.lead {
  margin: 1.5rem 0 2.5rem;
  font-size: 1.1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.8rem;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 0.25s ease, box-shadow 0.25s ease,
    background 0.25s ease, color 0.25s ease;
}

.button.primary {
  background: var(--color-orange);
  color: var(--color-white);
  box-shadow: 0 12px 30px rgba(255, 92, 0, 0.35);
}

.button.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 45px rgba(255, 92, 0, 0.45);
}

.button.ghost {
  border: 1px solid rgba(255, 255, 255, 0.65);
  color: var(--color-white);
  background: transparent;
}

.button.ghost:hover {
  border-color: var(--color-orange);
  color: var(--color-orange);
}

.section-heading {
  margin-bottom: 2.5rem;
}

.section-heading.light h2 {
  color: var(--color-white);
}

.section-eyebrow {
  display: inline-block;
  font-family: "Poppins", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--color-orange);
  margin-bottom: 0.9rem;
}

.about {
  background: var(--color-white);
  color: var(--color-text);
  border-top-left-radius: 56px;
  border-top-right-radius: 56px;
  padding: 6rem 6vw;
  position: relative;
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 3rem;
}

.about-text {
  font-size: 1.1rem;
  line-height: 1.9;
  color: rgba(16, 16, 16, 0.84);
}

.about-highlights {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  font-weight: 600;
}

.about-highlights li {
  padding-left: 1.5rem;
  position: relative;
}

.about-highlights li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--color-orange);
}

.organizers {
  padding: 6rem 6vw;
  background: var(--color-charcoal);
}

.organizer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.organizer-card {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  padding: 2.2rem;
  background: rgba(43, 43, 43, 0.75);
  transition: transform 0.3s ease, box-shadow 0.3s ease,
    border-color 0.3s ease;
}

.organizer-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 92, 0, 0.35);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35);
}

.organizer-card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.organizer-card p {
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.7;
}

.card-link {
  display: inline-flex;
  margin-top: 1.8rem;
  color: var(--color-orange);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.contact {
  padding: 6rem 6vw 5rem;
  background: linear-gradient(
    180deg,
    rgba(43, 43, 43, 1) 0%,
    rgba(16, 16, 16, 1) 100%
  );
}

.contact-inner {
  max-width: 860px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 36px;
  padding: 3.5rem;
  backdrop-filter: blur(16px);
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.8rem;
  margin-top: 2.5rem;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea {
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(0, 0, 0, 0.2);
  color: var(--color-white);
  font: inherit;
  border-radius: 14px;
  padding: 0.85rem 1rem;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-orange);
  background: rgba(0, 0, 0, 0.35);
}

.contact-form textarea {
  resize: vertical;
}

.contact-form .full {
  grid-column: 1 / -1;
}

.newsletter {
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.newsletter input {
  width: auto;
  margin: 0;
}

.button.full {
  width: 100%;
}

.contact-form button[disabled] {
  opacity: 0.6;
  cursor: wait;
}

.form-status {
  grid-column: 1 / -1;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.3s ease;
}

.form-status.is-success {
  color: var(--color-success);
}

.form-status.is-error {
  color: var(--color-error);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  padding: 3rem 6vw 4rem;
  background: var(--color-white);
  color: var(--color-charcoal);
}

.footer-brand img {
  height: 42px;
}

.footer-link {
  color: var(--color-orange);
  font-weight: 600;
  letter-spacing: 0.01em;
}

@media (max-width: 720px) {
  .top-nav {
    padding: 1.2rem 6vw;
  }

  .nav-actions {
    gap: 1rem;
    font-size: 0.8rem;
  }

  .hero {
    padding-top: 6.5rem;
  }

  .about {
    border-radius: 32px 32px 0 0;
  }

  .about-layout {
    grid-template-columns: 1fr;
  }

  .contact-inner {
    padding: 2.5rem;
  }
}