:root {
  --bg: #ffffff;
  --text: #1b1b1b;
  --muted: #666666;
  --surface: #ffffff;
  --surface-muted: #f2f2f2;
  --surface-dark: #666666;
  --surface-darker: #000000;
  --border: #d8d8d8;
  --accent: #7f1ecb;
  --accent-dark: #5f14a3;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  --radius: 18px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

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

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.narrow {
  max-width: 820px;
}

.center-text {
  text-align: center;
}

.top-space {
  margin-top: 4rem;
}

.section {
  padding: 5rem 0;
}

.section-muted {
  background: var(--surface-muted);
}

.section-dark {
  background: #666666;
}

.section-light {
  background: #f5f5f5;
}

.section-heading {
  margin-bottom: 2rem;
}

.section-heading h2,
.announcement-band h1,
.site-footer h2 {
  margin: 0 0 0.5rem;
  line-height: 1.2;
}

.section-heading p,
.lead {
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.96);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
}

.navbar {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  padding: 0.75rem 1rem;
  background: var(--accent);
  border-radius: 999px;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.nav-links > a,
.nav-dropdown-toggle,
.icon-button {
  border: 0;
  background: transparent;
  color: #ffffff;
  padding: 0.75rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
}

.nav-links > a:hover,
.nav-dropdown-toggle:hover,
.icon-button:hover,
.mobile-links a:hover {
  background: rgba(255, 255, 255, 0.12);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  min-width: 220px;
  background: #ffffff;
  color: var(--text);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 0.5rem;
  display: none;
}

.nav-dropdown:hover .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu a {
  display: block;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
}

.nav-dropdown-menu a:hover {
  background: #f3f3f3;
}

.mobile-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: #ffffff;
  font-size: 1.25rem;
  padding: 0.5rem;
}

.mobile-menu {
  display: none;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.mobile-menu.is-open {
  display: block;
}

.mobile-links {
  display: grid;
  gap: 0.5rem;
  padding: 1rem 0 1.25rem;
}

.mobile-links a {
  padding: 0.8rem 0.9rem;
  border-radius: 12px;
}

.hero img {
  width: 100%;
  min-height: 250px;
  max-height: 500px;
  object-fit: cover;
}

.announcement-band {
  background: #333333;
  color: #ffffff;
  padding: 4.5rem 0;
}

.announcement-band p,
.announcement-band .lead {
  color: rgba(255, 255, 255, 0.88);
}

.people-grid,
.card-grid,
.pricing-grid,
.product-grid {
  display: grid;
  gap: 1.5rem;
}

.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.four-col {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.person-card,
.info-card,
.price-card,
.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.person-card,
.product-card {
  padding: 1.5rem;
  text-align: center;
}

.person-card img {
  width: 180px;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 50%;
  margin: 0 auto 1rem;
}

.sponsor-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sponsor-card img {
  width: 170px;
  height: 170px;
}

.info-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-body {
  padding: 1.5rem;
  background: #ffffff;
}

.schedule-card .card-body {
  max-height: 560px;
  overflow: auto;
}

.simple-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.simple-list li {
  padding: 0.85rem 0;
  border-bottom: 1px solid #ececec;
}

.simple-list li:last-child {
  border-bottom: 0;
}

.compact-list li {
  padding: 0.55rem 0;
}

.compact-list a:hover {
  color: var(--accent-dark);
}

.price-card {
  display: flex;
  flex-direction: column;
}

.price-card header {
  background: #666666;
  color: #ffffff;
  padding: 1.25rem 1.5rem;
  text-align: center;
}

.price-card .simple-list {
  padding: 0 1.5rem;
  flex: 1;
}

.price-total {
  margin: 0;
  padding: 1rem 1.5rem 0;
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  border: 0;
  border-radius: 999px;
  background: #009688;
  color: #ffffff;
  padding: 0.85rem 1.25rem;
  font-weight: 700;
  cursor: pointer;
  margin: 1.25rem 1.5rem 1.5rem;
}

.button:hover {
  filter: brightness(0.94);
}

.button-dark {
  background: #000000;
}

.product-card img {
  width: 100%;
  height: 230px;
  object-fit: contain;
  margin: 1rem 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 2rem;
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.contact-form label {
  display: grid;
  gap: 0.5rem;
}

.contact-form span {
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid #bcbcbc;
  border-radius: 14px;
  padding: 0.9rem 1rem;
  background: #ffffff;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(127, 30, 203, 0.2);
  border-color: var(--accent);
}

.form-status {
  min-height: 1.5rem;
  margin: 0;
  color: var(--muted);
}

.site-footer {
  background: #000000;
  color: #ffffff;
  padding: 3rem 0;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin: 1rem 0 1.25rem;
}

.social-button,
.back-to-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.social-button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
}

.back-to-top {
  margin-top: 1rem;
  color: #ffffff;
}

.overlay-panel {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: none;
  z-index: 100;
}

.overlay-panel.is-open {
  display: block;
}

.schedule-drawer {
  margin-left: auto;
  width: min(90vw, 360px);
  min-height: 100%;
  background: #ffffff;
  padding: 1.5rem;
  box-shadow: -8px 0 30px rgba(0, 0, 0, 0.2);
}

.drawer-close {
  border: 0;
  background: transparent;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--accent);
  margin-left: auto;
  display: block;
}

.schedule-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.schedule-list li {
  padding: 0.85rem 0;
  border-bottom: 1px solid #ececec;
}

@media (max-width: 1024px) {
  .three-col,
  .four-col,
  .sponsor-grid,
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .desktop-nav {
    display: none;
  }

  .mobile-toggle {
    display: inline-flex;
  }

  .two-col,
  .three-col,
  .four-col,
  .sponsor-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 4rem 0;
  }

  .person-card img,
  .sponsor-card img {
    width: 150px;
    height: 150px;
  }
}


.form-grid {
  display: grid;
  gap: 1rem;
}

.form-grid.two-up {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.form-card h3 {
  margin-top: 0;
  margin-bottom: 1rem;
}

.registration-form {
  gap: 1.25rem;
}

.contact-form select,
.registration-form select {
  width: 100%;
  border: 1px solid #bcbcbc;
  border-radius: 14px;
  padding: 0.9rem 1rem;
  background: #ffffff;
}

.contact-form select:focus,
.registration-form select:focus {
  outline: 2px solid rgba(127, 30, 203, 0.2);
  border-color: var(--accent);
}

.full-width {
  grid-column: 1 / -1;
}

.form-actions {
  display: grid;
  justify-items: start;
}

@media (max-width: 820px) {
  .form-grid.two-up {
    grid-template-columns: 1fr;
  }
}