:root {
  --bg: #f6f2ff;
  --text: #0f1723;
  --muted: #454b55;
  --accent1: #7498e0;
  --accent2: #00d4ff;
  --container: 1100px;
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  letter-spacing: -1px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(6px);
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.8),
    rgba(255, 255, 255, 0.6)
  );
  border-bottom: 1px solid rgba(15, 23, 35, 0.04);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}
.brand {
  display: flex;
  flex-direction: row;
  align-items: center;
  text-decoration: none;
  padding-left: 20px;
}
.logo {
  font-family: "JetBrains Mono", monospace;
  background-color: #7498e0;
  color: white;
  font-weight: bold;
  font-size: 24px;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.logo__title {
  font-weight: 900;
  letter-spacing: 0.4px;
  color: var(--text);
  text-decoration: none;
  padding-left: 20px;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-right: 20px;
}

.header__list {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__item {
  display: flex;
  align-items: center;
}

.header__link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 400;
}

.burger {
  display: none;
  font-size: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  padding-right: 20px;
}

.btn {
  font-weight: 200;
  border: 0;
  padding: 10px 16px;
  border-radius: 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  color: white;
  box-shadow: 0 8px 28px rgba(124, 92, 255, 0.15);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  font-size: 15px;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 40px rgba(124, 92, 255, 0.12);
}

@media (max-width: 900px) {
  .header__nav {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    position: absolute;
    top: 60px;
    right: 1rem;
    width: 220px;
    background: rgba(255, 255, 255, 0.95);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 1000;
  }

  .header__nav.open {
    display: flex;
  }

  .header__list {
    flex-direction: column;
    gap: 1rem;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .header__item {
    width: 100%;
  }

  .header__link {
    display: block;
    width: 100%;
    text-align: left;
    color: var(--accent1);
  }

  .header__nav .button {
    display: inline-flex;
    width: auto;
    margin-left: 0;
  }

  .burger {
    display: block;
  }
}

.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 4rem 2rem;
  min-height: 85vh;
  text-align: center;
}
.hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#vanta-hero {
  position: relative;
  overflow: hidden;
}

#vanta-hero .container {
  position: relative;
  z-index: 1;
}

.hero__text {
  color: #aab8c9;
  font-weight: 300;
  margin-bottom: 40px;
}
@media (max-width: 700px) {
  .hero__text {
    font-weight: 200;
    font-size: 13px;
  }
}
.hero__title {
  font-family: "JetBrains Mono", monospace;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.015em;
  transform: scaleY(1.25);
  margin-bottom: 30px;
  text-align: center;
}
.line__title {
  display: block;
  font-size: 2rem;
  color: #7498e0;
  margin-bottom: 20px;
}
.line__subtitle {
  font-weight: 700;
  font-size: 5.5rem;
  letter-spacing: 0.03em;
  margin-top: 0.5rem;
  color: #7498e0;
}

@media (max-width: 1070px) {
  .line__subtitle {
    font-size: 4.5rem;
  }
}
@media (max-width: 880px) {
  .line__subtitle {
    font-size: 3.5rem;
  }
}
@media (max-width: 700px) {
  .line__title {
    font-size: 1.5rem;
  }
  .line__subtitle {
    font-size: 2.5rem;
  }
}
@media (max-width: 520px) {
  .line__title {
    font-size: 0.75rem;
  }
  .line__subtitle {
    font-size: 1.85rem;
  }
}
.hero__button {
  display: flex;
  justify-content: center;
  gap: clamp(35px, 20vw, 200px);
  margin-top: 70px;
}
.btn__link {
  text-decoration: none;
}

.section {
  padding: 56px 0;
  border-top: 1px solid rgba(15, 23, 35, 0.2);
}
.section h2 {
  font-family: "JetBrains Mono";
  font-weight: 600;
  font-size: 40px;
  margin: 0 0 18px;
  text-align: center;
  color: #2e1f68;
}
.details,
.program-list,
.learn-list {
  display: flex;
  align-items: center;
  flex-direction: column;
  padding: 0;
}
.details li,
.program-list li,
.learn-list li {
  margin: 15px 0;
  color: var(--muted);
  list-style: none;
}
@media (max-width: 680px) {
}
.cont__content {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.content__title {
  text-align: center;
  margin-bottom: 2rem;
}
.content {
  display: flex;
  gap: 8rem;
  align-items: flex-start;
  justify-content: center;
}
@media (max-width: 768px) {
  .content {
    gap: 1rem;
  }
}
@media (max-width: 680px) {
  .content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}
.content__img {
  width: 300px;
  height: auto;
  max-width: 100%;
}
.cont__speakers {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.speaker__card {
  width: 300px;
  background: linear-gradient(135deg, #e6e1ff 0%, #e0f7ff 100%);
  border: 1px solid #d8d8f0;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  font-family: "Arial", sans-serif;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.speaker__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}
.speaker__photo {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #ffffff;
  margin: 0 auto 20px;
  display: block;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.speaker__info {
  text-align: center;
  color: #333;
}
.speaker__name {
  font-size: 1.4em;
  font-weight: bold;
  margin: 0;
  color: #7498e0;
}

.speaker__position {
  font-size: 1em;
  color: #7a7a9e;
  margin-bottom: 10px;
}

.speaker__description {
  line-height: 1.4;
  color: var(--muted);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: all 0.6s cubic-bezier(0.2, 0.9, 0.2, 1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.footer {
  padding: 28px 0;
  color: var(--muted);
  font-size: 14px;
  border-top: 1px solid rgba(15, 23, 35, 0.03);
}
.footer_container {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.svg__icon {
  display: flex;
  align-items: center;
  gap: 5px;
}
/* Modal */
.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 80;
}
.modal[aria-hidden="false"] {
  display: flex;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 12, 16, 0.28);
  backdrop-filter: blur(4px);
}
.modal-panel {
  position: relative;
  background: white;
  padding: 28px;
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(15, 23, 35, 0.12);
  width: min(92%, 540px);
  z-index: 1;
}
.modal-close {
  position: absolute;
  right: 14px;
  top: 12px;
  border: 0;
  background: transparent;
  font-size: 18px;
  cursor: pointer;
}
.modal-panel label {
  display: block;
  margin: 12px 0;
  font-weight: 500;
  color: var(--muted);
}
.modal-panel input {
  width: 100%;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(15, 23, 35, 0.06);
  margin-top: 6px;
}
.thanks {
  padding: 12px;
}