:root {
  --bg-dark: #081a4f;
  --bg-light: #f3f7ff;
  --accent: #ffd24d;
  --text-light: #ffffff;
  --text-dark: #11214d;
  --surface: #132b6f;
  --soft: #edf2ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #eaf1ff 0%, #f3f7ff 45%, #f8fbff 100%);
  color: var(--text-dark);
  min-height: 100vh;
}

.page-shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 20px 20px 36px;
}

.hero-panel {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.16), transparent 36%),
    linear-gradient(180deg, #0b255f 0%, #081a4f 100%);
  color: var(--text-light);
  padding: 48px 32px 52px;
  box-shadow: 0 30px 80px rgba(4, 18, 74, 0.18);
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("images/iift.jpeg") center/cover no-repeat;
  opacity: 0.18;
  filter: brightness(1.05) saturate(0.85);
  transform: scale(1.03);
  z-index: 0;
  pointer-events: none;
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.12), transparent 28%);
  pointer-events: none;
  z-index: 1;
}

.hero-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  position: relative;
  z-index: 1;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  width: 72px;
  height: 72px;
  object-fit: contain;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.12);
  padding: 10px;
}

.brand-subtitle,
.brand-caption {
  margin: 0;
  line-height: 1.25;
}

.brand-subtitle {
  font-size: 1rem;
  font-weight: 700;
}

.brand-caption {
  font-size: 0.92rem;
  opacity: 0.78;
}

.badge-group {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.badge-image,
.partner-logos img,
.conference-badge {
  display: inline-block;
  max-height: 52px;
  object-fit: contain;
}

.badge-image {
  background: rgba(255, 255, 255, 0.08);
  padding: 8px 12px;
  border-radius: 18px;
}

.hero-content {
  margin-top: 50px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-intro {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
}

.hero-content h1 {
  margin: 24px auto 16px;
  max-width: 760px;
  font-size: clamp(3rem, 5vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 800;
  text-shadow: 0 14px 32px rgba(0, 0, 0, 0.24);
}

.hero-dates,
.hero-session {
  margin: 0;
}

.hero-dates {
  margin-top: 16px;
  font-size: clamp(1rem, 1.15vw, 1.2rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.96);
}

.hero-session {
  margin-top: 10px;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.82);
  letter-spacing: 0.06em;
}

.speakers-section {
  margin-top: 36px;
}

.speakers-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.speaker-card {
  background: #ffffff;
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 18px 50px rgba(32, 57, 98, 0.08);
  text-align: center;
}

.speaker-photo {
  width: 124px;
  height: 124px;
  margin: 0 auto 18px;
  border-radius: 50%;
  overflow: hidden;
  border: 6px solid var(--accent);
  background: #f3f7ff;
}

.speaker-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.speaker-card h3 {
  margin: 0 0 10px;
  color: var(--bg-dark);
}

.speaker-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: #4b587d;
}

.cta-section {
  margin: 40px 0 16px;
}

.cta-card {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 24px;
  border-radius: 22px;
  background: linear-gradient(90deg, #0f2979 0%, #243d9a 100%);
  color: #fff;
}

.cta-label {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.85rem;
  opacity: 0.88;
}

#registerLink {
  display: inline-block;
  color: #fefefe;
  text-decoration: underline;
  word-break: break-all;
}

#registerBtn {
  border: none;
  background: var(--accent);
  color: #102249;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#registerBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(255, 210, 77, 0.35);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.details-section {
  margin-bottom: 24px;
}

.details-card {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 22px;
  background: #ffffff;
  border-radius: 24px;
  box-shadow: 0 14px 36px rgba(7, 25, 63, 0.08);
}

.detail-title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.detail-label,
.contact-row span {
  display: block;
  color: #4a5c8a;
}

.contact-row {
  display: grid;
  gap: 6px;
  text-align: right;
}

.footer-panel {
  margin-top: 2rem;
  padding: 24px 18px;
  border-radius: 24px;
  background: #152a62;
  color: #cdd6ff;
}

.partner-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.partner-logos img {
  height: 44px;
  object-fit: contain;
  filter: brightness(0.95);
}

.footer-note {
  text-align: center;
  margin: 0;
  font-size: 0.96rem;
}

@media (max-width: 760px) {
  .hero-panel {
    padding: 20px 16px 20px;
    border-radius: 24px;
  }

  .hero-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-content {
    margin-top: 24px;
  }

  .hero-content h1 {
    margin: 16px auto 10px;
    font-size: clamp(2.2rem, 8vw, 3rem);
    max-width: 100%;
  }

  .hero-dates {
    margin-top: 10px;
    font-size: 0.96rem;
  }

  .hero-session {
    font-size: 0.9rem;
  }

  .conference-badge {
    width: 78px;
    margin: 12px auto 0;
  }

  .cta-card,
  .details-card {
    flex-direction: column;
    text-align: left;
  }

  .contact-row {
    text-align: left;
  }
}