* { box-sizing: border-box; margin:0; padding:0; }
body { font-family: Arial, sans-serif; line-height:1.6; color:#333; }
a { color:#007acc; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
header.hero {
  position: relative;
  height: 25vh;
  background: url('../img/bot_banner.png') no-repeat center/cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-overlay h1 {
  color: #fff;
  font-size: 2.5em; /* increased */
  text-align: center;
}
.hero-overlay .subtitle {
  color: #f0f0f0;
  font-size: 1.1em;
  margin-top: 0.5em;
}

/* Container */
.container {
  max-width: 800px;
  margin: 2em auto;
  padding: 0 1em;
}
.container h2 {
  margin-bottom: 0.5em;
  border-bottom: 2px solid #007acc;
  padding-bottom: 0.2em;
}

/* Team Section */
.team-section .team-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2em;
  justify-content: center;
}
.team-member {
  width: 150px;
  text-align: center;
}
.team-member img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 4px;
}
.team-member h3 {
  margin: 0.5em 0 0.2em;
  font-size: 1.1em;
}

/* Sponsors Section */
.sponsors-section {
  text-align: center;
}
.sponsor-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2em;
  margin: 1em 0;
}
.sponsor-grid img {
  max-width: 200px;
  max-height: 100px;
  object-fit: contain;
}

/* Footer */
footer {
  text-align: center;
  padding: 1em;
  background: #f4f4f4;
  font-size: 0.9em;
}

.topics-columns {
  /* Multi-column list styling */
  column-count: 2;
  column-gap: 1.5rem;
  list-style-position: inside; /* keeps bullets neatly inside */
  padding-left: 0;
  margin: 0;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
}

.schedule-table td {
  padding: 0.1rem 2rem; /* top/bottom: 0.75rem, left/right: 2rem */
}


/* Ensure mobile compatibility */
@media (max-width: 600px) {
  .topics-columns {
    column-count: 1;
  }

  .schedule-table td {
    padding: 0.5rem 1rem; /* adjust padding for mobile */
  }
}