.hero {
  background: linear-gradient(135deg, #003f5c, #006699);
  color: white;
  padding: 3rem 1.5rem;
  text-align: center;
}

.cta-btn {
  display: inline-block;
  background: white;
  color: var(--primary);
  padding: 10px 22px;
  border-radius: 6px;
  font-weight: 600;
  margin-top: 1rem;
}

.card {
  background: white;
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: 0 8px 20px rgba(0,0,0,0.06);
}

/* ===============================
   IEEE HEADER (FINAL)
   =============================== */

.ieee-header {
  background: #ffffff url("../images/bg.svg") center / cover no-repeat;
  border-bottom: 1px solid #e5e7eb;
}

/* Logos strip */
.header-logos {
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  margin-bottom: 0.75rem;
}

/* Logos (de-emphasized, professional) */
.header-logo {
  object-fit: contain;
  opacity: 0.9;
}

.ieee-logo {
  height: 56px;
  max-width: 150px;
}

.university-logo {
  height: 64px;
  max-width: 170px;
}

/* Titles */
.conference-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: #003b5c;
}

.conference-theme {
  font-size: 2rem;
  font-weight: 700;
  color: #004f7c;
  letter-spacing: 0.2px;
}

.conference-acronym {
  font-size: 1rem;
  font-weight: 600;
  color: #374151;
}

/* Meta info */
.conference-meta {
  font-size: 0.95rem;
  color: #374151;
  line-height: 1.6;
}

/* Mobile scaling */
@media (max-width: 768px) {
  .ieee-logo {
    height: 40px;
  }

  .university-logo {
    height: 44px;
  }
}

/* ================================
            Menu bar
   ================================*/

/* Active item background */
.list-group-item.active {
  background-color: #003b5c !important;
  border-color: #003b5c !important;
  color: #ffffff !;
}

/* Hover state */
.list-group-item-action:hover {
  background-color: #f3f6f9;
}

/* Semibold text everywhere in menu */
.list-group-item,
.list-group-item-action,
.list-group-item button {
  font-weight: 600;
  color: #1f2937;
}

/* Keep active text white */
.list-group-item.active {
  color: #ffffff;
}


/* ===============================
   IMPORTANT DATES – IEEE SIMPLE
   =============================== */

/* Blinking red dot */

.blink {
    color: #dc3545;
    display: inline-block;
    animation: blink 1.4s infinite;
}

.blink-dot {
  width: 8px;
  height: 8px;
  background-color: #dc3545; /* Bootstrap danger red */
  border-radius: 50%;
  display: inline-block;
  animation: blink 1.2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ===============================
   IEEE FOOTER
   =============================== */

.bg-footer {
  background-color: #002855 !important; /* IEEE deep blue */
}