/* ================= BASE ================= */
body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  transition: background 0.3s, color 0.3s;
}

/* ================= LIGHT ================= */
body.light {
  background: #f3f4f8;
  color: #222;
}

body.light header {
  background: rgba(255,255,255,0.7);
}

body.light .btn {
  background: #333;
  color: white;
}

/* ================= DARK ================= */
body.dark {
  background: #0f0f0f;
  color: #e6e6e6;
}

body.dark header {
  background: rgba(20,20,20,0.7);
}

body.dark .btn {
  background: #ddd;
  color: #111;
}

/* ================= HEADER ================= */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 40px;
  position: sticky;
  top: 0;
}

nav a {
  margin: 0 12px;
  text-decoration: none;
  color: inherit;
  font-weight: 600;
}

.toggle-btn {
  border: none;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
}

/* ================= HERO ================= */
.hero {
  text-align: center;
  padding: 90px 20px 60px;
  background: linear-gradient(135deg, #5b8cff, #7fd1ff);
  color: white;
}

/* ================= BUTTONS ================= */
.btn {
  display: inline-block;
  padding: 14px 28px;
  margin: 10px;
  border-radius: 8px;
  text-decoration: none;
  transition: 0.25s;
}

.small {
  padding: 10px 20px;
}

/* ================= CARDS ================= */
.cards {
  display: flex;
  justify-content: center;
  gap: 25px;
  flex-wrap: wrap;
  padding: 40px 20px;
}

.card {
  width: 300px;
  padding: 25px;
  border-radius: 12px;
  background: inherit;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  text-align: center;
}

/* ================= ABOUT ================= */
.about {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* ================= FOOTER ================= */
footer {
  margin-top: 70px;
  padding: 30px;
  text-align: center;
  background: #222;
  color: white;
}

footer a {
  color: #7fcaff;
}
/* ================= ANNOUNCEMENT BAR ================= */

.announcement-bar {
  background-color: #ffd800; /* yellow */
  overflow: hidden;
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 10000;
  border-bottom: 1px solid rgba(0,0,0,0.1);
}

.announcement-track {
  display: inline-block;
  padding-left: 100%;
  animation: scrollText 18s linear infinite;
}

.announcement-track span {
  display: inline-block;
  padding: 10px 0;
  font-weight: 600;
  font-size: 14px;
  color: #000;
}

/* Pause animation on hover */
.announcement-bar:hover .announcement-track {
  animation-play-state: paused;
}

/* Animation */
@keyframes scrollText {
  from {
    transform: translateX(0%);
  }
  to {
    transform: translateX(-100%);
  }
}

/* Dark mode compatibility */
body.dark .announcement-bar {
  background-color: #ffcc00;
  color: #000;
}