/* ================= BASE THEME ================= */
.section-event-template {
  --cyan: #06b6d4;
  --accent: #0284c7;
  --accent-2: #0ea5e9;
  --biodas-blue: #313d5d;
  font-family: "Inter", system-ui, sans-serif;
  background: #f9fafc;
  color: #1a1a1a;
  line-height: 1.7;
}

/* ================= HERO ================= */
.event-hero {
  position: relative;
  background: linear-gradient(120deg, var(--biodas-blue), var(--accent), var(--cyan));
  background-size: 200% 200%;
  animation: gradientMove 10s ease infinite;
  padding: 80px 20px;
  text-align: center;
  color: white;
  border-bottom-left-radius: 50px;
  border-bottom-right-radius: 50px;
  overflow: hidden;
}
@keyframes gradientMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ================= LIGHT BEAM & PARTICLES ================= */
.light-beam {
  position: absolute; top: 0; left: -20%;
  width: 40%; height: 100%;
  background: linear-gradient(115deg, rgba(255,255,255,0.2), rgba(255,255,255,0.4), transparent);
  transform: skewX(-15deg);
  filter: blur(8px);
  animation: beamMove 6s linear infinite;
  z-index: 1;
}
@keyframes beamMove {
  0% { left: -40%; opacity: 0.2; }
  50% { left: 70%; opacity: 0.5; }
  100% { left: 120%; opacity: 0.2; }
}
.particle-container { position: absolute; inset: 0; overflow: hidden; z-index: 1; }
.particle {
  position: absolute;
  width: 6px; height: 6px;
  background: rgba(255,255,255,0.8);
  border-radius: 50%;
  animation: floatParticle 12s linear infinite;
  filter: blur(1px);
}
.particle:nth-child(1){top:80%;left:10%;animation-delay:0s;}
.particle:nth-child(2){top:60%;left:30%;animation-delay:2s;}
.particle:nth-child(3){top:50%;left:60%;animation-delay:4s;}
.particle:nth-child(4){top:70%;left:80%;animation-delay:6s;}
.particle:nth-child(5){top:40%;left:20%;animation-delay:1s;}
.particle:nth-child(6){top:90%;left:50%;animation-delay:3s;}
.particle:nth-child(7){top:30%;left:70%;animation-delay:5s;}
.particle:nth-child(8){top:75%;left:90%;animation-delay:7s;}
@keyframes floatParticle {
  0% { transform: translateY(0) scale(1); opacity: 0.6; }
  50% { transform: translateY(-120px) scale(1.3); opacity: 1; }
  100% { transform: translateY(-250px) scale(1); opacity: 0.4; }
}

.overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.1); z-index: 2; }
.hero-content { position: relative; z-index: 3; }

/* ================= TITLE ================= */
.hero-title {
  font-size: 56px;
  font-weight: 900;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(90deg, #fff, #b3ecff, #fff);
  background-size: 175%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 4s linear infinite;
  text-shadow: 0 0 18px rgba(255,255,255,0.3);
}
@keyframes shimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}
.hero-subtitle {
  max-width: 900px;
  margin: 20px auto;
  font-size: 22px;
  color: #e0f7ff;
}

/* ================= BUTTON ================= */
.btn-wrap { display: flex; justify-content: center; flex-wrap: wrap; }
.btn-register {
  display: inline-block;
  padding: 14px 28px;
  background: linear-gradient(90deg, var(--cyan), var(--accent-2));
  border-radius: 40px;
  color: #fff !important;
  text-decoration: none;
  font-weight: 700;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 4px 14px rgba(6,182,212,0.4);
}
.btn-register:hover {
  transform: translateY(-2px) scale(1.03);
  background: linear-gradient(90deg, var(--accent-2), var(--cyan));
}
.btn-register::before {
  content: "";
  position: absolute;
  top: 0; left: -80px;
  width: 50px; height: 100%;
  background: rgba(255,255,255,0.4);
  transform: skewX(-25deg);
  transition: left 0.6s;
}
.btn-register:hover::before { left: 120%; }

/* ================= BODY ================= */
.event-body {
  max-width: 900px;
  margin: -40px auto 0;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.08);
  padding: 60px 20px;
  position: relative;
  z-index: 3;
}
.event-body p { text-align: justify; }
.event-body h3 { color: var(--accent); margin-top: 30px; }

/* =============================
   ẢNH & FIGURE / IMAGES & FIGURE
   ============================= */
figure { 
  text-align: center; 
  margin: 16px 0; 
}

.img-wrap {
  width: 100%; 
  overflow: hidden; 
  border-radius: 12px; 
  border: 1px solid #e5e7eb;
}

.img {
  width: 100%; 
  display: block; 
  margin: auto; 
  height: auto;
}

figcaption {
  font-size: 13px; 
  color: #6b7280; 
  margin-top: 8px; 
  text-align: center;
}


/* ================= CALLOUT ================= */
.event-callout {
  border-left: 5px solid var(--accent);
  background: rgba(2,132,199,0.08);
  padding: 18px 20px;
  border-radius: 10px;
  margin-top: 30px;
  box-shadow: 0 0 10px rgba(2,132,199,0.2);
  animation: glowPulse 3s ease-in-out infinite alternate;
}
@keyframes glowPulse {
  from { box-shadow: 0 0 8px rgba(2,132,199,0.2); }
  to { box-shadow: 0 0 18px rgba(2,132,199,0.4); }
}

/* ================= COUNTDOWN ================= */
.countdown-container { text-align: center; margin: 30px 0; }
.countdown-label {
  font-weight: 600;
  color: var(--accent);
  font-size: 1.1rem;
  margin-bottom: 10px;
}
.countdown {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  font-family: "Roboto Mono", monospace;
}
.digit {
  background: rgba(240,255,255,0.9);
  border-radius: 10px;
  padding: 12px 16px;
  text-align: center;
  min-width: 70px;
}
.digit span { font-size: 1.6rem; color: var(--accent); display: block; }

/* ================= SOCIAL SHARE ================= */
.social-section { text-align: center; margin-top: 40px; }
.share-note { text-align: center; color: #475569; margin-bottom: 10px; }
.social-share { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; }
.social-share a {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(6,182,212,0.1);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  font-size: 1.1rem;
  border: 1px solid rgba(6,182,212,0.2);
  transition: all 0.3s;
}
.social-share a.fb:hover { background: #1877f2; color: #fff; }
.social-share a.x:hover { background: #000; color: #fff; }
.social-share a.in:hover { background: #0077b5; color: #fff; }

/* ================= RESPONSIVE ================= */
@media (max-width: 768px) {
  .hero-title { font-size: 36px; }
  .hero-subtitle { font-size: 18px; }
  .btn-register { padding: 12px 24px; font-size: 15px; }
  .event-body { padding: 40px 16px; }
  .digit { min-width: 60px; padding: 10px 12px; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 30px; line-height: 1.2; }
  .hero-subtitle { font-size: 16px; }
  .btn-register { font-size: 14px; }
  .countdown { gap: 10px; }
  .digit span { font-size: 1.3rem; }
}