@charset "utf-8";

/* ============================================
   Container & Layout
   ============================================ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   Banner (Visual Section)
   ============================================ */
.visual-section {
  position: relative;
  width: 100%;
  height: 544px;
  background: url(../img/49/79565665b9617.png) no-repeat 50% 50% / cover;
  margin-bottom: 48px;
}

/* ============================================
   Video Section
   ============================================ */
.content-section {
  padding: 0 0 32px;
}

.video-wrap {
  max-width: 100%;
  margin: 0 auto;
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 10px;
}

.video-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================
   Floating Quick Buttons
   ============================================ */
.quick-buttons {
  position: fixed;
  right: 24px;
  bottom: 100px;
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.qb-btn {
  width: 56px;
  height: 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  border-radius: 50%;
  color: #fff;
  font-size: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.qb-btn:hover {
  transform: scale(1.2);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.qb-zalo {
  background: #0056e0;
}

.qb-btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ============================================
   Responsive – Tablet (768–991px)
   ============================================ */
@media (max-width: 991px) {
  .visual-section {
    height: 340px;
    margin-bottom: 36px;
  }
}

/* ============================================
   Responsive – Mobile (< 768px)
   ============================================ */
@media (max-width: 767px) {
  .visual-section {
    height: 240px;
    margin-bottom: 28px;
  }

  .quick-buttons {
    right: 14px;
    bottom: 80px;
    gap: 10px;
  }

  .qb-btn {
    width: 48px;
    height: 48px;
    font-size: 7px;
  }

  .qb-btn svg {
    width: 16px;
    height: 16px;
  }
}

@media (max-width: 575px) {
  .visual-section {
    height: 180px;
    margin-bottom: 20px;
  }
}

/* ============================================
   Quick-buttons toggle (matches 49 button size)
   ============================================ */
.qb-toggle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
}

.qb-toggle img {
  width: 36px;
  height: 36px;
}

@media (max-width: 767px) {
  .qb-toggle {
    width: 48px;
    height: 48px;
  }

  .qb-toggle img {
    width: 30px;
    height: 30px;
  }
}

/* Back-to-top arrow (replaces book button on mobile) */
.qb-arrow {
  border: none;
  background: transparent;
  color: #730000;
  box-shadow: none;
  overflow: visible;
}

.qb-arrow svg {
  width: 26px;
  height: 26px;
}

@media (max-width: 767px) {
  .qb-arrow svg {
    width: 22px;
    height: 22px;
  }
}

#dat-ngay {
  scroll-margin-top: 120px;
}

#dat-ngay.reveal {
  transition: none;
}

@media (max-width: 767px) {
  #dat-ngay { scroll-margin-top: 70px; }
}

@media (max-width: 575px) {
  #dat-ngay { scroll-margin-top: 60px; }
}