/* ============================================================
   banner-slider.css — Banner slider trang chủ SportsVN
   Chiều cao: 220px desktop / 150px tablet / 130px mobile
   ============================================================ */

/* ============================================================
   1. KHUNG BANNER CHÍNH
   ============================================================ */
.banner-section {
  position: relative;
  width: 100%;
  height: 220px;
  border-radius: 12px;
  overflow: hidden;
  background: #0f172a;
  margin-bottom: 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.banner-slides {
  position: relative;
  width: 100%;
  height: 100%;
}

/* ============================================================
   2. TỪNG SLIDE
   ============================================================ */
.banner-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
  transform: translateX(30px);
  pointer-events: none;
}

.banner-slide.active {
  opacity: 1;
  transform: translateX(0);
  z-index: 2;
  pointer-events: auto;
}

.banner-slide.exit-left {
  opacity: 0;
  transform: translateX(-30px);
  z-index: 1;
}

.banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Fallback khi ảnh lỗi */
.banner-slide-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  width: 100%;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #1e3a8a, #0f172a);
  text-align: center;
  padding: 20px;
}

/* ============================================================
   3. DOTS (chấm chuyển slide)
   ============================================================ */
.banner-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 10;
  padding: 4px 10px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: 20px;
  backdrop-filter: blur(8px);
}

.banner-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.3s;
  padding: 0;
}

.banner-dot.active {
  background: #c4f82a;
  width: 20px;
  border-radius: 5px;
}

.banner-dot:hover {
  background: rgba(255, 255, 255, 0.9);
}

.banner-dot.active:hover {
  background: #c4f82a;
}

/* ============================================================
   4. NÚT ĐIỀU HƯỚNG PREV/NEXT
   ============================================================ */
.banner-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 300;
  cursor: pointer;
  z-index: 10;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  user-select: none;
  line-height: 1;
}

.banner-nav-btn:hover {
  background: rgba(196, 248, 42, 0.9);
  color: #0a0e1a;
  transform: translateY(-50%) scale(1.1);
}

.banner-nav-btn.prev { left: 12px; }
.banner-nav-btn.next { right: 12px; }

/* ============================================================
   5. NÚT CHỈNH SỬA (Admin)
   ============================================================ */
.banner-edit-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 20;
  background: rgba(37, 99, 235, 0.9);
  color: #fff;
  border: none;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  font-family: inherit;
}

.banner-edit-btn:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.5);
}

/* ============================================================
   6. MODAL QUẢN LÝ ẢNH
   ============================================================ */
.banner-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: banner-fadeIn 0.2s ease;
}

@keyframes banner-fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.banner-modal {
  background: #fff;
  border-radius: 16px;
  width: 100%;
  max-width: 720px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.banner-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid #e5e7eb;
}

.banner-modal-header h3 {
  margin: 0;
  font-size: 1.15rem;
  color: #0f172a;
}

.banner-modal-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: #6b7280;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner-modal-close:hover {
  background: #fee2e2;
  color: #ef4444;
}

.banner-modal-body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}

/* ============================================================
   7. UPLOAD AREA
   ============================================================ */
.banner-upload-area {
  border: 2px dashed #cbd5e1;
  border-radius: 12px;
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: #f8fafc;
  margin-bottom: 20px;
}

.banner-upload-area:hover,
.banner-upload-area.dragover {
  border-color: #2563eb;
  background: #eff6ff;
  transform: scale(1.01);
}

.banner-upload-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 10px;
}

.banner-upload-inner p {
  margin: 4px 0;
  font-size: 0.95rem;
  color: #334155;
}

.banner-upload-inner small {
  color: #94a3b8;
  font-size: 0.8rem;
}

/* ============================================================
   8. DANH SÁCH ẢNH TRONG MODAL
   ============================================================ */
.banner-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.banner-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  transition: all 0.2s;
  background: white;
}

.banner-list-item:hover {
  background: #f9fafb;
  border-color: #cbd5e1;
}

.banner-list-item img {
  width: 110px;
  height: 62px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
  background: #f1f5f9;
}

.banner-list-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.banner-list-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: #0f172a;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.banner-list-index {
  font-size: 0.78rem;
  color: #6b7280;
}

.banner-list-delete {
  background: #fee2e2;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 1.05rem;
  transition: all 0.2s;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner-list-delete:hover {
  background: #fecaca;
  transform: scale(1.05);
}

.banner-list-loading,
.banner-list-empty {
  text-align: center;
  color: #6b7280;
  padding: 24px 20px;
  font-size: 0.9rem;
  background: #f8fafc;
  border-radius: 10px;
  border: 1px dashed #e5e7eb;
}

/* ============================================================
   9. MODAL FOOTER
   ============================================================ */
.banner-modal-footer {
  padding: 14px 24px;
  border-top: 1px solid #e5e7eb;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background: #f9fafb;
}

.banner-btn-close {
  background: #f3f4f6;
  border: none;
  padding: 10px 22px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.9rem;
  transition: all 0.2s;
  color: #334155;
  font-family: inherit;
}

.banner-btn-close:hover {
  background: #e5e7eb;
  transform: translateY(-1px);
}

/* ============================================================
   10. RESPONSIVE MOBILE
   ============================================================ */
@media (max-width: 768px) {
  .banner-section {
    height: 150px;
    border-radius: 10px;
    margin-bottom: 14px;
  }

  .banner-nav-btn {
    width: 30px;
    height: 30px;
    font-size: 1.1rem;
  }

  .banner-nav-btn.prev { left: 6px; }
  .banner-nav-btn.next { right: 6px; }

  .banner-edit-btn {
    font-size: 0.72rem;
    padding: 6px 10px;
    top: 8px;
    right: 8px;
  }

  .banner-dots {
    bottom: 8px;
    padding: 3px 8px;
  }

  .banner-dot {
    width: 6px;
    height: 6px;
  }

  .banner-dot.active {
    width: 14px;
  }

  .banner-modal {
    max-height: 90vh;
  }

  .banner-modal-body {
    padding: 16px;
  }

  .banner-list-item img {
    width: 80px;
    height: 48px;
  }

  .banner-list-name {
    font-size: 0.82rem;
  }

  .banner-list-delete {
    width: 34px;
    height: 34px;
    font-size: 0.95rem;
  }
}

@media (max-width: 480px) {
  .banner-section {
    height: 130px;
  }

  .banner-slide-fallback {
    font-size: 1.1rem;
  }

  .banner-upload-area {
    padding: 20px 14px;
  }

  .banner-upload-icon {
    font-size: 2rem;
  }
}

/* ============================================================
   11. TIỆN ÍCH CHUNG
   ============================================================ */
.banner-hidden {
  display: none !important;
}

/* Hiệu ứng loading cho nút */
.banner-loading-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: banner-spin 0.8s linear infinite;
}

@keyframes banner-spin {
  to { transform: rotate(360deg); }
}