/* ==========================================
   下载页面专用样式 - 科技感升级版
   ========================================== */

/* 幻灯片头部区域 */
.download-hero {
  max-width: calc(1040px + var(--space-md) * 2);
  margin: calc(var(--header-height) + var(--space-xl)) auto 0;
  padding: 0 var(--space-md);
}

.download-slider {
  position: relative;
  height: 360px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 
    0 20px 50px rgba(17, 24, 39, 0.15),
    0 0 0 1px rgba(59, 130, 246, 0.15),
    0 0 40px rgba(59, 130, 246, 0.08);
}

/* 科技网格覆盖层 */
.download-slider::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image: 
    linear-gradient(rgba(59, 130, 246, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* 底部渐变遮罩 */
.download-slider::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(to top, rgba(17, 24, 39, 0.6) 0%, transparent 100%);
}

.download-slider__track {
  display: flex;
  height: 100%;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.download-slider__slide {
  flex: 0 0 100%;
  height: 100%;
  animation: slideZoom 8s ease-in-out infinite;
}

@keyframes slideZoom {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.download-slider__dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
  background: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(8px);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.download-slider__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.download-slider__dot:hover {
  background: rgba(255, 255, 255, 0.7);
}

.download-slider__dot.active {
  background: #3b82f6;
  width: 24px;
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.6);
}

/* 固定在幻灯片上的内容层 */
.download-hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.download-hero__content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  pointer-events: auto;
  padding: 0 var(--space-lg);
}

.download-hero__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--font-weight-bold);
  color: var(--white);
  margin-bottom: var(--space-xs);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
  letter-spacing: 2px;
}

.download-hero__title-sub {
  font-size: 0.5em;
  font-weight: var(--font-weight-normal);
  color: rgba(255, 255, 255, 0.8);
  margin-left: 0.5em;
}

.download-hero__desc {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.9);
  line-height: var(--line-height-relaxed);
  margin: 0 auto var(--space-md);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.download-hero__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-sm);
}

/* 幻灯片上按钮样式 - 科技感风格 */
.btn--hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 320px;
  padding: 14px 24px;
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #06b6d4 100%);
  color: var(--white);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
  position: relative;
  overflow: hidden;
}

.btn--hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: left 0.5s ease;
}

.btn--hero:hover::before {
  left: 100%;
}

.btn--hero:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(59, 130, 246, 0.5);
}

.btn--hero:active {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn--hero-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 320px;
  padding: 14px 24px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(8px);
}

.btn--hero-outline:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: var(--white);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.15);
}

.btn--hero-outline:active {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.15);
}

.btn--hero svg,
.btn--hero-outline svg {
  flex-shrink: 0;
}

.download-listing {
  padding: var(--space-xl) var(--space-md) var(--space-3xl);
  background: linear-gradient(180deg, var(--bg-secondary) 0%, #e8f0fe 50%, var(--bg-secondary) 100%);
  position: relative;
}

.download-listing::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.15), transparent);
}

.download-tabs {
  max-width: 1040px;
  margin: 0 auto var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  padding: 6px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: 
    0 4px 15px rgba(17, 24, 39, 0.04),
    0 1px 3px rgba(17, 24, 39, 0.03);
  backdrop-filter: blur(10px);
}

.download-tabs__item {
  padding: 10px 20px;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
}

.download-tabs__item:hover {
  color: var(--primary);
  background: rgba(59, 130, 246, 0.08);
}

.download-tabs__item.active {
  color: var(--white);
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.35);
}

.download-table {
  max-width: 1040px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-xl);
  overflow: visible;
  box-shadow: 
    0 4px 20px rgba(17, 24, 39, 0.05),
    0 1px 3px rgba(17, 24, 39, 0.03);
  backdrop-filter: blur(10px);
}

.download-table__head {
  display: grid;
  grid-template-columns: 42px 1fr 90px 140px;
  align-items: center;
  gap: var(--space-md);
  min-height: 44px;
  padding: 0 var(--space-lg);
  background: var(--gray-50);
  color: var(--text-muted);
  font-size: var(--font-size-xs);
  border-bottom: 1px solid var(--border-light);
}

.download-table__head span:first-child {
  grid-column: 2;
}

.download-row {
  display: grid;
  grid-template-columns: 42px 1fr 90px 140px;
  align-items: center;
  gap: var(--space-md);
  min-height: 84px;
  padding: 0 var(--space-lg);
  border-bottom: 1px solid var(--border-light);
  transition: opacity var(--transition-fast);
  position: relative;
}

.download-row:has(.download-row__action.open) {
  z-index: var(--z-dropdown);
}

.download-row[style*="display: none"] {
  opacity: 0;
}

.download-row:last-child {
  border-bottom: none;
}

.download-row__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
  transition: all 0.3s ease;
}

.download-row:hover .download-row__icon {
  transform: scale(1.05);
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.35);
}

.download-row__icon .icon {
  width: 18px;
  height: 18px;
}

.download-row__info {
  min-width: 0;
}

.download-row__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.download-row__desc {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.download-row__size {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-align: center;
}

.download-row__action {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  height: 36px;
  padding: 0 var(--space-sm) 0 var(--space-md);
  border: 1px solid #f59e0b;
  border-radius: var(--radius-md);
  color: #d97706;
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.15);
}

.download-row__action:hover {
  border-color: #d97706;
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(245, 158, 11, 0.25);
}

.download-row__action-text {
  pointer-events: none;
}

.download-row__action-icon {
  width: 16px;
  height: 16px;
  color: #faad14;
  transition: transform var(--transition-fast);
  pointer-events: none;
}

.download-row__action.open .download-row__action-icon {
  transform: rotate(180deg);
}

.download-row__dropdown {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 140px;
  padding: 6px;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

.download-row__action.open .download-row__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.download-row__dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.download-row__dropdown-item:hover {
  background: rgba(66, 133, 244, 0.08);
  color: var(--primary);
}

.download-row__dropdown-item .icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.download-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-xl);
}

/* ThinkPHP 默认分页样式 */
.download-pagination a,
.download-pagination span {
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  background: var(--white);
}

.download-pagination a:hover {
  color: var(--white);
  border-color: var(--primary);
  background: var(--primary);
}

.download-pagination span.current,
.download-pagination .current {
  color: var(--white);
  border-color: var(--primary);
  background: var(--primary);
}

.download-pagination span.disabled,
.download-pagination .disabled {
  color: var(--text-muted);
  cursor: not-allowed;
  opacity: 0.5;
}

.download-pagination span.disabled:hover {
  background: var(--white);
  border-color: var(--border);
  color: var(--text-muted);
}

.download-pagination__item {
  min-width: 30px;
  height: 30px;
  padding: 0 var(--space-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-xs);
  transition: all var(--transition-fast);
}

.download-pagination__item:hover,
.download-pagination__item.active {
  color: var(--white);
  border-color: var(--primary);
  background: var(--primary);
}

@media (max-width: 992px) {
  .download-table__head,
  .download-row {
    grid-template-columns: 42px 1fr 70px 120px;
  }
}

@media (max-width: 768px) {
  .download-header__actions {
    flex-direction: column;
  }

  .download-header__actions .btn {
    width: 100%;
  }

  .download-table {
    border-radius: var(--radius-md);
  }

  .download-table__head {
    display: none;
  }

  .download-row {
    grid-template-columns: 32px 1fr;
    gap: var(--space-xs) var(--space-md);
    padding: var(--space-md) 0;
    min-height: auto;
  }

  .download-row__icon {
    grid-row: 1 / span 3;
    width: 28px;
    height: 28px;
    align-self: start;
  }

  .download-row__info {
    grid-column: 2;
  }

  .download-row__size {
    grid-column: 2;
    text-align: left;
    font-size: var(--font-size-xs);
  }

  .download-row__action {
    grid-column: 2;
    justify-self: start;
    margin-top: 2px;
  }

  .download-tabs {
    gap: var(--space-md);
  }
}

/* ============================================
   Download Modal / 下载声明弹窗
   ============================================ */
.download-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.download-modal.active {
  opacity: 1;
  visibility: visible;
}

/* Backdrop */
.download-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* Dialog */
.download-modal__dialog {
  position: relative;
  width: 92%;
  max-width: 900px;
  background: var(--white, #fff);
  border: 1px solid var(--border-light, #E8EAED);
  border-radius: var(--radius-xl, 16px);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.1),
    0 0 0 1px rgba(66, 133, 244, 0.06);
  transform: scale(0.95) translateY(12px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
}

.download-modal.active .download-modal__dialog {
  transform: scale(1) translateY(0);
}

/* Decorative top accent line */
.download-modal__dialog::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary, linear-gradient(135deg, #4285F4, #3367D6));
}

/* Header */
.download-modal__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm, 8px);
  padding: var(--space-lg, 20px) var(--space-lg, 20px) var(--space-md, 16px);
  border-bottom: 1px solid var(--border-light, #E8EAED);
}

.download-modal__header-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(66, 133, 244, 0.08);
  flex-shrink: 0;
}

.download-modal__header-icon .icon {
  color: var(--primary, #4285F4);
}

.download-modal__title {
  flex: 1;
  font-size: var(--font-size-lg, 18px);
  font-weight: 600;
  color: var(--text-primary, #202124);
  margin: 0;
}

.download-modal__close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-light, #E8EAED);
  border-radius: 8px;
  color: var(--text-muted, #9AA0A6);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.download-modal__close:hover {
  background: rgba(239, 68, 68, 0.06);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--danger, #EF4444);
}

/* Body */
.download-modal__body {
  padding: var(--space-lg, 20px);
  max-height: 50vh;
  overflow-y: auto;
}

.download-modal__body::-webkit-scrollbar {
  width: 4px;
}

.download-modal__body::-webkit-scrollbar-track {
  background: transparent;
}

.download-modal__body::-webkit-scrollbar-thumb {
  background: rgba(66, 133, 244, 0.2);
  border-radius: 2px;
}

/* Content */
.download-modal__content {
  margin-bottom: var(--space-md, 16px);
}

/* Scrollable text box */
.download-modal__textbox {
  max-height: 420px;
  overflow-y: auto;
  padding: var(--space-md, 16px);
  background: var(--gray-50, #FAFAFA);
  border: 1px solid var(--border, #DADCE0);
  border-radius: 10px;
  scroll-behavior: smooth;
}

.download-modal__textbox::-webkit-scrollbar {
  width: 5px;
}

.download-modal__textbox::-webkit-scrollbar-track {
  background: transparent;
  margin: 8px 0;
}

.download-modal__textbox::-webkit-scrollbar-thumb {
  background: var(--border-dark, #BDC1C6);
  border-radius: 3px;
}

.download-modal__textbox::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400, #A1A1AA);
}

.download-modal__textbox p {
  color: var(--text-secondary, #5F6368);
  font-size: 13px;
  line-height: 1.75;
  margin: 0 0 12px 0;
}

.download-modal__textbox p:first-child {
  color: var(--text-primary, #202124);
  font-weight: 500;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light, #E8EAED);
}

.download-modal__textbox p:last-child {
  margin-bottom: 0;
}

.download-modal__textbox p strong {
  color: var(--text-primary, #202124);
  font-size: 13px;
}

/* Agree checkbox */
.download-modal__agree {
  display: flex;
  align-items: center;
  gap: var(--space-sm, 10px);
  padding: 10px 12px;
  background: rgba(66, 133, 244, 0.04);
  border: 1px solid var(--border-light, #E8EAED);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.download-modal__agree:hover {
  background: rgba(66, 133, 244, 0.08);
  border-color: rgba(66, 133, 244, 0.3);
}

.download-modal__agree input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.download-modal__checkbox {
  position: relative;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-dark, #BDC1C6);
  border-radius: 5px;
  flex-shrink: 0;
  transition: all 0.25s ease;
}

.download-modal__checkbox::after {
  content: '';
  position: absolute;
  top: 1px;
  left: 5px;
  width: 5px;
  height: 9px;
  border: solid transparent;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  transition: all 0.2s ease;
}

.download-modal__agree input:checked ~ .download-modal__checkbox {
  background: var(--primary, #4285F4);
  border-color: transparent;
}

.download-modal__agree input:checked ~ .download-modal__checkbox::after {
  border-color: #fff;
  transform: rotate(45deg) scale(1);
}

.download-modal__agree span:last-child {
  color: var(--text-primary, #202124);
  font-size: 13px;
  font-weight: 500;
}

/* Footer */
.download-modal__footer {
  display: flex;
  gap: var(--space-sm, 10px);
  padding: var(--space-md, 16px) var(--space-lg, 20px) var(--space-lg, 20px);
  border-top: 1px solid var(--border-light, #E8EAED);
}

.download-modal__btn-cancel {
  flex: 1;
  padding: 10px 20px;
  background: var(--white, #fff);
  border: 1px solid var(--border, #DADCE0);
  border-radius: 10px;
  color: var(--text-secondary, #5F6368);
  font-size: var(--font-size-sm, 14px);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.download-modal__btn-cancel:hover {
  background: var(--gray-50, #FAFAFA);
  border-color: var(--border-dark, #BDC1C6);
  color: var(--text-primary, #202124);
}

.download-modal__btn-confirm {
  flex: 1.5;
  padding: 10px 20px;
  background: var(--gradient-primary, linear-gradient(135deg, #4285F4, #3367D6));
  border: none;
  border-radius: 10px;
  color: var(--white, #fff);
  font-size: var(--font-size-sm, 14px);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-primary, 0 4px 14px rgba(66, 133, 244, 0.25));
}

.download-modal__btn-confirm:hover:not(:disabled) {
  box-shadow: 0 6px 20px rgba(66, 133, 244, 0.35);
  transform: translateY(-1px);
}

.download-modal__btn-confirm:disabled {
  background: var(--gray-200, #E4E4E7);
  color: var(--text-muted, #9AA0A6);
  box-shadow: none;
  cursor: not-allowed;
}

/* Mobile responsive */
@media (max-width: 640px) {
  .download-modal__dialog {
    width: 95%;
    max-width: none;
    margin: var(--space-md, 16px);
  }

  .download-modal__body {
    max-height: 45vh;
  }

  .download-modal__content ol li {
    padding-left: 30px;
    padding-right: var(--space-sm, 10px);
  }
}