/* ===== Firmware Download Page ===== */

/* Page Hero */
.firmware-hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-black);
  padding-top: 78px;
  padding-bottom: 60px;
  overflow: hidden;
}

.firmware-hero .container {
  position: relative;
  z-index: 2;
  width: 100%;
}

.firmware-hero-banner {
  position: relative;
  width: 100%;
  height: auto;
  overflow: hidden;
}

.firmware-hero-banner img {
  width: 100%;
  height: auto;
  display: block;
}

.firmware-hero-banner-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.firmware-hero-content {
  position: relative;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.firmware-hero-label {
  display: inline-block;
  font-size: 1.625rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-top: 48px;
  margin-bottom: 16px;
}

.firmware-hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: 16px;
}

.firmware-hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-gray-400);
  font-weight: 300;
  line-height: 1.8;
}

/* Filter Tabs */
.firmware-filter {
  position: sticky;
  top: 78px;
  z-index: 100;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
}

.firmware-filter-list {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 4px;
}

.firmware-filter-list::-webkit-scrollbar {
  display: none;
}

.firmware-filter-btn {
  flex-shrink: 0;
  padding: 10px 22px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-gray-300);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 100px;
  transition: all 0.3s ease;
}

.firmware-filter-btn:hover {
  color: var(--color-white);
  border-color: rgba(201, 169, 110, 0.4);
}

.firmware-filter-btn.active {
  color: var(--color-black);
  background: var(--color-gold);
  border-color: var(--color-gold);
}

/* Firmware Grid */
.firmware-section {
  background: var(--color-black);
  padding-top: 60px;
  padding-bottom: 140px;
  min-height: 60vh;
}

.firmware-grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 768px) {
  .firmware-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1280px) {
  .firmware-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Firmware Card — Apple App Store Hover Glow */
.firmware-card {
  position: relative;
  padding: 1px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.10);
  cursor: pointer;
  transition:
    transform 0.7s cubic-bezier(0.32, 0.72, 0, 1),
    box-shadow 0.7s cubic-bezier(0.32, 0.72, 0, 1),
    background 0.5s cubic-bezier(0.32, 0.72, 0, 1);
}

.firmware-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.16) 0%,
    rgba(255, 255, 255, 0) 40%
  );
  opacity: 0.5;
  transition: opacity 0.5s cubic-bezier(0.32, 0.72, 0, 1);
  pointer-events: none;
  z-index: 2;
}

.firmware-card-inner {
  position: relative;
  background: rgba(12, 12, 14, 0.58);
  backdrop-filter: blur(44px) saturate(180%);
  -webkit-backdrop-filter: blur(44px) saturate(180%);
  border-radius: calc(24px - 1px);
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, 0.08),
    inset 0 0 60px rgba(255, 255, 255, 0.03);
  overflow: hidden;
  transition:
    background 0.5s cubic-bezier(0.32, 0.72, 0, 1),
    border-color 0.5s cubic-bezier(0.32, 0.72, 0, 1);
}

.firmware-card:hover {
  transform: translateY(-6px) scale(1.005);
  background: rgba(255, 255, 255, 0.16);
  box-shadow:
    0 30px 70px rgba(0, 0, 0, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.firmware-card:hover::before {
  opacity: 1;
}

.firmware-card:hover .firmware-card-inner {
  background: rgba(18, 18, 20, 0.62);
  border-color: rgba(255, 255, 255, 0.12);
}

.firmware-card:active {
  transform: translateY(-3px) scale(0.997);
}

/* Card Entry Animation */
.firmware-card.reveal-up {
  opacity: 0;
  transform: translateY(64px) scale(0.96);
  filter: blur(12px);
  transition:
    opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.9s cubic-bezier(0.16, 1, 0.3, 1),
    filter 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.firmware-card.reveal-up.revealed {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

.firmware-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.firmware-card-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gold);
  padding: 6px 12px;
  background: rgba(201, 169, 110, 0.1);
  border-radius: 100px;
}

.firmware-card-model {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.firmware-card-version {
  font-size: 1rem;
  color: var(--color-gray-300);
  font-family: var(--font-serif);
}

.firmware-card-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.firmware-card-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-gray-400);
}

.firmware-card-meta-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-gold);
}

.firmware-card-changelog {
  margin-bottom: 24px;
}

.firmware-card-changelog h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-gray-300);
  margin-bottom: 12px;
}

.firmware-card-changelog ul {
  list-style: none;
}

.firmware-card-changelog li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9375rem;
  color: var(--color-gray-400);
  line-height: 1.7;
  margin-bottom: 8px;
}

.firmware-card-changelog li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-gold);
}

.firmware-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.firmware-card-size {
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

.firmware-card-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-black);
  background: var(--color-gold);
  border-radius: 100px;
  transition: all 0.3s ease;
}

.firmware-card-download:hover {
  background: var(--color-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 169, 110, 0.3);
}

.firmware-card-download svg {
  width: 16px;
  height: 16px;
}

/* Empty State */
.firmware-empty {
  text-align: center;
  padding: 80px 24px;
  grid-column: 1 / -1;
}

.firmware-empty svg {
  width: 64px;
  height: 64px;
  color: var(--color-gray-700);
  margin-bottom: 24px;
}

.firmware-empty h3 {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-gray-300);
  margin-bottom: 8px;
}

.firmware-empty p {
  color: var(--color-gray-500);
}

/* Modal */
.firmware-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s ease;
  z-index: 1100;
}

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

.firmware-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.96);
  width: 90%;
  max-width: 640px;
  max-height: 85vh;
  background: linear-gradient(180deg, #161618 0%, #0a0a0c 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.7);
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1101;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.firmware-modal.active {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.firmware-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 32px 32px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.firmware-modal-title h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.firmware-modal-title p {
  font-size: 1rem;
  color: var(--color-gold);
  font-family: var(--font-serif);
}

.firmware-modal-close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.firmware-modal-close:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
}

.firmware-modal-body {
  padding: 24px 32px;
  overflow-y: auto;
}

.firmware-modal-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.firmware-modal-meta-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 16px;
}

.firmware-modal-meta-item span {
  display: block;
  font-size: 0.75rem;
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.firmware-modal-meta-item strong {
  font-size: 1rem;
  color: var(--color-white);
  font-weight: 500;
}

.firmware-modal-changelog h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-gray-300);
}

.firmware-modal-changelog ul {
  list-style: none;
}

.firmware-modal-changelog li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9375rem;
  color: var(--color-gray-400);
  line-height: 1.8;
  margin-bottom: 10px;
}

.firmware-modal-changelog li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-gold);
}

/* 覆盖后台富文本中常见的黑色内联样式，确保在深色弹框中可读 */
.firmware-modal-changelog * {
  color: var(--color-gray-300) !important;
}

.firmware-modal-changelog a {
  color: var(--color-gold) !important;
  text-decoration: underline;
}

.firmware-modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  padding: 20px 32px 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.firmware-modal-btn {
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 100px;
  transition: all 0.3s ease;
}

.firmware-modal-btn.cancel {
  color: var(--color-gray-300);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.firmware-modal-btn.cancel:hover {
  background: rgba(255, 255, 255, 0.1);
}

.firmware-modal-btn.download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-black);
  background: var(--color-gold);
}

.firmware-modal-btn.download:hover {
  background: var(--color-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 169, 110, 0.3);
}

/* Responsive */
@media (max-width: 767px) {
  .firmware-hero {
    padding-top: 68px;
    padding-bottom: 40px;
  }

  .firmware-filter {
    top: 68px;
  }

  .firmware-filter-list {
    padding-left: 24px;
    padding-right: 24px;
  }

  .firmware-card {
    padding: 24px;
  }

  .firmware-modal-meta {
    grid-template-columns: 1fr;
  }

  .firmware-modal-header,
  .firmware-modal-body,
  .firmware-modal-footer {
    padding-left: 24px;
    padding-right: 24px;
  }
}