/* ===== Architecture Diagram ===== */

.tf-arch {
  margin: 1.5rem 0 2rem;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--md-default-fg-color--lightest);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.tf-arch-layer {
  padding: 0.5rem 1rem;
  display: flex;
  align-items: stretch;
  gap: 0.75rem;
  position: relative;
}

.tf-arch-layer--model {
  background: linear-gradient(135deg, rgba(33, 150, 243, 0.12), rgba(33, 150, 243, 0.04));
}

.tf-arch-layer--compute {
  background: linear-gradient(135deg, rgba(0, 200, 83, 0.12), rgba(0, 200, 83, 0.04));
}

.tf-arch-layer--ops {
  background: linear-gradient(135deg, rgba(255, 152, 0, 0.12), rgba(255, 152, 0, 0.04));
}

.tf-arch-layer-label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--md-default-fg-color--light);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 1.5rem;
  flex-shrink: 0;
}

.tf-arch-cards {
  display: flex;
  gap: 0.75rem;
  flex: 1;
  flex-wrap: wrap;
  padding: 0.5rem 0;
}

/* Card base */
.tf-arch-card {
  flex: 1;
  min-width: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 2px solid transparent;
  background: var(--md-default-bg-color);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.07);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

/* Colored left accent bar */
.tf-arch-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 4px 0 0 4px;
  transition: width 0.25s ease;
}

.tf-arch-card--model::before { background: #2196f3; }
.tf-arch-card--compute::before { background: #00c853; }
.tf-arch-card--ops::before { background: #ff9800; }

/* Shimmer sweep on hover */
.tf-arch-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: left 0.5s ease;
  pointer-events: none;
}

.tf-arch-card:hover::after {
  left: 120%;
}

.tf-arch-card:hover::before {
  width: 6px;
}

/* Hover — colored glow matching layer */
.tf-arch-card:hover {
  transform: translateY(-4px);
}

.tf-arch-card--model:hover {
  box-shadow: 0 8px 24px rgba(33, 150, 243, 0.28);
  border-color: #2196f3;
}

.tf-arch-card--compute:hover {
  box-shadow: 0 8px 24px rgba(0, 200, 83, 0.28);
  border-color: #00c853;
}

.tf-arch-card--ops:hover {
  box-shadow: 0 8px 24px rgba(255, 152, 0, 0.28);
  border-color: #ff9800;
}

.tf-arch-card:active {
  transform: translateY(-2px);
}

.tf-arch-card-title {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--md-default-fg-color);
  text-align: center;
}

/* Arrow — CSS drawn */
.tf-arch-arrow {
  text-align: center;
  padding: 0.2rem 0;
  line-height: 1;
}

.tf-arch-arrow::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-top: 9px solid var(--md-default-fg-color--lighter);
  opacity: 0.45;
}

/* ===== Compact variant ===== */
.tf-arch--compact .tf-arch-card {
  min-width: 100px;
  padding: 0.5rem 0.75rem;
}

.tf-arch--compact .tf-arch-card-title {
  font-size: 0.8rem;
}

.tf-arch--compact .tf-arch-layer {
  padding: 0.25rem 0.75rem;
  gap: 0.5rem;
}

.tf-arch--compact .tf-arch-cards {
  gap: 0.5rem;
  padding: 0.25rem 0;
}

.tf-arch--compact .tf-arch-arrow::after {
  border-left-width: 6px;
  border-right-width: 6px;
  border-top-width: 7px;
}

/* ===== Hero header ===== */
.md-typeset h1 {
  background: linear-gradient(135deg, var(--md-primary-fg-color), #42a5f5);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  padding-bottom: 0.3rem;
}

/* ===== Hero banner ===== */
.tf-hero {
  border-radius: 14px;
  padding: 2rem 1.5rem;
  margin: 1rem 0 2rem;
  text-align: center;
  background: linear-gradient(135deg, rgba(33, 150, 243, 0.08), rgba(0, 200, 83, 0.06), rgba(255, 152, 0, 0.08));
  border: 1px solid var(--md-default-fg-color--lightest);
}

.tf-hero p {
  margin: 0.5rem auto;
  max-width: 50rem;
  font-size: 0.95rem;
  line-height: 1.7;
}

.tf-hero-badges {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.tf-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.tf-hero-badge--dce {
  background: rgba(33, 150, 243, 0.12);
  color: #1565c0;
  border: 1px solid rgba(33, 150, 243, 0.3);
}

.tf-hero-badge--drun {
  background: rgba(0, 200, 83, 0.12);
  color: #2e7d32;
  border: 1px solid rgba(0, 200, 83, 0.3);
}

.tf-hero-badge--tf {
  background: rgba(255, 152, 0, 0.12);
  color: #e65100;
  border: 1px solid rgba(255, 152, 0, 0.3);
}

/* ===== CTA buttons centered ===== */
.tf-cta {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  padding: 1.5rem;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(33, 150, 243, 0.06), rgba(255, 152, 0, 0.06));
  border: 1px solid var(--md-default-fg-color--lightest);
}

.tf-cta .md-button {
  margin: 0;
}

/* ===== Section divider ===== */
.tf-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--md-default-fg-color--lightest), transparent);
  margin: 2.5rem 0;
}

/* ===== Responsive ===== */
@media screen and (max-width: 600px) {
  .tf-arch-layer-label {
    display: none;
  }
  .tf-arch-cards {
    flex-direction: column;
  }
  .tf-arch-card {
    min-width: auto;
  }
  .tf-cta {
    flex-direction: column;
    align-items: center;
  }
  .tf-hero {
    padding: 1.5rem 1rem;
  }
}

/* ===== Dark mode ===== */
[data-md-color-scheme="slate"] .tf-arch-card {
  background: var(--md-default-fg-color--lightest);
}

[data-md-color-scheme="slate"] .tf-arch-card:hover {
  background: var(--md-default-fg-color--lighter);
}

[data-md-color-scheme="slate"] .tf-arch-card--model:hover {
  box-shadow: 0 8px 24px rgba(33, 150, 243, 0.45);
}

[data-md-color-scheme="slate"] .tf-arch-card--compute:hover {
  box-shadow: 0 8px 24px rgba(0, 200, 83, 0.45);
}

[data-md-color-scheme="slate"] .tf-arch-card--ops:hover {
  box-shadow: 0 8px 24px rgba(255, 152, 0, 0.45);
}

[data-md-color-scheme="slate"] .tf-hero {
  background: linear-gradient(135deg, rgba(33, 150, 243, 0.15), rgba(0, 200, 83, 0.1), rgba(255, 152, 0, 0.12));
}

[data-md-color-scheme="slate"] .tf-cta {
  background: linear-gradient(135deg, rgba(33, 150, 243, 0.1), rgba(255, 152, 0, 0.1));
}

[data-md-color-scheme="slate"] .tf-hero-badge--dce {
  color: #64b5f6;
}

[data-md-color-scheme="slate"] .tf-hero-badge--drun {
  color: #81c784;
}

[data-md-color-scheme="slate"] .tf-hero-badge--tf {
  color: #ffb74d;
}

/* Hero badge links — clickable */
a.tf-hero-badge {
  text-decoration: none;
  transition: all 0.2s ease;
}

a.tf-hero-badge:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

a.tf-hero-badge--dce:hover {
  background: rgba(33, 150, 243, 0.2);
}

a.tf-hero-badge--drun:hover {
  background: rgba(0, 200, 83, 0.2);
}

a.tf-hero-badge--tf:hover {
  background: rgba(255, 152, 0, 0.2);
}

/* Center section titles */

/* ===== Tab labels — larger, bolder, colored ===== */
.tabbed-labels label {
  font-weight: 700;
  font-size: 1.1rem;
  padding: 0.6rem 1.2rem;
}

.tabbed-labels .tabbed-label {
  border-radius: 8px 8px 0 0;
  transition: all 0.2s ease;
}

.tabbed-labels .tabbed-label:hover {
  background: rgba(0, 0, 0, 0.04);
}

/* Active tab — colored underline accent */
.tabbed-labels input:checked + .tabbed-label {
  color: var(--md-primary-fg-color);
}

/* ===== Optional / pluggable cards ===== */
.tf-arch-card--optional {
  border-style: dashed;
  border-width: 2px;
  border-color: var(--md-default-fg-color--lighter);
  opacity: 0.6;
  background: repeating-linear-gradient(
    135deg,
    var(--md-default-bg-color),
    var(--md-default-bg-color) 6px,
    rgba(0, 0, 0, 0.02) 6px,
    rgba(0, 0, 0, 0.02) 12px
  );
}

.tf-arch-card--optional .tf-arch-card-title::after {
  content: "可选";
  display: inline-block;
  font-size: 0.55rem;
  font-weight: 600;
  color: var(--md-default-fg-color--light);
  background: var(--md-default-fg-color--lightest);
  padding: 0.05rem 0.3rem;
  border-radius: 4px;
  margin-left: 0.3rem;
  vertical-align: middle;
  letter-spacing: 0.05em;
}

.tf-arch-card--optional:hover {
  opacity: 1;
  border-style: solid;
}

[data-md-color-scheme="slate"] .tf-arch-card--optional {
  border-color: var(--md-default-fg-color--light);
  background: repeating-linear-gradient(
    135deg,
    var(--md-default-fg-color--lightest),
    var(--md-default-fg-color--lightest) 6px,
    rgba(255, 255, 255, 0.03) 6px,
    rgba(255, 255, 255, 0.03) 12px
  );
}

[data-md-color-scheme="slate"] .tf-arch-card--optional .tf-arch-card-title::after {
  color: var(--md-default-fg-color--light);
  background: rgba(255, 255, 255, 0.1);
}