/* BigDataLogin IDE — /download page (light theme, scoped) */

.bdl-download {
  --bdl-bg: #f4f7fc;
  --bdl-surface: #ffffff;
  --bdl-border: rgba(15, 23, 42, 0.08);
  --bdl-text: #0f172a;
  --bdl-muted: #64748b;
  --bdl-accent: #0284c7;
  --bdl-accent-2: #4f46e5;
  --bdl-emerald: #059669;
  --bdl-violet: #7c3aed;
  --bdl-amber: #d97706;
  --bdl-font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --bdl-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  box-sizing: border-box;
  font-family: var(--bdl-font);
  font-size: 17px;
  color: var(--bdl-text);
  background: var(--bdl-bg);
  min-height: calc(100vh - 80px);
  padding: 2rem 1rem 3.5rem;
  position: relative;
  overflow-x: hidden;
}

.bdl-download *,
.bdl-download *::before,
.bdl-download *::after {
  box-sizing: border-box;
}

.bdl-download a:not(.bdl-download__btn) {
  text-decoration: none;
  color: inherit;
}

/* Ambient background */
.bdl-download__bg {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 15% -10%, rgba(14, 165, 233, 0.12), transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 5%, rgba(99, 102, 241, 0.1), transparent 50%),
    radial-gradient(ellipse 50% 30% at 50% 100%, rgba(16, 185, 129, 0.08), transparent 45%);
}

.bdl-download__grid {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.55;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, black 0%, transparent 92%);
}

.bdl-download__inner {
  position: relative;
  z-index: 1;
  max-width: 72rem;
  margin: 0 auto;
}

/* Hero */
.bdl-download__hero {
  text-align: center;
  margin-bottom: 2.5rem;
}

.bdl-download__logo {
  display: block;
  width: 5.5rem;
  height: 5.5rem;
  margin: 0 auto 1rem;
  border-radius: 1.1rem;
  box-shadow: 0 8px 28px rgba(14, 165, 233, 0.18), 0 0 0 1px rgba(15, 23, 42, 0.06);
  background: #fff;
  object-fit: contain;
  padding: 0.35rem;
}

.bdl-download__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(2, 132, 199, 0.25);
  background: rgba(14, 165, 233, 0.08);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bdl-accent);
}

.bdl-download__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--bdl-emerald);
  box-shadow: 0 0 8px rgba(5, 150, 105, 0.45);
  animation: bdl-pulse 2s ease-in-out infinite;
}

@keyframes bdl-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.65; transform: scale(0.85); }
}

.bdl-download__title {
  margin: 1.25rem auto 0;
  max-width: 20ch;
  font-size: clamp(1.85rem, 5vw, 3.15rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #0f172a 0%, #334155 45%, #0284c7 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.bdl-download__lead {
  margin: 1rem auto 0;
  max-width: 48rem;
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  line-height: 1.65;
  color: var(--bdl-muted);
}

.bdl-download__lead strong {
  color: var(--bdl-text);
  font-weight: 700;
}

.bdl-download__recommended {
  margin-top: 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--bdl-accent);
  min-height: 1.35em;
}

/* Platform cards */
.bdl-download__platforms {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .bdl-download__platforms {
    grid-template-columns: repeat(2, 1fr);
  }
}

.bdl-download__card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.35rem 1.35rem 1.15rem;
  border-radius: 1rem;
  border: 1px solid var(--bdl-border);
  background: var(--bdl-surface);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 16px rgba(15, 23, 42, 0.04);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.bdl-download__card:hover {
  transform: translateY(-3px);
  border-color: rgba(14, 165, 233, 0.35);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.1), 0 0 0 1px rgba(14, 165, 233, 0.12);
}

.bdl-download__card.is-recommended {
  border-color: rgba(14, 165, 233, 0.45);
  box-shadow: 0 0 0 1px rgba(14, 165, 233, 0.2), 0 12px 36px rgba(14, 165, 233, 0.12);
}

.bdl-download__card.is-recommended::before {
  content: "Recommended";
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: linear-gradient(135deg, #e0f2fe, #ede9fe);
  color: #0369a1;
  border: 1px solid rgba(14, 165, 233, 0.25);
}

.bdl-download__card--windows:hover { border-color: rgba(37, 99, 235, 0.35); }
.bdl-download__card--linux-app:hover { border-color: rgba(5, 150, 105, 0.35); }
.bdl-download__card--linux-deb:hover { border-color: rgba(124, 58, 237, 0.35); }

.bdl-download__card-head {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
}

.bdl-download__icon {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.65rem;
  font-size: 1.35rem;
  background: #f1f5f9;
  border: 1px solid var(--bdl-border);
}

.bdl-download__card--windows .bdl-download__icon { color: #2563eb; }
.bdl-download__card--linux-app .bdl-download__icon { color: var(--bdl-emerald); }
.bdl-download__card--linux-deb .bdl-download__icon { color: var(--bdl-violet); }
.bdl-download__card--macos .bdl-download__icon { color: var(--bdl-amber); }

.bdl-download__card-os {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bdl-muted);
}

.bdl-download__card-title {
  display: block;
  margin-top: 0.15rem;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--bdl-text);
  line-height: 1.25;
}

.bdl-download__card-desc {
  margin: 0 0 1.1rem;
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--bdl-muted);
  flex: 1;
}

/* Anchor buttons: override Bootstrap/global link color */
.bdl-download a.bdl-download__btn,
.bdl-download a.download-ide-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  width: 100%;
  padding: 0.9rem 1.25rem;
  border: none;
  border-radius: 0.65rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  color: #ffffff !important;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  margin-top: auto;
  text-decoration: none !important;
}

.bdl-download a.bdl-download__btn:hover,
.bdl-download a.bdl-download__btn:focus,
.bdl-download a.bdl-download__btn:active,
.bdl-download a.bdl-download__btn:visited,
.bdl-download a.download-ide-btn:hover,
.bdl-download a.download-ide-btn:focus,
.bdl-download a.download-ide-btn:active,
.bdl-download a.download-ide-btn:visited {
  color: #ffffff !important;
  text-decoration: none !important;
}

.bdl-download a.bdl-download__btn:hover,
.bdl-download a.download-ide-btn:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.bdl-download span.bdl-download__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  width: 100%;
  padding: 0.9rem 1.25rem;
  border: none;
  border-radius: 0.65rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  margin-top: auto;
}

.bdl-download a.bdl-download__btn--win,
.bdl-download span.bdl-download__btn--win {
  background: linear-gradient(135deg, #0ea5e9, #4f46e5) !important;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
}

.bdl-download a.bdl-download__btn--appimage,
.bdl-download span.bdl-download__btn--appimage {
  background: linear-gradient(135deg, #10b981, #059669) !important;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.bdl-download a.bdl-download__btn--deb,
.bdl-download span.bdl-download__btn--deb {
  background: linear-gradient(135deg, #8b5cf6, #6366f1) !important;
  box-shadow: 0 4px 14px rgba(139, 92, 246, 0.35);
}

.bdl-download a.bdl-download__btn--macos,
.bdl-download span.bdl-download__btn--macos {
  background: linear-gradient(135deg, #f59e0b, #ea580c) !important;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
}

.bdl-download a.bdl-download__btn svg,
.bdl-download a.download-ide-btn svg {
  width: 1.2rem;
  height: 1.2rem;
  flex-shrink: 0;
  stroke: #ffffff !important;
  color: #ffffff !important;
}

.bdl-download__card--soon {
  opacity: 0.9;
  border-style: dashed;
  background: #fafbfc;
}

.bdl-download__card--soon span.bdl-download__btn {
  background: #e2e8f0 !important;
  color: #64748b !important;
  cursor: default;
  box-shadow: none;
}

.bdl-download__card--soon span.bdl-download__btn:hover {
  transform: none;
  filter: none;
}

/* Stats */
.bdl-download__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
  margin-top: 2rem;
}

@media (min-width: 768px) {
  .bdl-download__stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.bdl-download__stat {
  padding: 1rem 1.1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--bdl-border);
  background: var(--bdl-surface);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  text-align: center;
}

.bdl-download__stat-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--bdl-muted);
}

.bdl-download__stat-value {
  display: block;
  margin-top: 0.35rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bdl-text);
}

/* Features */
.bdl-download__features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2.5rem;
}

@media (min-width: 768px) {
  .bdl-download__features {
    grid-template-columns: repeat(3, 1fr);
  }
}

.bdl-download__feature {
  padding: 1.25rem;
  border-radius: 0.85rem;
  border: 1px solid var(--bdl-border);
  background: var(--bdl-surface);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.bdl-download__feature h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bdl-text);
}

.bdl-download__feature p {
  margin: 0.5rem 0 0;
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--bdl-muted);
}

.bdl-download__feature-icon {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  opacity: 0.95;
}

/* SHA256 */
.bdl-download__checksums {
  margin-top: 2rem;
  border-radius: 0.85rem;
  border: 1px solid var(--bdl-border);
  background: var(--bdl-surface);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  overflow: hidden;
}

.bdl-download__checksums summary {
  padding: 0.9rem 1.15rem;
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bdl-muted);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.bdl-download__checksums summary::-webkit-details-marker {
  display: none;
}

.bdl-download__checksums summary::after {
  content: "+";
  float: right;
  font-size: 1.1rem;
  color: var(--bdl-accent);
}

.bdl-download__checksums[open] summary::after {
  content: "−";
}

.bdl-download__checksums-body {
  padding: 0 1.15rem 1.15rem;
  border-top: 1px solid var(--bdl-border);
}

.bdl-download__checksum-row {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--bdl-muted);
}

.bdl-download__checksum-row:last-child {
  margin-bottom: 0;
}

.bdl-download__checksum-row strong {
  color: var(--bdl-text);
  font-weight: 600;
}

.bdl-download__checksum-row code {
  display: block;
  margin-top: 0.25rem;
  padding: 0.45rem 0.55rem;
  border-radius: 6px;
  background: #f1f5f9;
  border: 1px solid var(--bdl-border);
  font-family: var(--bdl-mono);
  font-size: 0.8rem;
  word-break: break-all;
  color: #475569;
}

.bdl-download__footnote {
  margin-top: 2rem;
  text-align: center;
  font-size: 1rem;
  color: var(--bdl-muted);
}

/* Installation guide */
.bdl-download__install {
  margin-top: 2.5rem;
  padding: 1.5rem;
  border-radius: 0.85rem;
  border: 1px solid var(--bdl-border);
  background: var(--bdl-surface);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.bdl-download__install-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--bdl-text);
  text-align: center;
}

.bdl-download__install-lead {
  margin: 0.65rem 0 1.25rem;
  text-align: center;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--bdl-muted);
}

.bdl-download__install-lead a {
  color: var(--bdl-accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.bdl-download__install-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.bdl-download__install-tab {
  appearance: none;
  border: 1px solid var(--bdl-border);
  background: #f8fafc;
  color: var(--bdl-muted);
  font-family: var(--bdl-font);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.bdl-download__install-tab:hover {
  color: var(--bdl-text);
  border-color: rgba(2, 132, 199, 0.35);
}

.bdl-download__install-tab.is-active {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.12), rgba(79, 70, 229, 0.1));
  border-color: rgba(2, 132, 199, 0.45);
  color: var(--bdl-accent);
}

.bdl-download__install-panel {
  display: none;
}

.bdl-download__install-panel.is-active {
  display: block;
}

.bdl-download__install-panel-title {
  margin: 0 0 0.85rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--bdl-text);
}

.bdl-download__install-steps {
  margin: 0 0 0.85rem;
  padding-left: 1.35rem;
  color: var(--bdl-text);
  font-size: 1rem;
  line-height: 1.65;
}

.bdl-download__install-steps li {
  margin-bottom: 0.45rem;
}

.bdl-download__install-steps li:last-child {
  margin-bottom: 0;
}

.bdl-download__install-code {
  margin: 0 0 0.85rem;
  padding: 0.85rem 1rem;
  border-radius: 0.65rem;
  background: #0f172a;
  border: 1px solid rgba(15, 23, 42, 0.15);
  overflow-x: auto;
}

.bdl-download__install-code code {
  font-family: var(--bdl-mono);
  font-size: 0.88rem;
  line-height: 1.55;
  color: #e2e8f0;
  white-space: pre-wrap;
  word-break: break-word;
}

.bdl-download__install-note {
  margin: 0.75rem 0 0;
  padding: 0.75rem 0.9rem;
  border-radius: 0.55rem;
  background: #f8fafc;
  border: 1px solid var(--bdl-border);
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--bdl-muted);
}

.bdl-download__install-note code,
.bdl-download__install-steps code {
  font-family: var(--bdl-mono);
  font-size: 0.88em;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  background: #f1f5f9;
  border: 1px solid var(--bdl-border);
  color: #334155;
}

/* Unavailable download */
.bdl-download__card.is-disabled {
  pointer-events: none;
  opacity: 0.6;
}

.bdl-download__card.is-disabled span.bdl-download__btn {
  background: #e2e8f0 !important;
  color: #94a3b8 !important;
  box-shadow: none;
}