:root {
  --bg-main: #050509;
  --bg-gradient-top: #1a1a22;
  --bg-gradient-bottom: #111118;
  --card-bg: rgba(16, 16, 24, 0.92);
  --card-border: rgba(100, 149, 237, 0.12);
  --card-highlight: rgba(100, 149, 237, 0.18);
  --accent: #6495ed;
  --accent-soft: #7ba3ef;
  --accent-muted: #5a8ad0;
  --text-main: #f0f4ff;
  --text-muted: #a0b0c0;
  --danger: #ff6b6b;
  --danger-soft: rgba(220, 38, 38, 0.1);
  --shadow-strong: 0 26px 60px rgba(0, 0, 0, 0.9);
  --radius-lg: 26px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --transition-fast: 0.18s ease-out;
  --scrollbar-track: rgba(255, 255, 255, 0.02);
  --scrollbar-thumb: rgba(100, 149, 237, 0.35);
  --scrollbar-thumb-hover: rgba(100, 149, 237, 0.6);
}

* {
  box-sizing: border-box;
}

.material-symbols-outlined {
  font-variation-settings:
    "FILL" 0,
    "wght" 500,
    "GRAD" 0,
    "opsz" 24;
  vertical-align: middle;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, var(--bg-gradient-top) 0%, var(--bg-main) 55%);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem;
  background: radial-gradient(circle at top, var(--bg-gradient-top) 0%, var(--bg-main) 55%);
}

/* Global scrollbars */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

*::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

*::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
  border-radius: 999px;
}

*::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 999px;
}

*::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

.page {
  width: 100%;
  max-width: 720px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

#aerodl-root {
  flex: 1;
  display: flex;
  align-items: center;
}

.page-footer {
  margin-top: 1.2rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--accent-muted);
}

.card {
  width: 100%;
  border-radius: var(--radius-lg);
  padding: 2.2rem 2rem 1.75rem;
  background: linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.04),
      rgba(0, 0, 0, 0.35)
    ),
    radial-gradient(circle at top left, rgba(100, 149, 237, 0.08), transparent 55%),
    var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-strong);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  left: -40px;
  top: -60px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(100, 149, 237, 0.12), transparent 70%);
  opacity: 0.6;
  pointer-events: none;
}

.card-inner {
  position: relative;
  z-index: 1;
}

.center {
  text-align: center;
}

.header-logo {
  width: 90px;
  height: 90px;
  border-radius: 26px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.7);
  display: block;
  margin: 0 auto 0.75rem;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(6px);
}

.title {
  font-size: clamp(1.9rem, 3vw, 2.3rem);
  font-weight: 700;
  margin: 0;
  color: var(--text-main);
  letter-spacing: 0.03em;
}

.tagline {
  color: var(--accent);
  font-size: 1rem;
  margin: 0.25rem 0 0 0;
  font-weight: 500;
}

.subtitle,
.small-text {
  margin: 0.35rem 0 0 0;
  color: var(--accent-soft);
  font-size: 0.95rem;
}

.version-text {
  color: var(--accent-muted);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.section {
  margin-top: 1.6rem;
}

.section-box {
  background: radial-gradient(
      circle at top right,
      rgba(100, 149, 237, 0.08),
      transparent 60%
    ),
    rgba(10, 10, 20, 0.9);
  border: 1px solid var(--card-highlight);
  padding: 1.35rem 1.25rem;
  border-radius: var(--radius-md);
}

.section-box + .section-box {
  margin-top: 1rem;
}

.section-title {
  color: var(--text-main);
  font-size: 1.05rem;
  margin: 0 0 0.6rem 0;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.section-title span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.section-title span:first-child {
  font-size: 1.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.2rem;
  border-radius: 14px;
  border: 1px solid rgba(100, 149, 237, 0.25);
  text-decoration: none;
  color: var(--text-main);
  background: linear-gradient(
      120deg,
      rgba(100, 149, 237, 0.12),
      rgba(100, 149, 237, 0.08)
    ),
    rgba(10, 10, 18, 0.7);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    background var(--transition-fast);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.55);
  font-weight: 600;
}

.btn span:first-child {
  font-size: 1.1rem;
}

.btn:hover {
  transform: translateY(-1.5px);
  background: linear-gradient(
      120deg,
      rgba(100, 149, 237, 0.18),
      rgba(100, 149, 237, 0.12)
    ),
    rgba(12, 12, 22, 0.8);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.68);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(
      135deg,
      rgba(100, 149, 237, 0.18),
      rgba(100, 149, 237, 0.05)
    ),
    rgba(12, 12, 22, 0.8);
}

.btn-row {
  display: flex;
  justify-content: center;
  margin-top: 0.6rem;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--accent);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.07);
}

.assets-list {
  margin-top: 1rem;
  max-height: 320px;
  overflow: auto;
  padding-right: 4px;
  scrollbar-gutter: stable both-edges;
}

.asset-item {
  background: rgba(18, 18, 28, 0.8);
  padding: 0.9rem 1rem;
  margin: 0 0 0.75rem 0;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(6px);
}

.asset-item:hover {
  border-color: rgba(100, 149, 237, 0.35);
  background: linear-gradient(
    90deg,
    rgba(25, 25, 40, 0.7),
    rgba(0, 0, 0, 0.9)
  );
}

.asset-item.compact {
  margin: 0 0 0.5rem 0;
  padding: 0.75rem 0.85rem;
}

.assets-list.compact {
  margin-top: 0.5rem;
  padding-right: 12px;
  scrollbar-gutter: stable both-edges;
}

.asset-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  width: 100%;
}

.asset-line .btn {
  margin-left: auto;
}

.toggle-row {
  display: flex;
  justify-content: flex-end;
  margin: 0.35rem 0 0.45rem;
}

.asset-meta {
  flex: 1;
  min-width: 0;
}

.asset-name {
  color: #ffffe5;
  margin: 0;
  font-size: 0.86rem;
  word-break: break-word;
}

.asset-size {
  color: var(--accent-soft);
  margin: 0.2rem 0 0 0;
  font-size: 0.78rem;
  opacity: 0.95;
}

.toggle-button {
  all: unset;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-soft);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  position: relative;
  margin-left: -0.3rem;
  margin-top: 0.1rem;
}

.toggle-button span:first-child {
  font-size: 0.9rem;
}

.toggle-button:hover {
  background: rgba(100, 149, 237, 0.06);
  color: var(--accent);
}

.toggle-button:active {
  transform: translateY(1px);
}

.toggle-button.inline {
  margin-left: auto;
  padding: 0.25rem 0.65rem;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.footer {
  margin-top: 1.5rem;
  text-align: center;
  border-top: 1px solid rgba(100, 149, 237, 0.12);
  padding-top: 0.9rem;
  font-size: 0.8rem;
  color: var(--accent-muted);
}

.footer p {
  margin: 0 0 0.5rem 0;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.footer-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-soft);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(100, 149, 237, 0.15);
  background: rgba(100, 149, 237, 0.04);
  transition: all var(--transition-fast);
  font-size: 0.9rem;
}

.footer-link:hover {
  background: rgba(100, 149, 237, 0.12);
  border-color: rgba(100, 149, 237, 0.3);
  color: var(--accent);
  transform: translateY(-1px);
}

.footer-link-donate {
  border-color: rgba(255, 100, 100, 0.2);
  background: rgba(255, 100, 100, 0.05);
}

.footer-link-donate:hover {
  background: rgba(255, 100, 100, 0.15);
  border-color: rgba(255, 100, 100, 0.4);
  color: #ff9999;
}

.footer-link-donate .footer-icon {
  color: #ff8888;
}

/* Tooltips */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background: rgba(0, 0, 0, 0.95);
  color: var(--accent);
  padding: 0.4rem 0.7rem;
  border-radius: 8px;
  font-size: 0.85rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s ease;
  border: 1px solid rgba(100, 149, 237, 0.2);
  z-index: 1000;
}

[data-tooltip]::after {
  content: '';
  position: absolute;
  bottom: calc(100% + 3px);
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: rgba(100, 149, 237, 0.2);
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s ease;
  z-index: 1000;
}

[data-tooltip]:hover::before,
[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* Cross-platform section */
.section-cross-platform {
  background: linear-gradient(135deg, rgba(100, 149, 237, 0.03), rgba(0, 0, 0, 0.2));
  border-color: rgba(100, 149, 237, 0.1);
}

.os-tabs {
  margin-top: 1.5rem;
}

.tab-buttons {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid rgba(100, 149, 237, 0.1);
  padding-bottom: 0.5rem;
}

.tab-button {
  all: unset;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(100, 149, 237, 0.1);
  color: var(--accent-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
}

.tab-button:hover {
  background: rgba(100, 149, 237, 0.08);
  border-color: rgba(100, 149, 237, 0.25);
  color: var(--accent);
  transform: translateY(-1px);
}

.tab-button.active {
  background: linear-gradient(135deg, rgba(100, 149, 237, 0.15), rgba(100, 149, 237, 0.08));
  border-color: rgba(100, 149, 237, 0.35);
  color: var(--accent);
  box-shadow: 0 4px 12px rgba(100, 149, 237, 0.15);
}

.tab-button span:first-child {
  font-size: 1.2rem;
}

.tab-content {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.platform-downloads {
  padding: 1.25rem;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-md);
  border: 1px solid rgba(100, 149, 237, 0.08);
}

.platform-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-main);
  margin: 0 0 1rem 0;
  font-size: 1.1rem;
}

.platform-assets {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.arch-group {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.arch-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 150px;
  color: var(--accent-soft);
  font-size: 0.9rem;
  padding-top: 0.5rem;
}

.arch-label span:first-child {
  font-size: 1rem;
  color: var(--accent);
}

.arch-downloads {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.download-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  background: linear-gradient(135deg, rgba(100, 149, 237, 0.08), rgba(100, 149, 237, 0.04));
  border: 1px solid rgba(100, 149, 237, 0.2);
  border-radius: 999px;
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.85rem;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.download-chip:hover {
  background: linear-gradient(135deg, rgba(100, 149, 237, 0.15), rgba(100, 149, 237, 0.08));
  border-color: rgba(100, 149, 237, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(100, 149, 237, 0.2);
}

.download-chip span:first-child {
  font-size: 0.95rem;
}

.distro-group {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(100, 149, 237, 0.08);
}

.distro-group:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.distro-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-soft);
  margin: 0 0 1rem 0;
  font-size: 0.95rem;
  font-weight: 600;
}

/* Architecture options */
.arch-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.arch-options.compact {
  gap: 1rem;
  margin-top: 0.75rem;
}

.arch-option {
  background: rgba(10, 10, 20, 0.7);
  border: 1px solid rgba(100, 149, 237, 0.15);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: all var(--transition-fast);
}

.arch-option:hover {
  border-color: rgba(100, 149, 237, 0.3);
  background: rgba(12, 12, 24, 0.8);
}

.arch-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.arch-header span {
  color: var(--accent);
  font-size: 1.5rem;
}

.arch-header h3 {
  margin: 0;
  color: var(--text-main);
  font-size: 1.1rem;
  font-weight: 600;
}

.arch-desc {
  color: var(--accent-soft);
  font-size: 0.85rem;
  margin: 0 0 1rem 0;
}

.linux-distro-section {
  background: rgba(10, 10, 18, 0.5);
  padding: 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(100, 149, 237, 0.08);
}

.download-item {
  margin-bottom: 1rem;
}

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

/* Command box for installation scripts */
.command-box {
  position: relative;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(100, 149, 237, 0.2);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin: 0.75rem 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.command-box code {
  flex: 1;
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  color: var(--accent);
  font-size: 0.85rem;
  word-break: break-all;
  user-select: all;
  -webkit-user-select: all;
}

.copy-btn {
  all: unset;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: linear-gradient(135deg, rgba(100, 149, 237, 0.15), rgba(100, 149, 237, 0.08));
  border: 1px solid rgba(100, 149, 237, 0.3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--accent);
}

.copy-btn:hover {
  background: linear-gradient(135deg, rgba(100, 149, 237, 0.25), rgba(100, 149, 237, 0.15));
  transform: translateY(-1px);
}

.copy-btn:active {
  transform: translateY(0);
}

/* Error box */
.error-box {
  background: var(--danger-soft);
  border: 1px solid var(--danger);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-bottom: 1rem;
}

.error-text {
  color: var(--danger);
  margin: 0 0 0.5rem 0;
  font-size: 0.95rem;
}

.error-help {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.85rem;
}

.loading-screen {
  text-align: center;
  padding: 3rem 0;
}

.spinner {
  margin: 0 auto 1rem;
  width: 3rem;
  height: 3rem;
  border-radius: 9999px;
  border-width: 0.24rem;
  border-style: solid;
  border-color: rgba(100, 149, 237, 0.22);
  border-top-color: var(--accent-soft);
  animation: spin 0.9s linear infinite;
}

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

@media (max-width: 600px) {
  body {
    padding: 1rem;
  }
  .card {
    padding: 1.6rem 1.3rem 1.4rem;
    border-radius: 22px;
  }
  .section {
    margin-top: 1.3rem;
  }
}