:root {
  --bg: #0b1220;
  --bg-alt: #111b2a;
  --panel: rgba(14, 23, 36, 0.9);
  --panel-border: rgba(120, 146, 170, 0.32);
  --fg: #e5eef8;
  --muted: #aac0d6;
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --soft: rgba(125, 211, 252, 0.14);
  --shadow: rgba(2, 6, 23, 0.4);
  --code-bg: rgba(15, 23, 42, 0.85);
  --button-bg: rgba(148, 163, 184, 0.12);
  --button-hover: rgba(148, 163, 184, 0.2);
  --selection: rgba(125, 211, 252, 0.2);
  --availability-available-bg: rgba(34, 197, 94, 0.16);
  --availability-available-fg: #86efac;
  --availability-pending-bg: rgba(249, 115, 22, 0.16);
  --availability-pending-fg: #fdba74;
  --availability-unavailable-bg: rgba(239, 68, 68, 0.16);
  --availability-unavailable-fg: #fca5a5;
}

:root[data-theme="light"] {
  --bg: #f3f7ff;
  --bg-alt: #edf4ff;
  --panel: rgba(255, 255, 255, 0.9);
  --panel-border: rgba(101, 119, 142, 0.22);
  --fg: #1d2433;
  --muted: #425474;
  --accent: #0f6cbd;
  --accent-strong: #0b5ca2;
  --soft: rgba(15, 108, 189, 0.08);
  --shadow: rgba(15, 23, 42, 0.1);
  --code-bg: rgba(241, 245, 249, 0.9);
  --button-bg: rgba(148, 163, 184, 0.12);
  --button-hover: rgba(148, 163, 184, 0.18);
  --selection: rgba(15, 108, 189, 0.12);
  --availability-available-bg: #dcfce7;
  --availability-available-fg: #166534;
  --availability-pending-bg: #ffedd5;
  --availability-pending-fg: #9a3412;
  --availability-unavailable-bg: #fee2e2;
  --availability-unavailable-fg: #991b1b;
}

:root[data-theme="dark"] {
  --bg: #0b1220;
  --bg-alt: #111b2a;
  --panel: rgba(14, 23, 36, 0.9);
  --panel-border: rgba(120, 146, 170, 0.32);
  --fg: #e5eef8;
  --muted: #aac0d6;
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --soft: rgba(125, 211, 252, 0.14);
  --shadow: rgba(2, 6, 23, 0.4);
  --code-bg: rgba(15, 23, 42, 0.85);
  --button-bg: rgba(148, 163, 184, 0.12);
  --button-hover: rgba(148, 163, 184, 0.2);
  --selection: rgba(125, 211, 252, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

:root[data-theme="light"] {
  color-scheme: light;
}

:root[data-theme="dark"] {
  color-scheme: dark;
}

body {
  margin: 0;
  font-family: "Segoe UI", "SF Pro Display", "Consolas", "Liberation Mono", monospace;
  background:
    linear-gradient(180deg, rgba(125, 211, 252, 0.05), transparent 20%),
    var(--bg);
  color: var(--fg);
  min-height: 100vh;
}

::selection {
  background: var(--selection);
}

img {
  max-width: 100%;
  display: block;
}

button,
a {
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.page-shell {
  max-width: 1480px;
  margin: 0 auto;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(240px, 310px) minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.25rem;
}

.sidebar {
  position: sticky;
  top: 1rem;
  align-self: start;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: 0 15px 40px var(--shadow);
  border-radius: 18px;
  padding: 1.25rem 1rem;
}

.brand-block {
  padding: 0.25rem 0.35rem 1.05rem;
  border-bottom: 1px solid var(--panel-border);
  margin-bottom: 1rem;
}

.brand {
  font-size: clamp(1.3rem, 2vw, 1.9rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: lowercase;
}

.brand-subtitle {
  margin-top: 0.4rem;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.nav-stack {
  display: grid;
  gap: 0.5rem;
}

.nav-item {
  display: block;
  text-decoration: none;
  color: var(--fg);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.72rem 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.nav-item:hover,
.nav-item:focus-visible {
  background: var(--soft);
  border-color: var(--panel-border);
  outline: none;
}

.controls {
  margin-top: 1.5rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--panel-border);
  display: grid;
  gap: 1rem;
}

.control-group {
  display: grid;
  gap: 0.55rem;
}

.control-label {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.segment {
  appearance: none;
  border: 1px solid var(--panel-border);
  background: var(--button-bg);
  color: var(--fg);
  border-radius: 999px;
  padding: 0.52rem 0.8rem;
  cursor: pointer;
  font: inherit;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.segment:hover,
.segment:focus-visible {
  background: var(--button-hover);
  outline: none;
}

.segment.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #071521;
  font-weight: 700;
}

.content {
  display: grid;
  gap: 1.25rem;
  padding: 0.35rem 0 1.5rem;
}

.hero,
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  box-shadow: 0 18px 42px var(--shadow);
}

.hero {
  padding: 1.5rem 1.5rem 1.25rem;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.intro {
  margin: 0.95rem 0 0;
  max-width: 72ch;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.7;
}

.panel {
  padding: 1.2rem 1.25rem;
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--panel-border);
}

.panel-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 70px;
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  background: var(--soft);
  color: var(--accent);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
}

.panel-title {
  font-size: 1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.feature-list,
.list-stack,
.text-stack {
  display: grid;
  gap: 0.85rem;
}

.feature-item,
.news-item,
.text-block {
  position: relative;
  border: 1px solid var(--panel-border);
  background: var(--code-bg);
  border-radius: 14px;
  padding: 0.85rem 1rem;
}

.feature-item::before,
.news-item::before,
.text-block::before {
  content: ">";
  position: absolute;
  left: 0.7rem;
  top: 0.75rem;
  color: var(--accent);
  font-weight: 700;
}

.text-block::before {
  top: 1.1rem;
  line-height: 1.7;
}

.feature-item,
.news-item,
.text-block {
  padding-left: 2rem;
}

.feature-item strong,
.news-item strong,
.text-block strong {
  color: var(--fg);
}

.feature-item p,
.news-item p,
.text-block p,
.author-details p,
.author-details li {
  margin: 0.25rem 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.news-item p {
  white-space: pre-line;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.app-card {
  border: 1px solid var(--panel-border);
  background: var(--code-bg);
  border-radius: 16px;
  padding: 1rem;
  display: grid;
  align-content: start;
  gap: 0.6rem;
}

.app-topline {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
}

.app-name {
  margin: 0;
  font-size: 1.1rem;
}

.app-version {
  color: var(--accent);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.app-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.app-availability {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.availability-status {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 0.22rem 0.52rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.availability-status--available {
  background: var(--availability-available-bg);
  color: var(--availability-available-fg);
}

.availability-status--pending {
  background: var(--availability-pending-bg);
  color: var(--availability-pending-fg);
}

.availability-status--unavailable {
  background: var(--availability-unavailable-bg);
  color: var(--availability-unavailable-fg);
}

.content a.availability-status--available {
  color: var(--availability-available-fg);
}

.content a.availability-status--available:hover {
  text-decoration: none;
}

.content a.availability-status--available:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.app-tags {
  display: flex;
  align-content: start;
  gap: 0.45rem;
  flex-wrap: wrap;
  margin-top: 0.2rem;
}

.app-tag {
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 0.22rem 0.52rem;
  border-radius: 999px;
  background: var(--soft);
  border: 1px solid var(--panel-border);
  color: var(--accent);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.author-layout {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.portrait-box {
  width: 100%;
  height: 180px;
  min-height: 180px;
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  object-fit: cover;
}

.author-details {
  display: grid;
  gap: 0.7rem;
}

.author-details dl {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(112px, 140px) minmax(0, 1fr);
  gap: 0.5rem 0.8rem;
  align-items: start;
}

.author-details dt {
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}

.author-details dd {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.author-details a,
.content a {
  color: var(--accent);
  text-decoration: none;
}

.author-details a:hover,
.content a:hover,
.author-details a:focus-visible,
.content a:focus-visible {
  text-decoration: underline;
  outline: none;
}

.counter-wrap {
  display: flex;
  justify-content: center;
  padding: 0.5rem 0;
}

.flag-counter {
  border: 1px solid var(--panel-border);
  background: var(--code-bg);
  border-radius: 12px;
  padding: 0.25rem;
}

@media (max-width: 900px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: 0.8rem;
  }

  .brand-block,
  .hero,
  .panel {
    border-radius: 14px;
  }

  .hero {
    padding: 1.2rem 1rem;
  }

  .panel {
    padding: 1rem;
  }

  .author-layout {
    grid-template-columns: 1fr;
  }

  .portrait-box {
    height: 120px;
    min-height: 120px;
  }

  .segment {
    flex: 1 1 calc(50% - 0.4rem);
    text-align: center;
  }
}