/**
 * index.css — Signal Desk home (bright lumen editorial layout)
 */

:root {
  --sx-bg: #F0F7FF;
  --sx-surface: #FFFFFF;
  --sx-ink: #1E3A5F;
  --sx-muted: #64748B;
  --sx-accent: #0EA5E9;
  --sx-cobalt: #2563EB;
  --sx-yellow: #FDE047;
  --sx-highlight: #E0F2FE;
  --sx-mint: #CCFBF1;
  --sx-border: #BFDBFE;
  --sx-border-strong: #7DD3FC;
  --sx-max: 1280px;
  --sx-gap: 1.25rem;
  --sx-font-ui: 'Outfit', system-ui, sans-serif;
  --sx-font-display: 'Libre Baskerville', Georgia, serif;
  --sx-font-mono: 'IBM Plex Mono', ui-monospace, monospace;
  --sx-radius: 14px;
  --sx-shadow: 0 12px 40px rgba(14, 116, 178, 0.12);
  --sx-shadow-sm: 0 4px 18px rgba(14, 116, 178, 0.08);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

.sx-sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

html { scroll-behavior: smooth; font-size: 16px; }

body.sx-body {
  font-family: var(--sx-font-ui);
  background: var(--sx-bg);
  color: var(--sx-ink);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body.sx-body--home {
  background-color: var(--sx-bg);
}

body.sx-body--home::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 100% 0%, rgba(14, 165, 233, 0.14) 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 0% 20%, rgba(37, 99, 235, 0.10) 0%, transparent 50%),
    linear-gradient(180deg, rgba(240, 247, 255, 0.88) 0%, rgba(240, 247, 255, 0.96) 45%, var(--sx-bg) 100%),
    url('../images/home-bg.jpg') center 15% / cover no-repeat;
  z-index: -1;
  pointer-events: none;
}

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

a { color: inherit; }

.sx-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.sx-card-link:focus-visible {
  outline: 3px solid var(--sx-accent);
  outline-offset: 2px;
}

/* —— Top bar —— */
.sx-topbar {
  position: relative;
  z-index: 200;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  color: var(--sx-ink);
  border-bottom: 1px solid var(--sx-border);
  box-shadow: var(--sx-shadow-sm);
}

.sx-topbar__row {
  max-width: var(--sx-max);
  margin: 0 auto;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.sx-brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  margin-right: auto;
}

.sx-brand__name {
  font-family: var(--sx-font-ui);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--sx-cobalt);
}

.sx-topbar__meta {
  max-width: var(--sx-max);
  margin: 0 auto;
  padding: 0.35rem 1.25rem 0.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--sx-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--sx-muted);
  border-top: 1px solid var(--sx-border);
  background: rgba(224, 242, 254, 0.45);
}

.sx-topbar__label { color: var(--sx-accent); font-weight: 600; }

.sx-menu-btn {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--sx-border-strong);
  border-radius: 10px;
  background: var(--sx-highlight);
  cursor: pointer;
}

.sx-menu-btn__lines {
  display: block;
  width: 1rem;
  height: 2px;
  background: var(--sx-ink);
  margin: 0 auto;
  box-shadow: 0 6px 0 var(--sx-ink), 0 -6px 0 var(--sx-ink);
}

.sx-nav {
  display: flex;
  gap: 0.15rem 1.25rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.sx-nav a {
  text-decoration: none;
  color: var(--sx-muted);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.sx-nav a:hover,
.sx-nav a[aria-current="page"] {
  color: var(--sx-cobalt);
  border-bottom-color: var(--sx-accent);
}

.sx-search {
  display: flex;
  align-items: stretch;
  background: var(--sx-surface);
  border: 1px solid var(--sx-border-strong);
  border-radius: 999px;
  min-width: 180px;
  overflow: hidden;
}

.sx-search input {
  border: none;
  background: transparent;
  color: var(--sx-ink);
  flex: 1;
  padding: 0.4rem 0.85rem;
  font-family: var(--sx-font-mono);
  font-size: 0.78rem;
  outline: none;
  min-width: 0;
}

.sx-search input::placeholder { color: var(--sx-muted); }

.sx-search button {
  border: none;
  background: linear-gradient(135deg, var(--sx-accent), var(--sx-cobalt));
  color: #fff;
  padding: 0 0.85rem;
  font-family: var(--sx-font-mono);
  font-weight: 700;
  cursor: pointer;
}

/* —— Flash ticker —— */
.sx-flash {
  display: flex;
  background: linear-gradient(90deg, #E0F2FE 0%, #F0F9FF 50%, #E0F2FE 100%);
  border-bottom: 1px solid var(--sx-border);
  font-family: var(--sx-font-mono);
  font-size: 0.75rem;
  overflow: hidden;
}

.sx-flash__tag {
  flex-shrink: 0;
  padding: 0.45rem 0.85rem;
  background: linear-gradient(135deg, var(--sx-accent), var(--sx-cobalt));
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.sx-flash__viewport { flex: 1; overflow: hidden; }

.sx-flash__track {
  display: flex;
  gap: 2.5rem;
  white-space: nowrap;
  padding: 0.45rem 0;
  animation: sx-scroll 45s linear infinite;
}

.sx-flash__item strong {
  color: var(--sx-cobalt);
  margin-right: 0.5rem;
  font-weight: 600;
}

@keyframes sx-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* —— Main —— */
.sx-main {
  max-width: var(--sx-max);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

/* —— Shared article card tokens —— */
.sx-tag-pill {
  display: inline-block;
  font-family: var(--sx-font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sx-cobalt);
  background: rgba(224, 242, 254, 0.95);
  border: 1px solid var(--sx-border);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  margin-bottom: 0.45rem;
}

.sx-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.75rem;
  font-family: var(--sx-font-mono);
  font-size: 0.65rem;
  color: var(--sx-muted);
}

.sx-card-meta time { opacity: 0.85; }

.sx-card-link:hover .sx-card__media img,
.sx-card-link:hover .sx-hero-card__visual img,
.sx-card-link:hover .sx-spotlight-card__visual img,
.sx-card-link:hover .sx-digest-card__thumb img,
.sx-card-link:hover .sx-queue-card__thumb img,
.sx-card-link:hover .sx-mini-card__thumb img {
  transform: scale(1.04);
}

/* —— Hero featured card —— */
.sx-hero-stage { margin-bottom: 2rem; }

.sx-hero-stage .sx-card-link { display: block; }

.sx-hero-card {
  background: var(--sx-surface);
  border-radius: calc(var(--sx-radius) + 4px);
  overflow: hidden;
  box-shadow: var(--sx-shadow);
  border: 1px solid var(--sx-border);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.sx-card-link:hover .sx-hero-card {
  transform: translateY(-3px);
  box-shadow: 0 20px 50px rgba(14, 116, 178, 0.18);
}

.sx-hero-card__visual {
  position: relative;
  aspect-ratio: 21/9;
  max-height: 440px;
  overflow: hidden;
}

.sx-hero-card__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.sx-hero-card__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 25%, rgba(15, 23, 42, 0.82) 100%);
  pointer-events: none;
}

.sx-hero-card__badge {
  position: absolute;
  top: 1.1rem;
  left: 1.1rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  font-family: var(--sx-font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sx-cobalt);
  box-shadow: var(--sx-shadow-sm);
}

.sx-hero-card__overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1.5rem 1.5rem 1.35rem;
  color: #fff;
}

.sx-hero-card__overlay .sx-tag-pill {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  color: #fff;
  backdrop-filter: blur(6px);
}

.sx-hero-card__title {
  font-family: var(--sx-font-display);
  font-size: clamp(1.5rem, 3.8vw, 2.35rem);
  line-height: 1.12;
  font-weight: 700;
  margin: 0.35rem 0 0.65rem;
  max-width: 18em;
}

.sx-hero-card__overlay .sx-card-meta {
  color: rgba(255, 255, 255, 0.82);
}

.sx-hero-card__body {
  padding: 1.25rem 1.5rem 1.5rem;
  background: linear-gradient(180deg, #fff 0%, #F8FBFF 100%);
}

.sx-hero-card__dek {
  color: var(--sx-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
  max-width: 52em;
}

.sx-hero-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--sx-cobalt);
}

.sx-hero-card__cta span { transition: transform 0.2s; }

.sx-card-link:hover .sx-hero-card__cta span { transform: translateX(4px); }

/* —— Dashboard —— */
.sx-dashboard {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(280px, 0.85fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.sx-block-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
  margin-bottom: 1rem;
}

.sx-block-head__code {
  font-family: var(--sx-font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--sx-accent), var(--sx-cobalt));
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
}

.sx-block-head__title {
  font-family: var(--sx-font-ui);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--sx-ink);
}

.sx-block-head--invert {
  background: transparent;
  border: none;
  padding: 0;
  margin-bottom: 1rem;
}

.sx-block-head--invert .sx-block-head__sub {
  width: 100%;
  font-size: 0.88rem;
  color: var(--sx-muted);
  margin-top: 0.2rem;
}

.sx-block-head__link {
  margin-left: auto;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--sx-cobalt);
  text-decoration: none;
}

.sx-block-head__link:hover { text-decoration: underline; }

/* Priority feed — 3-column card grid */
.sx-feed-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.sx-card {
  background: var(--sx-surface);
  border-radius: var(--sx-radius);
  overflow: hidden;
  border: 1px solid var(--sx-border);
  box-shadow: var(--sx-shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.sx-card .sx-card-link {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.sx-card-link:hover > .sx-card,
.sx-card:has(.sx-card-link:hover) {
  transform: translateY(-4px);
  box-shadow: var(--sx-shadow);
}

.sx-card__media {
  position: relative;
  overflow: hidden;
  background: var(--sx-highlight);
}

.sx-card--vertical .sx-card__media { aspect-ratio: 4/3; }

.sx-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.sx-card__body { padding: 1rem 1.05rem 1.15rem; }

.sx-card__title {
  font-family: var(--sx-font-display);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.32;
  margin: 0.15rem 0 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sx-card__excerpt {
  font-size: 0.82rem;
  color: var(--sx-muted);
  line-height: 1.5;
  margin-bottom: 0.65rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sx-card__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 35%, rgba(15, 23, 42, 0.75) 100%);
  pointer-events: none;
}

.sx-card__overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.85rem;
  color: #fff;
}

.sx-card__overlay .sx-tag-pill {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.sx-card__overlay .sx-card__title {
  font-size: 0.88rem;
  margin-bottom: 0.35rem;
  -webkit-line-clamp: 2;
}

.sx-card__overlay .sx-card-meta { color: rgba(255, 255, 255, 0.8); }

/* Digest aside card */
.sx-digest-card {
  background: var(--sx-surface);
  border-radius: var(--sx-radius);
  border: 1px solid var(--sx-border);
  box-shadow: var(--sx-shadow-sm);
  padding: 1rem;
  margin-bottom: 1rem;
}

.sx-digest-card__label {
  font-family: var(--sx-font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sx-accent);
  margin-bottom: 0.75rem;
}

.sx-digest-card__inner {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 0.85rem;
  align-items: start;
}

.sx-digest-card__thumb {
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 1;
}

.sx-digest-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.sx-digest-card__title {
  font-family: var(--sx-font-display);
  font-size: 0.92rem;
  line-height: 1.35;
  font-weight: 700;
  margin: 0.15rem 0 0.45rem;
}

.sx-digest-card__link {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--sx-cobalt);
}

/* Wire overlay card */
.sx-wire-stack { margin-bottom: 1rem; }

.sx-card--overlay .sx-card__media { aspect-ratio: 16/11; }

.sx-card-link > .sx-card--overlay { transition: transform 0.22s ease, box-shadow 0.22s ease; }

.sx-card-link:hover > .sx-card--overlay {
  transform: translateY(-4px);
  box-shadow: var(--sx-shadow);
}

/* Timeline */
.sx-timeline {
  background: var(--sx-surface);
  border-radius: var(--sx-radius);
  border: 1px solid var(--sx-border);
  padding: 1rem;
  box-shadow: var(--sx-shadow-sm);
}

.sx-timeline__head {
  font-family: var(--sx-font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sx-muted);
  margin-bottom: 0.75rem;
}

.sx-timeline__list { list-style: none; }

.sx-timeline__item { position: relative; }

.sx-timeline__item .sx-card-link {
  display: grid;
  grid-template-columns: 12px 1fr;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--sx-border);
  align-items: start;
}

.sx-timeline__item:last-child .sx-card-link { border-bottom: none; }

.sx-timeline__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sx-accent), var(--sx-cobalt));
  margin-top: 0.35rem;
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.sx-timeline__content time {
  display: block;
  font-family: var(--sx-font-mono);
  font-size: 0.6rem;
  color: var(--sx-accent);
  margin-bottom: 0.15rem;
}

.sx-timeline__title {
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--sx-ink);
}

.sx-timeline__item .sx-card-link:hover .sx-timeline__title { color: var(--sx-cobalt); }

/* Editor board — mosaic grid */
.sx-board { margin-bottom: 2.5rem; }

.sx-board-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-rows: minmax(0, auto);
  gap: 1rem;
}

.sx-card--board .sx-card__media { aspect-ratio: 16/10; }

.sx-card--feature {
  grid-column: span 2;
  grid-row: span 2;
}

.sx-card--feature .sx-card__media { aspect-ratio: 16/11; min-height: 280px; }

.sx-card--feature .sx-card__title {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  -webkit-line-clamp: 3;
}

/* Rolling tape carousel */
.sx-carousel-block { margin-bottom: 2.5rem; }

.sx-carousel {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0.5rem 0.25rem 0.75rem;
  margin: 0 -0.25rem;
  scrollbar-width: thin;
}

.sx-carousel__track {
  display: flex;
  gap: 1rem;
  padding: 0.25rem;
}

.sx-card--tape {
  flex: 0 0 260px;
  scroll-snap-align: start;
}

.sx-card--tape .sx-card__media { aspect-ratio: 3/4; }

.sx-card--tape .sx-card__overlay .sx-card__title {
  font-size: 0.85rem;
}

/* Spotlight long read */
.sx-spotlight { margin-bottom: 2.5rem; }

.sx-spotlight .sx-card-link { display: block; }

.sx-spotlight-card {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  background: var(--sx-surface);
  border-radius: calc(var(--sx-radius) + 2px);
  overflow: hidden;
  border: 1px solid var(--sx-border);
  box-shadow: var(--sx-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.sx-card-link:hover .sx-spotlight-card {
  transform: translateY(-3px);
  box-shadow: 0 22px 55px rgba(14, 116, 178, 0.16);
}

.sx-spotlight-card__visual {
  position: relative;
  min-height: 320px;
  overflow: hidden;
}

.sx-spotlight-card__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.sx-spotlight-card__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.08), transparent 50%);
}

.sx-spotlight-card__panel {
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: linear-gradient(160deg, #F8FBFF 0%, #E0F2FE 100%);
}

.sx-spotlight-card__label {
  font-family: var(--sx-font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sx-accent);
  margin-bottom: 0.5rem;
}

.sx-spotlight-card__title {
  font-family: var(--sx-font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.65rem);
  line-height: 1.2;
  font-weight: 700;
  margin: 0.35rem 0 0.75rem;
}

.sx-spotlight-card__dek {
  font-size: 0.92rem;
  color: var(--sx-muted);
  line-height: 1.6;
  margin-bottom: 0.85rem;
}

.sx-spotlight-card__cta {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--sx-accent), var(--sx-cobalt));
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  width: fit-content;
}

/* Split panels */
.sx-split-panels {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.sx-panel {
  background: var(--sx-surface);
  border-radius: var(--sx-radius);
  border: 1px solid var(--sx-border);
  padding: 1.15rem;
  box-shadow: var(--sx-shadow-sm);
}

.sx-panel--dark {
  background: linear-gradient(160deg, #F0FDFA 0%, #ECFEFF 100%);
  border-color: #99F6E4;
}

.sx-panel__head {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--sx-border);
}

.sx-panel__index {
  font-family: var(--sx-font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--sx-accent);
}

.sx-panel__head h2 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--sx-ink);
}

/* Analysis queue cards */
.sx-queue { list-style: none; }

.sx-queue-card + .sx-queue-card { margin-top: 0.65rem; }

.sx-queue-card .sx-card-link {
  display: grid;
  grid-template-columns: 2rem 64px 1fr;
  gap: 0.75rem;
  align-items: center;
  padding: 0.65rem;
  background: var(--sx-bg);
  border-radius: 12px;
  border: 1px solid transparent;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.sx-queue-card .sx-card-link:hover {
  background: #fff;
  border-color: var(--sx-border);
  transform: translateX(4px);
}

.sx-queue-card__num {
  font-family: var(--sx-font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--sx-cobalt);
}

.sx-queue-card__thumb {
  width: 64px;
  height: 64px;
  border-radius: 10px;
  overflow: hidden;
}

.sx-queue-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.sx-queue-card__body h3 {
  font-family: var(--sx-font-ui);
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.32;
  margin: 0.15rem 0 0.35rem;
}

/* Deep stack mini cards */
.sx-mini-card + .sx-mini-card { margin-top: 0.55rem; }

.sx-mini-card .sx-card-link {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  padding: 0.55rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(153, 246, 228, 0.6);
  transition: background 0.2s, transform 0.2s;
}

.sx-mini-card .sx-card-link:hover {
  background: #fff;
  transform: translateX(3px);
}

.sx-mini-card__thumb {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 10px;
  overflow: hidden;
}

.sx-mini-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.sx-mini-card__body h3 {
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.3;
}

/* Start matrix */
.sx-matrix { margin-bottom: 2rem; }

.sx-matrix-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.sx-starter-card {
  position: relative;
  background: var(--sx-surface);
  border-radius: var(--sx-radius);
  border: 1px solid var(--sx-border);
  padding: 1.25rem 1rem 1.1rem;
  min-height: 180px;
  box-shadow: var(--sx-shadow-sm);
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.sx-starter-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--sx-accent), var(--sx-cobalt));
}

.sx-starter-card.sx-card--mint::before {
  background: linear-gradient(90deg, #2DD4BF, #14B8A6);
}

.sx-starter-card.sx-card--sky::before {
  background: linear-gradient(90deg, #38BDF8, #2563EB);
}

.sx-starter-card.sx-card--lemon::before {
  background: linear-gradient(90deg, #FACC15, #F59E0B);
}

.sx-starter-card:has(.sx-card-link:hover),
.sx-starter-card:hover {
  box-shadow: var(--sx-shadow);
  transform: translateY(-3px);
}

.sx-starter-card__num {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  font-family: var(--sx-font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: rgba(30, 58, 95, 0.1);
}

.sx-starter-card h3 {
  font-family: var(--sx-font-display);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.32;
  margin: 0.35rem 0 0.45rem;
  padding-right: 1.5rem;
}

.sx-starter-card__excerpt {
  font-size: 0.78rem;
  color: var(--sx-muted);
  line-height: 1.45;
  margin-bottom: 0.65rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* —— Search panel —— */
.sx-search-panel {
  max-width: var(--sx-max);
  margin: 1rem auto;
  padding: 0 1.25rem;
}

.sx-search-hit {
  border-radius: var(--sx-radius);
  border: 1px solid var(--sx-border);
  background: var(--sx-surface);
  margin-bottom: 0.75rem;
  overflow: hidden;
  box-shadow: var(--sx-shadow-sm);
}

.sx-search-hit .sx-card-link {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 1rem;
  padding: 0.75rem;
}

.sx-search-hit__thumb {
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 1;
}

.sx-search-hit__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sx-search-hit__body h3 {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.3;
  margin: 0.2rem 0 0.4rem;
}

.sx-flash__dot {
  opacity: 0.35;
  margin: 0 0.5rem;
  color: var(--sx-accent);
}

.sx-empty {
  text-align: center;
  padding: 2rem;
  font-family: var(--sx-font-mono);
  color: var(--sx-muted);
}

/* —— Footer —— */
.sx-footer {
  border-top: 1px solid var(--sx-border);
  background: linear-gradient(180deg, var(--sx-surface) 0%, #F0F9FF 100%);
  margin-top: 2rem;
}

.sx-footer__grid {
  max-width: var(--sx-max);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 2rem;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
}

.sx-footer__brand {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.sx-footer__logo {
  border: 1px solid var(--sx-border-strong);
  border-radius: 12px;
  padding: 2px;
  background: var(--sx-highlight);
}

.sx-footer__name {
  font-family: var(--sx-font-ui);
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.35rem;
}

.sx-footer__tagline {
  font-size: 0.875rem;
  color: var(--sx-muted);
  line-height: 1.5;
}

.sx-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.sx-footer__col h3 {
  font-family: var(--sx-font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sx-accent);
  margin-bottom: 0.65rem;
}

.sx-footer__col ul { list-style: none; }

.sx-footer__col a {
  text-decoration: none;
  font-size: 0.85rem;
  color: var(--sx-ink);
  display: block;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
}

.sx-footer__col a:hover {
  border-bottom-color: var(--sx-accent);
}

.sx-footer__bar {
  border-top: 1px solid var(--sx-border);
  background: linear-gradient(90deg, #E0F2FE 0%, #F0F9FF 50%, #E0F2FE 100%);
  color: var(--sx-muted);
  padding: 0.85rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  font-family: var(--sx-font-mono);
  font-size: 0.68rem;
}

.sx-footer__note { opacity: 0.65; }

/* —— Responsive —— */
@media (max-width: 1024px) {
  .sx-dashboard { grid-template-columns: 1fr; }
  .sx-feed-list { grid-template-columns: 1fr; }
  .sx-board-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sx-card--feature { grid-column: span 2; grid-row: span 1; }
  .sx-spotlight-card { grid-template-columns: 1fr; }
  .sx-spotlight-card__visual { min-height: 220px; }
  .sx-split-panels { grid-template-columns: 1fr; }
  .sx-matrix-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  /* Mobile: fit viewport width, no horizontal page scroll */
  html,
  body.sx-body {
    overflow-x: clip;
    width: 100%;
    max-width: 100%;
  }

  body.sx-body--home {
    --sx-mobile-gap: 0.85rem;
    --sx-mobile-screen: min(100dvh, 100vh);
    --sx-mobile-pad: max(0.85rem, env(safe-area-inset-left, 0px));
  }

  .sx-topbar,
  .sx-flash,
  .sx-main,
  .sx-footer {
    max-width: 100%;
  }

  .sx-menu-btn { display: block; }
  .sx-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    padding: 0.75rem 0;
    border-top: 1px solid var(--sx-border);
  }
  .sx-nav.is-open { display: flex; }

  .sx-topbar__row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand menu"
      "search search";
    align-items: center;
    padding: 0.5rem var(--sx-mobile-pad);
    gap: 0.55rem;
  }

  .sx-brand {
    grid-area: brand;
    margin-right: 0;
    min-width: 0;
  }

  .sx-brand__name {
    font-size: 1rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .sx-menu-btn { grid-area: menu; flex-shrink: 0; }

  .sx-search {
    grid-area: search;
    width: 100%;
    min-width: 0;
    order: unset;
  }

  .sx-topbar__meta {
    padding: 0.35rem var(--sx-mobile-pad) 0.45rem;
    font-size: 0.62rem;
    gap: 0.5rem;
  }

  .sx-topbar__date {
    flex-shrink: 0;
    white-space: nowrap;
  }

  .sx-flash { font-size: 0.68rem; }
  .sx-flash__tag { padding: 0.35rem 0.65rem; }

  .sx-main {
    width: 100%;
    max-width: 100%;
    padding: 0.65rem var(--sx-mobile-pad) calc(1rem + env(safe-area-inset-bottom, 0px));
    box-sizing: border-box;
  }

  .sx-main > *,
  .sx-dashboard,
  .sx-dashboard__primary,
  .sx-dashboard__aside,
  .sx-hero-stage,
  .sx-board,
  .sx-carousel-block,
  .sx-spotlight,
  .sx-split-panels,
  .sx-matrix {
    min-width: 0;
    max-width: 100%;
  }

  .sx-main > .sx-ad-slot {
    display: flex;
    justify-content: flex-end;
    align-items: flex-start;
    width: 100vw;
    max-width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    min-height: 50px;
    box-sizing: border-box;
    overflow: hidden;
  }

  .sx-main > .sx-ad-slot > * {
    max-width: 100%;
    flex-shrink: 0;
  }

  .sx-ad-bridge {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    pointer-events: none;
  }

  .sx-main > .sx-ad-slot:first-of-type {
    margin-top: 0.35rem;
    margin-bottom: 0.5rem;
  }

  .sx-main > .sx-ad-slot:not(:first-of-type) {
    margin-top: 0.75rem;
    margin-bottom: 0.5rem;
  }

  .sx-hero-stage { margin-bottom: var(--sx-mobile-gap); }

  body.sx-view-mobile .sx-main > .sx-hero-stage {
    margin-bottom: 0.5rem;
  }

  body.sx-view-mobile .sx-hero-card__visual {
    aspect-ratio: auto;
    max-height: none;
    height: calc(2 * var(--sx-mobile-screen) - 9rem);
    min-height: calc(2 * var(--sx-mobile-screen) - 9rem);
  }

  body.sx-view-mobile .sx-main > .sx-ad-slot:nth-of-type(2) {
    margin-top: 0.35rem;
  }

  .sx-hero-card,
  .sx-card,
  .sx-digest-card,
  .sx-spotlight-card,
  .sx-panel,
  .sx-starter-card {
    width: 100%;
    max-width: 100%;
  }

  .sx-hero-card__visual {
    aspect-ratio: 16 / 10;
    max-height: min(46dvh, 360px);
  }

  .sx-hero-card__body { display: none; }

  .sx-hero-card__overlay {
    padding: 0.85rem 1rem;
    right: 0;
    left: 0;
  }

  .sx-hero-card__title {
    font-size: clamp(1rem, 4.8vw, 1.25rem);
    max-width: 100%;
    margin: 0.25rem 0 0.45rem;
    -webkit-line-clamp: 3;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word;
  }

  .sx-hero-card__badge {
    top: 0.65rem;
    left: 0.65rem;
    font-size: 0.58rem;
    padding: 0.25rem 0.55rem;
  }

  .sx-card-meta { flex-wrap: wrap; }

  /* Screen 2: feed + digest — full-width stack */
  .sx-dashboard {
    grid-template-columns: 1fr;
    gap: var(--sx-mobile-gap);
    margin-bottom: var(--sx-mobile-gap);
  }

  .sx-block-head { margin-bottom: 0.55rem; }
  .sx-block-head__title { font-size: 0.92rem; }
  .sx-block-head__sub { display: none; }

  .sx-feed-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.65rem;
    overflow: visible;
    margin: 0;
    padding: 0;
    width: 100%;
  }

  .sx-feed-list .sx-card {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .sx-card--vertical .sx-card__media { aspect-ratio: 16 / 10; }

  .sx-card__body { padding: 0.75rem 0.85rem 0.85rem; }

  .sx-card__title {
    font-size: 0.88rem;
    -webkit-line-clamp: 2;
    word-break: break-word;
  }

  .sx-dashboard__aside .sx-wire-stack,
  .sx-dashboard__aside .sx-timeline { display: none; }

  .sx-digest-card {
    padding: 0.75rem;
    margin-bottom: 0;
    box-sizing: border-box;
  }

  .sx-digest-card__inner {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 0.65rem;
  }

  .sx-digest-card__copy { min-width: 0; }

  .sx-digest-card__title {
    font-size: 0.84rem;
    word-break: break-word;
  }

  .sx-digest-card__link { font-size: 0.7rem; margin-top: 0.35rem; }

  /* Screen 3: board */
  .sx-board {
    margin-bottom: var(--sx-mobile-gap);
    max-height: none;
  }

  .sx-board-grid {
    grid-template-columns: 1fr;
    gap: 0.65rem;
    width: 100%;
  }

  .sx-card--feature { grid-column: span 1; grid-row: span 1; }

  .sx-card--feature .sx-card__media {
    min-height: 0;
    aspect-ratio: 16 / 10;
    max-height: min(32dvh, 260px);
  }

  .sx-card--board .sx-card__media { aspect-ratio: 16 / 9; }

  .sx-card--board:not(.sx-card--feature) .sx-card__excerpt { display: none; }

  .sx-card--feature .sx-card__excerpt {
    -webkit-line-clamp: 2;
    margin-bottom: 0.45rem;
  }

  /* Screen 4: carousel — contained horizontal scroll */
  .sx-carousel-block {
    margin-bottom: var(--sx-mobile-gap);
    max-height: none;
    overflow: hidden;
  }

  .sx-carousel {
    width: 100%;
    max-width: 100%;
    padding: 0.25rem 0;
    margin: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .sx-carousel::-webkit-scrollbar { display: none; }

  .sx-carousel__track {
    display: flex;
    gap: 0.65rem;
    width: max-content;
    max-width: none;
    padding-right: 0.25rem;
  }

  .sx-card--tape {
    flex: 0 0 clamp(140px, 42vw, 200px);
    scroll-snap-align: start;
  }

  .sx-card--tape .sx-card__media {
    aspect-ratio: 3 / 4;
    max-height: min(34dvh, 240px);
  }

  /* Screen 5: spotlight + queue */
  .sx-spotlight { margin-bottom: var(--sx-mobile-gap); }

  .sx-spotlight-card {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
  }

  .sx-spotlight-card__visual {
    min-height: 0;
    aspect-ratio: 16 / 10;
    max-height: min(28dvh, 220px);
  }

  .sx-spotlight-card__panel {
    padding: 0.85rem 1rem 1rem;
    min-width: 0;
  }

  .sx-spotlight-card__title {
    font-size: clamp(0.95rem, 4.2vw, 1.05rem);
    margin: 0.25rem 0 0.45rem;
    word-break: break-word;
  }

  .sx-spotlight-card__dek {
    font-size: 0.82rem;
    margin-bottom: 0.55rem;
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .sx-spotlight-card__cta {
    margin-top: 0.25rem;
    padding: 0.4rem 0.85rem;
    font-size: 0.72rem;
  }

  .sx-split-panels {
    grid-template-columns: 1fr;
    gap: var(--sx-mobile-gap);
    margin-bottom: var(--sx-mobile-gap);
  }

  .sx-panel--dark { display: none; }

  .sx-panel { padding: 0.85rem; box-sizing: border-box; }

  .sx-panel__head {
    margin-bottom: 0.55rem;
    padding-bottom: 0.45rem;
  }

  .sx-queue-card .sx-card-link {
    grid-template-columns: 1.5rem minmax(0, 1fr);
    padding: 0.5rem 0.45rem;
    min-width: 0;
  }

  .sx-queue-card__thumb { display: none; }

  .sx-queue-card__body {
    min-width: 0;
  }

  .sx-queue-card__body h3 {
    font-size: 0.8rem;
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word;
  }

  .sx-card-meta { font-size: 0.58rem; }

  /* Screen 6: matrix + footer */
  .sx-matrix { margin-bottom: 0.5rem; overflow: hidden; }

  .sx-matrix-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.65rem;
    overflow: visible;
    width: 100%;
  }

  .sx-starter-card {
    width: 100%;
    min-height: 0;
    padding: 0.85rem 0.75rem 0.75rem;
    box-sizing: border-box;
  }

  .sx-starter-card__excerpt { -webkit-line-clamp: 1; margin-bottom: 0.4rem; }

  .sx-starter-card h3 {
    font-size: 0.84rem;
    word-break: break-word;
  }

  .sx-footer {
    margin-top: 0.75rem;
    width: 100%;
  }

  .sx-footer__grid {
    grid-template-columns: 1fr;
    padding: 1.15rem var(--sx-mobile-pad) 0.85rem;
    gap: 0.85rem;
  }

  .sx-footer__brand { gap: 0.65rem; min-width: 0; }

  .sx-footer__name { font-size: 0.95rem; }

  .sx-footer__tagline { font-size: 0.78rem; }

  .sx-footer__nav {
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
  }

  .sx-footer__col h3 { margin-bottom: 0.4rem; }

  .sx-footer__col a { font-size: 0.78rem; }

  .sx-footer__bar {
    padding: 0.55rem var(--sx-mobile-pad);
    font-size: 0.62rem;
    flex-wrap: wrap;
  }
}

@media (max-width: 560px) {
  .sx-footer__nav { grid-template-columns: 1fr; }
  .sx-card--tape { flex-basis: clamp(130px, 46vw, 180px); }
}

@media (prefers-reduced-motion: reduce) {
  .sx-flash__track { animation: none; }
}