/* =========================================================
   signal.css
   SecureLynx / Substrate Field Signals

   Corporate-first article styling with lightweight Substrate
   viewer treatment. This file should not replace the main
   corporate CSS stack; it only styles signal pages and their
   embedded viewer state.
   ========================================================= */

.signal-page-main {
  padding-top: 118px;
}

.signal-article {
  position: relative;
  overflow: visible;
}

.signal-article::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 12% 10%, rgba(0, 230, 255, 0.12), transparent 34%),
    radial-gradient(circle at 85% 20%, rgba(57, 255, 20, 0.08), transparent 28%);
  pointer-events: none;
}

.signal-hero {
  position: relative;
  padding: clamp(70px, 9vw, 130px) 0 clamp(44px, 6vw, 86px);
  border-bottom: 1px solid rgba(0, 230, 255, 0.12);
}

.signal-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: clamp(32px, 6vw, 78px);
  align-items: end;
}

.signal-hero h1 {
  max-width: 980px;
  margin-top: 18px;
  font-size: clamp(3.1rem, 7vw, 7rem);
  line-height: 0.92;
  letter-spacing: -0.065em;
}

.signal-label {
  color: var(--cyan);
}

.signal-deck {
  max-width: 780px;
  margin-top: 24px;
  color: var(--text-secondary);
  font-size: clamp(1.02rem, 1.55vw, 1.28rem);
  line-height: 1.7;
}

.signal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.signal-intel-card {
  display: grid;
  gap: 0;
  border: 1px solid rgba(0, 230, 255, 0.2);
  border-radius: var(--radius-md);
  background: rgba(5, 7, 13, 0.62);
  box-shadow: var(--glow-cyan-soft);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  overflow: hidden;
}

.signal-intel-card div {
  padding: 20px 22px;
}

.signal-intel-card div + div {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.signal-intel-card span {
  display: block;
  margin-bottom: 8px;
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.signal-intel-card strong {
  display: block;
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.35;
}

.signal-content-shell {
  display: grid;
  grid-template-columns: minmax(0, 820px) 340px;
  gap: clamp(34px, 6vw, 82px);
  align-items: start;
  padding-top: clamp(48px, 7vw, 92px);
  padding-bottom: clamp(64px, 8vw, 112px);
  overflow: visible;
}

.signal-content {
  display: grid;
  gap: clamp(34px, 5vw, 58px);
}

.signal-content section {
  scroll-margin-top: 130px;
}

.signal-content h2,
.signal-sidebar h2 {
  margin-bottom: 16px;
  font-size: clamp(1.6rem, 2.7vw, 2.55rem);
  letter-spacing: -0.045em;
}

.signal-content p,
.signal-content li,
.signal-sidebar p {
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.8;
}

.signal-content ul,
.signal-content ol {
  margin: 18px 0 0;
  padding-left: 1.2rem;
}

.signal-content li + li {
  margin-top: 10px;
}

.signal-summary-card,
.signal-securelynx-note,
.signal-sidebar-card {
  border: 1px solid rgba(0, 230, 255, 0.16);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.012));
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.18);
}

.signal-summary-card,
.signal-securelynx-note {
  padding: clamp(24px, 4vw, 38px);
}

.signal-summary-card .label,
.signal-securelynx-note .label {
  margin-bottom: 14px;
}

.signal-securelynx-note {
  border-color: rgba(57, 255, 20, 0.22);
}

.signal-securelynx-note h2 {
  color: var(--text-primary);
}

.signal-sidebar {
  position: relative;
  min-height: 100%;
}

.signal-sidebar-card {
  position: fixed;
  top: 128px;
  right: max(32px, calc((100vw - 1180px) / 2));
  width: 340px;
  padding: 28px;
  z-index: 20;
}

.signal-sidebar-card img {
  width: 74px;
  height: 74px;
  margin-bottom: 26px;
  opacity: 0.88;
  filter: drop-shadow(0 0 18px rgba(0, 230, 255, 0.26));
}

.signal-sidebar-card p {
  margin-bottom: 24px;
  font-size: 0.94rem;
}

/* Substrate viewer mode.
   Use this when a signal is loaded inside the Substrate environment. */
.signal-viewer,
.viewer-content {
  width: 100%;
  min-height: 100%;
}

.signal-viewer .signal-page-main,
.viewer-content .signal-page-main {
  padding-top: 0;
}

.signal-viewer .signal-article,
.viewer-content .signal-article {
  min-height: 100%;
  background: rgba(5, 7, 13, 0.86);
}

.signal-viewer .signal-hero,
.viewer-content .signal-hero {
  padding-top: 40px;
}

.signal-viewer .signal-actions,
.viewer-content .signal-actions,
.signal-viewer .signal-sidebar,
.viewer-content .signal-sidebar {
  display: none;
}

.signal-viewer .signal-hero-grid,
.viewer-content .signal-hero-grid,
.signal-viewer .signal-content-shell,
.viewer-content .signal-content-shell {
  grid-template-columns: 1fr;
}

.signal-viewer .signal-content-shell,
.viewer-content .signal-content-shell {
  padding-top: 36px;
  padding-bottom: 48px;
}

@media (max-width: 1050px) {
  .signal-page-main {
    padding-top: 146px;
  }

  .signal-hero-grid,
  .signal-content-shell {
    grid-template-columns: 1fr;
  }

  .signal-intel-card {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .signal-intel-card div + div {
    border-top: none;
  }

  .signal-intel-card div:nth-child(n + 3) {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .signal-intel-card div:nth-child(even) {
    border-left: 1px solid rgba(255, 255, 255, 0.08);
  }

  .signal-sidebar-card {
    position: static;
  }
}

@media (max-width: 720px) {
  .signal-page-main {
    padding-top: 164px;
  }

  .signal-hero {
    padding-top: 48px;
  }

  .signal-hero h1 {
    font-size: clamp(2.7rem, 15vw, 4.2rem);
    letter-spacing: -0.07em;
  }

  .signal-actions .btn {
    width: 100%;
  }

  .signal-intel-card {
    grid-template-columns: 1fr;
  }

  .signal-intel-card div,
  .signal-intel-card div:nth-child(even) {
    border-left: none;
  }

  .signal-intel-card div + div,
  .signal-intel-card div:nth-child(n + 3) {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .signal-summary-card,
  .signal-securelynx-note,
  .signal-sidebar-card {
    padding: 22px;
  }
}