/* Global Signals Articles — feed shell (Sprint 1) */

.gsa-page {
  min-height: 100vh;
}

.gsa-main {
  width: min(920px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 6.5rem 0 calc(3rem + env(safe-area-inset-bottom, 0px));
  min-height: 70vh;
}

.gsa-hub-head {
  margin-bottom: 1.75rem;
  animation: gs-rise 700ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.gsa-hub-head h1 {
  margin: 0.35rem 0 0.75rem;
  font-size: clamp(1.9rem, 4.5vw, 2.6rem);
  letter-spacing: -0.03em;
  color: #f4f7fc;
  font-weight: 650;
}

.gsa-hub-desc {
  margin: 0 0 1.1rem;
  max-width: 40rem;
  color: #9aa8bd;
  line-height: 1.55;
  font-size: 1.02rem;
}

.gsa-hub-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 0;
}

.gsa-feed {
  margin-top: 0.5rem;
  padding: 1.25rem 1.1rem;
  border: 1px dashed rgba(148, 163, 184, 0.28);
  border-radius: 14px;
  background:
    radial-gradient(520px 180px at 8% 0%, rgba(125, 211, 167, 0.06), transparent 60%),
    rgba(14, 22, 38, 0.55);
  min-height: 10rem;
}

.gsa-feed[data-gsa-state="empty"] {
  display: grid;
  place-items: center;
  text-align: center;
}

.gsa-empty {
  margin: 0;
  max-width: 28rem;
  color: #9aa8bd;
  line-height: 1.55;
  font-size: 1rem;
}

.gs-top nav a[aria-current="page"] {
  color: #7dd3a7;
}

@media (max-width: 40rem) {
  .gsa-main {
    padding-top: 5.75rem;
  }

  .gsa-feed {
    padding: 1.1rem 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .gsa-hub-head {
    animation: none;
  }
}

/* Article cards (Prompt 2) */
.gsa-feed[data-gsa-state="ready"],
.gsa-feed[data-gsa-state="loading"],
.gsa-feed[data-gsa-state="error"] {
  display: block;
  text-align: left;
  border-style: solid;
  border-color: rgba(148, 163, 184, 0.18);
}

.gsa-banner {
  margin: 0 0 1.1rem;
  padding: 0.85rem 0.95rem;
  border-radius: 12px;
  border: 1px solid rgba(94, 234, 212, 0.28);
  background: rgba(15, 28, 40, 0.75);
}

.gsa-banner p {
  margin: 0.35rem 0 0;
  color: #9aa8bd;
  line-height: 1.5;
  font-size: 0.95rem;
}

.gsa-banner .gsa-badge {
  margin-bottom: 0.25rem;
  border-color: rgba(94, 234, 212, 0.45);
  color: #5eead4;
}

.gsa-hub-count {
  margin: 0 0 1rem;
  color: #7a8aa3;
  font-size: 0.9rem;
}

.gsa-list {
  display: grid;
  gap: 1rem;
}

.gsa-card {
  padding: 1rem 1.05rem 1.1rem;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 14px;
  background: rgba(11, 18, 32, 0.85);
}

.gsa-card__meta {
  margin: 0 0 0.55rem;
}

.gsa-badge {
  display: inline-block;
  margin: 0 0.35rem 0.35rem 0;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: #9aa8bd;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.gsa-card__title {
  margin: 0 0 0.45rem;
  font-size: clamp(1.15rem, 2.8vw, 1.35rem);
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: #f0f4fa;
  font-weight: 600;
}

.gsa-card__byline {
  margin: 0 0 0.85rem;
  color: #9aa8bd;
  font-size: 0.92rem;
}

.gsa-card__source {
  color: #7dd3a7;
  text-decoration: none;
}

.gsa-card__source:hover,
.gsa-card__source:focus-visible {
  text-decoration: underline;
  outline: none;
}

.gsa-card__facts h3 {
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7a8aa3;
  font-weight: 600;
}

.gsa-card__facts p {
  margin: 0;
  color: #c5d0e0;
  line-height: 1.55;
  font-size: 0.98rem;
}

.gsa-loading,
.gsa-error {
  margin: 0;
  color: #9aa8bd;
  line-height: 1.5;
}

@media (max-width: 40rem) {
  .gsa-card {
    padding: 0.9rem 0.85rem 1rem;
  }
}

/* Waypoint's Take (Prompt 3) — visually separate from factual summary */
.gsa-note {
  margin: 0 0 0.45rem;
  color: #7a8aa3;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.gsa-card__facts {
  padding-bottom: 0.85rem;
  margin-bottom: 0.85rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
}

.gsa-card__take {
  padding: 0.85rem 0.9rem;
  border-radius: 12px;
  border: 1px solid rgba(125, 211, 167, 0.22);
  background: rgba(125, 211, 167, 0.05);
}

.gsa-card__take h3 {
  margin: 0 0 0.25rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7dd3a7;
  font-weight: 650;
}

.gsa-card__take p {
  margin: 0 0 0.55rem;
  color: #c5d0e0;
  line-height: 1.55;
  font-size: 0.95rem;
}

.gsa-card__take p:last-child {
  margin-bottom: 0;
}

.gsa-card__take--empty {
  border-style: dashed;
  border-color: rgba(148, 163, 184, 0.28);
  background: transparent;
}

.gsa-card__take--empty p {
  color: #9aa8bd;
}

/* Impact metadata + confidence (Prompt 4) */
.gsa-card__impact {
  margin-top: 0.9rem;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
}

.gsa-badge--confidence[data-confidence="Observed"] {
  border-color: rgba(125, 211, 167, 0.55);
  color: #7dd3a7;
}

.gsa-badge--confidence[data-confidence="High"] {
  border-color: rgba(96, 165, 250, 0.5);
  color: #93c5fd;
}

.gsa-badge--confidence[data-confidence="Medium"] {
  border-color: rgba(251, 191, 36, 0.45);
  color: #fbbf24;
}

.gsa-badge--confidence[data-confidence="Low"],
.gsa-badge--confidence[data-confidence="Unknown"] {
  border-color: rgba(148, 163, 184, 0.4);
  color: #9aa8bd;
}

.gsa-meta-row {
  margin: 0.55rem 0 0;
}

.gsa-meta-row h4 {
  margin: 0 0 0.3rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7a8aa3;
  font-weight: 600;
}

.gsa-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.gsa-chips li {
  padding: 0.18rem 0.5rem;
  border-radius: 8px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  background: rgba(14, 22, 38, 0.8);
  color: #c5d0e0;
  font-size: 0.82rem;
  line-height: 1.3;
}

.gsa-empty-inline {
  margin: 0;
  color: #7a8aa3;
  font-size: 0.88rem;
}

/* Likely impact path + detail (Prompt 5) */
.gsa-path-preview {
  margin: 0.75rem 0 0;
  color: #7a8aa3;
  font-size: 0.88rem;
  line-height: 1.45;
}

.gsa-card__cta {
  margin: 0.85rem 0 0;
}

.gsa-card__cta a {
  color: #7dd3a7;
  text-decoration: none;
  font-weight: 500;
}

.gsa-card__cta a:hover,
.gsa-card__cta a:focus-visible {
  text-decoration: underline;
  outline: none;
}

.gsa-path {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.35rem;
}

.gsa-path__step {
  margin: 0;
}

.gsa-path__node {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 12px;
  background: rgba(11, 18, 32, 0.9);
}

.gsa-path__label {
  font-weight: 600;
  color: #f0f4fa;
  margin-right: 0.25rem;
}

.gsa-path__explain {
  margin: 0.35rem 0 0.15rem 0.75rem;
  color: #9aa8bd;
  font-size: 0.9rem;
  line-height: 1.45;
}

.gsa-path__arrow {
  display: block;
  text-align: center;
  color: #5eead4;
  font-size: 1rem;
  line-height: 1;
  margin: 0.1rem 0;
}

.gsa-detail h1 {
  margin: 0.35rem 0 0.55rem;
  font-size: clamp(1.45rem, 3.5vw, 2rem);
  letter-spacing: -0.03em;
  color: #f4f7fc;
}

.gsa-detail__byline {
  margin: 0 0 1.25rem;
  color: #9aa8bd;
}

.gsa-section {
  margin: 0 0 1.35rem;
}

.gsa-section h2 {
  margin: 0 0 0.45rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7dd3a7;
  font-weight: 650;
}

.gsa-section > p {
  margin: 0 0 0.55rem;
  color: #c5d0e0;
  line-height: 1.55;
}

.gsa-detail__back {
  margin: 1.5rem 0 0;
}

.gsa-detail__back a {
  color: #7dd3a7;
  text-decoration: none;
}

.gsa-detail__back a:hover,
.gsa-detail__back a:focus-visible {
  text-decoration: underline;
  outline: none;
}

.gsa-feed[data-gsa-state="detail"] {
  display: block;
  text-align: left;
}