/* ── Header ─────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 14px 24px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
}

.header-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.logo {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-green);
}

.tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--color-slate);
  text-transform: uppercase;
}

.header-right {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-end;
  text-align: right;
}

.mission-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
}

.header-stats {
  font-size: 10px;
  color: var(--color-slate);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.text-warning { color: var(--color-warning); }

/* ── Dashboard Grid ─────────────────────────────────── */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1px;
  background-color: var(--color-border);
  min-height: calc(100vh - 80px);
}

.main-feed {
  background: var(--color-base);
  padding: 24px;
}

.side-column {
  background: var(--color-base);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

/* ── Panel ──────────────────────────────────────────── */
.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.side-column .panel {
  margin-bottom: 0;
  border-radius: 0;
  border-left: none;
  border-right: none;
}
.side-column .panel:first-child { border-top: none; }
.side-column .panel:last-child  { border-bottom: none; }

.panel-header {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-slate);
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.panel-body { padding: 16px; }

/* ── Modal ──────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  backdrop-filter: blur(4px);
}

.modal-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

/* ── Task 11: Mobile Responsiveness ─────────────────── */
@media (max-width: 768px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: 0;
    background-color: transparent;
  }

  .site-header {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 12px 16px;
  }

  .header-right {
    align-items: flex-start;
    text-align: left;
  }

  /* Search full-width on mobile */
  .search-bar { width: 100%; }
  .search-input { width: 100%; }

  .main-feed {
    padding: 12px;
  }

  /* Side panels stack as cards below the feed */
  .side-column {
    flex-direction: column;
    gap: 0;
    background: transparent;
    padding: 0 12px 12px;
  }

  .side-column .panel {
    border-left: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: 8px;
  }

  .side-column .panel:first-child { border-top: 1px solid var(--color-border); }
  .side-column .panel:last-child  { border-bottom: 1px solid var(--color-border); }

  /* Modal */
  .modal-overlay { padding: 12px; align-items: flex-end; }

  .modal-content {
    padding: 20px;
    max-height: 95vh;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    border-bottom: none;
  }

  .briefing-headline { font-size: 15px; margin-bottom: 16px; }

  .briefing-actions { flex-wrap: wrap; gap: 8px; }

  .card-headline { font-size: 14px; }

  /* Task 14: Hide globe on mobile (consistent with task 11 requirements) */
  .globe-container { display: none !important; }

  /* Header stats wrap on small screens */
  .header-stats { font-size: 9px; line-height: 1.6; }
}

@media (max-width: 480px) {
  .logo    { font-size: 15px; }
  .tagline { font-size: 9px; }
  .main-feed { padding: 8px; }
  .signal-card { padding: 12px; }
}