.diag-hero{
  padding: 90px 20px 30px;
  background: linear-gradient(135deg,var(--blue-deep),var(--blue-mid));
  color: var(--text-light);
}
.diag-hero.iso{ background: linear-gradient(135deg,#071425,#0b1730); }
.diag-hero h1{ margin:0 0 8px; font-size: clamp(28px, 3.1vw, 42px); }
.diag-hero p{ margin:0; opacity:.92; max-width: 900px; }

.diag-content{ padding: 30px 20px 80px; background:transparent; }

.diag-top{
  display:flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.diag-chip{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.03);
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(2,6,23,0.6);
}
.diag-chip strong{ color: var(--cyan); }

.diag-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.diag-card{
  background: linear-gradient(180deg,var(--card),#061425);
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.03);
  box-shadow: 0 12px 36px rgba(2,6,23,0.6);
  overflow:hidden;
}

.diag-media{ position:relative; height: 150px; background: linear-gradient(180deg,#051026,#081427); }
.diag-media img{
  position:absolute; inset:0;
  width:100%; height:100%; object-fit:cover;
  opacity:0; transition: opacity .5s ease;
}
.diag-media img.is-active{ opacity:1; }

.diag-body{ padding: 14px 16px 16px; }
.diag-title{ font-weight:800; margin: 0 0 6px; color: var(--text-light); }
.diag-desc{ margin: 0 0 12px; color: var(--muted); font-size: 13px; line-height:1.5; }

.diag-actions{ display:flex; gap:10px; flex-wrap:wrap; }
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.04);
  background: rgba(255,255,255,0.02);
  font-weight:800;
  text-decoration:none;
  color:#e6f7ff;
  cursor:pointer;
}
.btn.primary{ background: var(--gradient-primary); color:#071022; border-color: transparent; }
.btn:hover{ transform: translateY(-1px); }

/* Subscription gate */
.gate{
  position: fixed;
  inset: 0;
  background: rgba(2,6,23,.75);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  display:none;
  align-items:center;
  justify-content:center;
  padding: 20px;
  z-index: 9999;
}
.gate.is-visible{ display:flex; }
.gate-card{
  width: min(560px, 100%);
  background: linear-gradient(180deg,#071026,#061425);
  border-radius: 22px;
  box-shadow: 0 26px 80px rgba(2,6,23,.7);
  border: 1px solid rgba(255,255,255,0.03);
  padding: 22px;
}
.gate-card h2{ margin:0 0 8px; }
.gate-card p{ margin:0 0 16px; color: rgba(17,24,39,.7); }
.gate-actions{ display:flex; gap: 12px; flex-wrap:wrap; }

/* Device diagnostics layout */
.diag-layout{
  display:grid;
  grid-template-columns: 320px 1fr;
  gap: 18px;
}
.diag-sidebar{
  background: linear-gradient(180deg,#071225,#061425);
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.03);
  box-shadow: 0 12px 36px rgba(2,6,23,0.6);
  padding: 16px;
  height: fit-content;
}
.diag-sidebar h3{ margin:0 0 12px; }
.device-tabs{ display:flex; flex-wrap:wrap; gap:10px; }
.tab{
  border: 1px solid rgba(255,255,255,0.04);
  background: rgba(255,255,255,0.02);
  border-radius: 999px;
  padding: 10px 14px;
  font-weight:800;
  cursor:pointer;
}
.tab.is-active{ background: linear-gradient(90deg,#06b6d4,#8b5cf6); color:#071022; border-color: transparent; }

.diag-mini{
  margin-top: 14px;
  border-radius: 14px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.03);
  padding: 14px;
}
.mini-title{ font-weight:800; margin-bottom:6px; color:#e6f7ff }
.mini-text{ margin:0 0 10px; color: #98a4af; font-size:13px; line-height:1.5; }
.mini-link{ color:#06b6d4; font-weight:800; text-decoration:none; }
.mini-link:hover{ text-decoration:underline; }

.diag-card-top{
  display:flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  border-bottom: 1px solid rgba(17,24,39,.06);
}
.kicker{ font-size:12px; letter-spacing:.12em; text-transform:uppercase; color: rgba(17,24,39,.55); font-weight:800; }
.pill{
  display:inline-flex;
  align-items:center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(11,95,255,.10);
  color: var(--blue-bright);
  font-weight:900;
  border: 1px solid rgba(11,95,255,.18);
  white-space:nowrap;
}

/* Shared v-card (slider) */
.vcard{
  margin: 16px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.03);
  overflow:hidden;
  display:grid;
  grid-template-columns: 200px 1fr;
  background: linear-gradient(180deg,#071225,#061427);
}
.vcard-media{ position:relative; min-height: 170px; background: linear-gradient(180deg,#051026,#081427); }
.slide{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; opacity:0; transition: opacity .55s ease; }
.slide.is-active{ opacity:1; }
.vcard-body{ padding: 14px 16px; }
.vcard-kicker{ font-size:12px; letter-spacing:.12em; text-transform:uppercase; color: rgba(17,24,39,.55); font-weight:800; }
.vcard-title{ font-weight:900; margin: 4px 0 6px; }
.vcard-text{ color: rgba(17,24,39,.65); font-size: 13px; line-height:1.5; }
.rotate-words{ color:var(--blue-bright); }

.checklist{ padding: 0 16px 16px; }
.check{ display:flex; align-items:center; gap:12px; padding: 10px 0; border-bottom: 1px solid rgba(17,24,39,.06); }
.check input{ width: 18px; height: 18px; }
.notes{ margin-top: 12px; }
.notes label{ display:block; font-weight:800; margin-bottom:6px; }
.notes textarea{ width:100%; border-radius: 14px; border: 1px solid rgba(17,24,39,.14); padding: 10px 12px; font-family: inherit; }
.actions{ display:flex; gap: 10px; margin-top: 12px; }

/* ISO page */
.diag-panel{
  background:#fff;
  border-radius: 18px;
  border: 1px solid rgba(17,24,39,.08);
  box-shadow: 0 12px 30px rgba(0,0,0,.06);
  padding: 16px;
}
.diag-row{ display:grid; gap:6px; margin: 10px 0; }
.diag-row label{ font-weight:800; }
.diag-row select{ border-radius: 12px; border: 1px solid rgba(17,24,39,.14); padding: 10px 12px; font-family: inherit; }
.diag-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--gradient-primary);
  color:#fff;
  font-weight:900;
  cursor:pointer;
}
.hint{ color: rgba(17,24,39,.65); font-size: 13px; line-height:1.5; }
.diag-results .result{ border: 1px solid rgba(17,24,39,.10); border-radius: 14px; padding: 12px; margin-bottom: 10px; }
.diag-results .empty{ color: rgba(17,24,39,.55); }

@media (max-width: 980px){
  .diag-layout{ grid-template-columns: 1fr; }
}
@media (max-width: 520px){
  .vcard{ grid-template-columns: 1fr; }
  .actions{ flex-direction:column; }
}