:root {
  --navy-950: #061326;
  --navy-900: #001f4d;
  --navy-800: #002855;
  --navy-700: #0b3b75;
  --navy-50: #f0f5fa;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --surface: #ffffff;

  /* Semantic Status Tokens */
  --amber-bg: #fffbeb;
  --amber-border: #f59e0b;
  --amber-text: #92400e;
  --emerald-bg: #ecfdf5;
  --emerald-border: #10b981;
  --emerald-text: #065f46;
  --neutral-bg: #f1f5f9;
  --neutral-border: #94a3b8;
  --neutral-text: #334155;
  --danger-bg: #fef2f2;
  --danger-border: #ef4444;
  --danger-text: #991b1b;

  --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 6px -1px rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(0, 31, 77, 0.07), 0 4px 10px -3px rgba(0, 31, 77, 0.04);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--slate-50);
  color: var(--slate-900);
  line-height: 1.55;
  min-height: 100vh;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Subtle engineering blueprint grid background */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(15, 23, 42, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 85% 65% at 50% 0%, #000 50%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 85% 65% at 50% 0%, #000 50%, transparent 100%);
}

.mono-text,
.mono-input {
  font-family: var(--font-mono);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* TOPBAR */
.topbar {
  background: var(--navy-950);
  color: #ffffff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  padding: 13px 0;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #ffffff;
  text-decoration: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--navy-700), var(--navy-800));
  border: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #93c5fd;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.brand-dot {
  color: #60a5fa;
  font-family: var(--font-mono);
  font-weight: 500;
}

.brand-sub {
  font-size: 0.74rem;
  color: var(--slate-400);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.advisory-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 11px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: #e2e8f0;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #f59e0b;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.22);
}

.lang-switch {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 2px;
  border-radius: var(--radius-sm);
}

.lang-btn {
  background: transparent;
  color: var(--slate-300);
  border: none;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.lang-btn.active {
  background: #ffffff;
  color: var(--navy-950);
}

/* MAIN LAYOUT */
.main-content {
  padding-top: 36px;
  padding-bottom: 64px;
}

/* ASYMMETRIC INTRO BAR */
.intro-bar {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 28px;
  align-items: center;
  margin-bottom: 28px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--navy-700);
  background: var(--navy-50);
  border: 1px solid #cfe0f5;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.intro-copy h1 {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--slate-900);
  letter-spacing: -0.025em;
  line-height: 1.22;
  margin-bottom: 10px;
}

.hero-sub {
  color: var(--slate-600);
  font-size: 0.96rem;
  line-height: 1.6;
}

/* PATCH THRESHOLD MATRIX */
.patch-matrix {
  background: var(--surface);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-xs);
}

.matrix-header {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--slate-600);
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--slate-100);
}

.matrix-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.matrix-cell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.branch-lbl {
  color: var(--slate-500);
  font-weight: 500;
}

.patch-val {
  color: var(--navy-800);
  font-weight: 600;
}

/* SEGMENTED MODE SWITCHER */
.segmented-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  background: var(--slate-200);
  padding: 5px;
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
}

.seg-btn {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 13px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--slate-600);
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: var(--font-sans);
}

.seg-btn i {
  font-size: 1.45rem;
  color: var(--slate-500);
  flex-shrink: 0;
}

.seg-btn:hover {
  color: var(--slate-900);
}

.seg-btn.active {
  background: var(--surface);
  color: var(--navy-900);
  border-color: rgba(15, 23, 42, 0.08);
  box-shadow: var(--shadow-sm);
}

.seg-btn.active i {
  color: var(--navy-800);
}

.seg-text {
  display: flex;
  flex-direction: column;
}

.seg-title {
  font-weight: 700;
  font-size: 0.94rem;
  line-height: 1.25;
}

.seg-desc {
  font-size: 0.78rem;
  color: var(--slate-500);
  margin-top: 2px;
}

/* SURFACE PANELS */
.surface-panel {
  background: var(--surface);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
}

/* SCANNER INPUT BAR */
.scanner-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.field-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--slate-800);
}

.method-tag {
  font-size: 0.74rem;
  color: var(--slate-500);
  background: var(--slate-100);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--slate-200);
}

.scanner-box {
  display: flex;
  align-items: stretch;
  border: 1.5px solid var(--slate-300);
  border-radius: var(--radius-md);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.scanner-box:focus-within {
  border-color: var(--navy-800);
  box-shadow: 0 0 0 4px rgba(0, 40, 85, 0.1);
}

.protocol-prefix {
  display: flex;
  align-items: center;
  padding: 0 14px;
  background: var(--slate-100);
  border-right: 1px solid var(--slate-200);
  color: var(--slate-500);
  font-size: 0.9rem;
  user-select: none;
}

.scanner-box input {
  flex: 1;
  border: none;
  padding: 15px 16px;
  font-size: 1rem;
  color: var(--slate-900);
  outline: none;
  min-width: 0;
}

.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--navy-800);
  color: #ffffff;
  border: none;
  padding: 13px 22px;
  font-family: var(--font-sans);
  font-size: 0.94rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.08s ease;
  white-space: nowrap;
}

.scanner-box .primary-btn {
  margin: 5px;
  border-radius: 7px;
}

.primary-btn:hover:not(:disabled) {
  background: var(--navy-900);
}

.primary-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.secondary-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--surface);
  color: var(--navy-800);
  border: 1px solid var(--slate-300);
  padding: 9px 15px;
  font-family: var(--font-sans);
  font-size: 0.86rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.secondary-btn:hover {
  border-color: var(--navy-800);
  background: var(--navy-50);
}

.scanner-footer {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--slate-100);
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--slate-600);
}

.trust-item i {
  color: var(--navy-700);
  font-size: 0.95rem;
}

/* SURVEY PANEL */
.survey-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 18px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--slate-200);
}

.survey-top h2 {
  font-size: 1.25rem;
  color: var(--slate-900);
  margin-bottom: 4px;
}

.survey-top p {
  font-size: 0.88rem;
  color: var(--slate-600);
}

.progress-box {
  min-width: 150px;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
}

.progress-meta {
  display: flex;
  justify-content: flex-end;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--navy-800);
  margin-bottom: 6px;
}

.progress-track {
  height: 6px;
  background: var(--slate-200);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--navy-800);
  transition: width 0.25s ease;
}

.survey-questions {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.question-block {
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 18px;
  background: var(--slate-50);
}

.question-title {
  font-weight: 600;
  color: var(--slate-900);
  margin-bottom: 12px;
  font-size: 0.94rem;
}

.options-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
}

/* Custom Basecoat/Shadcn-style Selectable Radio Cards */
.option-label {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 14px;
  background: var(--surface);
  border: 1.5px solid var(--slate-200);
  border-radius: 8px;
  font-size: 0.87rem;
  font-weight: 500;
  color: var(--slate-700);
  cursor: pointer;
  transition: all 0.14s ease;
}

.option-label:hover {
  border-color: var(--slate-400);
  color: var(--slate-900);
}

.option-label input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.option-check {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--slate-300);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: transparent;
  font-size: 0.72rem;
  transition: all 0.14s ease;
}

.option-label.selected {
  border-color: var(--navy-800);
  background: var(--navy-50);
  color: var(--navy-900);
  font-weight: 600;
  box-shadow: 0 0 0 1px var(--navy-800);
}

.option-label.selected .option-check {
  background: var(--navy-800);
  border-color: var(--navy-800);
  color: #ffffff;
}

.survey-actions {
  margin-top: 22px;
  display: flex;
  justify-content: flex-end;
}

.survey-actions .primary-btn {
  border-radius: var(--radius-sm);
}

/* RESULT DIAGNOSTIC CARD */
.result-wrapper {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.result-card {
  border-top: 4px solid var(--neutral-border);
}

.result-card.status-risk {
  border-top-color: var(--amber-border);
}

.result-card.status-ok {
  border-top-color: var(--emerald-border);
}

.result-card.status-unknown {
  border-top-color: var(--neutral-border);
}

.result-header-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-risk {
  background: var(--amber-bg);
  color: var(--amber-text);
  border: 1px solid var(--amber-border);
}

.badge-ok {
  background: var(--emerald-bg);
  color: var(--emerald-text);
  border: 1px solid var(--emerald-border);
}

.badge-unknown {
  background: var(--neutral-bg);
  color: var(--neutral-text);
  border: 1px solid var(--neutral-border);
}

.result-meta {
  font-size: 0.78rem;
  color: var(--slate-500);
}

.result-title {
  font-size: 1.35rem;
  color: var(--slate-900);
  letter-spacing: -0.015em;
  margin-bottom: 8px;
}

.result-summary {
  color: var(--slate-600);
  font-size: 0.94rem;
  margin-bottom: 18px;
}

.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
}

.detail-item {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.detail-item strong {
  display: block;
  color: var(--slate-500);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.detail-item span {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--slate-900);
}

.detail-item span.mono-val {
  font-family: var(--font-mono);
}

.switch-prompt {
  margin-top: 18px;
  padding: 14px 16px;
  background: var(--navy-50);
  border: 1px solid #cfe0f5;
  border-radius: var(--radius-sm);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.switch-prompt-text {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--navy-900);
  flex: 1;
}

.switch-prompt-text i {
  font-size: 1.25rem;
  color: var(--navy-800);
  flex-shrink: 0;
}

/* SPLIT B2B LEAD GENERATION PANEL */
.lead-panel {
  border: 1.5px solid var(--navy-800);
  background: linear-gradient(135deg, #ffffff 0%, #f4f8fc 100%);
}

.lead-split {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 32px;
  align-items: center;
}

.lead-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 700;
  color: var(--navy-800);
  margin-bottom: 8px;
}

.lead-info-col h3 {
  font-size: 1.35rem;
  color: var(--slate-900);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 10px;
}

.lead-desc {
  color: var(--slate-600);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.lead-perks {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.lead-perks li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--slate-700);
}

.lead-perks li i {
  color: var(--navy-800);
  font-size: 1.05rem;
  flex-shrink: 0;
}

.lead-form-col {
  background: var(--surface);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 13px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--slate-700);
  margin-bottom: 5px;
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-icon i {
  position: absolute;
  left: 12px;
  color: var(--slate-400);
  font-size: 1.05rem;
  pointer-events: none;
}

.input-with-icon input {
  width: 100%;
  padding: 10px 12px 10px 36px;
  border: 1.5px solid var(--slate-300);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--slate-900);
  outline: none;
  transition: border-color 0.14s ease, box-shadow 0.14s ease;
}

.input-with-icon input.mono-input {
  font-family: var(--font-mono);
  font-size: 0.86rem;
}

.input-with-icon input:focus {
  border-color: var(--navy-800);
  box-shadow: 0 0 0 3px rgba(0, 40, 85, 0.1);
}

.lead-submit-btn {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-top: 4px;
}

/* ALERTS */
.alert {
  margin-top: 12px;
  margin-bottom: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
}

.alert-error {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
}

.alert-success {
  background: var(--emerald-bg);
  border: 1px solid var(--emerald-border);
  color: var(--emerald-text);
}

/* ON-PAGE SEO SECTION */
.seo-section {
  margin-top: 44px;
  padding-top: 32px;
  border-top: 1px solid var(--slate-200);
}

.seo-header {
  margin-bottom: 18px;
}

.seo-kicker {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--navy-800);
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.seo-header h2 {
  font-size: 1.25rem;
  color: var(--slate-900);
  letter-spacing: -0.015em;
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.seo-card {
  background: var(--surface);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-xs);
}

.seo-card h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.94rem;
  color: var(--slate-900);
  margin-bottom: 8px;
}

.seo-card h3 i {
  font-size: 1.2rem;
  color: var(--navy-800);
  flex-shrink: 0;
}

.seo-card p {
  font-size: 0.84rem;
  color: var(--slate-600);
  line-height: 1.55;
}

/* FOOTER */
.footer-note {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--slate-200);
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--slate-500);
  font-size: 0.8rem;
}

.footer-inner i {
  font-size: 1.1rem;
  color: var(--slate-400);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-copy {
  margin-top: 14px;
  font-size: 0.76rem;
  color: var(--slate-400);
}

.hidden {
  display: none !important;
}

@media (max-width: 780px) {
  .intro-bar {
    grid-template-columns: 1fr;
  }
  .segmented-bar {
    grid-template-columns: 1fr;
  }
  .scanner-box {
    flex-direction: column;
  }
  .protocol-prefix {
    display: none;
  }
  .options-list {
    grid-template-columns: 1fr;
  }
  .lead-split {
    grid-template-columns: 1fr;
  }
  .seo-grid {
    grid-template-columns: 1fr;
  }
  .advisory-tag {
    display: none;
  }
}