/* =========================================================
   SAAI INFOGRAPHIC STYLESHEET — SCOPED VERSION
   Safe for Django base.html with shared header/nav/footer
   ========================================================= */

.saai-infographic {
  --saai-bg: #f6f9fc;
  --saai-surface: #ffffff;
  --saai-surface-soft: #f2f7ff;
  --saai-surface-muted: #eef3f8;
  --saai-text: #10233f;
  --saai-text-soft: #54657f;
  --saai-text-faint: #7b8ba3;
  --saai-border: #d9e3ef;
  --saai-border-strong: #c5d3e3;

  --saai-primary: #1f6feb;
  --saai-primary-soft: #eaf2ff;
  --saai-primary-strong: #174ea6;

  --saai-accent: #0ea5a4;
  --saai-accent-soft: #e7fbfb;
  --saai-accent-strong: #0f766e;

  --saai-success: #16a34a;
  --saai-success-soft: #ecfdf3;
  --saai-success-strong: #166534;

  --saai-warning: #f59e0b;
  --saai-warning-soft: #fff6e8;
  --saai-warning-strong: #b45309;

  --saai-danger: #dc2626;
  --saai-danger-soft: #fef2f2;
  --saai-danger-strong: #991b1b;

  --saai-info: #0284c7;
  --saai-info-soft: #eff8ff;
  --saai-info-strong: #075985;

  --saai-code-bg: #0b1120;
  --saai-code-surface: #111827;
  --saai-code-text: #dbeafe;
  --saai-code-muted: #9fb4d9;

  --saai-radius-sm: 12px;
  --saai-radius-md: 18px;
  --saai-radius-lg: 24px;
  --saai-radius-xl: 30px;
  --saai-radius-pill: 999px;

  --saai-shadow-sm: 0 6px 16px rgba(16, 35, 63, 0.06);
  --saai-shadow-md: 0 12px 30px rgba(16, 35, 63, 0.08);
  --saai-shadow-lg: 0 24px 60px rgba(16, 35, 63, 0.12);

  --saai-container: 1200px;

  --saai-space-2: 8px;
  --saai-space-3: 12px;
  --saai-space-4: 16px;
  --saai-space-5: 20px;
  --saai-space-6: 24px;
  --saai-space-7: 32px;
  --saai-space-8: 40px;
  --saai-space-9: 56px;
  --saai-space-10: 72px;

  --saai-font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --saai-font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  color: var(--saai-text);
  font-family: var(--saai-font-sans);
  line-height: 1.6;
}

/* reset only inside infographic */
.saai-infographic *,
.saai-infographic *::before,
.saai-infographic *::after {
  box-sizing: border-box;
}

.saai-infographic img,
.saai-infographic svg,
.saai-infographic video,
.saai-infographic canvas {
  max-width: 100%;
  display: block;
}

.saai-infographic a {
  color: var(--saai-primary);
  text-decoration: none;
}

.saai-infographic a:hover {
  color: var(--saai-primary-strong);
}

.saai-infographic h1,
.saai-infographic h2,
.saai-infographic h3,
.saai-infographic h4,
.saai-infographic h5,
.saai-infographic h6 {
  margin: 0 0 var(--saai-space-4);
  color: var(--saai-text);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.saai-infographic h1 {
  font-size: clamp(2.1rem, 4vw, 3.6rem);
}

.saai-infographic h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.3rem);
}

.saai-infographic h3 {
  font-size: clamp(1.2rem, 2vw, 1.45rem);
}

.saai-infographic p {
  margin: 0 0 var(--saai-space-4);
  color: var(--saai-text-soft);
}

.saai-infographic code,
.saai-infographic pre,
.saai-infographic .inline-code,
.saai-infographic .mini-code {
  font-family: var(--saai-font-mono);
}

.saai-infographic .container {
  width: min(var(--saai-container), 100%);
  margin-inline: auto;
}

.saai-infographic .section {
  padding: var(--saai-space-7) 0;
}

.saai-infographic .section-hero {
  padding: var(--saai-space-9) 0 var(--saai-space-7);
}

.saai-infographic .section-head {
  margin-bottom: var(--saai-space-6);
}

.saai-infographic .stack-md > * + * {
  margin-top: var(--saai-space-4);
}

.saai-infographic .stack-lg > * + * {
  margin-top: var(--saai-space-6);
}

.saai-infographic .grid-2,
.saai-infographic .grid-3,
.saai-infographic .grid-4,
.saai-infographic .grid-split {
  display: grid;
  gap: var(--saai-space-5);
}

.saai-infographic .grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.saai-infographic .grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.saai-infographic .grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.saai-infographic .grid-split {
  grid-template-columns: 1.2fr 0.8fr;
}

.saai-infographic .flex-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: var(--saai-space-3);
}

.saai-infographic .card,
.saai-infographic .panel,
.saai-infographic .surface {
  background: var(--saai-surface);
  border: 1px solid var(--saai-border);
  border-radius: var(--saai-radius-md);
  box-shadow: var(--saai-shadow-md);
  padding: var(--saai-space-6);
}

.saai-infographic .card-soft {
  background: var(--saai-surface-soft);
  border: 1px solid #d8e6ff;
  border-radius: var(--saai-radius-md);
  box-shadow: var(--saai-shadow-sm);
  padding: var(--saai-space-6);
}

.saai-infographic .card-hero {
  position: relative;
  overflow: hidden;
  padding: var(--saai-space-8);
  border-radius: var(--saai-radius-xl);
  background: linear-gradient(135deg, #ffffff 0%, #f4f8ff 58%, #edfcfb 100%);
  border: 1px solid rgba(255,255,255,0.85);
  box-shadow: var(--saai-shadow-lg);
}

.saai-infographic .card-hero::after {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  right: -90px;
  bottom: -90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31,111,235,0.14), transparent 65%);
}

.saai-infographic .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--saai-space-2);
  padding: 8px 12px;
  border-radius: var(--saai-radius-pill);
  background: var(--saai-primary-soft);
  color: var(--saai-primary);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin-bottom: var(--saai-space-4);
}

.saai-infographic .lead {
  font-size: 1.1rem;
  color: var(--saai-text-soft);
}

.saai-infographic .hero-kpis {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--saai-space-4);
  margin-top: var(--saai-space-6);
}

.saai-infographic .kpi {
  background: rgba(255,255,255,0.88);
  border: 1px solid var(--saai-border);
  border-radius: 18px;
  padding: 16px;
}

.saai-infographic .kpi-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--saai-text-faint);
  margin-bottom: 6px;
}

.saai-infographic .kpi-value {
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--saai-text);
}

.saai-infographic .kpi-note {
  font-size: 0.9rem;
  color: var(--saai-text-soft);
  margin-top: 6px;
}

.saai-infographic .badge,
.saai-infographic .pill,
.saai-infographic .tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: var(--saai-radius-pill);
  border: 1px solid var(--saai-border);
  background: #fff;
  color: var(--saai-text);
  font-size: 0.88rem;
  font-weight: 700;
}

.saai-infographic .badge-primary,
.saai-infographic .pill-primary {
  background: var(--saai-primary-soft);
  border-color: #cfe0ff;
  color: var(--saai-primary);
}

.saai-infographic .badge-accent,
.saai-infographic .pill-accent {
  background: var(--saai-accent-soft);
  border-color: #c9f3f2;
  color: var(--saai-accent-strong);
}

.saai-infographic .badge-success,
.saai-infographic .pill-success {
  background: var(--saai-success-soft);
  border-color: #c9f1d8;
  color: var(--saai-success-strong);
}

.saai-infographic .badge-warning,
.saai-infographic .pill-warning {
  background: var(--saai-warning-soft);
  border-color: #fde7b6;
  color: var(--saai-warning-strong);
}

.saai-infographic .sticky-nav {
  position: sticky;
  top: 10px;
  z-index: 10;
}

.saai-infographic .nav-shell {
  display: flex;
  flex-wrap: wrap;
  gap: var(--saai-space-3);
  padding: 12px;
  border-radius: 18px;
  background: rgba(255,255,255,0.86);
  border: 1px solid rgba(217,227,239,0.9);
  backdrop-filter: blur(10px);
  box-shadow: var(--saai-shadow-md);
}

.saai-infographic .nav-shell a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: var(--saai-radius-pill);
  border: 1px solid var(--saai-border);
  background: #fff;
  color: var(--saai-text);
  font-size: 0.93rem;
  font-weight: 700;
}

.saai-infographic .nav-shell a:hover,
.saai-infographic .nav-shell a.active {
  background: var(--saai-primary-soft);
  border-color: #d7e6ff;
  color: var(--saai-primary);
}

.saai-infographic .code-card {
  overflow: hidden;
  padding: 0;
  border-radius: var(--saai-radius-md);
}

.saai-infographic .code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: var(--saai-code-surface);
  color: #e5eefc;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.saai-infographic .copy-btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  border-radius: 10px;
  background: var(--saai-primary);
  color: #fff;
  font: inherit;
  font-weight: 800;
  padding: 9px 12px;
}

.saai-infographic pre,
.saai-infographic .code-block {
  margin: 0;
  padding: 18px;
  overflow: auto;
  background: var(--saai-code-bg);
  color: var(--saai-code-text);
  font: 0.95rem/1.65 var(--saai-font-mono);
  white-space: pre-wrap;
  word-break: break-word;
}

.saai-infographic .inline-code,
.saai-infographic .mini-code {
  display: inline-block;
  background: #edf4ff;
  border: 1px solid #d7e6ff;
  color: #0f3b80;
  padding: 4px 8px;
  border-radius: 8px;
  font-size: 0.92rem;
}

.saai-infographic .explain-grid {
  display: grid;
  gap: var(--saai-space-4);
}

.saai-infographic .explain-triplet {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--saai-space-4);
}

.saai-infographic .explain-item {
  background: linear-gradient(180deg, #fff, #fbfdff);
  border: 1px solid var(--saai-border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--saai-shadow-sm);
}

.saai-infographic .checklist,
.saai-infographic .feature-list,
.saai-infographic .clean-list,
.saai-infographic .resource-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.saai-infographic .checklist {
  display: grid;
  gap: 12px;
}

.saai-infographic .checklist li,
.saai-infographic .feature-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.saai-infographic .feature-list li {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--saai-border);
  background: #f9fbff;
}

.saai-infographic .checkmark,
.saai-infographic .icon-bullet {
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--saai-success-soft);
  color: var(--saai-success);
  font-weight: 900;
  margin-top: 2px;
}

.saai-infographic .alert,
.saai-infographic .callout {
  border-radius: 16px;
  padding: 16px 18px;
  border: 1px solid var(--saai-border);
  background: #fff;
}

.saai-infographic .alert-info {
  background: var(--saai-info-soft);
  border-color: #cfe9ff;
  color: var(--saai-info-strong);
}

.saai-infographic .alert-success {
  background: var(--saai-success-soft);
  border-color: #c9f1d8;
  color: var(--saai-success-strong);
}

.saai-infographic .resource-list {
  display: grid;
  gap: var(--saai-space-4);
}

.saai-infographic .resource-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--saai-border);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--saai-shadow-sm);
}

.saai-infographic .resource-icon {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--saai-primary-soft);
  color: var(--saai-primary);
  font-weight: 900;
}

.saai-infographic .resource-meta {
  color: var(--saai-text-faint);
  font-size: 0.9rem;
}

.saai-infographic .text-center {
  text-align: center;
}

.saai-infographic .mb-0 {
  margin-bottom: 0;
}

.saai-infographic .mb-sm {
  margin-bottom: var(--saai-space-3);
}

.saai-infographic .lesson-footer {
  margin: var(--saai-space-8) 0 var(--saai-space-9);
  text-align: center;
  color: var(--saai-text-faint);
  font-size: 0.95rem;
}

@media (max-width: 1100px) {
  .saai-infographic .hero-kpis {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .saai-infographic .grid-2,
  .saai-infographic .grid-3,
  .saai-infographic .grid-4,
  .saai-infographic .grid-split,
  .saai-infographic .explain-triplet {
    grid-template-columns: 1fr;
  }

  .saai-infographic .hero-kpis {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .saai-infographic .card,
  .saai-infographic .panel,
  .saai-infographic .surface,
  .saai-infographic .card-soft,
  .saai-infographic .alert,
  .saai-infographic .callout,
  .saai-infographic .resource-card {
    padding: 18px;
    border-radius: 16px;
  }

  .saai-infographic .card-hero {
    padding: 22px 18px;
    border-radius: 20px;
  }

  .saai-infographic .code-head,
  .saai-infographic .nav-shell {
    flex-direction: column;
    align-items: flex-start;
  }

  .saai-infographic pre {
    font-size: 0.88rem;
  }
}