/* Pressure course pages. Loaded after site.css so the course stays light and readable. */

.learn-page {
  background: #fff;
  color: #363636;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

.learn-page .container {
  width: min(1120px, calc(100% - 48px));
  padding-bottom: 72px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  background: #fff;
  color: #080808;
  padding: 8px 12px;
  z-index: 6;
}

.skip-link:focus {
  top: 8px;
}

.learn-page .site-header {
  display: grid;
  grid-template-columns: auto 1fr minmax(200px, 260px);
  grid-template-areas:
    "brand nav search"
    "note note note";
  align-items: center;
  gap: 8px 20px;
  margin: 0 0 8px;
  padding: 14px 0 12px;
  border: 0;
  border-bottom: 1px solid #d8d8d8;
  border-radius: 0;
  background: #fff;
  box-shadow: none;
  backdrop-filter: none;
  position: sticky;
  top: 0;
  z-index: 4;
}

.learn-page .brand {
  grid-area: brand;
  color: #080808;
}

.learn-page .brand-mark {
  background: #080808;
  border: 0;
  box-shadow: none;
}

.learn-page .brand-dot {
  background: #00d722;
  box-shadow: none;
}

.learn-page .brand-name {
  color: #080808;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.learn-page .brand-subtitle {
  color: #898989;
}

.learn-page .site-nav {
  grid-area: nav;
  justify-content: flex-end;
}

.learn-page .site-nav a {
  color: #080808;
  font-weight: 500;
}

.learn-page .site-nav a:hover {
  color: #006acc;
}

.nav-toggle {
  display: none;
  border: 1px solid #d8d8d8;
  background: #fff;
  color: #080808;
  border-radius: 4px;
  padding: 8px 12px;
  font: inherit;
  font-weight: 600;
}

.learn-search {
  grid-area: search;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.learn-search label,
.login-planned {
  color: #898989;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.learn-search input,
.calc-form input,
.calc-form select,
.mock-setup input,
.mock-setup select {
  border: 1px solid #d8d8d8;
  border-radius: 4px;
  padding: 10px 12px;
  font: inherit;
  color: #080808;
  background: #fff;
  width: 100%;
}

.learn-search input:focus,
.calc-form input:focus,
.calc-form select:focus,
.mock-setup input:focus,
.mock-setup select:focus {
  outline: 2px solid #006acc;
  outline-offset: 1px;
  border-color: #006acc;
}

.login-planned {
  grid-area: note;
  margin: 0;
  text-transform: none;
  letter-spacing: 0;
  font-size: 13px;
  color: #5a5a5a;
}

.learn-page .filter-row {
  position: sticky;
  top: 92px;
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
  padding: 12px 0;
  background: rgba(255, 255, 255, 0.94);
}

.learn-page .filter-row a,
.learn-page .filter-row button {
  display: inline-flex;
  align-items: center;
  border: 1px solid #d8d8d8;
  background: #fff;
  color: #080808;
  border-radius: 999px;
  padding: 6px 12px;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}

.learn-page .filter-row a[aria-current="page"],
.learn-page .filter-row button[aria-pressed="true"] {
  border-color: #080808;
  background: #080808;
  color: #fff;
}

.crumbs {
  margin: 0 0 20px;
  color: #5a5a5a;
  font-size: 14px;
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.crumbs li:not(:last-child)::after {
  content: "/";
  margin: 0 6px;
  color: #898989;
}

.crumbs a {
  color: #006acc;
  text-decoration: none;
}

.learn-page h1 {
  margin: 8px 0 12px;
  color: #080808;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  font-weight: 600;
}

.learn-page h2 {
  margin: 36px 0 14px;
  color: #080808;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  letter-spacing: -0.03em;
}

.learn-page h3 {
  margin: 0;
  color: #080808;
  font-size: 1.15rem;
  font-weight: 600;
}

.learn-hero {
  padding-bottom: 8px;
}

.lede,
.lesson-body p {
  max-width: 68ch;
  color: #363636;
  font-size: 1.05rem;
}

.learn-page .stat-row,
.learn-page .card-grid,
.learn-page .tool-grid {
  display: grid;
  gap: 16px;
  margin: 20px 0 8px;
}

.learn-page .stat-row {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.learn-page .card-grid,
.learn-page .tool-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.learn-page .learn-card,
.learn-page .stat-card,
.learn-page .question-card,
.learn-page .calc-form,
.learn-page .sim-panel {
  border: 1px solid #d8d8d8;
  border-radius: 8px;
  background: #fff;
  box-shadow: none;
  backdrop-filter: none;
  padding: 20px;
}

.learn-page .stat-card strong {
  display: block;
  margin-top: 8px;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  line-height: 1.2;
  letter-spacing: -0.04em;
  color: #080808;
  font-weight: 600;
}

.learn-page .card-grid .learn-card {
  border-top-width: 4px;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.learn-page .card-grid .learn-card:nth-child(5n + 1) { border-top-color: #7a3dff; }
.learn-page .card-grid .learn-card:nth-child(5n + 2) { border-top-color: #ed52cb; }
.learn-page .card-grid .learn-card:nth-child(5n + 3) { border-top-color: #3b89ff; }
.learn-page .card-grid .learn-card:nth-child(5n + 4) { border-top-color: #ff6b00; }
.learn-page .card-grid .learn-card:nth-child(5n + 5) { border-top-color: #00d722; }

.learn-page .learn-card h2,
.learn-page .learn-card h3,
.learn-page .question-card h2 {
  margin: 8px 0;
  font-size: 1.15rem;
  color: #080808;
}

.learn-page .learn-card p {
  color: #5a5a5a;
}

.learn-page .learn-card .text-link {
  margin-top: auto;
  padding-top: 12px;
  color: #006acc;
  font-weight: 600;
}

.meta {
  color: #5a5a5a;
  font-size: 14px;
}

.badge {
  display: inline-block;
  align-self: flex-start;
  border: 1px solid #d8d8d8;
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #363636;
  background: #fff;
}

.badge-ready {
  border-color: #0d6b2c;
  color: #0d6b2c;
}

.badge-partial,
.badge-planned {
  border-color: #8a5a00;
  color: #6b4300;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
}

.learn-page .actions a,
.learn-page .actions button,
.learn-page .calc-form button,
.learn-page .question-card button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 4px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid #080808;
  background: #080808;
  color: #fff;
  cursor: pointer;
}

.learn-page .actions a.secondary,
.learn-page .actions button.secondary,
.learn-page .question-card button.secondary {
  background: #fff;
  color: #080808;
}

.learn-page .actions a:hover,
.learn-page .actions button:hover,
.learn-page .calc-form button:hover,
.learn-page .question-card button:hover {
  opacity: 0.88;
}

.lesson-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid #d8d8d8;
}

.lesson-list li {
  border-bottom: 1px solid #d8d8d8;
}

.lesson-list a {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 4px;
  color: #080808;
  text-decoration: none;
  font-weight: 500;
}

.lesson-list a:hover {
  color: #006acc;
}

.formula {
  font-family: "Inconsolata", ui-monospace, monospace;
  background: #f6f6f6;
  border-left: 3px solid #006acc;
  padding: 12px 16px;
  overflow-wrap: anywhere;
}

.learn-page .safety,
.learn-page .planned-banner,
.learn-page main .note {
  border-radius: 8px;
  padding: 14px 16px;
  margin: 16px 0;
  box-shadow: none;
  backdrop-filter: none;
}

.learn-page .safety {
  background: #fff8e8;
  border: 1px solid #e6d3a1;
  border-left: 4px solid #ffae13;
}

.learn-page .planned-banner,
.learn-page main .note {
  background: #f7f7f7;
  border: 1px solid #d8d8d8;
}

.learn-page footer.note {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid #d8d8d8;
  background: transparent;
  border-left: 0;
  border-right: 0;
  border-bottom: 0;
  border-radius: 0;
  color: #5a5a5a;
}

.learn-page footer.note a {
  color: #006acc;
}

.lesson-body p,
.card-copy,
.option-row {
  overflow-wrap: anywhere;
}

.lesson-page ul,
.learn-section ul {
  max-width: 68ch;
  padding-left: 1.2rem;
}

.flash-list details {
  border-bottom: 1px solid #d8d8d8;
  padding: 12px 0;
}

.flash-list summary {
  cursor: pointer;
  font-weight: 600;
  color: #080808;
}

.option-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 8px 0;
}

.calc-result,
.sim-readout {
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: #080808;
  min-height: 1.4em;
}

.calc-result.error {
  color: #9d1024;
}

.calc-result.warning {
  color: #6b4300;
}

.bar-track {
  height: 12px;
  background: #eee;
  border-radius: 999px;
  overflow: hidden;
  margin: 12px 0;
}

.bar-fill {
  height: 100%;
  width: 0;
  background: #006acc;
}

.pager {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.pager button[aria-current="true"] {
  outline: 2px solid #006acc;
}

.hidden {
  display: none;
}

@media (max-width: 800px) {
  .nav-toggle {
    display: inline-flex;
    grid-area: nav;
    justify-self: end;
  }

  .learn-page .site-header {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand nav"
      "search search"
      "menu menu"
      "note note";
  }

  .learn-page .learn-header .site-nav {
    display: none;
    grid-area: menu;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-bottom: 8px;
  }

  .learn-page .learn-header.nav-open .site-nav {
    display: flex;
  }

  .learn-page .filter-row {
    top: 0;
    position: static;
  }

  .learn-page h1 {
    font-size: 2rem;
  }
}

@media (max-width: 640px) {
  .learn-page .container {
    width: min(1120px, calc(100% - 28px));
  }

  .lesson-list a {
    flex-direction: column;
    gap: 4px;
  }
}