/* ============================================================
   Cúram Education – main stylesheet
   Plain CSS3, no build tools required
   Colours: Merative/Cúram brand palette
   ============================================================ */

/* --- Reset & base ------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary:       #9900FF;   /* Merative purple – links only */
  --color-primary-dark:  #6600BB;   /* link hover */
  --color-orange:        #FF8241;   /* Cúram brand orange – banners, buttons */
  --color-orange-dark:   #D96820;   /* orange hover / active */
  --color-nav-bg:        #FFFFFF;   /* nav bar – white so logo reads naturally */
  --color-nav-border:    #E0DDD8;   /* subtle bottom border on nav */
  --color-accent:        #FA1E32;   /* red accent / callouts */
  --color-bg:            #E7E2DA;   /* warm cream page bg */
  --color-surface:       #FAF8F6;   /* off-white cards / panels */
  --color-border:        #CCC7BE;   /* borders / dividers */
  --color-text:          #20201F;   /* near-black body text */
  --color-text-muted:    #5C5C5A;   /* secondary / meta text */
  --color-link:          #7700CC;   /* purple link on light bg */
  --color-link-hover:    #6600BB;
  --color-notification-bg:   #FFF0E8;
  --color-notification-border: #FF8241;
  --max-width:           1200px;
  --radius:              6px;
  --font-stack:          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                         Helvetica, Arial, sans-serif;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-stack);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

a { color: var(--color-link); text-decoration: underline; }
a:hover, a:focus { color: var(--color-link-hover); }

img, video { max-width: 100%; height: auto; display: block; }

/* --- Layout helpers ---------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Header / nav ------------------------------------------ */
.site-header {
  background: var(--color-nav-bg);
  color: var(--color-text);
  border-bottom: 3px solid var(--color-orange);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.5rem;
  gap: 1rem;
}

.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}
.site-logo img.logo-img {
  height: 36px;
  width: auto;
  display: block;
}
.site-logo:hover img.logo-img { opacity: 0.85; }

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.site-nav a {
  display: block;
  padding: 0.5rem 0.85rem;
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}
.site-nav a:hover,
.site-nav a:focus,
.site-nav a.active {
  background: var(--color-orange);
  color: #fff;
}

/* Hamburger (hidden on desktop) */
.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--color-orange);
  color: var(--color-orange);
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
}

/* --- Breadcrumb -------------------------------------------- */
.breadcrumb {
  padding: 0.6rem 0;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.85);
}
.breadcrumb a { color: rgba(255,255,255,0.9); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span + span::before { content: " / "; }

/* --- Page hero --------------------------------------------- */
.page-hero {
  background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-orange-dark) 100%);
  color: #fff;
  padding: 2.5rem 0 2rem;
}
.page-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.page-hero p {
  font-size: 1.05rem;
  opacity: 0.95;
  max-width: 700px;
}

/* --- Main content ------------------------------------------ */
main {
  padding: 2rem 0 3rem;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 900px) {
  .content-grid {
    grid-template-columns: 220px 1fr;
  }
}

/* Sidebar TOC */
.toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  align-self: start;
  position: sticky;
  top: 4.5rem;
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
}
.toc h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}
.toc ul { list-style: none; }
.toc li { margin-bottom: 0.3rem; }
.toc a {
  font-size: 0.875rem;
  color: var(--color-link);
  text-decoration: none;
}
.toc a:hover { text-decoration: underline; }

/* TOC section headings */
.toc-section { margin-bottom: 0.6rem; margin-top: 0.2rem; }
.toc-section > a {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-orange-dark);
  text-decoration: none;
  padding: 0.2rem 0;
  margin-bottom: 0.2rem;
}
.toc-section > a:hover { text-decoration: underline; }
.toc-section > ul {
  padding-left: 0.85rem;
  border-left: 2px solid var(--color-border);
  margin-bottom: 0.4rem;
}
.toc-section > ul li { margin-bottom: 0.25rem; }
.toc-section > ul a {
  font-size: 0.82rem;
  color: var(--color-link);
}

/* Prose */
.prose { max-width: 860px; }
.prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-orange);
  color: var(--color-text);
}
.prose h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 1.75rem 0 0.5rem;
  color: var(--color-orange-dark);
}
.prose h4 {
  font-size: 1rem;
  font-weight: 700;
  margin: 1.25rem 0 0.4rem;
}
.prose p { margin-bottom: 1rem; }
.prose ul, .prose ol {
  margin: 0.5rem 0 1rem 1.5rem;
}
.prose li { margin-bottom: 0.35rem; }
.prose strong { font-weight: 700; }
.prose em { font-style: italic; }

/* --- Tables ------------------------------------------------ */
.table-wrap { overflow-x: auto; margin: 1rem 0 1.5rem; }
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9rem;
  background: var(--color-surface);
}
th {
  background: var(--color-orange-dark);
  color: #fff;
  text-align: left;
  padding: 0.65rem 1rem;
  font-weight: 600;
}
td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
tr:nth-child(even) td { background: var(--color-bg); }

/* --- Notification badge ------------------------------------ */
.notification {
  display: inline-block;
  background: var(--color-notification-bg);
  border-left: 3px solid var(--color-notification-border);
  color: var(--color-orange-dark);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 0 0.5rem;
  vertical-align: middle;
}

/* --- Cards ------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-orange);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.card h3 {
  font-size: 1rem;
  color: var(--color-text);
  margin: 0;
}
.card p { font-size: 0.9rem; color: var(--color-text-muted); margin: 0; }
.card a {
  margin-top: auto;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-link);
}

/* --- PDF list ---------------------------------------------- */
.pdf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
  margin: 1rem 0 1.5rem;
}
.pdf-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.65rem 0.9rem;
  font-size: 0.875rem;
}
.pdf-item::before {
  content: "📄";
  flex-shrink: 0;
}
.pdf-item a { word-break: break-word; }

/* --- Course entry ------------------------------------------ */
.course {
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-orange);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  background: var(--color-surface);
}
.course:target {
  border-left-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(255,130,65,0.2);
}
.course h3 {
  margin-top: 0;
  font-size: 1.05rem;
  color: var(--color-text);
}
.course ul { margin-left: 1.25rem; }
.course .course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.5rem;
}
.course .course-meta span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.course .course-meta strong { color: var(--color-text); }

/* --- Certification list ------------------------------------ */
.cert-list { list-style: none; margin: 1rem 0; }
.cert-list li {
  border-left: 4px solid var(--color-orange);
  padding: 0.75rem 1rem;
  margin-bottom: 0.75rem;
  background: var(--color-surface);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.cert-list li em {
  display: block;
  font-style: normal;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

/* --- Learning path ----------------------------------------- */
.path-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-orange);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}
.path-section h3 { margin-top: 0; color: var(--color-orange-dark); }
.path-section ol { margin-left: 1.5rem; }
.path-section li { margin-bottom: 0.4rem; }

/* --- Tip list ---------------------------------------------- */
.tips-list { list-style: none; margin: 1rem 0; }
.tips-list > li {
  position: relative;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  margin-bottom: 0.75rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}
.tips-list > li::before {
  content: "✔";
  position: absolute;
  left: 0.75rem;
  top: 0.8rem;
  color: var(--color-orange);
  font-weight: 700;
}

/* --- Video embed ------------------------------------------- */
.video-wrap {
  margin: 1.5rem 0;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 640px;
}
.video-wrap video { width: 100%; }

/* --- Step list --------------------------------------------- */
.steps { counter-reset: steps; list-style: none; margin: 1rem 0; }
.steps li {
  counter-increment: steps;
  position: relative;
  padding: 0.75rem 1rem 0.75rem 3rem;
  margin-bottom: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
}
.steps li::before {
  content: counter(steps);
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-orange);
  color: #fff;
  font-weight: 700;
  border-radius: var(--radius) 0 0 var(--radius);
}

/* --- CTA button -------------------------------------------- */
.btn {
  display: inline-block;
  padding: 0.65rem 1.5rem;
  background: var(--color-orange);
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.15s;
}
.btn:hover, .btn:focus { background: var(--color-orange-dark); color: #fff; }

/* --- Footer ------------------------------------------------ */
.site-footer {
  background: var(--color-text);
  color: #E7E2DA;
  border-top: none;
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.85rem;
}
.site-footer a { color: var(--color-orange); }
.site-footer a:hover { color: #fff; }

/* --- Responsive -------------------------------------------- */
@media (max-width: 700px) {
  .nav-toggle { display: block; }

  /* Keep logo + toggle always on the same row, nav drops below */
  .site-header .container {
    flex-wrap: wrap;
    align-items: center;
  }
  .site-logo {
    flex: 1 1 auto;
    min-width: 0;
  }
  .site-logo img.logo-img {
    max-width: 100%;
    height: 28px;
  }
  .nav-toggle {
    flex-shrink: 0;
    order: 2;
  }
  .site-nav {
    order: 3;
    flex-basis: 100%;
    display: none;
    padding-bottom: 0.75rem;
  }
  .site-nav.open { display: block; }

  .site-nav ul {
    flex-direction: column;
    gap: 0.15rem;
  }
  .site-nav a { padding: 0.6rem 0.75rem; }

  /* On mobile the TOC sits above content in normal flow — remove max-height/scroll */
  .toc {
    position: static;
    max-height: none;
    overflow-y: visible;
  }

  th, td { padding: 0.5rem 0.6rem; }

  /* Card grid single column on small screens */
  .card-grid { grid-template-columns: 1fr; }

  /* PDF grid single column */
  .pdf-grid { grid-template-columns: 1fr; }
}