/* ============================================================
   Python Mastery — Custom Styles
   ============================================================ */

/* ── Brand Colors ─────────────────────────────────────────── */
:root {
  --pm-python-blue:   #3776ab;
  --pm-python-yellow: #ffd343;
  --pm-dark:          #1a1a2e;
  --pm-surface:       #16213e;
  --pm-accent:        #4fc3f7;

  /* Level Colors */
  --level-beginner:     #43a047;
  --level-competent:    #00897b;
  --level-intermediate: #1e88e5;
  --level-proficient:   #8e24aa;
  --level-advanced:     #e53935;
  --level-expert:       #f4511e;
  --level-research:     #6d4c41;

  /* Track Colors */
  --track-core:       #3776ab;
  --track-web:        #00897b;
  --track-data:       #f9a825;
  --track-systems:    #e53935;
  --track-security:   #6d4c41;
  --track-research:   #8e24aa;
}

/* Material theme color overrides */
[data-md-color-scheme="default"] {
  --md-primary-fg-color:        #3776ab;
  --md-primary-fg-color--light: #4a90d9;
  --md-primary-fg-color--dark:  #2d5f8a;
  --md-accent-fg-color:         #ffd343;
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color:        #4a90d9;
  --md-primary-fg-color--light: #64a8e8;
  --md-primary-fg-color--dark:  #3776ab;
  --md-accent-fg-color:         #ffd343;
  --md-default-bg-color:        #1a1a2e;
}

/* ── Typography ───────────────────────────────────────────── */
.md-typeset h1 {
  font-weight: 800;
  letter-spacing: -0.5px;
}

.md-typeset h2 {
  font-weight: 700;
  border-bottom: 2px solid var(--md-primary-fg-color);
  padding-bottom: 6px;
}

/* ── Hero Section (Homepage) ──────────────────────────────── */
.pm-hero {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  color: white;
  padding: 80px 40px;
  text-align: center;
  border-radius: 16px;
  margin: -16px -16px 40px;
  position: relative;
  overflow: hidden;
}

.pm-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234a90d9' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.pm-hero-content {
  position: relative;
  z-index: 1;
}

.pm-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 0%, #ffd343 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  border: none !important;
}

.pm-hero p {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin: 0 auto 32px;
}

.pm-hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin: 32px 0;
  flex-wrap: wrap;
}

.pm-hero-stat {
  text-align: center;
}

.pm-hero-stat .number {
  font-size: 2.5rem;
  font-weight: 900;
  color: #ffd343;
  display: block;
}

.pm-hero-stat .label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.pm-hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

.pm-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.pm-btn-primary {
  background: #ffd343;
  color: #1a1a2e;
}

.pm-btn-primary:hover {
  background: #ffe066;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,211,67,0.4);
  color: #1a1a2e;
}

.pm-btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.6);
}

.pm-btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
  color: white;
  transform: translateY(-2px);
}

/* ── Track Cards ──────────────────────────────────────────── */
.pm-tracks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 32px 0;
}

.pm-track-card {
  border-radius: 16px;
  padding: 28px;
  text-decoration: none;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}

.pm-track-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--track-color);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.pm-track-card:hover::after { transform: scaleX(1); }

.pm-track-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
  text-decoration: none;
}

[data-md-color-scheme="default"] .pm-track-card {
  background: #f8f9fa;
  color: #1a1a2e;
}

[data-md-color-scheme="slate"] .pm-track-card {
  background: #1e2a3a;
  color: #e0e0e0;
}

.pm-track-card .track-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
  display: block;
}

.pm-track-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 8px;
}

.pm-track-card p {
  font-size: 0.88rem;
  opacity: 0.75;
  margin: 0 0 16px;
  line-height: 1.6;
}

.pm-track-card .track-meta {
  font-size: 0.78rem;
  font-weight: 600;
  opacity: 0.6;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── Level Badges ─────────────────────────────────────────── */
.pm-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  vertical-align: middle;
  margin-left: 8px;
}

.pm-badge-beginner     { background: #e8f5e9; color: var(--level-beginner); }
.pm-badge-competent    { background: #e0f2f1; color: var(--level-competent); }
.pm-badge-intermediate { background: #e3f2fd; color: var(--level-intermediate); }
.pm-badge-proficient   { background: #f3e5f5; color: var(--level-proficient); }
.pm-badge-advanced     { background: #ffebee; color: var(--level-advanced); }
.pm-badge-expert       { background: #fbe9e7; color: var(--level-expert); }
.pm-badge-research     { background: #efebe9; color: var(--level-research); }

[data-md-color-scheme="slate"] .pm-badge-beginner     { background: #1b5e2033; }
[data-md-color-scheme="slate"] .pm-badge-competent    { background: #00695c33; }
[data-md-color-scheme="slate"] .pm-badge-intermediate { background: #0d47a133; }
[data-md-color-scheme="slate"] .pm-badge-proficient   { background: #4a148c33; }
[data-md-color-scheme="slate"] .pm-badge-advanced     { background: #b71c1c33; }
[data-md-color-scheme="slate"] .pm-badge-expert       { background: #bf360c33; }
[data-md-color-scheme="slate"] .pm-badge-research     { background: #3e272333; }

/* ── Level Cards (Levels page) ────────────────────────────── */
.pm-levels-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 32px 0;
}

.pm-level-card {
  border-radius: 12px;
  padding: 24px 28px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 20px;
  align-items: center;
  text-decoration: none;
  transition: all 0.2s ease;
  border-left: 5px solid var(--level-color);
}

[data-md-color-scheme="default"] .pm-level-card { background: #f8f9fa; }
[data-md-color-scheme="slate"]   .pm-level-card { background: #1e2a3a; }

.pm-level-card:hover {
  transform: translateX(4px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  text-decoration: none;
}

.pm-level-card .level-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--level-color);
  min-width: 48px;
}

.pm-level-card h3 { margin: 0 0 4px; font-size: 1.1rem; font-weight: 700; }
.pm-level-card p  { margin: 0; font-size: 0.88rem; opacity: 0.7; }

.pm-level-card .level-stats {
  text-align: right;
  font-size: 0.8rem;
  opacity: 0.6;
  white-space: nowrap;
}

/* ── Topic Page Header ────────────────────────────────────── */
.pm-topic-header {
  border-radius: 12px;
  padding: 28px;
  margin-bottom: 32px;
  border-left: 5px solid var(--md-primary-fg-color);
}

[data-md-color-scheme="default"] .pm-topic-header { background: #f0f4ff; }
[data-md-color-scheme="slate"]   .pm-topic-header { background: #1e2a3a; }

.pm-topic-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
  font-size: 0.85rem;
}

.pm-topic-meta span {
  display: flex;
  align-items: center;
  gap: 5px;
  opacity: 0.75;
}

/* ── Prerequisites / Next Steps ──────────────────────────── */
.pm-prereqs, .pm-next {
  border-radius: 10px;
  padding: 16px 20px;
  margin: 20px 0;
}

.pm-prereqs {
  border-left: 4px solid #ff9800;
  background: #fff3e0;
}

.pm-next {
  border-left: 4px solid #4caf50;
  background: #e8f5e9;
}

[data-md-color-scheme="slate"] .pm-prereqs { background: #3e2a0033; }
[data-md-color-scheme="slate"] .pm-next    { background: #1b5e2033; }

.pm-prereqs strong, .pm-next strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pm-prereqs a, .pm-next a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin: 3px 8px 3px 0;
  font-size: 0.9rem;
  font-weight: 600;
}

/* ── Subtopic List ────────────────────────────────────────── */
.pm-subtopics {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}

.pm-subtopics li {
  border-radius: 8px;
  border: 1px solid rgba(128,128,128,0.2);
  transition: all 0.2s ease;
}

.pm-subtopics li:hover {
  border-color: var(--md-primary-fg-color);
  transform: translateX(3px);
}

.pm-subtopics li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
}

/* ── Code Example Tabs ────────────────────────────────────── */
.pm-code-block {
  border-radius: 12px;
  overflow: hidden;
  margin: 20px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* ── Roadmap Grid ─────────────────────────────────────────── */
.pm-roadmap-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 6px;
  margin: 24px 0;
}

.pm-roadmap-table th {
  padding: 10px 16px;
  border-radius: 8px;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pm-roadmap-table td {
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.82rem;
  vertical-align: top;
  min-width: 120px;
}

.pm-roadmap-table td a {
  display: block;
  padding: 4px 0;
  font-size: 0.82rem;
}

/* ── Progress Indicators ──────────────────────────────────── */
.pm-progress {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 8px 0;
}

.pm-progress-bar {
  flex: 1;
  height: 6px;
  background: rgba(128,128,128,0.2);
  border-radius: 3px;
  overflow: hidden;
}

.pm-progress-bar-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--md-primary-fg-color);
  transition: width 0.3s ease;
}

/* ── Coming Soon Banner ───────────────────────────────────── */
.pm-coming-soon {
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  background: repeating-linear-gradient(
    45deg,
    rgba(128,128,128,0.03),
    rgba(128,128,128,0.03) 10px,
    rgba(128,128,128,0.07) 10px,
    rgba(128,128,128,0.07) 20px
  );
  border: 2px dashed rgba(128,128,128,0.3);
  margin: 24px 0;
}

.pm-coming-soon p { opacity: 0.6; margin: 8px 0 0; }

/* ── Navigation enhancements ─────────────────────────────── */
.md-nav__title { font-weight: 700; }

/* ── Footer ───────────────────────────────────────────────── */
.md-footer { margin-top: 40px; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .pm-hero { padding: 48px 20px; margin: -8px -8px 24px; }
  .pm-hero-stats { gap: 24px; }
  .pm-hero-stat .number { font-size: 1.8rem; }
  .pm-tracks-grid { grid-template-columns: 1fr; }
  .pm-level-card { grid-template-columns: auto 1fr; }
  .pm-level-card .level-stats { display: none; }
}


/* ============================
   GISCUS COMMENTS SECTION
=============================== */
.pm-comments-section {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 2px solid rgba(128, 128, 128, 0.15);
}

.pm-comments-section h2 {
  font-size: 1.4rem;
  margin-bottom: 8px;
  border-bottom: none;
  padding-bottom: 0;
}

.pm-comments-intro {
  font-size: 0.9rem;
  opacity: 0.7;
  margin-bottom: 24px;
}

/* Giscus frame styling */
.giscus {
  max-width: 100%;
}

.giscus-frame {
  border: none;
  width: 100%;
  min-height: 150px;
}

/* Dark mode adaptation */
[data-md-color-scheme="slate"] .pm-comments-section {
  border-top-color: rgba(255, 255, 255, 0.1);
}


/* ── Share this page ──────────────────────────────────────── */
.pm-share-section {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--md-default-fg-color--lightest);
}

.pm-share-intro {
  color: var(--md-default-fg-color--light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.pm-share-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
}

.pm-share-qr {
  flex: 0 0 auto;
  padding: 8px;
  background: #ffffff;          /* QR needs a light background to scan reliably */
  border-radius: 8px;
  line-height: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

.pm-share-actions {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-width: 200px;
}

.pm-share-btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  color: var(--md-primary-bg-color, #fff);
  background: var(--md-primary-fg-color, #4051b5);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.pm-share-btn:hover {
  opacity: 0.85;
}

.pm-share-url {
  font-size: 0.75rem;
  color: var(--md-default-fg-color--light);
  word-break: break-all;
}

/* Stack vertically on narrow screens */
@media (max-width: 480px) {
  .pm-share-grid {
    flex-direction: column;
    align-items: flex-start;
  }
}


/* ── Footer support / sponsor link ────────────────────────── */
.pm-footer-support {
  background: var(--md-footer-bg-color--dark, #1a1a1a);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.75rem;
  text-align: center;
  padding: 0.6rem 1rem;
}

.pm-footer-support__inner {
  max-width: 61rem;
  margin: 0 auto;
}

.pm-footer-support a {
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}

.pm-footer-support a:hover {
  text-decoration: underline;
}

.pm-footer-sep {
  margin: 0 0.4rem;
  opacity: 0.5;
}

/* ── Cheat-sheet section heading links ────────────────────── */
/* Applied via {.pm-cheat-link} on cheat-sheet "##" headings so each
   section title doubles as a link to its full track/lesson page. */
.md-typeset h2 a.pm-cheat-link {
  color: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  transition: color 0.15s ease;
}

/* The trailing arrow is hidden until hover/focus, then slides in. */
.md-typeset h2 a.pm-cheat-link::after {
  content: "→";
  font-weight: 400;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.md-typeset h2 a.pm-cheat-link:hover,
.md-typeset h2 a.pm-cheat-link:focus-visible {
  color: var(--md-primary-fg-color);
}

.md-typeset h2 a.pm-cheat-link:hover::after,
.md-typeset h2 a.pm-cheat-link:focus-visible::after {
  opacity: 0.8;
  transform: translateX(0);
}

/* ── Print styles ─────────────────────────────────────────── */
/* Applies when the user prints or "Save as PDF". Strips site chrome,
   forces an ink-friendly light theme, and keeps cards/tables from
   splitting across page breaks. Tuned for the cheat-sheet and
   reference pages, but safe site-wide. */
@media print {

  /* Hide everything that isn't the article content. */
  .md-header,
  .md-tabs,
  .md-sidebar,
  .md-nav,
  .md-footer,
  .md-search,
  .md-top,
  .md-content__button,
  .pm-footer-support,
  .pm-share-section,
  .pm-comments-section,
  .md-feedback,
  .md-source {
    display: none !important;
  }

  /* Give the content the full page width. */
  .md-main__inner,
  .md-content,
  .md-content__inner,
  .md-grid {
    margin: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
  }

  /* Force a light, ink-friendly palette regardless of theme toggle. */
  [data-md-color-scheme="slate"],
  :root {
    --md-default-bg-color: #ffffff;
    --md-default-fg-color: #000000;
    --md-typeset-color: #000000;
  }

  body,
  .md-typeset {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 10.5pt;
  }

  /* Shrink headings and keep them with the content that follows. */
  .md-typeset h1 { font-size: 18pt; }
  .md-typeset h2 {
    font-size: 13pt;
    border-bottom: 1px solid #000;
    break-after: avoid;
    page-break-after: avoid;
  }
  .md-typeset h3 {
    font-size: 11pt;
    break-after: avoid;
    page-break-after: avoid;
  }

  /* Section heading links print as plain black text, no arrow. */
  .md-typeset h2 a.pm-cheat-link { color: #000 !important; }
  .md-typeset h2 a.pm-cheat-link::after { content: "" !important; }

  /* Don't split a table across pages when it can be avoided. */
  .md-typeset table:not([class]) {
    break-inside: avoid;
    page-break-inside: avoid;
    font-size: 9.5pt;
    width: 100%;
    border: 1px solid #000;
  }

  .md-typeset table:not([class]) th,
  .md-typeset table:not([class]) td {
    border: 1px solid #999;
  }

  /* Light, bordered code so snippets stay legible on paper. */
  .md-typeset code,
  .md-typeset pre > code {
    background: #f2f2f2 !important;
    color: #000 !important;
    border: 1px solid #ddd;
  }

  /* Keep admonitions and the "next" block from breaking mid-box. */
  .md-typeset .admonition,
  .pm-next,
  .pm-topic-header {
    break-inside: avoid;
    page-break-inside: avoid;
    border: 1px solid #ccc;
    background: #fafafa !important;
  }

  /* Expand any collapsed <details> so nothing is hidden on paper. */
  .md-typeset details[open],
  .md-typeset details {
    display: block;
  }

  /* Set reasonable page margins. */
  @page {
    margin: 1.5cm;
  }
}