/* ==========================================================================
   Chartered Roadmap - Stylesheet
   Modern, accessible, node-based roadmap UI inspired by roadmap.sh
   ========================================================================== */

:root {
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Color Palette - Light Mode */
  --bg-primary: #fafaf7;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f1eb;
  --text-primary: #18181b;
  --text-secondary: #52525b;
  --text-muted: #71717a;
  --border-color: #3f3f46;
  --border-subtle: #d4d4d8;
  --line-color: #a1a1aa;
  
  /* Roadmap Theme Accents */
  --hub-bg: #fde047;
  --hub-border: #18181b;
  --hub-text: #18181b;
  --done-bg: #dcfce7;
  --done-border: #16a34a;
  --done-text: #15803d;
  
  /* Category Pills */
  --pill-exam-bg: #fef08a;
  --pill-exam-text: #854d0e;
  --pill-exp-bg: #bae6fd;
  --pill-exp-text: #0369a1;
  --pill-admin-bg: #e4e4e7;
  --pill-admin-text: #3f3f46;
  --pill-ethics-bg: #e9d5ff;
  --pill-ethics-text: #6b21a8;
  --pill-training-bg: #fed7aa;
  --pill-training-text: #c2410c;

  --shadow-retro: 3px 3px 0 var(--border-color);
  --shadow-retro-sm: 2px 2px 0 var(--border-color);
  --shadow-retro-hover: 4px 4px 0 var(--border-color);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;
  --transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --bg-primary: #0f1115;
  --bg-surface: #181a20;
  --bg-subtle: #22252e;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --border-color: #71717a;
  --border-subtle: #3f3f46;
  --line-color: #52525b;

  --hub-bg: #eab308;
  --hub-border: #f4f4f5;
  --hub-text: #0f1115;
  --done-bg: #064e3b;
  --done-border: #22c55e;
  --done-text: #86efac;

  --pill-exam-bg: #422006;
  --pill-exam-text: #fef08a;
  --pill-exp-bg: #082f49;
  --pill-exp-text: #7dd3fc;
  --pill-admin-bg: #27272a;
  --pill-admin-text: #e4e4e7;
  --pill-ethics-bg: #3b0764;
  --pill-ethics-text: #d8b4fe;
  --pill-training-bg: #431407;
  --pill-training-text: #fdba74;

  --shadow-retro: 3px 3px 0 #000000;
  --shadow-retro-sm: 2px 2px 0 #000000;
  --shadow-retro-hover: 4px 4px 0 #000000;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #0f1115;
    --bg-surface: #181a20;
    --bg-subtle: #22252e;
    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --border-color: #71717a;
    --border-subtle: #3f3f46;
    --line-color: #52525b;

    --hub-bg: #eab308;
    --hub-border: #f4f4f5;
    --hub-text: #0f1115;
    --done-bg: #064e3b;
    --done-border: #22c55e;
    --done-text: #86efac;

    --pill-exam-bg: #422006;
    --pill-exam-text: #fef08a;
    --pill-exp-bg: #082f49;
    --pill-exp-text: #7dd3fc;
    --pill-admin-bg: #27272a;
    --pill-admin-text: #e4e4e7;
    --pill-ethics-bg: #3b0764;
    --pill-ethics-text: #d8b4fe;
    --pill-training-bg: #431407;
    --pill-training-text: #fdba74;

    --shadow-retro: 3px 3px 0 #000000;
    --shadow-retro-sm: 2px 2px 0 #000000;
    --shadow-retro-hover: 4px 4px 0 #000000;
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

button {
  font-family: inherit;
}

/* App Header */
.site-header {
  border-bottom: 2px solid var(--border-subtle);
  background-color: var(--bg-surface);
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(8px);
}

.header-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background-color: var(--hub-bg);
  color: var(--hub-text);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  box-shadow: var(--shadow-retro-sm);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-icon {
  background: var(--bg-surface);
  border: 1.5px solid var(--border-subtle);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.btn-icon:hover {
  border-color: var(--border-color);
  transform: translateY(-1px);
}

.btn-link {
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  box-shadow: var(--shadow-retro-sm);
  transition: var(--transition);
}

.btn-link:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-retro);
}

/* Hero Controls */
.controls-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 28px 18px 12px;
  text-align: center;
}

.hero-title {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 6px;
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 640px;
  margin: 0 auto 20px;
}

/* Qualification Segmented Tabs */
.tabs-segmented {
  display: inline-flex;
  background: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-retro);
  overflow: hidden;
  margin-bottom: 18px;
}

.tab-btn {
  padding: 10px 22px;
  font-size: 0.92rem;
  font-weight: 700;
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn:not(:last-child) {
  border-right: 2px solid var(--border-color);
}

.tab-btn.active {
  background-color: var(--hub-bg);
  color: var(--hub-text);
}

.tab-btn:hover:not(.active) {
  background-color: var(--bg-subtle);
}

/* Route Selector Pills */
.routes-wrapper {
  margin: 10px 0;
}

.route-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 8px;
  display: block;
}

.routes-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.pill-btn {
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--bg-surface);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
}

.pill-btn:hover {
  background: var(--bg-subtle);
  transform: translateY(-1px);
}

.pill-btn.active {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.route-blurb {
  font-size: 0.88rem;
  color: var(--text-secondary);
  max-width: 660px;
  margin: 12px auto 0;
  min-height: 24px;
}

/* Progress Tracker Bar */
.progress-card {
  max-width: 480px;
  margin: 18px auto 8px;
  background: var(--bg-surface);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 16px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.btn-text {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-decoration: underline;
  cursor: pointer;
}

.btn-text:hover {
  color: var(--text-primary);
}

.progress-bar-track {
  height: 8px;
  background: var(--bg-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background-color: var(--done-border);
  transition: width 0.35s ease;
}

/* Legend */
.legend-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 16px 0 10px;
}

.legend-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border-color);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.cat-Exam { background: var(--pill-exam-bg); color: var(--pill-exam-text); }
.cat-Experience { background: var(--pill-exp-bg); color: var(--pill-exp-text); }
.cat-Admin { background: var(--pill-admin-bg); color: var(--pill-admin-text); }
.cat-Ethics { background: var(--pill-ethics-bg); color: var(--pill-ethics-text); }
.cat-Training { background: var(--pill-training-bg); color: var(--pill-training-text); }

/* ==========================================================================
   Roadmap Interactive Tree (The Map)
   ========================================================================== */
.map-viewport {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 18px 80px;
  flex: 1;
}

.stage-row {
  display: grid;
  grid-template-columns: 1fr 220px 1fr;
  column-gap: 20px;
  position: relative;
  margin-bottom: 24px;
}

/* Center connecting spine */
.stage-row::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  border-left: 2px dashed var(--line-color);
  transform: translateX(-50%);
  z-index: 0;
}

.stage-hub-col {
  grid-column: 2;
  grid-row: 1;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hub-btn {
  width: 100%;
  background: var(--hub-bg);
  color: var(--hub-text);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 10px;
  text-align: center;
  font-weight: 800;
  font-size: 0.95rem;
  line-height: 1.25;
  box-shadow: var(--shadow-retro);
  cursor: pointer;
  transition: var(--transition);
}

.hub-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-retro-hover);
}

.hub-count {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  margin-top: 4px;
  opacity: 0.85;
}

.stage-side {
  grid-row: 1;
  padding-top: 60px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 1;
}

.stage-side.left {
  grid-column: 1;
  align-items: flex-end;
}

.stage-side.right {
  grid-column: 3;
  align-items: flex-start;
}

/* Step Node Card */
.node-card {
  position: relative;
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 9px 14px;
  font-size: 0.88rem;
  font-weight: 600;
  text-align: left;
  line-height: 1.35;
  cursor: pointer;
  box-shadow: var(--shadow-retro-sm);
  transition: var(--transition);
  max-width: 95%;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.node-card:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-retro);
}

.node-card.selected {
  outline: 3px solid var(--text-primary);
  outline-offset: 2px;
}

/* Connecting dashed horizontal arms */
.node-card::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 125px;
  border-top: 2px dashed var(--line-color);
  z-index: -1;
}

.stage-side.left .node-card::after {
  left: 100%;
}

.stage-side.right .node-card::after {
  right: 100%;
}

/* Node Completed State */
.node-card.done {
  background: var(--done-bg);
  border-color: var(--done-border);
  color: var(--done-text);
  text-decoration: line-through;
}

.node-card.done .check-icon {
  display: inline-block;
  text-decoration: none;
  font-weight: 800;
  color: var(--done-border);
}

.node-card:not(.done) .check-icon {
  display: none;
}

/* Details Drawer / Modal Panel */
.details-drawer {
  position: fixed;
  z-index: 50;
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
  padding: 24px;
  border-radius: var(--radius-lg);
  top: 80px;
  right: 20px;
  width: 360px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  transform: translateX(120%);
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.details-drawer.open {
  transform: translateX(0);
}

.drawer-close {
  position: absolute;
  right: 14px;
  top: 14px;
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
}

.drawer-close:hover {
  color: var(--text-primary);
  background: var(--bg-subtle);
}

.drawer-header {
  margin-bottom: 14px;
}

.drawer-title {
  font-size: 1.2rem;
  font-weight: 800;
  line-height: 1.3;
  margin: 8px 0 4px;
}

.drawer-body {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 20px;
}

.drawer-action-btn {
  width: 100%;
  padding: 12px;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
  background: var(--hub-bg);
  color: var(--hub-text);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-retro-sm);
  transition: var(--transition);
}

.drawer-action-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-retro);
}

.drawer-action-btn.is-done {
  background: var(--done-bg);
  border-color: var(--done-border);
  color: var(--done-text);
}

/* Site Footer */
.site-footer {
  border-top: 2px solid var(--border-subtle);
  background: var(--bg-surface);
  padding: 30px 18px 40px;
  margin-top: auto;
}

.footer-content {
  max-width: 900px;
  margin: 0 auto;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-disclaimer {
  background: var(--bg-subtle);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  margin-bottom: 18px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
}

.footer-nav {
  display: flex;
  gap: 14px;
}

/* ==========================================================================
   Mobile Responsive Adjustments (< 768px)
   ========================================================================== */
@media (max-width: 768px) {
  .stage-row {
    display: block;
    padding-left: 28px;
    margin-left: 10px;
  }

  .stage-row::before {
    left: 0;
    transform: none;
  }

  .stage-hub-col {
    margin-bottom: 14px;
    align-items: flex-start;
  }

  .hub-btn {
    width: auto;
    text-align: left;
    display: inline-block;
  }

  .stage-side {
    display: contents;
  }

  .node-card {
    display: flex;
    width: 100%;
    margin-bottom: 10px;
  }

  .stage-side.left .node-card::after,
  .stage-side.right .node-card::after {
    left: -28px;
    right: auto;
    width: 26px;
  }

  .details-drawer {
    left: 0;
    right: 0;
    top: auto;
    bottom: 0;
    width: 100%;
    max-height: 75vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    transform: translateY(110%);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.35);
  }

  .details-drawer.open {
    transform: translateY(0);
  }
}