/* ── ARTIFAKT ELEMENT ───────────────────────────────── */
@font-face { font-family: 'Artifakt Element'; src: url('fonts/Artifakt Element Light.otf') format('opentype'); font-weight: 300; font-style: normal; }
@font-face { font-family: 'Artifakt Element'; src: url('fonts/Artifakt Element Light Italic.otf') format('opentype'); font-weight: 300; font-style: italic; }
@font-face { font-family: 'Artifakt Element'; src: url('fonts/Artifakt Element Regular.otf') format('opentype'); font-weight: 400; font-style: normal; }
@font-face { font-family: 'Artifakt Element'; src: url('fonts/Artifakt Element Italic.otf') format('opentype'); font-weight: 400; font-style: italic; }
@font-face { font-family: 'Artifakt Element'; src: url('fonts/Artifakt Element Medium.otf') format('opentype'); font-weight: 500; font-style: normal; }
@font-face { font-family: 'Artifakt Element'; src: url('fonts/Artifakt Element Medium Italic.otf') format('opentype'); font-weight: 500; font-style: italic; }
@font-face { font-family: 'Artifakt Element'; src: url('fonts/Artifakt Element Semi Bold.otf') format('opentype'); font-weight: 600; font-style: normal; }
@font-face { font-family: 'Artifakt Element'; src: url('fonts/Artifakt Element Semi Bold Italic.otf') format('opentype'); font-weight: 600; font-style: italic; }
@font-face { font-family: 'Artifakt Element'; src: url('fonts/Artifakt Element Bold.otf') format('opentype'); font-weight: 700; font-style: normal; }
@font-face { font-family: 'Artifakt Element'; src: url('fonts/Artifakt Element Bold Italic.otf') format('opentype'); font-weight: 700; font-style: italic; }

/* ── ARTIFAKT LEGEND ────────────────────────────────── */
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Light.otf') format('opentype'); font-weight: 300; font-style: normal; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Light Italic.otf') format('opentype'); font-weight: 300; font-style: italic; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Regular.otf') format('opentype'); font-weight: 400; font-style: normal; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Italic.otf') format('opentype'); font-weight: 400; font-style: italic; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Medium.otf') format('opentype'); font-weight: 500; font-style: normal; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Medium Italic.otf') format('opentype'); font-weight: 500; font-style: italic; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Semi Bold.otf') format('opentype'); font-weight: 600; font-style: normal; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Semi Bold Italic.otf') format('opentype'); font-weight: 600; font-style: italic; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Bold.otf') format('opentype'); font-weight: 700; font-style: normal; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Bold Italic.otf') format('opentype'); font-weight: 700; font-style: italic; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Extra Bold.otf') format('opentype'); font-weight: 800; font-style: normal; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Extra Bold Italic.otf') format('opentype'); font-weight: 800; font-style: italic; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Black.otf') format('opentype'); font-weight: 900; font-style: normal; }
@font-face { font-family: 'Artifakt Legend'; src: url('fonts/Artifakt Legend Black Italic.otf') format('opentype'); font-weight: 900; font-style: italic; }

:root {
  --yellow:        #FFD200;
  --yellow-light:  #FFF5B0;
  --yellow-subtle: #FFFCE8;
  --yellow-border: #F0DA80;
  --yellow-text:   #6B5500;

  --black:    #111111;
  --gray-800: #2C2C2C;
  --gray-700: #444444;
  --gray-600: #666666;
  --gray-500: #888888;
  --gray-400: #AAAAAA;
  --gray-300: #D0D0D0;
  --gray-200: #E8E8E8;
  --gray-100: #F3F3F3;
  --gray-50:  #F9F9F9;
  --white:    #FFFFFF;

  --font:        'Artifakt Element', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-legend: 'Artifakt Legend', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius:      12px;
  --radius-sm:   6px;
  --radius-full: 999px;

  --shadow-card:       0 2px 8px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 8px 28px rgba(0,0,0,0.12), 0 2px 6px rgba(0,0,0,0.05);
  --shadow-modal:      0 24px 80px rgba(0,0,0,0.22);

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scrollbar-gutter: stable; }

body {
  font-family: var(--font);
  background: var(--gray-50);
  color: var(--black);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
}


/* ── HEADER ───────────────────────────────────────── */

header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(249,249,249,0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--gray-200);
}

header .container {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 52px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

/* Header search */
.header-search {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  padding: 0 12px;
  height: 34px;
  transition: max-width 0.25s var(--ease), padding 0.2s var(--ease), background 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.header-search:hover {
  background: var(--gray-100);
  border-color: var(--gray-200);
}
.header-search:focus-within {
  background: var(--white);
  border-color: var(--gray-400);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.05);
}

/* Collapsed icon mode — only when header has scrolled past the view-nav */
header.scrolled .header-search {
  flex: 0 0 auto;
  max-width: 34px;
  overflow: hidden;
  padding: 0 10px;
  cursor: pointer;
}
header.scrolled .header-search:not(.expanded):hover {
  background: var(--gray-100);
  border-color: var(--gray-200);
}
header.scrolled .header-search.expanded {
  flex: 1;
  max-width: 500px;
  padding: 0 12px;
  cursor: default;
}
header.scrolled .header-search.expanded:hover {
  background: var(--white);
  border-color: var(--gray-400);
}
header.scrolled .header-search.expanded:focus-within {
  background: var(--white);
  border-color: var(--gray-400);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.05);
}
header.scrolled .header-search:not(.expanded) input {
  width: 0;
  opacity: 0;
  pointer-events: none;
}
header.scrolled .header-search:not(.expanded) .search-clear {
  display: none;
}
.header-search svg { color: var(--gray-400); flex-shrink: 0; }
.header-search input {
  border: none;
  background: none;
  font-family: var(--font);
  font-size: 13px;
  color: var(--black);
  outline: none;
  width: 100%;
}
.header-search input::placeholder { color: var(--gray-400); }

.search-clear {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: var(--gray-400);
  flex-shrink: 0;
  transition: color 0.12s;
}
.search-clear:hover { color: var(--black); }
.search-clear.visible { display: flex; }

/* Header actions (suggest + request) */
.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  margin-left: auto;
}

.header-action-btn {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-500);
  text-decoration: none;
  padding: 4px 6px;
  white-space: nowrap;
  transition: color 0.12s;
  position: relative;
}
.header-action-btn:hover { color: var(--black); }

[data-tooltip] {
  position: relative;
}
[data-tooltip]::before {
  content: '';
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid var(--white);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s, transform 0.15s;
  z-index: 101;
  filter: drop-shadow(0 -1px 1px rgba(0,0,0,0.08));
}
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--white);
  color: var(--gray-600);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
  padding: 8px 11px;
  border-radius: 8px;
  white-space: normal;
  width: 220px;
  text-align: left;
  pointer-events: none;
  opacity: 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.10), 0 1px 4px rgba(0,0,0,0.06);
  transition: opacity 0.15s, transform 0.15s;
  z-index: 100;
}
[data-tooltip]:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.header-action-sep {
  color: var(--gray-300);
  font-size: 13px;
  user-select: none;
}


/* Search overlay */
.search-overlay {
  position: fixed;
  top: 52px;
  left: 0;
  right: 0;
  z-index: 150;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: 0 12px 40px rgba(0,0,0,0.1);
  max-height: calc(100vh - 52px);
  overflow-y: auto;
  display: none;
}
.search-overlay.open { display: block; }

.search-results-list {
  padding: 8px 0 24px;
}

.search-result {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-100);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: background 0.1s;
  border-radius: var(--radius-sm);
}
.search-result:last-child { border-bottom: none; }
.search-result:hover:not(.disabled) { background: var(--gray-50); }
.search-result.disabled { opacity: 0.45; cursor: default; pointer-events: none; }

.result-type {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  width: 56px;
  flex-shrink: 0;
}

.result-content { flex: 1; min-width: 0; }

.result-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-subtitle {
  font-size: 12px;
  color: var(--gray-500);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-meta { flex-shrink: 0; }
.result-arrow svg { color: var(--gray-300); }

.search-empty {
  padding: 32px 0;
  font-size: 14px;
  color: var(--gray-400);
  text-align: center;
}

.logo {
  font-family: var(--font-legend);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--black);
  text-decoration: none;
  cursor: pointer;
}

.logo em {
  font-style: normal;
  color: var(--gray-400);
  font-weight: 400;
}

/* Header nav — hidden until view-nav scrolls out */
.header-nav {
  display: flex;
  gap: 4px;
  max-width: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  flex-shrink: 0;
  transition: max-width 0.3s ease, opacity 0.2s ease;
}
.header-nav.visible {
  max-width: 440px;
  opacity: 1;
  pointer-events: all;
}

.header-nav-btn {
  all: unset;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  color: var(--gray-500);
  transition: all 0.15s;
  border: 1px solid transparent;
  white-space: nowrap;
  flex-shrink: 0;
}
.header-nav-btn:hover { color: var(--black); background: var(--gray-100); }
.header-nav-btn.active {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}


/* ── VIEW NAV (two large buttons) ────────────────── */

.view-nav {
  background: var(--gray-50);
  padding: 112px 0 28px;
  position: relative;
  overflow: hidden;
}

.view-nav::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('images/heros/hero-bg-2.png');
  background-position: right max(140px, calc((100% - 1280px) / 2 + 140px)) top;
  background-size: auto 100%;
  background-repeat: no-repeat;
  mix-blend-mode: multiply;
  opacity: 0.8;
  pointer-events: none;
  z-index: 0;
}

.view-nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.view-nav-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.view-nav-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.view-intro {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0 4px;
  margin-bottom: 52px;
}

.view-intro-pretitle {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 12px;
}

.view-intro-label {
  font-family: var(--font-legend);
  font-size: 64px;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--black);
  line-height: 0.95;
  margin-bottom: 18px;
}

.view-intro-sub {
  font-size: 18px;
  font-weight: 400;
  color: var(--gray-500);
  max-width: 460px;
  line-height: 1.45;
}

.view-panel {
  all: unset;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 28px 32px;
  border-radius: var(--radius);
  background: var(--white);
  transition: all 0.18s var(--ease);
  box-shadow: var(--shadow-card);
}

.view-panel:hover:not(.active) {
  border-color: var(--gray-300);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.view-panel.active {
  background: var(--black);
  border-color: var(--black);
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
}

.view-panel-label {
  font-family: var(--font-legend);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--gray-400);
  transition: color 0.15s;
}

.view-panel.active .view-panel-label { color: var(--white); }
.view-panel:hover:not(.active) .view-panel-label { color: var(--black); }

.view-panel-sub {
  font-size: 13px;
  color: var(--gray-400);
  font-weight: 400;
  transition: color 0.15s;
}

.view-panel.active .view-panel-sub { color: rgba(255,255,255,0.45); }
.view-panel:hover:not(.active) .view-panel-sub { color: var(--gray-500); }

.view-panel-promo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--yellow-text);
  margin-top: 2px;
  transition: color 0.15s;
}
.view-panel-promo::before {
  content: '';
  flex-shrink: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--yellow);
  animation: pulse-dot 2s ease-in-out infinite;
}
.view-panel.active .view-panel-promo { color: var(--yellow); }
.view-panel:hover:not(.active) .view-panel-promo { color: var(--yellow-text); }

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%       { transform: scale(1.6); opacity: 0.6; }
}

.view-panel--hero {
  background-color: var(--white);
  background-image: url('images/heros/challenge-2-hero-v2.png');
  background-position: right center;
  background-size: 63% auto;
  background-repeat: no-repeat;
  padding: 56px 56px;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.view-panel--hero:hover:not(.active) {
  transform: none;
  box-shadow: var(--shadow-card-hover);
}

.view-panel-pretitle {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: -6px;
}

.view-panel--hero .view-panel-label {
  font-size: 52px;
  color: var(--black);
  margin-bottom: 12px;
}

.view-panel--hero .view-panel-sub {
  font-size: 15px;
  color: var(--gray-500);
  max-width: 420px;
  margin-bottom: 28px;
}

.view-panel--hero:hover:not(.active) .view-panel-label { color: var(--black); }
.view-panel--hero:hover:not(.active) .view-panel-sub { color: var(--gray-600); }

.view-panel-cta {
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  background: var(--black);
  border: 1.5px solid var(--black);
  padding: 10px 22px;
  border-radius: 100px;
  transition: all 0.18s var(--ease);
}

.view-panel--hero:hover .view-panel-cta {
  background: var(--gray-800);
  border-color: var(--gray-800);
}

.view-panel-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.view-panel-cta-tertiary {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-400);
  transition: color 0.18s var(--ease);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gray-200);
}

.view-panel--hero:hover .view-panel-cta-tertiary {
  color: var(--gray-600);
  text-decoration-color: var(--gray-400);
}


/* ── PRACTICES VIEW ───────────────────────────────── */

.practices-view { padding: 40px 0 80px; }

/* Group by bar */
.groupby-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  padding: 20px 0 14px;
}

.groupby-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.groupby-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--black);
  letter-spacing: -0.01em;
}

.groupby-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.groupby-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-400);
  margin-right: 4px;
}

.chip {
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-500);
  cursor: pointer;
  transition: all 0.12s;
  white-space: nowrap;
  user-select: none;
}
.chip:hover { border-color: var(--gray-400); color: var(--black); }
.chip.active { background: var(--black); border-color: var(--black); color: var(--white); }

/* Practice groups */
.practice-group {
  margin-bottom: 56px;
  border-top: 1px solid var(--gray-200);
  padding-top: 32px;
}

.group-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.group-title-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.group-prefix {
  font-family: var(--font-legend);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--black);
  text-transform: none;
}

.group-title {
  font-size: 13px;
  font-weight: 400;
  font-family: inherit;
  letter-spacing: 0;
  color: var(--gray-500);
}


.group-count {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-400);
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-full);
  padding: 2px 9px;
  margin-left: auto;
}


/* ── PRACTICES GRID ───────────────────────────────── */

.practices-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 4px;
  margin: -4px;
}


/* ── PRACTICE CARD ────────────────────────────────── */

.practice-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  border: none;
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.22s var(--ease), transform 0.22s var(--ease);
  display: flex;
  flex-direction: column;
}

.practice-card:not(.coming-soon):hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.practice-card.coming-soon {
  opacity: 0.5;
  cursor: default;
}


/* Card content */
.card-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.card-stage-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.tag {
  font-size: 11px;
  font-weight: 400;
  white-space: nowrap;
  line-height: 1.4;
  color: var(--gray-400);
}

.tag-stage {
  color: var(--gray-400);
}
.tag-practice {
  color: var(--gray-400);
}
.challenge-practices {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  flex: 1;
}

.tag-subgoal {
  color: var(--gray-400);
}

.card-title {
  font-family: var(--font-legend);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--black);
}

.card-teaser {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid var(--gray-100);
}

.level-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}

.level-prefix {
  font-weight: 700;
}

.level-sep {
  opacity: 0.4;
  font-weight: 400;
}

.level-label {
  font-weight: 400;
}

.level-badge.level-ai-native {
  background: var(--yellow-subtle);
  color: #7A6000;
  border: 1px solid var(--yellow-border);
}

.level-badge.level-ai-builder {
  background: var(--yellow);
  color: #4A3A00;
  border: 1px solid #E8C000;
}

.level-badge.level-dev-enabled {
  background: var(--black);
  color: var(--white);
  border: 1px solid var(--black);
}

.card-cta {
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-400);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color 0.12s;
}

.practice-card:hover .card-cta { color: var(--black); }

.coming-soon-badge {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-400);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-full);
  padding: 3px 8px;
}

/* Empty state */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 0;
  font-size: 15px;
  color: var(--gray-400);
}


/* ── MODAL ────────────────────────────────────────── */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s var(--ease);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--white);
  border-radius: 16px;
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 860px;
  max-height: calc(100vh - 80px);
  position: relative;
  transform: translateY(16px);
  transition: transform 0.25s var(--ease);
  flex-shrink: 0;
  overflow: hidden;
}

.modal-inner {
  overflow-y: auto;
  max-height: calc(100vh - 100px);
  margin: 10px 0;
}

.modal-overlay.open .modal { transform: translateY(0); }

.modal-inner { scrollbar-width: thin; scrollbar-color: var(--gray-300) transparent; }
.modal-inner::-webkit-scrollbar { width: 5px; }
.modal-inner::-webkit-scrollbar-track { background: transparent; margin: 20px 0; }
.modal-inner::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 99px; }
.modal-inner::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 10;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.08);
  color: var(--black);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.12s;
}
.modal-close:hover { background: rgba(0,0,0,0.15); }


/* Modal header */
.modal-header {
  padding: 28px 32px 0;
}

.modal-header-desc {
  font-size: 15px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-600);
  padding-bottom: 28px;
  border-bottom: 1px solid var(--gray-200);
}

/* Tools — sits between body and related */
.modal-tools {
  padding: 0 32px 24px;
  border-top: 1px solid var(--gray-200);
  padding-top: 24px;
}

/* Related — full-width section below the body */
.modal-prereqs {
  padding: 0 32px 32px;
}
.modal-prereqs-inner {
  border-top: 1px solid var(--gray-200);
  padding-top: 24px;
}

.modal-prereqs-heading {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 16px;
}

.modal-prereqs-cols {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.modal-prereqs-group { min-width: 180px; }

.modal-prereqs-none {
  font-size: 14px;
  color: var(--gray-500);
  font-style: italic;
}

.modal-stages {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: nowrap;
  overflow: hidden;
  margin-bottom: 12px;
}

.modal-tag-group {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
}

.modal-tag-group + .modal-tag-group {
  margin-left: 16px;
  padding-left: 16px;
  border-left: 1px solid var(--gray-200);
}

.modal-tag-label {
  font-size: 10px;
  font-weight: 500;
  color: var(--gray-300);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-right: 6px;
}

.modal-tag-group .tag {
  color: var(--gray-600);
  font-weight: 500;
}

.modal-tag-group .tag:not(:last-child)::after {
  content: ',';
  color: var(--gray-600);
  font-weight: 500;
}

.modal-title {
  font-family: var(--font-legend);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.15;
  color: var(--black);
  margin-bottom: 16px;
}

.modal-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 12px;
}

.modal-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--gray-500);
  font-weight: 500;
}

/* Modal body */
.modal-body {
  display: block;
}

.modal-main {
  padding: 32px 32px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.modal-side {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  background: var(--gray-50);
}

/* Section label */
.section-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
  margin-bottom: 6px;
}

/* When to use — short contextual qualifier */
.practice-when {
  font-size: 13px;
  line-height: 1.65;
  color: var(--gray-500);
  border-left: 2px solid var(--gray-200);
  padding-left: 12px;
}

/* How to do it — main actionable content */
.practice-desc,
.practice-how {
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray-700);
}

/* Tools */
.tool-chips { display: flex; flex-wrap: wrap; gap: 7px; }

.tool-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 500;
  padding: 5px 11px;
  border-radius: var(--radius-full);
  border: 1px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-700);
  text-decoration: none;
  transition: all 0.12s;
}
.tool-chip:hover { border-color: var(--gray-400); color: var(--black); }
.tool-chip svg { color: var(--gray-300); }

/* Prerequisites */
.prereq-groups { display: flex; flex-direction: column; gap: 14px; }

.prereq-group-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: 6px;
}

.prereq-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.prereq-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--black);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border-bottom: 1px solid var(--gray-300);
  padding-bottom: 2px;
  transition: border-color 0.12s;
}
.prereq-link:hover { border-color: var(--black); }
.prereq-link svg { color: var(--gray-400); }
.prereq-link--disabled {
  opacity: 0.45;
  border-bottom: none;
  cursor: default;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* Impact */
.impact-goal {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--yellow-text);
  background: var(--yellow-subtle);
  border: 1px solid var(--yellow-border);
  padding: 3px 9px;
  border-radius: var(--radius-full);
  margin-bottom: 8px;
}

.impact-subgoal {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--gray-700);
  margin-bottom: 4px;
}

.impact-arrow { color: var(--gray-300); font-size: 10px; }

/* Success metric */
.success-metric {
  padding: 12px 14px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--gray-700);
  line-height: 1.6;
}

.success-metric-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--gray-400);
  display: block;
  margin-bottom: 5px;
}


/* ── RESOURCES VIEW ───────────────────────────────── */

.resources-view { padding: 40px 0 80px; }

.resources-view h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}

.resources-desc {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 32px;
}

.resources-section { margin-top: 64px; }

.resources-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 48px;
}

.resource-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: inherit;
  transition: all 0.15s var(--ease);
}
.resource-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: var(--gray-300);
}

.resource-type {
  font-size: 10px;
  font-weight: 600;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.resource-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--black);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  letter-spacing: -0.01em;
}

.resource-ext { color: var(--gray-300); flex-shrink: 0; }

.resource-desc {
  font-size: 12px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* Guides section */
.guides-section { margin-top: 16px; }

.guides-desc {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 24px;
}

.guides-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Guide category cards */
.guide-category-card {
  background: var(--white);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius);
  overflow: hidden;
}

.guide-category-card-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--gray-100);
}

.guide-category-heading {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-600);
  margin-bottom: 4px;
}

.guide-category-desc {
  font-size: 13px;
  color: var(--gray-400);
}

/* Guide list items inside category cards */
.guide-list {
  display: flex;
  flex-direction: column;
}

.guide-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 24px;
  border-bottom: 1px solid var(--gray-100);
  text-decoration: none;
  color: inherit;
  transition: background 0.12s;
}
.guide-list-item:last-child { border-bottom: none; }
a.guide-list-item:hover { background: var(--gray-50); }
.guide-list-item--disabled { opacity: 0.45; pointer-events: none; }

.guide-card-tool {
  font-size: 10px;
  font-weight: 600;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  width: 80px;
  flex-shrink: 0;
}

.guide-list-title {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-800);
  line-height: 1.4;
}

.guide-list-arrow {
  color: var(--gray-500);
  font-size: 14px;
  flex-shrink: 0;
}


/* ── SUGGEST BANNER ───────────────────────────────── */

.suggest-inline {
  display: inline-block;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-400);
  text-decoration: none;
  transition: color 0.12s;
}
.suggest-inline:hover { color: var(--black); }

.suggest-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 64px;
  padding: 28px 32px;
  border-radius: var(--radius);
  border: 1px dashed var(--gray-300);
  background: var(--white);
}

.suggest-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--black);
  margin-bottom: 4px;
}

.suggest-sub {
  font-size: 13px;
  color: var(--gray-500);
}

.suggest-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  background: var(--black);
  color: var(--white);
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.15s;
  flex-shrink: 0;
}
.suggest-btn:hover { opacity: 0.8; }


/* ── FOOTER ───────────────────────────────────────── */

footer {
  padding: 24px 0;
  border-top: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

footer p {
  font-size: 11px;
  color: var(--gray-400);
  text-align: center;
}

.footer-slack a {
  color: var(--gray-500);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.footer-slack a:hover { color: var(--black); }


/* ── GUIDE VIEW ───────────────────────────────────── */

.guide-view { padding: 40px 0 80px; max-width: 720px; }

.guide-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-500);
  text-decoration: none;
  margin-bottom: 32px;
  transition: color 0.12s;
}
.guide-back:hover { color: var(--black); }
.guide-back svg { flex-shrink: 0; }

.guide-header { margin-bottom: 36px; }

.guide-type-pill {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--gray-400);
  border: 1px solid var(--gray-200);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.guide-view .guide-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--black);
}

.guide-coming-soon {
  border: 1px dashed var(--gray-300);
  border-radius: var(--radius);
  background: var(--white);
  padding: 48px 32px;
  text-align: center;
  margin-bottom: 40px;
}

.guide-coming-soon-inner { max-width: 360px; margin: 0 auto; }
.guide-coming-soon svg { color: var(--gray-300); margin-bottom: 16px; }

.guide-coming-soon-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 8px;
}

.guide-coming-soon-sub {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
}

.guide-coming-soon-sub a {
  color: var(--gray-700);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.guide-coming-soon-sub a:hover { color: var(--black); }

/* Guide content */
.guide-content { margin-bottom: 48px; }

.guide-intro {
  font-size: 15px;
  color: var(--gray-700);
  line-height: 1.7;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--gray-200);
}

.guide-steps { display: flex; flex-direction: column; gap: 0; }

.guide-step {
  display: flex;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--gray-100);
}
.guide-step:last-child { border-bottom: none; }

.guide-step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--black);
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.guide-step-body { flex: 1; min-width: 0; }

.guide-step-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--black);
  margin-bottom: 6px;
}

.guide-step-text {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.65;
}

.guide-code {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--black);
}

.guide-substeps {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.guide-substep {
  display: flex;
  gap: 14px;
  padding: 14px 16px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
}

.guide-substep-id {
  font-size: 11px;
  font-weight: 700;
  color: var(--gray-400);
  white-space: nowrap;
  padding-top: 1px;
  flex-shrink: 0;
}

.guide-substep-body {
  font-size: 13px;
  color: var(--gray-700);
  line-height: 1.6;
}
.guide-substep-body strong { color: var(--black); }

.guide-note {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  padding: 12px 16px;
  background: #FFFCE8;
  border: 1px solid var(--yellow-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--gray-700);
  line-height: 1.6;
}
.guide-note-icon { flex-shrink: 0; font-size: 14px; }
.guide-note strong { color: var(--black); }

.guide-closing {
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-500);
  padding-top: 24px;
  border-top: 1px solid var(--gray-200);
  margin-top: 8px;
}

.guide-related { border-top: 1px solid var(--gray-200); padding-top: 24px; }

.guide-related-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 12px;
}

.guide-related-list { display: flex; flex-direction: column; gap: 6px; }

.guide-related-practice {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--black);
  background: none;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  cursor: pointer;
  text-align: left;
  transition: all 0.13s;
}
.guide-related-practice:hover {
  border-color: var(--gray-400);
  background: var(--gray-50);
}
.guide-related-practice svg { color: var(--gray-400); flex-shrink: 0; }


/* ── CHALLENGES VIEW ──────────────────────────────── */

.challenges-view { padding: 40px 0 80px; }

.challenges-view h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}

.challenges-desc {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 32px;
}

.challenges-section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-top: 40px;
  margin-bottom: 12px;
}

.challenges-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 48px;
}

.challenge-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  box-shadow: var(--shadow-card);
}

.challenge-card.coming-soon { opacity: 0.55; }
.challenge-card.complete { opacity: 0.5; }
.challenge-card.featured {
  border-color: var(--yellow-border);
  box-shadow: 0 0 0 1px var(--yellow-border), var(--shadow-card);
}
.challenge-card.featured:hover {
  box-shadow: 0 0 0 1px var(--yellow-border), var(--shadow-card-hover);
}

.now-live-badge {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--yellow-text);
  background: var(--yellow);
  border-radius: var(--radius-full);
  padding: 3px 8px;
  white-space: nowrap;
}

.completed-badge {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-400);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-full);
  padding: 3px 8px;
}

.challenge-card.clickable {
  cursor: pointer;
  transition: box-shadow 0.22s var(--ease), transform 0.22s var(--ease);
}
.challenge-card.clickable:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.challenge-card-top { display: flex; flex-direction: column; gap: 8px; }

.challenge-stage-row { display: flex; flex-wrap: wrap; gap: 4px; }

.challenge-title {
  font-family: var(--font-legend);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--black);
}

.challenge-desc {
  font-size: 13px;
  color: var(--gray-700);
  line-height: 1.55;
}

.challenge-card-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.challenge-time {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--gray-500);
}

.challenge-related {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-500);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: color 0.13s;
}
.challenge-related:hover { color: var(--black); }
.challenge-related svg { color: currentColor; }


/* ── CHALLENGE PAGE ───────────────────────────────── */

.challenge-page { padding: 40px 0 80px; max-width: 720px; }

.challenge-page-header { margin-bottom: 24px; }

.challenge-page-meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.challenge-page-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.15;
  color: var(--black);
}

.challenge-page-desc {
  font-size: 15px;
  color: var(--gray-700);
  line-height: 1.7;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--gray-200);
}

.challenge-page-related { margin-top: 8px; }

.challenge-page-related-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.challenge-page-objectives {
  margin-bottom: 40px;
  padding: 24px 28px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
}

.challenge-page-objectives-heading {
  font-size: 14px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 16px;
}

.challenge-page-objectives-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.challenge-page-objective {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.5;
}

.challenge-page-objective svg {
  color: var(--gray-400);
  flex-shrink: 0;
  margin-top: 1px;
}

.challenge-page-parts { margin-bottom: 40px; }

.challenge-page-parts-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin-top: 12px;
}

.challenge-page-part {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  background: var(--white);
  text-decoration: none;
  color: inherit;
  transition: all 0.13s;
  margin-bottom: 6px;
}

.challenge-page-part:hover {
  border-color: var(--gray-400);
  background: var(--gray-50);
}

.challenge-page-part-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  font-size: 11px;
  font-weight: 700;
  color: var(--gray-500);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.challenge-page-part-label {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  color: var(--black);
}

.challenge-page-part svg { color: var(--gray-400); flex-shrink: 0; }

.challenge-page-part--disabled {
  opacity: 0.5;
  cursor: default;
  pointer-events: none;
}


/* ── CHALLENGE PART PAGE ──────────────────────────── */

.challenge-part-page { padding: 40px 0 80px; max-width: 720px; }

.challenge-step-nav {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: flex-end;
}

.challenge-step-next {
  all: unset;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  background: var(--black);
  padding: 10px 22px;
  border-radius: 100px;
  transition: background 0.15s var(--ease);
}

.challenge-step-next:hover { background: var(--gray-800); }

.challenge-part-header { margin-bottom: 28px; }

.challenge-part-section-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-top: 20px;
  margin-bottom: 8px;
}

.challenge-part-goals {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 4px;
}

.challenge-part-goal {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.5;
  padding-left: 12px;
  position: relative;
}

.challenge-part-goal::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--gray-400);
  font-size: 18px;
  line-height: 1.2;
}

.challenge-part-objectives {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 0;
}

.challenge-part-objective {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.5;
}

.challenge-part-objective svg {
  color: var(--gray-400);
  flex-shrink: 0;
  margin-top: 1px;
}

.challenge-part-tabs-intro {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 16px;
  line-height: 1.6;
}

.challenge-part-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 8px;
}

.challenge-part-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--gray-200);
  margin-bottom: 36px;
  overflow-x: auto;
  scrollbar-width: none;
}
.challenge-part-tabs::-webkit-scrollbar { display: none; }

.challenge-part-tab {
  all: unset;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-500);
  padding: 10px 18px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color 0.13s, border-color 0.13s;
}
.challenge-part-tab:hover { color: var(--gray-700); border-bottom-color: var(--gray-300); }
.challenge-part-tab.active { color: var(--black); border-bottom-color: var(--black); font-weight: 600; }

.challenge-part-panels {}

.challenge-part-panel.hidden { display: none; }

.challenge-part-content {
  font-size: 15px;
  color: var(--gray-700);
  line-height: 1.7;
}

.challenge-content-intro {
  font-size: 15px;
  color: var(--gray-700);
  line-height: 1.7;
  margin-bottom: 20px;
}

.challenge-content-lead {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
  line-height: 1.7;
  margin-bottom: 10px;
}

.challenge-content-body {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.7;
  margin-bottom: 14px;
}

.challenge-content-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  padding-left: 4px;
}

.challenge-content-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.6;
}

.challenge-content-list li::before {
  content: '·';
  color: var(--gray-400);
  font-size: 18px;
  line-height: 1.3;
  flex-shrink: 0;
}

.challenge-content-h2 {
  font-family: var(--font-legend);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--black);
  margin-top: 40px;
  margin-bottom: 12px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-200);
}

.challenge-content-h3 {
  font-family: var(--font-legend);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--black);
  margin-top: 28px;
  margin-bottom: 10px;
}

.challenge-content-note { margin-top: 4px; }

.challenge-part-content img,
.guide-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin-top: 16px;
  margin-bottom: 16px;
  border-radius: 6px;
}

.challenge-content-h2--first { margin-top: 0; padding-top: 0; border-top: none; }

.challenge-content-link {
  color: var(--black);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--gray-300);
  transition: text-decoration-color 0.12s;
}
.challenge-content-link:hover { text-decoration-color: var(--black); }

.challenge-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0 0 20px 0;
}

.challenge-option {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.challenge-option-label {
  font-size: 13px;
  font-weight: 700;
  margin: 0 0 6px 0;
}

.challenge-option-recommended {
  font-weight: 400;
  opacity: 0.6;
}

.challenge-option .challenge-content-body {
  margin: 0;
}

.challenge-prompt-block {
  margin: 24px 0;
  border: 1px solid var(--yellow-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.challenge-prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--yellow-subtle);
  border-bottom: 1px solid var(--yellow-border);
  padding: 8px 8px 8px 16px;
}

.challenge-prompt-copy {
  all: unset;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 600;
  color: var(--yellow-text);
  padding: 4px 10px;
  border-radius: 6px;
  transition: background 0.15s;
}

.challenge-prompt-copy:hover {
  background: var(--yellow-border);
}

.challenge-prompt-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--yellow-text);
}

.challenge-prompt-body {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--white);
}

.challenge-prompt-body p {
  font-size: 13px;
  color: var(--gray-700);
  line-height: 1.65;
}

.challenge-img-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  aspect-ratio: 16 / 7;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  margin: 20px 0;
  color: var(--gray-400);
}

.challenge-img-placeholder span {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.challenge-kbd {
  display: inline-block;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 6px;
  background: var(--gray-100);
  border: 1px solid var(--gray-300);
  border-radius: 4px;
  color: var(--gray-700);
  vertical-align: baseline;
}

/* Code concepts grid */
.code-concepts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 24px 0;
}

.code-concept {
  padding: 16px 18px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.code-concept-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}

.code-concept-lang {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
  font-weight: 700;
  color: var(--black);
}

.code-concept-arrow { font-size: 11px; color: var(--gray-300); }

.code-concept-role {
  font-size: 12px;
  font-weight: 600;
  color: var(--black);
}

.code-concept-analogy {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-400);
}

.code-concept-desc {
  font-size: 12px;
  color: var(--gray-600, #555);
  line-height: 1.55;
}

@media (max-width: 600px) {
  .code-concepts { grid-template-columns: 1fr; }
}


/* Experiment options */
.experiment-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 20px 0 28px;
}

.experiment-option {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  padding: 16px 18px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.experiment-option:hover {
  border-color: var(--gray-300);
  box-shadow: var(--shadow-card);
}

.experiment-option-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.experiment-option-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 700;
  color: var(--gray-700);
  flex-shrink: 0;
}

.experiment-option-header strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--black);
}

.experiment-option-desc {
  font-size: 13px;
  color: var(--gray-700);
  line-height: 1.6;
  margin-bottom: 12px;
}

.experiment-option-prompt {
  font-size: 12.5px;
  color: var(--gray-700);
  line-height: 1.65;
  background: var(--yellow-subtle);
  border: 1px solid var(--yellow-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-style: italic;
}

/* ── RESPONSIVE ───────────────────────────────────── */

@media (max-width: 1100px) {
  .practices-grid   { grid-template-columns: repeat(2, 1fr); }
  .resources-grid   { grid-template-columns: repeat(3, 1fr); }
}


@media (max-width: 768px) {
  .container        { padding: 0 20px; }
  .view-panel       { padding: 20px 24px; }
  .view-panel-label { font-size: 16px; }
  .view-nav-buttons { grid-template-columns: 1fr; }
  .view-intro-label { font-size: 36px; letter-spacing: -0.04em; }
  .view-intro-sub { font-size: 15px; }
  .practices-grid   { grid-template-columns: 1fr; }
  .resources-grid   { grid-template-columns: repeat(2, 1fr); }
  .modal-overlay    { padding: 0; align-items: flex-end; }
  .modal            { border-radius: 16px 16px 0 0; max-height: 90vh; overflow-y: auto; }
}

@media (max-width: 480px) {
  .resources-grid { grid-template-columns: 1fr; }
}