/* ==========================================================================
   Lesson & Task Page Styles (Zero Horizontal Overflow & Clean Reading Ergonomics)
   ========================================================================== */

/* Subnav Tabs (Section Navigation) */
.subnav-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto !important;
  -webkit-overflow-scrolling: touch;
  padding: 0 20px;
  scrollbar-width: none;
  border-top: 1px solid var(--divider);
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
}

.subnav-tabs::-webkit-scrollbar {
  display: none;
}

.subnav-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
  flex-shrink: 0;
}

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

.subnav-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

/* Reading Progress Bar */
.reading-progress-bar {
  position: absolute;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--primary);
  width: 0%;
  transition: width 80ms ease-out;
  z-index: 55;
}

/* Hero Section */
.hero {
  padding: 36px 0 28px;
  width: 100% !important;
  box-sizing: border-box !important;
}

.hero-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: start;
  width: 100% !important;
  box-sizing: border-box !important;
}

.hero-grid > * {
  min-width: 0 !important;
  max-width: 100% !important;
}

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) !important;
  }
}

.kicker, .eyebrow {
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  display: inline-block;
  word-break: break-word;
}

.h1 {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin: 10px 0 14px;
  color: var(--text-primary);
  word-break: break-word !important;
}

.h1 .accent, .h1 em {
  font-style: normal;
  color: var(--primary);
}

.lede, .lead {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 58ch;
  margin-bottom: 20px;
  word-break: break-word;
}

.lede-full {
  max-width: none !important;
}

.cta-row, .buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* Status Card Component */
.statuscard, .terminal {
  padding: 0;
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-lg);
  overflow: hidden !important;
  box-shadow: var(--shadow-md);
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.statuscard-head, .termbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--code-border);
  background-color: var(--code-header);
  font-size: 0.78rem;
  color: var(--code-muted);
  font-family: var(--font-mono);
  width: 100% !important;
  box-sizing: border-box !important;
}

.termbar {
  gap: 6px;
  justify-content: flex-start;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: #475569;
}

.statuscard-body {
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.8;
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.sc-line {
  display: flex;
  gap: 8px;
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
}

.sc-key {
  color: var(--code-muted);
  width: 90px;
  flex: 0 0 90px;
}

.sc-val {
  color: var(--code-text);
  flex: 1 1 auto;
  min-width: 0 !important;
  word-break: break-word !important;
  overflow-wrap: anywhere !important;
}

@media (max-width: 480px) {
  .sc-line {
    flex-direction: column !important;
    gap: 2px;
  }
  .sc-key {
    width: auto !important;
    flex: none;
    font-size: 0.72rem;
  }
}

.pulse-wrap {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--emerald);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.metrics-row {
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px dashed var(--code-border);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(75px, 1fr)) !important;
  gap: 8px;
  width: 100% !important;
  box-sizing: border-box !important;
}

.metric .n {
  font-size: 1rem;
  font-weight: 700;
  color: var(--code-text);
}

.metric .l {
  font-size: 0.68rem;
  color: var(--code-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Sections & Grid Layouts */
.section {
  padding: 36px 0;
  border-top: 1px solid var(--border-subtle);
  width: 100% !important;
  box-sizing: border-box !important;
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 20px;
  width: 100%;
}

.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  word-break: break-word !important;
}

.two-col {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  align-items: start;
  width: 100% !important;
  box-sizing: border-box !important;
}

.two-col > * {
  min-width: 0 !important;
  max-width: 100% !important;
}

.grid2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  width: 100% !important;
  box-sizing: border-box !important;
}

.grid3, .three-col {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  width: 100% !important;
  box-sizing: border-box !important;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  width: 100% !important;
  box-sizing: border-box !important;
}

.grid2 > *, .grid3 > *, .three-col > *, .mini-grid > * {
  min-width: 0 !important;
  max-width: 100% !important;
}

@media (max-width: 860px) {
  .two-col, .grid2, .grid3, .three-col, .workflow {
    grid-template-columns: minmax(0, 1fr) !important;
  }
}

.stack-gap-12 {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100% !important;
  box-sizing: border-box !important;
}

.p-md {
  padding: 18px;
  width: 100% !important;
  box-sizing: border-box !important;
}

.flow-title {
  margin: 0 0 12px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.feature, .card {
  padding: 18px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-fast);
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.feature:hover, .card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-sm);
}

.feature h3, .card h3 {
  margin: 0 0 4px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  word-break: break-word !important;
}

.feature p, .card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.86rem;
  line-height: 1.6;
}

.icon {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.callout {
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  background-color: var(--sky-light);
  border: 1px solid var(--sky-border);
  margin-top: 18px;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.callout h3 {
  margin: 0 0 4px;
  color: var(--sky);
  font-size: 0.95rem;
  font-weight: 700;
}

.callout p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.86rem;
  line-height: 1.6;
}

.compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden !important;
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-xs);
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.compare > div {
  padding: 20px;
  box-sizing: border-box !important;
  min-width: 0 !important;
}

.compare .manual {
  background-color: var(--bg-surface);
}

.compare .terraform {
  background-color: #faf5ff;
  border-left: 1px solid var(--border-subtle);
}

.compare h3 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 0.95rem;
  font-weight: 700;
}

.compare ul {
  padding-left: 18px;
  color: var(--text-secondary);
  font-size: 0.86rem;
  line-height: 1.7;
}

@media (max-width: 800px) {
  .compare {
    grid-template-columns: minmax(0, 1fr) !important;
  }
  .compare .terraform {
    border-left: none !important;
    border-top: 1px solid var(--border-subtle) !important;
  }
}

.example {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden !important;
  margin-top: 18px;
  box-shadow: var(--shadow-xs);
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.example-head {
  padding: 12px 18px;
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  flex-wrap: wrap;
  gap: 8px;
}

.example-body {
  padding: 18px;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.scenario {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-word !important;
}

.arrow {
  text-align: center;
  color: var(--primary);
  font-size: 1.4rem;
  margin: 6px 0;
}

.code {
  background-color: var(--code-bg);
  color: var(--code-text);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  overflow-x: auto !important;
  -webkit-overflow-scrolling: touch;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.75;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.workflow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
  align-items: stretch;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.step {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: center;
  box-shadow: var(--shadow-xs);
  box-sizing: border-box !important;
  min-width: 0 !important;
}

.step b {
  display: block;
  color: var(--primary);
  font-size: 0.9rem;
  margin-bottom: 3px;
}

.step small {
  color: var(--text-muted);
  font-size: 0.76rem;
}

.type-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.type-block {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden !important;
  box-shadow: var(--shadow-xs);
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.type-block-head {
  padding: 9px 12px;
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.type-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.type-desc {
  padding: 10px 12px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.provider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.provider-card {
  padding: 14px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.pname {
  font-weight: 700;
  color: var(--primary);
  font-size: 0.9rem;
  margin-bottom: 3px;
}

.puse {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.chain {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin: 14px 0;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.chain-node {
  padding: 6px 12px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  box-shadow: var(--shadow-xs);
}

.chain-arrow {
  color: var(--primary);
  font-weight: bold;
}

.tag, .file-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--primary);
  background-color: var(--primary-light);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
}

.pill-table {
  display: inline-block;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
}

.check { color: var(--emerald); font-weight: 700; }
.no, .danger { color: var(--rose); font-weight: 700; }
.warn, .changed { color: var(--amber); font-weight: 700; }
.skip { color: var(--text-muted); }

.flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.flow li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border-subtle);
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.flow li:last-child {
  border-bottom: none;
}

.flow p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-primary);
  line-height: 1.55;
  word-break: break-word !important;
}

.flow small {
  display: block;
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-top: 3px;
  font-family: var(--font-mono);
  word-break: break-word !important;
}

.log {
  padding: 14px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.log + .log {
  border-top: 1px solid var(--border-subtle);
}

.lvl {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  flex: none;
  margin-top: 2px;
}

.lvl-info { color: var(--primary); background: var(--primary-light); }
.lvl-ok { color: var(--emerald); background: var(--emerald-light); }
.lvl-warn { color: var(--amber); background: var(--amber-light); }
.lvl-danger, .lvl-crit { color: var(--rose); background: var(--rose-light); }
.lvl-qa { color: var(--violet); background: var(--violet-light); }

.log p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  word-break: break-word !important;
}

.c-key, .purple { color: #818cf8; font-weight: 500; }
.c-str, .green { color: #86efac; }
.c-cmt, .muted { color: #64748b; font-style: italic; }
.c-mod, .c-attr { color: #f472b6; font-weight: 500; }
.c-dash { color: #94a3b8; }
.c-var, .yellow { color: #fbbf24; }
.c-bool, .c-num { color: #38bdf8; }
.blue { color: #60a5fa; }

.lesson-pagination {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 14px;
  width: 100% !important;
  box-sizing: border-box !important;
}

@media (max-width: 600px) {
  .lesson-pagination {
    grid-template-columns: minmax(0, 1fr) !important;
  }
  .pagination-card.next {
    text-align: left;
    align-items: flex-start;
  }
}

.pagination-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
  text-decoration: none;
  box-shadow: var(--shadow-xs);
  box-sizing: border-box !important;
  width: 100% !important;
  min-width: 0 !important;
}

.pagination-card:hover {
  border-color: var(--primary);
  background-color: var(--bg-hover);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.pagination-card.next {
  text-align: right;
  align-items: flex-end;
}

.pagination-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.pagination-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  word-break: break-word !important;
}

.pagination-card:hover .pagination-title {
  color: var(--primary);
}