/**
 * TICKET-303: Homepage Premium Retrofit
 *
 * Loaded only on the homepage (is_front_page()).
 * Applies the dual-theme ritual-entry (dark) / drafting-table (light) treatment.
 *
 * Existing markup is preserved — this layer adds premium visual treatment
 * on top of the existing hp-* classes from styles.css.
 *
 * Rules:
 *  - One dominant primary action above the fold at all times
 *  - Supporting areas are visually secondary
 *  - No fake live counters
 *  - Light-mode drafting grid is homepage-only and extremely faint
 */

/* ─── Hero section ───────────────────────────────────────────────────────────── */

.hp-hero {
  background-color: var(--bg-page);
  border-bottom: 1px solid var(--border-subtle);
  padding: 5rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Dark mode: subtle radial glow behind the headline — atmosphere only */
.hp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 60% 50% at 50% 0%,
    rgba(212, 175, 55, 0.06) 0%,
    transparent 70%
  );
  pointer-events: none;
}

/* Light mode: override glow with a very faint drafting grid */
html.light-mode .hp-hero::before {
  background:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
}

html.light-mode .hp-hero {
  background-color: var(--vellum-base);
}

.hp-hero__inner {
  position: relative; /* above ::before */
}

.hp-hero__headline {
  font-family: var(--font-gnosis);
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

/* Dark: carved, high-authority look with subtle gold glow */
.hp-hero__headline {
  text-shadow: 0 0 40px rgba(212, 175, 55, 0.15);
}

/* Light: printed/letterpress — no glow */
html.light-mode .hp-hero__headline {
  text-shadow: none;
  color: var(--ink-blueprint);
}

.hp-hero__tagline {
  font-family: var(--font-logic);
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

html.light-mode .hp-hero__tagline {
  color: var(--ink-slate);
}

/* ─── Hero CTA buttons ───────────────────────────────────────────────────────── */

.hp-btn--primary {
  background-color: var(--accent);
  color: var(--ink-nocturnal);
  border-color: var(--accent);
  font-family: var(--font-logic);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
}

html.light-mode .hp-btn--primary {
  color: #fff;
  background-color: var(--amber-logic);
  border-color: var(--amber-logic);
}

.hp-btn--primary:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  color: var(--ink-nocturnal);
  text-decoration: none;
  opacity: 1;
}

html.light-mode .hp-btn--primary:hover {
  color: #fff;
}

.hp-btn--secondary {
  background-color: transparent;
  color: var(--accent);
  border-color: var(--border-subtle);
  font-family: var(--font-logic);
  letter-spacing: 0.04em;
}

html.light-mode .hp-btn--secondary {
  color: var(--amber-logic);
  border-color: var(--line-soft);
}

.hp-btn--secondary:hover {
  border-color: var(--accent);
  background-color: var(--accent-glow);
  text-decoration: none;
  opacity: 1;
}

.hp-btn--ghost {
  color: var(--text-muted);
  border-color: var(--border-subtle);
  font-family: var(--font-logic);
}

.hp-btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--accent);
  text-decoration: none;
  opacity: 1;
}

/* ─── Inline solver section ──────────────────────────────────────────────────── */

.hp-solver {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

html.light-mode .hp-solver {
  background-color: var(--surface-paper);
}

.hp-solver__heading {
  font-family: var(--font-gnosis);
  letter-spacing: 0.12em;
  color: var(--text-primary);
  border-bottom: none;
  padding-bottom: 0;
}

html.light-mode .hp-solver__heading {
  color: var(--ink-blueprint);
}

.hp-solver__subtext {
  font-family: var(--font-logic);
  font-size: 0.875rem;
  color: var(--text-muted);
  background-color: var(--bg-panel);
  border-left: 3px solid var(--accent);
  border-radius: 0 3px 3px 0;
}

html.light-mode .hp-solver__subtext {
  background-color: var(--amber-soft);
  border-left-color: var(--amber-logic);
  color: var(--ink-slate);
}

.hp-solver__subtext code {
  font-family: var(--font-logic);
  background-color: rgba(212, 175, 55, 0.12);
  color: var(--accent);
  padding: 1px 4px;
  border-radius: 2px;
  font-size: 0.9em;
}

html.light-mode .hp-solver__subtext code {
  background-color: rgba(180, 83, 9, 0.1);
  color: var(--amber-logic);
}

/* Submit button — premium portal treatment */
.hp-solver__submit {
  font-family: var(--font-logic);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background-color: var(--accent);
  color: var(--ink-nocturnal);
  border: none;
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.2);
  transition:
    background-color var(--dur-fast),
    box-shadow       var(--dur-fast);
}

html.light-mode .hp-solver__submit {
  background-color: var(--amber-logic);
  color: #fff;
  box-shadow: none;
}

.hp-solver__submit:hover:not(:disabled) {
  background-color: var(--primary-dark);
  box-shadow: 0 0 28px rgba(212, 175, 55, 0.35);
}

html.light-mode .hp-solver__submit:hover:not(:disabled) {
  background-color: var(--primary-dark);
  box-shadow: none;
}

/* Pattern input cells — premium portal feel */
.hp-solver .inputs-container input {
  background-color: var(--bg-panel);
  color: var(--text-primary);
  border-color: var(--border-subtle);
  font-family: var(--font-logic);
  font-size: 1rem;
  font-weight: 600;
  transition:
    border-color     var(--dur-fast),
    background-color var(--dur-fast),
    box-shadow       var(--dur-fast);
}

.hp-solver .inputs-container input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
  outline: none;
}

html.light-mode .hp-solver .inputs-container input {
  background-color: var(--surface-paper);
  color: var(--ink-blueprint);
  border-color: var(--line-soft);
}

html.light-mode .hp-solver .inputs-container input:focus {
  border-color: var(--amber-logic);
  box-shadow: 0 0 0 2px var(--amber-soft);
}

/* ─── No-result state ─────────────────────────────────────────────────────────── */

.hp-no-result {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
}

html.light-mode .hp-no-result {
  background-color: var(--vellum-base);
  border-color: var(--line-soft);
}

.hp-no-result__text {
  color: var(--text-muted);
  font-family: var(--font-logic);
  font-size: 0.9rem;
}

/* ─── Trust teaser ───────────────────────────────────────────────────────────── */

.hp-trust {
  background-color: var(--bg-page);
  border-bottom: 1px solid var(--border-subtle);
}

html.light-mode .hp-trust {
  background-color: var(--vellum-base);
}

.hp-trust__step-num {
  background-color: var(--accent);
  color: var(--ink-nocturnal);
  font-family: var(--font-gnosis);
}

html.light-mode .hp-trust__step-num {
  background-color: var(--amber-logic);
  color: #fff;
}

.hp-trust__dict-item {
  background-color: var(--bg-surface);
  border-color: var(--border-subtle);
}

html.light-mode .hp-trust__dict-item {
  background-color: var(--surface-paper);
  border-color: var(--line-soft);
}

/* ─── Path cards ─────────────────────────────────────────────────────────────── */

.hp-paths {
  background-color: var(--bg-surface);
}

html.light-mode .hp-paths {
  background-color: var(--surface-paper);
}

.hp-path-card {
  background-color: var(--bg-panel);
  border-color: var(--border-subtle);
  transition:
    box-shadow   var(--dur-fast),
    border-color var(--dur-fast);
}

.hp-path-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

html.light-mode .hp-path-card {
  background-color: var(--vellum-base);
  border-color: var(--line-soft);
}

html.light-mode .hp-path-card:hover {
  border-color: var(--amber-logic);
}

/* ─── Session history ────────────────────────────────────────────────────────── */

.hp-session-history {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

html.light-mode .hp-session-history {
  background-color: var(--surface-paper);
}

/* ─── TICKET-322: Homepage Explainer — Structured Content Hub ────────────────── */

.hp-explainer {
  padding: 4rem 0 3rem;
  border-top: 1px solid var(--border-subtle);
}

html.light-mode .hp-explainer {
  border-top-color: var(--line-soft);
}

.hp-explainer__inner {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

/* ─── Section ─── */

.hp-explainer__section {
  scroll-margin-top: 5rem;
}

.hp-explainer__heading {
  font-family: var(--font-gnosis);
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.5rem;
  margin-bottom: 1.25rem;
  line-height: 1.25;
}

html.light-mode .hp-explainer__heading {
  color: var(--amber-logic);
  border-bottom-color: var(--line-soft);
}

.hp-explainer__body p,
.hp-explainer__body li,
.hp-explainer__body dd {
  font-family: var(--font-logic);
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0.875rem;
}

html.light-mode .hp-explainer__body p,
html.light-mode .hp-explainer__body li,
html.light-mode .hp-explainer__body dd {
  color: var(--ink-slate);
}

.hp-explainer__body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

html.light-mode .hp-explainer__body a {
  color: var(--amber-logic);
}

/* ─── Inline examples ─── */

.hp-explainer__examples {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 1rem 0;
}

.hp-explainer__examples li {
  background-color: var(--bg-panel);
  border-left: 3px solid var(--accent);
  padding: 0.5rem 0.875rem;
  border-radius: 0 3px 3px 0;
  margin-bottom: 0;
}

html.light-mode .hp-explainer__examples li {
  background-color: var(--vellum-base);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--amber-logic);
}

.hp-explainer__body code {
  font-family: var(--font-logic);
  font-size: 0.875em;
  background-color: var(--bg-panel);
  color: var(--accent);
  padding: 0.1rem 0.35rem;
  border-radius: 2px;
}

html.light-mode .hp-explainer__body code {
  background-color: var(--amber-soft, rgba(180,83,9,0.08));
  color: var(--amber-logic);
}

/* ─── Modes DL ─── */

.hp-explainer__modes {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1rem 0;
}

.hp-explainer__mode {
  background-color: var(--bg-panel);
  border-left: 3px solid var(--accent);
  padding: 0.875rem 1.125rem;
  border-radius: 0 3px 3px 0;
}

html.light-mode .hp-explainer__mode {
  background-color: var(--vellum-base);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--amber-logic);
}

.hp-explainer__mode dt {
  font-family: var(--font-logic);
  font-size: 0.9375rem;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

html.light-mode .hp-explainer__mode dt {
  color: var(--ink-blueprint);
}

/* ─── Strategy list ─── */

.hp-explainer__strategy-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-left: 0;
  list-style: none;
  counter-reset: strategy;
}

.hp-explainer__strategy-list li {
  counter-increment: strategy;
  /* TICKET-327: block + absolute-positioned ::before prevents the grid
     from splitting <strong> and its sibling text node into separate
     grid items (which caused word-by-word stacking in the 2rem column). */
  display: block;
  position: relative;
  padding-left: 2.875rem; /* 2rem number slot + 0.875rem gap */
  margin-bottom: 0;
}

.hp-explainer__strategy-list li::before {
  content: counter(strategy);
  position: absolute;
  left: 0;
  top: 0.125rem;
  background-color: var(--accent);
  color: var(--ink-nocturnal);
  width: 1.875rem;
  height: 1.875rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-gnosis);
  font-weight: 700;
  font-size: 0.8rem;
}

html.light-mode .hp-explainer__strategy-list li::before {
  background-color: var(--amber-logic);
  color: #fff;
}

/* ─── Mistakes list ─── */

.hp-explainer__mistakes {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hp-explainer__mistakes li {
  padding-left: 1.25rem;
  border-left: 2px solid var(--border-subtle);
  margin-bottom: 0;
}

html.light-mode .hp-explainer__mistakes li {
  border-left-color: var(--line-soft);
}

/* ─── Dictionary guidance DL ─── */

.hp-explainer__dict-guidance {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  margin: 1rem 0;
}

.hp-explainer__dict-entry {
  background-color: var(--bg-panel);
  padding: 0.875rem 1.125rem;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}

html.light-mode .hp-explainer__dict-entry {
  background-color: var(--vellum-base);
  border-color: var(--line-soft);
}

.hp-explainer__dict-entry dt {
  font-family: var(--font-logic);
  font-size: 0.9375rem;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

html.light-mode .hp-explainer__dict-entry dt {
  color: var(--ink-blueprint);
}

/* ─── Comparison list ─── */

.hp-explainer__comparison {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.hp-explainer__comparison li {
  padding: 0.875rem 1rem 0.875rem 1.125rem;
  background-color: var(--bg-panel);
  border-left: 3px solid var(--border-subtle);
  border-radius: 0 3px 3px 0;
  margin-bottom: 0;
}

.hp-explainer__comparison li:last-child {
  border-left-color: var(--accent);
}

html.light-mode .hp-explainer__comparison li {
  background-color: var(--vellum-base);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--line-soft);
}

html.light-mode .hp-explainer__comparison li:last-child {
  border-left-color: var(--amber-logic);
}

/* ─── Mobile ─── */

@media (max-width: 640px) {
  .hp-explainer__inner {
    gap: 2.25rem;
    padding: 0 1rem;
  }

  .hp-explainer {
    padding: 2.5rem 0 2rem;
  }

  .hp-explainer__strategy-list li {
    padding-left: 2.375rem; /* 1.75rem number slot + 0.625rem gap */
  }

  .hp-explainer__strategy-list li::before {
    width: 1.625rem;
    height: 1.625rem;
  }
}