/* =====================================================================
 * LAYOUT: tool-portal-light
 * Light counterpart to tool-portal-dark. Same structural class contract.
 * Grammar: ink on warm paper, flat, 1px rules, serif headings, generous
 * whitespace. Three page shapes: portal/index grids, tool workspace,
 * article/guide reading column.
 *
 * Renderer contract (identical to tool-portal-dark / brochure-formal):
 *   - MUST NOT declare --section-* defaults; the renderer appends them
 *     after rendering based on palette luminance.
 *   - Renderer-managed surface classes MUST be surface-coloured here:
 *       .features-section, .services-section, .differentiators-section,
 *       .about-section, .faq-section
 *   - Element rules use var(--section-*, var(--color-*)) so dark callout
 *     sections can override per container without restating rules.
 * ===================================================================== */

:root {
  /* ── Palette — LIGHT fallbacks (palette vars override) ── */
  --color-primary:        #1A1816;
  --color-primary-hover:  #000000;
  --color-primary-text:   #ffffff;
  --color-secondary:      #4A4540;
  --color-accent:         #A8391A;
  --color-background:     #EFE7D6;
  --color-surface:        #E8DFCC;
  --color-surface-alt:    #e9e4d8;
  --color-text:           #1A1816;
  --color-text-muted:     #837C72;
  --color-border:         #C8BFB0;
  --color-hairline:       #d9d3c7;
  --color-card-bg:        #fffdf8;
  --color-header-bg:      #faf8f3;
  --color-header-text:    #1a1a1a;
  --color-footer-bg:      #f1ede4;
  --color-footer-text:    #1a1a1a;
  --color-code-bg:        #f1ede4;
  --color-callout-bg:     rgba(168,57,26,0.06);
  --color-callout-border: #a8391a;

  /* ── Typography — serif display, clean sans body ── */
  --font-body:        'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading:     'Fraunces', 'Times New Roman', Georgia, serif;
  --font-mono:        'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --font-size-base:   16px;
  --line-height-base: 1.65;

  /* ── Structure — flat, editorial, generous ── */
  --container-max:    1180px;
  --container-pad-x:  1.5rem;
  --reading-max:      720px;
  --section-pad-y:    5rem;
  --section-pad-y-sm: 3rem;
  --radius:           2px;
  --radius-sm:        2px;
  --grid-gap:         1.5rem;
  --card-pad:         1.5rem;
  --transition:       150ms ease;

  
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; display: flex; flex-direction: column;
  font-family: var(--font-body); font-size: var(--font-size-base);
  line-height: var(--line-height-base); color: var(--color-text);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
main { flex: 1; }
img { max-width: 100%; height: auto; display: block; }
code, pre, kbd, samp { font-family: var(--font-mono); }

/* ── Headings (serif) + text inheritance ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--section-heading, var(--color-text));
  margin: 0 0 1rem; line-height: 1.2; font-weight: 600; letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.25rem, 4.5vw, 3.25rem); font-weight: 600; }
h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.05rem; }
p, li, blockquote { color: var(--section-text, inherit); margin: 0 0 1rem; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; }

/* ── Primitives ── */
.container { max-width: var(--container-max); margin-inline: auto; padding-inline: var(--container-pad-x); width: 100%; }
.container--reading { max-width: var(--reading-max); }
.section { padding-block: var(--section-pad-y); }
.section + .section { border-top: 1px solid var(--color-hairline); }

/* ── Header — light, low chrome, hairline rule ── */
.site-header {
  background: var(--color-header-bg); color: var(--color-header-text);
  border-bottom: 1px solid var(--color-border); position: sticky; top: 0; z-index: 1000;
}
.header-container {
  max-width: var(--container-max); margin-inline: auto;
  padding: 1rem var(--container-pad-x);
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
}
.logo { font-family: var(--font-heading); font-size: 1.25rem; font-weight: 600; color: var(--color-header-text); text-decoration: none; letter-spacing: -0.01em; }
.logo:hover { text-decoration: none; }
.logo-img { max-height: 34px; width: auto; }
.main-nav ul { display: flex; gap: 1.75rem; list-style: none; margin: 0; padding: 0; }
.main-nav a { color: var(--color-header-text); font-weight: 500; font-size: 0.9rem; padding: 0.5rem 0; }
.main-nav a:hover, .main-nav a.active { color: var(--color-accent); text-decoration: none; }
.mobile-menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; min-width: 44px; min-height: 44px; color: var(--color-header-text); }
.mobile-menu-toggle span { display: block; width: 22px; height: 2px; background: currentColor; margin: 5px 0; }

/* ── Hero — typographic, not imagery-driven ── */
.hero-section { padding-block: calc(var(--section-pad-y) * 1.15); }
.hero-section .container { max-width: 880px; }
.hero-section h1 { font-size: clamp(2.4rem, 5vw, 3.5rem); margin-bottom: 1.25rem; letter-spacing: -0.02em; }
.hero-subtitle, .hero-section .lead { font-size: 1.2rem; color: var(--section-text-muted, var(--color-text-muted)); margin: 0 0 2rem; max-width: 640px; line-height: 1.5; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* ── Renderer-managed surface sections (MUST be surface-coloured) ── */
.features-section, .services-section, .differentiators-section,
.about-section, .faq-section { background: var(--color-surface); }

/* ── Portal/index grids — bordered cards, flat ── */
.features-grid, .services-grid, .differentiators-grid,
.tools-grid, .guides-grid, .games-grid, .reports-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--grid-gap); margin-top: 2rem;
}
.feature-card, .service-card, .differentiator-card,
.tool-card, .guide-card, .game-card, .report-card {
  background: var(--color-card-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: var(--card-pad);
  display: flex; flex-direction: column; gap: 0.5rem;
  transition: background var(--transition);
}
.tool-card:hover, .guide-card:hover, .game-card:hover, .report-card:hover,
.feature-card:hover, .service-card:hover, .differentiator-card:hover { background: var(--color-surface-alt); }
.feature-icon, .service-icon, .tool-card__icon, .guide-card__icon, .game-card__icon { width: 28px; height: 28px; margin-bottom: 0.4rem; color: var(--color-accent); }
.tool-card__title, .guide-card__title, .game-card__title, .report-card__title { font-family: var(--font-heading); font-size: 1.15rem; font-weight: 600; margin: 0; }
.tool-card__description, .guide-card__excerpt, .game-card__description, .report-card__description { font-size: 0.95rem; color: var(--section-text-muted, var(--color-text-muted)); margin: 0; flex: 1; }
/* privacy/host labels (private vs AI/hosted) — small, factual */
.tool-card__label, .tool-label { display: inline-block; font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; padding: 0.15rem 0.45rem; border: 1px solid var(--color-hairline); border-radius: var(--radius-sm); color: var(--color-text-muted); }

/* ── Tool page — workspace dominates ── */
.tool-section { padding-block: var(--section-pad-y); background: var(--color-background); }
.tool-section .container { max-width: 960px; }
.tool-workspace { background: var(--color-card-bg); border: 1px solid var(--color-border); border-radius: var(--radius); padding: clamp(1.25rem, 3vw, 2rem); margin-bottom: 2.5rem; }
.tool-workspace__header { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: 1.25rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--color-hairline); }
.tool-workspace__title { font-family: var(--font-heading); font-size: 1.3rem; margin: 0; }
.tool-workspace__meta { font-family: var(--font-mono); font-size: 0.8rem; color: var(--color-text-muted); }
.tool-inputs { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.tool-output { background: var(--color-code-bg); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.25rem; font-family: var(--font-mono); font-size: 0.95rem; line-height: 1.5; color: var(--color-text); overflow-x: auto; }
.tool-output__label { display: block; font-family: var(--font-body); font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); margin-bottom: 0.5rem; }
.tool-output__value { font-family: var(--font-heading); font-size: 1.6rem; font-weight: 600; color: var(--color-accent); }

/* ── Article / guide page — narrow reading column ── */
.article-section { padding-block: var(--section-pad-y); }
.article-section .container { max-width: var(--reading-max); }
.article-body { font-size: 1.075rem; line-height: 1.75; color: var(--color-text); }
.article-body h2 { font-size: 1.5rem; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--color-hairline); }
.article-body h3 { font-size: 1.2rem; margin-top: 2rem; }
.article-body p { margin-bottom: 1.25rem; }
.article-body ul, .article-body ol { margin: 0 0 1.25rem 1.5rem; }
.article-body li { margin-bottom: 0.4rem; }
.article-body blockquote { margin: 1.5rem 0; padding: 0.5rem 1.25rem; border-left: 3px solid var(--color-accent); color: var(--color-text-muted); font-style: italic; }
.article-body code { background: var(--color-surface); border: 1px solid var(--color-hairline); border-radius: var(--radius-sm); padding: 0.1em 0.35em; font-size: 0.9em; }
.article-body pre { background: var(--color-code-bg); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1rem 1.25rem; overflow-x: auto; margin: 1.5rem 0; font-size: 0.9rem; line-height: 1.5; }
.article-body pre code { background: transparent; border: none; padding: 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.95rem; }
.article-body th, .article-body td { padding: 0.6rem 0.875rem; text-align: left; border-bottom: 1px solid var(--color-hairline); }
.article-body th { font-weight: 600; background: var(--color-surface); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; }
.article-body tbody td { color: var(--color-text-muted); }

/* Callout / "design rule" axiom pattern */
.design-rule, .callout { background: var(--color-callout-bg); border-left: 3px solid var(--color-callout-border); padding: 1rem 1.25rem; margin: 1.5rem 0; border-radius: 0 var(--radius) var(--radius) 0; }
.design-rule__label { display: block; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-callout-border); margin-bottom: 0.35rem; }
.design-rule__body { color: var(--color-text); margin: 0; font-weight: 500; }

/* ── Forms (tool controls first-class) ── */
.form-field { margin-bottom: 1rem; }
.form-field label { display: block; font-weight: 600; margin-bottom: 0.3rem; font-size: 0.82rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.form-field input, .form-field textarea, .form-field select { width: 100%; padding: 0.625rem 0.75rem; font: inherit; font-size: 0.95rem; border: 1px solid var(--color-border); border-radius: var(--radius); background: var(--color-card-bg); color: var(--color-text); min-height: 42px; transition: border-color var(--transition), box-shadow var(--transition); }
.form-field input:focus, .form-field textarea:focus, .form-field select:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-accent) 25%, transparent); }
.form-field--inline input { font-family: var(--font-mono); }

/* ── Buttons — flat, hard edges ── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.7rem 1.4rem; font: inherit; font-weight: 600; font-size: 0.9rem; border-radius: var(--radius); border: 1px solid transparent; cursor: pointer; text-decoration: none; min-height: 44px; transition: background var(--transition), border-color var(--transition), color var(--transition); }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--color-accent); color: var(--color-primary-text); border-color: var(--color-accent); }
.btn-primary:hover { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-primary-text); }
.btn-secondary { background: transparent; color: var(--color-text); border-color: var(--color-border); }
.btn-secondary:hover { background: var(--color-text); color: var(--color-background); }
.btn-ghost { background: transparent; color: var(--color-text-muted); border-color: transparent; }
.btn-ghost:hover { color: var(--color-text); background: var(--color-surface); }
.btn-large { padding: 0.9rem 1.9rem; font-size: 0.95rem; min-height: 50px; }

/* ── FAQ ── */
.faq-section .container { max-width: var(--reading-max); }
.faq-item { border-bottom: 1px solid var(--color-hairline); padding: 1rem 0; }
.faq-item summary { cursor: pointer; font-family: var(--font-heading); font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 1rem; min-height: 44px; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--color-text-muted); font-size: 1.25rem; }
.faq-item[open] summary::after { content: "\2212"; color: var(--color-accent); }
.faq-item p { padding-top: 0.6rem; color: var(--section-text-muted, var(--color-text-muted)); }

/* ── About / Contact ── */
.about-section .container { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
.contact-section .container { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }

/* ── Footer — light, hairline ── */
.site-footer { background: var(--color-footer-bg); color: var(--color-footer-text); padding-top: 3rem; margin-top: auto; border-top: 1px solid var(--color-border); font-size: 0.9rem; }
.footer-container { max-width: var(--container-max); margin-inline: auto; padding: 0 var(--container-pad-x); display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; }
.site-footer h3, .site-footer h4 { font-family: var(--font-heading); color: var(--color-text); font-size: 1rem; }
.site-footer a { color: var(--color-footer-text); }
.site-footer a:hover { color: var(--color-accent); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 0.4rem; }
.footer-bottom { margin-top: 2.5rem; padding: 1.25rem 0; border-top: 1px solid var(--color-hairline); text-align: center; font-size: 0.8rem; color: var(--color-text-muted); }

/* ── Responsive ── */
@media (max-width: 1024px) { .footer-container { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) {
  .section { padding-block: var(--section-pad-y-sm); }
  .about-section .container, .contact-section .container, .footer-container { grid-template-columns: 1fr; }
  .main-nav { display: none; }
  .main-nav.is-open { display: block; }
  .mobile-menu-toggle { display: inline-flex; }
  .tool-workspace__header { flex-direction: column; align-items: flex-start; }
}

/* ── Accessibility ── */
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }


/* === Component-specific styles === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp 0.6s ease forwards; }


/* Latest news section — homepage card grid.
   Uses theme CSS custom properties with fallbacks. */
 
.latest-news-section {
  padding: 5rem 2rem;
  background: var(--color-background, #f8fafc);
}
.latest-news-section .container { max-width: 1200px; margin: 0 auto; }
 
.latest-news-section .section-heading {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--color-heading, #0f172a);
  margin: 0 0 1rem;
  position: relative;
  padding-top: 1.5rem;
}
.latest-news-section .section-heading::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 2.5rem; height: 3px;
  background: var(--color-accent, #d97706);
  border-radius: 2px;
}
 
.latest-news-section .section-subheadline {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-text-muted, #64748b);
  max-width: 64ch;
  margin: 0 0 3rem;
}
 
.latest-news-section .news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}
.latest-news-section .news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 2rem;
  color: var(--color-text-muted, #64748b);
}
 
.news-card {
  background: var(--color-card-bg, #ffffff);
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: 0.5rem;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.news-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
  border-color: var(--color-accent, #d97706);
}
.news-card-content {
  padding: 1.5rem 1.5rem 1.25rem;
  display: flex; flex-direction: column;
  gap: 0.75rem; height: 100%;
}
 
.news-card-title { font-size: 1.125rem; font-weight: 600; line-height: 1.4; margin: 0; }
.news-card-title a {
  color: var(--color-heading, #0f172a);
  text-decoration: none;
  transition: color 0.15s ease;
}
.news-card-title a:hover { color: var(--color-accent, #d97706); }
 
.news-card-summary {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text, #475569);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
 
.news-card-meta {
  display: flex; align-items: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted, #64748b);
  margin-top: auto;
  padding-top: 0.5rem;
}
.news-card-meta .news-source { font-weight: 500; }
.news-card-meta .news-source::after {
  content: "·"; display: inline-block; margin: 0 0.5rem;
  color: var(--color-border, #cbd5e1); font-weight: 400;
}
.news-card-meta .news-date { font-variant-numeric: tabular-nums; }
 
.news-section-footer { margin-top: 3rem; text-align: center; }
.news-more-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem; font-weight: 600;
  color: var(--color-accent, #d97706);
  text-decoration: none;
  border: 1.5px solid var(--color-accent, #d97706);
  border-radius: 0.375rem;
  transition: background 0.15s ease, color 0.15s ease;
}
.news-more-link:hover { background: var(--color-accent, #d97706); color: #ffffff; }
 
@media (max-width: 768px) {
  .latest-news-section { padding: 3.5rem 1.5rem; }
  .latest-news-section .news-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .latest-news-section .section-subheadline { margin-bottom: 2rem; }
}