/* ============================================================
   VeroPraxis — design system
   Dual-theme: dark (graphite) / light (warm stone)
   Nav + footer bookend: always dark
   All-sans (Satoshi), amber-gold accent
   ============================================================ */

/* ---------- dark theme tokens (default) ---------- */
:root {
  /* surfaces */
  --vp-bg:         #1c1c1e;
  --vp-bg-raised:  #252528;
  --vp-bg-subtle:  #2c2c30;

  /* text */
  --vp-text:       #f0ece3;
  --vp-muted:      #a39e94;
  --vp-faint:      #5c5c61;

  /* accent */
  --vp-gold:       #c4902c;
  --vp-gold-light: #d9a840;
  --vp-gold-dim:   rgba(196, 144, 44, 0.15);

  /* structure */
  --vp-border:     #323235;
  --vp-rule:       1px solid var(--vp-border);

  /* layout */
  --vp-prose:      680px;
  --vp-wide:       1040px;
  --vp-gutter:     clamp(1.5rem, 5vw, 4rem);

  /* type scale */
  --vp-display:    clamp(2.8rem, 6vw, 5.5rem);
  --vp-h1:         clamp(2rem, 4vw, 3.25rem);
  --vp-h2:         clamp(1.4rem, 2.5vw, 2rem);
  --vp-h3:         1.2rem;
  --vp-body:       1.0625rem;
  --vp-sm:         0.875rem;
  --vp-xs:         0.75rem;
}

/* ---------- light theme token overrides ---------- */
[data-theme="light"] {
  --vp-bg:         #f5f0e8;
  --vp-bg-raised:  #fefcf9;
  --vp-bg-subtle:  #ede7db;
  --vp-text:       #1a1510;
  --vp-muted:      #6b6257;
  --vp-faint:      #a39890;
  --vp-gold:       #9a6b1e;
  --vp-gold-light: #b07d2e;
  --vp-gold-dim:   rgba(154, 107, 30, 0.12);
  --vp-border:     #ddd7cc;
}

/* ---------- fonts ---------- */
@font-face {
  font-family: 'Satoshi';
  src: url('../fonts/satoshi/Fonts/WEB/fonts/Satoshi-Variable.woff2') format('woff2');
  font-weight: 300 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Satoshi';
  src: url('../fonts/satoshi/Fonts/WEB/fonts/Satoshi-VariableItalic.woff2') format('woff2');
  font-weight: 300 900;
  font-style: italic;
  font-display: swap;
}

/* ---------- reset ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

/* ---------- base ---------- */
body {
  font-family: 'Satoshi', system-ui, -apple-system, sans-serif;
  font-size: var(--vp-body);
  font-weight: 400;
  line-height: 1.65;
  background: var(--vp-bg);
  color: var(--vp-text);
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; }

button { cursor: pointer; font-family: inherit; }

/* ---------- layout ---------- */
.vp-container {
  width: 100%;
  max-width: var(--vp-wide);
  margin-inline: auto;
  padding-inline: var(--vp-gutter);
}

.vp-container--prose {
  max-width: calc(var(--vp-prose) + (var(--vp-gutter) * 2));
}

.vp-section {
  padding-block: clamp(4rem, 9vw, 8rem);
}

.vp-section--sm {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.vp-divider {
  border: none;
  border-top: var(--vp-rule);
}

/* ---------- typography ---------- */
.vp-display {
  font-size: var(--vp-display);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.04em;
  color: var(--vp-text);
}

.vp-h1 {
  font-size: var(--vp-h1);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.vp-h2 {
  font-size: var(--vp-h2);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.vp-h3 {
  font-size: var(--vp-h3);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.vp-label {
  font-size: var(--vp-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--vp-gold);
}

.vp-label--muted {
  color: var(--vp-faint);
}

.vp-lead {
  font-size: 1.2rem;
  font-weight: 300;
  line-height: 1.7;
  color: var(--vp-muted);
}

.vp-muted { color: var(--vp-muted); }
.vp-faint { color: var(--vp-faint); }
.vp-gold  { color: var(--vp-gold);  }

/* ---------- nav — always dark ---------- */
.vp-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(20, 18, 16, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

[data-theme="dark"] .vp-nav {
  background: rgba(22, 22, 24, 0.97);
}

.vp-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
}

.vp-nav__brand {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: #f0ece3;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.vp-nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.vp-nav__link {
  display: block;
  padding: 0.4rem 0.75rem;
  font-size: var(--vp-sm);
  font-weight: 500;
  text-decoration: none;
  color: rgba(240, 236, 227, 0.5);
  transition: color 0.15s;
  white-space: nowrap;
}

.vp-nav__link:hover,
.vp-nav__link--active {
  color: #f0ece3;
}

.vp-nav__cta {
  display: block;
  margin-left: 0.75rem;
  padding: 0.45rem 1rem;
  font-size: var(--vp-sm);
  font-weight: 600;
  text-decoration: none;
  color: var(--vp-gold);
  border: 1px solid var(--vp-gold);
  transition: background 0.15s, color 0.15s;
}

.vp-nav__cta:hover {
  background: var(--vp-gold);
  color: #141210;
}

/* ---------- theme toggle ---------- */
.vp-theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  padding: 0.45rem;
  margin-left: 0.5rem;
  color: rgba(240, 236, 227, 0.25);
  transition: color 0.2s;
  line-height: 1;
}

.vp-theme-toggle:hover {
  color: rgba(240, 236, 227, 0.6);
}

/* ---------- dropdown ---------- */
.vp-dropdown {
  position: relative;
}

.vp-dropdown__trigger {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.vp-dropdown__trigger::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  opacity: 0.5;
  transition: transform 0.15s;
}

.vp-dropdown:hover .vp-dropdown__trigger::after {
  transform: rotate(180deg);
}

.vp-dropdown__menu {
  display: none;
  position: absolute;
  top: calc(100% + 1px);
  right: 0;
  min-width: 160px;
  background: #1e1c19;
  border: 1px solid rgba(255, 255, 255, 0.07);
  list-style: none;
  padding: 0.5rem 0;
}

.vp-dropdown:hover .vp-dropdown__menu,
.vp-dropdown:focus-within .vp-dropdown__menu {
  display: block;
}

.vp-dropdown__item a {
  display: block;
  padding: 0.55rem 1.25rem;
  font-size: var(--vp-sm);
  font-weight: 500;
  color: rgba(240, 236, 227, 0.5);
  text-decoration: none;
  transition: color 0.15s;
  white-space: nowrap;
}

.vp-dropdown__item a:hover {
  color: #f0ece3;
}

/* ---------- buttons ---------- */
.vp-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  font-family: inherit;
  font-size: var(--vp-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  cursor: pointer;
}

.vp-btn--primary {
  background: var(--vp-gold);
  color: #141210;
  border-color: var(--vp-gold);
}

.vp-btn--primary:hover {
  background: var(--vp-gold-light);
  border-color: var(--vp-gold-light);
  color: #141210;
}

/* light mode: dark ink primary button */
[data-theme="light"] .vp-btn--primary {
  background: var(--vp-text);
  color: var(--vp-bg-raised);
  border-color: var(--vp-text);
}

[data-theme="light"] .vp-btn--primary:hover {
  background: #2e2419;
  border-color: #2e2419;
  color: var(--vp-bg-raised);
}

.vp-btn--outline {
  background: transparent;
  color: var(--vp-text);
  border-color: var(--vp-border);
}

.vp-btn--outline:hover {
  border-color: var(--vp-gold);
  color: var(--vp-gold);
}

/* ---------- hero ---------- */
.vp-hero {
  padding-block: clamp(5rem, 12vw, 10rem);
}

.vp-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.vp-kicker::before {
  content: '';
  display: block;
  flex-shrink: 0;
  width: 2rem;
  height: 1px;
  background: var(--vp-gold);
}

/* ---------- pillars / methodology ---------- */
.vp-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0;
  border: var(--vp-rule);
}

.vp-pillar {
  padding: 2rem;
  border-right: var(--vp-rule);
}

.vp-pillar:last-child {
  border-right: none;
}

.vp-pillar__num {
  font-size: var(--vp-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--vp-gold);
  margin-bottom: 1.25rem;
}

.vp-pillar__title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.6rem;
}

.vp-pillar__body {
  font-size: var(--vp-sm);
  color: var(--vp-muted);
  line-height: 1.6;
}

/* ---------- insights / post list ---------- */
.vp-post-list {
  display: grid;
  gap: 0;
}

.vp-post-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 2rem;
  padding-block: 1.75rem;
  border-top: var(--vp-rule);
  text-decoration: none;
  color: inherit;
}

.vp-post-row:last-child {
  border-bottom: var(--vp-rule);
}

.vp-post-row:hover .vp-post-row__title {
  color: var(--vp-gold);
}

.vp-post-row__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
}

.vp-post-row__title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
  transition: color 0.15s;
}

.vp-post-row__summary {
  margin-top: 0.35rem;
  font-size: var(--vp-sm);
  color: var(--vp-muted);
  line-height: 1.55;
  max-width: 58ch;
}

.vp-post-row__date {
  font-size: var(--vp-sm);
  color: var(--vp-faint);
  white-space: nowrap;
  padding-top: 0.15rem;
}

/* ---------- content type badges ---------- */
.vp-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border: 1px solid;
  line-height: 1;
}

.vp-badge--core    { color: var(--vp-gold); border-color: var(--vp-gold-dim); }
.vp-badge--applied { color: #8eb89a; border-color: rgba(142, 184, 154, 0.3); }
.vp-badge--notes   { color: #8fa8c4; border-color: rgba(143, 168, 196, 0.3); }

/* ---------- prose (post detail) ---------- */
.vp-prose {
  max-width: var(--vp-prose);
}

.vp-prose h2 {
  font-size: var(--vp-h2);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.vp-prose h3 {
  font-size: var(--vp-h3);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.vp-prose p {
  margin-bottom: 1.4rem;
  color: var(--vp-muted);
  line-height: 1.8;
}

.vp-prose p:first-of-type {
  color: var(--vp-text);
  font-size: 1.1rem;
  line-height: 1.75;
}

.vp-prose ul, .vp-prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1.4rem;
  color: var(--vp-muted);
}

.vp-prose li { margin-bottom: 0.4rem; line-height: 1.7; }

.vp-prose strong { color: var(--vp-text); font-weight: 600; }

.vp-prose blockquote {
  border-left: 2px solid var(--vp-gold);
  padding-left: 1.25rem;
  margin-block: 2rem;
  color: var(--vp-muted);
  font-style: italic;
}

.vp-prose pre {
  background: var(--vp-bg-raised);
  border: var(--vp-rule);
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.4rem;
  font-size: 0.9rem;
}

.vp-prose code {
  font-size: 0.9em;
  color: var(--vp-gold);
}

.vp-prose a {
  color: var(--vp-gold);
  text-underline-offset: 3px;
}

.vp-prose a:hover { color: var(--vp-gold-light); }

.vp-prose img {
  max-width: 100%;
  height: auto;
  margin-block: 2rem;
}

/* ---------- footer ---------- */
.vp-footer {
  border-top: var(--vp-rule);
  padding-block: 2.5rem;
}

.vp-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.vp-footer__brand {
  font-weight: 700;
  font-size: var(--vp-sm);
  letter-spacing: -0.01em;
  margin-bottom: 0.25rem;
}

.vp-footer__tagline {
  font-size: var(--vp-sm);
  color: var(--vp-faint);
}

.vp-footer__links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  align-items: center;
}

.vp-footer__links a,
.vp-footer__links li {
  font-size: var(--vp-xs);
  color: var(--vp-faint);
  text-decoration: none;
  transition: color 0.15s;
}

.vp-footer__links a:hover { color: var(--vp-muted); }

/* ---------- forms ---------- */
.vp-form {
  display: grid;
  gap: 1.25rem;
}

.vp-field {
  display: grid;
  gap: 0.4rem;
}

.vp-field label {
  font-size: var(--vp-sm);
  font-weight: 500;
  color: var(--vp-text);
}

.vp-field label .vp-field__optional {
  font-weight: 400;
  color: var(--vp-faint);
  margin-left: 0.35rem;
}

.vp-input,
.vp-textarea {
  width: 100%;
  background: var(--vp-bg-raised);
  border: var(--vp-rule);
  color: var(--vp-text);
  font-family: inherit;
  font-size: var(--vp-sm);
  line-height: 1.5;
  padding: 0.75rem 1rem;
  transition: border-color 0.15s;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.vp-input::placeholder,
.vp-textarea::placeholder {
  color: var(--vp-faint);
}

.vp-input:focus,
.vp-textarea:focus {
  border-color: var(--vp-gold);
}

.vp-textarea {
  resize: vertical;
  min-height: 140px;
}

.vp-field__error {
  font-size: var(--vp-xs);
  color: #d95f5f;
}

/* ---------- back link ---------- */
.vp-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--vp-sm);
  font-weight: 500;
  color: var(--vp-faint);
  text-decoration: none;
  transition: color 0.15s;
}

.vp-back-link:hover {
  color: var(--vp-muted);
}

/* ---------- tab nav (insights filter) ---------- */
.vp-tab-nav {
  display: flex;
  gap: 0;
  border-bottom: var(--vp-rule);
  flex-wrap: wrap;
}

.vp-tab {
  display: block;
  padding: 0.6rem 1.1rem;
  font-size: var(--vp-sm);
  font-weight: 500;
  color: var(--vp-faint);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}

.vp-tab:hover {
  color: var(--vp-muted);
}

.vp-tab--active {
  color: var(--vp-text);
  border-bottom-color: var(--vp-gold);
}

/* ---------- pagination ---------- */
.vp-pagination {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 3rem;
}

.vp-page-link {
  display: inline-block;
  padding: 0.45rem 1rem;
  font-size: var(--vp-sm);
  font-weight: 500;
  color: var(--vp-muted);
  text-decoration: none;
  border: var(--vp-rule);
  transition: color 0.15s, border-color 0.15s;
}

.vp-page-link:hover {
  color: var(--vp-text);
  border-color: var(--vp-gold);
}

.vp-page-info {
  font-size: var(--vp-sm);
  color: var(--vp-faint);
}

/* ---------- scroll reveal ---------- */
.vp-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.vp-reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- mobile nav ---------- */
.vp-nav__hamburger {
  display: none;
  background: none;
  border: none;
  color: #f0ece3;
  padding: 0.25rem;
  line-height: 1;
}

@media (max-width: 720px) {
  .vp-nav__links {
    display: none;
    position: absolute;
    top: 3.5rem;
    inset-inline: 0;
    background: #141210;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 0;
  }

  .vp-nav__links--open {
    display: flex;
  }

  .vp-nav__link {
    padding: 0.75rem var(--vp-gutter);
    font-size: 1rem;
  }

  .vp-nav__cta {
    margin: 0.75rem var(--vp-gutter);
    text-align: center;
  }

  .vp-nav__hamburger {
    display: block;
  }

  .vp-dropdown__menu {
    position: static;
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    background: #1e1c19;
    padding: 0;
  }

  .vp-dropdown__item a {
    padding-left: calc(var(--vp-gutter) + 1rem);
  }

  .vp-post-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .vp-pillars {
    grid-template-columns: 1fr;
  }

  .vp-pillar {
    border-right: none;
    border-bottom: var(--vp-rule);
  }

  .vp-pillar:last-child {
    border-bottom: none;
  }

  .vp-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- accessibility ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
  .vp-reveal {
    opacity: 1;
    transform: none;
  }
}