/* =========================================================================
   DRE — Graphite + Muted Sage
   Shared token + component layer. Include on every page before page CSS.
   ========================================================================= */

/* ---------- 1. Tokens ---------------------------------------------------- */

:root {
  /* Canonical palette — do not add colors outside this block */
  --color-bg: #0D1210;
  --color-bg-section: #151C18;
  --color-surface: #1C261F;
  --color-border: #35453B;

  --color-text-primary: #F3F5F2;
  --color-text-secondary: #BAC3BC;
  --color-text-muted: #8E9B93;

  --color-primary: #83C47A;
  --color-primary-hover: #99D28F;
  --color-on-primary: #0B160C;

  --color-link: #7DA8D8;
  --color-warm-accent: #D5BC82;

  /* Derived — strictly from the tokens above */
  --color-border-strong: #4B5D52;                       /* control borders, ≥3:1 */
  --color-surface-hover: #232E26;
  --color-primary-soft: color-mix(in srgb, var(--color-primary) 12%, transparent);
  --color-link-soft: color-mix(in srgb, var(--color-link) 30%, transparent);

  /* Type */
  --font-display: 'Manrope', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --text-display: clamp(2.75rem, 5vw, 4rem);
  --text-h1: clamp(2.25rem, 3.6vw, 3rem);
  --text-h2: clamp(1.75rem, 2.4vw, 2.125rem);
  --text-h3: 1.375rem;
  --text-h4: 1.125rem;
  --text-body-lg: 1.125rem;
  --text-body: 1rem;
  --text-small: 0.875rem;
  --text-caption: 0.75rem;
  --text-overline: 0.6875rem;

  --weight-read: 400;
  --weight-emphasize: 500;   /* IBM Plex Sans ships static weights — 500, not 550 */
  --weight-announce: 600;

  /* Space — 4px base */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 999px;

  /* Structure */
  --border: 1px solid var(--color-border);
  --border-strong: 1px solid var(--color-border-strong);
  --container: 1280px;
  --gutter: 24px;

  /* Motion */
  --ease: cubic-bezier(0.2, 0, 0.2, 1);
  --dur-fast: 120ms;
  --dur: 180ms;
}

/* ---------- 2. Reset + base --------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.6;
  font-weight: var(--weight-read);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-text-primary);
  font-weight: var(--weight-announce);
  margin: 0;
}

h1 { font-size: var(--text-h1); line-height: 1.1; letter-spacing: -0.02em; }
h2 { font-size: var(--text-h2); line-height: 1.15; letter-spacing: -0.02em; }
h3 { font-size: var(--text-h3); line-height: 1.25; letter-spacing: -0.01em; }
h4 { font-size: var(--text-h4); line-height: 1.35; letter-spacing: -0.01em; font-weight: var(--weight-emphasize); }

p { margin: 0; max-width: 68ch; }

a {
  color: var(--color-link);
  text-decoration: none;
  border-bottom: 1px solid var(--color-link-soft);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
a:hover { border-bottom-color: var(--color-link); }

ul, ol { margin: 0; padding: 0; }

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

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

::selection { background: var(--color-primary); color: var(--color-on-primary); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 1ms !important; animation-duration: 1ms !important; }
}

/* ---------- 3. Typography utilities ------------------------------------- */

.display {
  font-family: var(--font-display);
  font-size: var(--text-display);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: var(--weight-announce);
  color: var(--color-text-primary);
}

.lead { font-size: var(--text-body-lg); line-height: 1.6; color: var(--color-text-secondary); }
.small { font-size: var(--text-small); line-height: 1.5; letter-spacing: 0.01em; }
.caption { font-size: var(--text-caption); line-height: 1.5; letter-spacing: 0.02em; color: var(--color-text-muted); }

.overline {
  font-family: var(--font-mono);
  font-size: var(--text-overline);
  line-height: 1.4;
  letter-spacing: 0.09em;         /* CAPS require ≥0.06em */
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-text-muted);
}

.muted { color: var(--color-text-muted); }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* Warm accent — numbers and verified results only */
.figure {
  font-family: var(--font-display);
  color: var(--color-warm-accent);
  font-weight: var(--weight-announce);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

/* ---------- 4. Layout ---------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--space-9); }
.section--alt { background: var(--color-bg-section); border-block: var(--border); }

.stack > * + * { margin-top: var(--space-4); }
.stack-lg > * + * { margin-top: var(--space-6); }

.rule { height: 1px; background: var(--color-border); border: 0; margin: 0; }

/* ---------- 5. Buttons --------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-weight: var(--weight-emphasize);
  letter-spacing: 0.02em;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              transform var(--dur-fast) var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled='true'] { opacity: 0.45; pointer-events: none; }

/* The one primary CTA — identical on every page */
.btn--primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}
.btn--primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }

.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}
.btn--secondary:hover { background: var(--color-surface); border-color: var(--color-primary); }

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: transparent;
  padding-inline: var(--space-3);
}
.btn--ghost:hover { color: var(--color-text-primary); background: var(--color-surface); }

.btn--sm { min-height: 36px; padding-inline: var(--space-4); font-size: var(--text-caption); }
.btn--lg { min-height: 52px; padding-inline: var(--space-6); font-size: var(--text-body); }

/* ---------- 6. Surfaces -------------------------------------------------- */

.card {
  background: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.card--flat { background: transparent; }
.card__divider { height: 1px; background: var(--color-border); margin-block: var(--space-4); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 3px var(--space-3);
  border-radius: var(--radius-pill);
  border: var(--border);
  background: var(--color-bg-section);
  font-family: var(--font-mono);
  font-size: var(--text-overline);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.badge--active { color: var(--color-primary); border-color: var(--color-primary); background: var(--color-primary-soft); }
.badge--verified { color: var(--color-warm-accent); border-color: color-mix(in srgb, var(--color-warm-accent) 45%, transparent); }

.dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; flex: none; }

/* ---------- 7. Forms ----------------------------------------------------- */

.field { display: flex; flex-direction: column; gap: var(--space-2); }

.label {
  font-size: var(--text-small);
  font-weight: var(--weight-emphasize);
  color: var(--color-text-primary);
  letter-spacing: 0.01em;
}

.input, .select, .textarea {
  width: 100%;
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.5;
  transition: border-color var(--dur) var(--ease);
}
.textarea { min-height: 112px; resize: vertical; }
.input::placeholder, .textarea::placeholder { color: var(--color-text-muted); }
.input:hover, .select:hover, .textarea:hover { border-color: var(--color-text-muted); }
.input:focus, .select:focus, .textarea:focus { border-color: var(--color-primary); outline: none; }
.input:focus-visible, .select:focus-visible, .textarea:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

.select {
  appearance: none;
  padding-right: var(--space-8);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%238E9B93' stroke-width='1.5'%3E%3Cpath d='M4 6.5 8 10.5 12 6.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
}

.hint { font-size: var(--text-caption); color: var(--color-text-muted); }

/* ---------- 8. Table ----------------------------------------------------- */

.table { width: 100%; border-collapse: collapse; font-size: var(--text-small); }
.table th, .table td { padding: var(--space-3) var(--space-4); text-align: left; border-bottom: var(--border); vertical-align: top; }
.table th {
  font-family: var(--font-mono);
  font-size: var(--text-overline);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 500;
}
.table td { color: var(--color-text-secondary); }
.table tbody tr:last-child td { border-bottom: 0; }

/* ---------- 9. Accordion / FAQ ------------------------------------------ */

.accordion { border: var(--border); border-radius: var(--radius-lg); background: var(--color-surface); overflow: hidden; }
.accordion details + details { border-top: var(--border); }
.accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  list-style: none;
  color: var(--color-text-primary);
  font-weight: var(--weight-emphasize);
  transition: background-color var(--dur) var(--ease);
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary:hover { background: var(--color-surface-hover); }
.accordion summary::after {
  content: '';
  width: 12px; height: 12px; flex: none;
  border-right: 1.5px solid var(--color-text-muted);
  border-bottom: 1.5px solid var(--color-text-muted);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.accordion details[open] summary::after { transform: rotate(-135deg) translate(-2px, -2px); border-color: var(--color-primary); }
.accordion__body { padding: 0 var(--space-5) var(--space-5); color: var(--color-text-secondary); font-size: var(--text-small); }

/* ---------- 10. Header + navigation ------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bg);
  border-bottom: var(--border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  min-height: 68px;
}
.site-header__brand { display: flex; align-items: center; border: 0; flex: none; }
.site-header__brand:focus-visible { outline-offset: 4px; }

/* Logo lockup is 8:1 — below 600px it drops to the marker alone */
.brand-lockup { display: block; }
.brand-marker { display: none; }
@media (max-width: 599px) {
  .brand-lockup { display: none; }
  .brand-marker { display: block; }
}

.nav { display: flex; align-items: center; gap: var(--space-1); margin-inline-start: var(--space-4); flex: 1 1 auto; }
.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 var(--space-3);
  border: 0;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  font-weight: var(--weight-emphasize);
  letter-spacing: 0.01em;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.nav__link:hover { color: var(--color-text-primary); background: var(--color-bg-section); }
.nav__link[aria-current='page'] { color: var(--color-text-primary); }
.nav__link[aria-current='page']::after {
  content: '';
  position: absolute;
  left: var(--space-3); right: var(--space-3); bottom: -14px;
  height: 2px;
  background: var(--color-primary);
}

.site-header__actions { display: flex; align-items: center; gap: var(--space-3); flex: none; }

/* CTA moves into the mobile panel below 768px so the bar never crowds */
.nav__cta { display: none; }
@media (max-width: 767px) {
  .site-header__actions > .btn--primary { display: none; }
  .nav__cta { display: inline-flex; margin-top: var(--space-3); }
}

/* Language switcher */
.lang {
  display: inline-flex;
  align-items: center;
  padding: 2px;
  border: var(--border);
  border-radius: var(--radius-pill);
  background: var(--color-bg-section);
}
.lang__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 32px;
  padding: 0 var(--space-3);
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-overline);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.lang__btn:hover { color: var(--color-text-primary); }
.lang__btn[aria-pressed='true'] {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: var(--border);
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border: var(--border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-primary);
  cursor: pointer;
}
.nav-toggle:hover { background: var(--color-bg-section); }

@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    display: none;
    position: absolute;
    inset-inline: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: var(--space-2) var(--gutter) var(--space-4);
    background: var(--color-bg);
    border-bottom: var(--border);
  }
  .nav[data-open='true'] { display: flex; }
  .nav__link { min-height: 48px; padding-inline: var(--space-2); }
  .nav__link[aria-current='page']::after { left: 0; right: auto; bottom: auto; top: 50%; width: 2px; height: 20px; transform: translateY(-50%); }
  .nav__link[aria-current='page'] { padding-inline-start: var(--space-4); }
}

/* ---------- 11. Footer --------------------------------------------------- */

.site-footer {
  background: var(--color-bg-section);
  border-top: var(--border);
  padding-block: var(--space-8) var(--space-6);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(140px, 1fr));
  gap: var(--space-7) var(--space-5);
}
.site-footer__col-title {
  font-family: var(--font-mono);
  font-size: var(--text-overline);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.site-footer__list { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.site-footer__list a {
  color: var(--color-text-secondary);
  border-bottom: 0;
  font-size: var(--text-small);
}
.site-footer__list a:hover { color: var(--color-text-primary); }
.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: var(--border);
}
.site-footer__legal { display: flex; flex-wrap: wrap; gap: var(--space-5); }

@media (max-width: 1023px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 599px) {
  .site-footer__grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .site-footer__bottom { flex-direction: column; align-items: flex-start; }
}