/**
 * Coast Retirement — Design system (canonical)
 * Derived from: html/branding.html · html/spreadsheet-graphics.html
 * Load on every marketing + calculator page for consistent tokens, type, and chrome.
 */

/* ═══════════════════════════════════════════════════════════════════
   TOKENS — Dieter Rams palette + spreadsheet data accents
   ═══════════════════════════════════════════════════════════════════ */
:root {
  --black:   #0A0A0A;
  --grey-1:  #1C1C1C;
  --grey-2:  #3D3D3D;
  --grey-3:  #6B6B6B;
  --grey-4:  #A3A3A3;
  --grey-5:  #D4D4D4;
  --grey-6:  #EBEBEB;
  --grey-7:  #F5F5F5;
  --white:   #FFFFFF;

  /* Data / state — function only (spreadsheet-graphics + components) */
  --pos:     #16A34A;
  --warn:    #D97706;
  --neg:     #DC2626;
  --positive:   var(--pos);
  --warning:    var(--warn);
  --negative:   var(--neg);
  --data-green: var(--pos);
  --data-red:   var(--neg);
  --accent-positive: var(--pos);
  --accent-warning:  var(--warn);
  --accent-negative: var(--neg);

  /* Optional Rams warm neutrals (charts / special panels) */
  --rams-bg:     #F2F0EB;
  --rams-panel:  #E5E2D9;
  --rams-ink:    #1A1814;
  --rams-rule:   #C8C4BC;
  --rams-orange: #C15A1E;
  --rams-orange-bright: #FD611A;
  /** Hover for optional accent CTAs (campaign / hero buttons) */
  --cta-accent-hover: #E35512;
  --rams-dial:   #2D2B27;

  /* Dark Volume meter (spreadsheet reference only) */
  --dv-bg:       #0D0D0D;
  --dv-face:     #121212;
  --dv-channel:  #1C1C1C;
  --dv-tick:     #383838;
  --dv-tick-maj: #6B6B6B;
  --dv-lit:      #EBEBEB;
  --dv-accent:   #C15A1E;
  --dv-needle:   #F5F5F5;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'DM Mono', 'Fira Mono', 'Courier New', monospace;

  --max:    1120px;
  --gutter: 40px;
  --rule:   1px solid var(--grey-5);

  /* Spacing scale (components.html) */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 80px;

  /* Legacy homepage CTA token */
  --accent: var(--black);

  /* Prose hyperlinks — brand accent (see branding kit) */
  --link: var(--rams-orange-bright);
  --link-hover: var(--cta-accent-hover);
  --link-underline: rgba(253, 97, 26, 0.38);
  --link-underline-hover: rgba(227, 85, 18, 0.55);
}

/* ═══════════════════════════════════════════════════════════════════
   RESET + BASE
   ═══════════════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}
body {
  background: var(--white);
  color: var(--black);
  font-family: var(--font-sans);
  line-height: 1.6;
}

/* Prose links: accent color + underline (nav/footer/buttons opt out below) */
a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-color: var(--link-underline);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}
a:hover {
  color: var(--link-hover);
  text-decoration-color: var(--link-underline-hover);
}
a:focus-visible {
  outline: 2px solid var(--grey-4);
  outline-offset: 3px;
}

/* Nav, footer, chips, and “border-bottom CTA” links — no second underline */
.nav-brand,
.nav-links a,
.nav-signin,
a.nav-cta,
.footer-links a,
.hero-tag,
.tool-cta,
.view-all,
.qc-result-link,
.book-btn,
.btn-white,
.btn-ghost-white,
.jump-link,
.sc-chart-link,
.sidebar-link,
.kit-cta,
.sb-link,
.cl-nav a,
.cr-nav-links a,
.cr-nav-signin,
.cr-nav-cta,
.auth-footer a,
.back-scenarios a,
.ghost-link,
.nav-drawer-link {
  text-decoration: none;
}

/* Links styled as buttons — no prose underline/orange */
a.btn {
  text-decoration: none;
}

/* Secondary chrome links — not prose orange */
.ghost-link {
  color: inherit;
}
.ghost-link:hover {
  color: var(--black);
}

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

/* ═══════════════════════════════════════════════════════════════════
   LAYOUT — shared marketing shell
   ═══════════════════════════════════════════════════════════════════ */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.rule { height: 1px; background: var(--grey-5); }
section { border-bottom: var(--rule); }

/* ═══════════════════════════════════════════════════════════════════
   SITE NAV — matches index.html + tool pages
   ═══════════════════════════════════════════════════════════════════ */
nav {
  border-bottom: var(--rule);
  position: sticky;
  top: 0;
  background: var(--white);
  z-index: 100;
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.nav-logo {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--black);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--black);
}
.nav-brand:hover .nav-logo-text {
  color: var(--grey-2);
}
.nav-logo-img {
  display: block;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}
.nav-logo-text {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--black);
  transition: color 0.12s;
}
.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}
.nav-links a {
  font-size: .82rem;
  color: var(--grey-3);
  letter-spacing: .02em;
  transition: color .12s;
}
.nav-links a:hover { color: var(--black); }
.nav-links a.active { color: var(--black); font-weight: 700; }

/* ───────────────────────────────────────────────────────────────
   NAV DROPDOWNS (Models / Research)
   Keeps existing .nav-links layout while adding grouped menus.
   ─────────────────────────────────────────────────────────────── */
.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.nav-dropbtn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 0;
  padding: 0;
  margin: 0;
  cursor: pointer;
  font: inherit;
  color: var(--grey-3);
  font-size: .82rem;
  letter-spacing: .02em;
  transition: color .12s;
}
.nav-dropbtn:focus-visible {
  outline: 2px solid var(--grey-4);
  outline-offset: 3px;
}
.nav-dropbtn:hover { color: var(--black); }
.nav-dropdown[aria-expanded="true"] .nav-dropbtn {
  color: var(--black);
  font-weight: 700;
}
.nav-caret {
  width: 10px;
  height: 10px;
  display: inline-block;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  margin-top: -2px;
}
.nav-menu {
  display: none;
  position: absolute;
  top: 44px;
  left: -12px;
  min-width: 220px;
  background: var(--white);
  border: var(--rule);
  padding: 10px 0;
  z-index: 200;
}
.nav-dropdown[aria-expanded="true"] .nav-menu {
  display: block;
}
.nav-menu a {
  display: block;
  padding: 10px 14px;
  font-size: .82rem;
  color: var(--grey-2);
}
.nav-menu a:hover {
  background: var(--grey-7);
  color: var(--black);
}
.nav-menu a.active {
  color: var(--black);
  font-weight: 700;
}
.nav-menu-sep {
  height: 1px;
  background: var(--grey-6);
  margin: 8px 0;
}

/* Hide marketing nav auth until auth-nav-session.js finishes (avoids flash of “Log in” when already signed in). */
html.auth-nav-pending nav .nav-auth,
html.auth-nav-pending nav .nav-actions > a[href^="/auth"] {
  visibility: hidden;
}

.nav-auth {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-auth.nav-auth-signedin {
  gap: 10px;
}
.nav-user-email {
  font-size: 0.72rem;
  color: var(--grey-3);
  font-family: var(--font-mono);
  max-width: min(280px, 42vw);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-actions .nav-user-email {
  max-width: min(260px, 38vw);
}
.nav-signin {
  font-size: .78rem;
  color: var(--grey-3);
  padding: 7px 14px;
  border-radius: 2px;
  transition: color .12s;
  font-weight: 600;
}
.nav-signin:hover { color: var(--black); }
.nav-cta {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: var(--black);
  color: var(--white);
  padding: 8px 18px;
  border-radius: 2px;
  transition: background .12s;
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
}
.nav-cta:hover { background: var(--grey-1); }
a.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-sizing: border-box;
}

/* ───────────────────────────────────────────────────────────────
   NAV DRAWER (hamburger everywhere)
   Replaces the dropdown nav UX on all breakpoints.
   ─────────────────────────────────────────────────────────────── */
.nav-hamburger {
  width: 38px;
  height: 38px;
  border: 1px solid var(--grey-5);
  background: var(--white);
  border-radius: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .12s, border-color .12s;
}
.nav-hamburger:hover { background: var(--grey-7); border-color: var(--grey-4); }
.nav-hamburger:focus-visible {
  outline: 2px solid var(--grey-4);
  outline-offset: 3px;
}
.nav-hamburger-bars {
  width: 16px;
  height: 12px;
  position: relative;
  display: block;
}
.nav-hamburger-bars::before,
.nav-hamburger-bars::after,
.nav-hamburger-bars span {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--black);
}
.nav-hamburger-bars::before { top: 0; }
.nav-hamburger-bars span { top: 5px; }
.nav-hamburger-bars::after { bottom: 0; }

.nav-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,10,10,.42);
  z-index: 300;
  display: none;
}
.nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(420px, 92vw);
  background: var(--white);
  border-left: 1px solid var(--grey-5);
  z-index: 310;
  display: none;
  transform: translateX(10px);
  transition: transform .16s ease;
}

body.nav-drawer-open .nav-drawer-overlay { display: block; }
body.nav-drawer-open .nav-drawer {
  display: block;
  transform: translateX(0);
}

@media (prefers-reduced-motion: reduce) {
  .nav-drawer { transition: none; }
}

.nav-drawer-inner {
  height: 100%;
  display: flex;
  flex-direction: column;
}
.nav-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--grey-5);
}
.nav-drawer-title {
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.nav-drawer-close {
  width: 38px;
  height: 38px;
  border: 1px solid var(--grey-5);
  background: var(--white);
  border-radius: 2px;
  cursor: pointer;
  transition: background .12s, border-color .12s;
  font-size: 18px;
  line-height: 1;
  color: var(--black);
}
.nav-drawer-close:hover { background: var(--grey-7); border-color: var(--grey-4); }
.nav-drawer-close:focus-visible { outline: 2px solid var(--grey-4); outline-offset: 3px; }

.nav-drawer-body {
  padding: 18px;
  overflow: auto;
}
.nav-drawer-section {
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--grey-6);
}
.nav-drawer-section:last-child { border-bottom: 0; padding-bottom: 0; margin-bottom: 0; }
.nav-drawer-eyebrow {
  font-size: .66rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--grey-4);
  margin-bottom: 10px;
  font-family: var(--font-mono);
}
.nav-drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 10px;
  border-radius: 2px;
  color: var(--grey-2);
  font-size: .9rem;
}
.nav-drawer-link:hover { background: var(--grey-7); color: var(--black); }
.nav-drawer-link.active { color: var(--black); font-weight: 800; }
.nav-drawer-meta {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--grey-4);
  letter-spacing: .04em;
}

.nav-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

/* ═══════════════════════════════════════════════════════════════════
   TYPOGRAPHY UTILITIES (branding + spreadsheet)
   ═══════════════════════════════════════════════════════════════════ */
.eyebrow,
.kicker {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--grey-4);
}
.section-eyebrow {
  font-size: .66rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--grey-4);
  font-family: var(--font-mono);
  margin-bottom: 10px;
}

/* ═══════════════════════════════════════════════════════════════════
   BUTTONS — shared with risk-tolerance-simulator
   ═══════════════════════════════════════════════════════════════════ */
.btn {
  padding: 11px 24px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  cursor: pointer;
  border: none;
  border-radius: 2px;
  font-family: var(--font-sans);
  transition: background .12s;
}
.btn-primary {
  background: var(--black);
  color: var(--white);
}
.btn-primary:hover { background: var(--grey-1); }
.btn-accent {
  background: var(--rams-orange-bright);
  color: var(--white);
}
.btn-accent:hover { background: var(--cta-accent-hover); }
.btn-accent-outline-dark {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--rams-orange-bright);
}
.btn-accent-outline-dark:hover {
  background: rgba(253, 97, 26, 0.12);
}
.btn-ghost {
  background: transparent;
  color: var(--grey-3);
  border: var(--rule);
}
.btn-ghost:hover {
  background: var(--grey-7);
  color: var(--black);
}
.btn:disabled { opacity: .3; cursor: not-allowed; }

/* ═══════════════════════════════════════════════════════════════════
   SPREADsheet-style grid (spreadsheet-graphics.html)
   ═══════════════════════════════════════════════════════════════════ */
.grid-1px {
  display: grid;
  gap: 1px;
  background: var(--grey-5);
  border: 1px solid var(--grey-5);
}
.cell {
  background: var(--white);
  padding: 24px;
}
.cell.dark { background: var(--black); color: var(--white); }
.cell.mid  { background: var(--grey-7); }

/* Data text helpers */
.text-pos, .pos { color: var(--pos); }
.text-warn, .warn { color: var(--warn); }
.text-neg, .neg { color: var(--neg); }

/* ═══════════════════════════════════════════════════════════════════
   Site-wide minimal footer (marketing + calculators)
   ═══════════════════════════════════════════════════════════════════ */
.site-footer-min {
  padding: 32px 0 40px;
  border-top: var(--rule);
  margin-top: 0;
  background: var(--white);
}
.site-footer-min-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 28px;
  font-size: .78rem;
  font-family: var(--font-mono);
  color: var(--grey-4);
}
.site-footer-min-inner a {
  color: var(--grey-3);
  text-decoration: none;
}
.site-footer-min-inner a:hover { color: var(--black); }
.site-footer-min-copy { color: var(--grey-4); }

.site-footer-disclaimer {
  max-width: var(--max);
  margin: 0 auto 16px;
  padding: 0 var(--gutter);
  font-size: .68rem;
  line-height: 1.55;
  color: var(--grey-4);
  font-family: var(--font-mono);
  text-align: center;
}

/* SEO article pages (render_seo_articles.py) */
.seo-article { padding: 32px var(--gutter) 64px; max-width: var(--max); margin: 0 auto; }
.seo-breadcrumbs { font-size: .72rem; color: var(--grey-4); margin-bottom: 20px; font-family: var(--font-mono); }
.seo-breadcrumbs a { color: var(--grey-3); text-decoration: none; border-bottom: 1px solid var(--grey-5); }
.seo-breadcrumbs a:hover { color: var(--black); }
.seo-hero { padding-bottom: 32px; border-bottom: var(--rule); margin-bottom: 32px; }
.seo-hero h1 { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; letter-spacing: -.03em; line-height: 1.15; margin: 8px 0 16px; }
.seo-short-answer { font-size: 1rem; color: var(--grey-2); line-height: 1.65; max-width: 720px; }
.seo-section { margin-bottom: 32px; }
.seo-h2 { font-size: 1.1rem; font-weight: 800; margin-bottom: 12px; letter-spacing: -.01em; }
.seo-section p, .seo-section li { font-size: .9rem; color: var(--grey-2); line-height: 1.65; }
.seo-section ul, .seo-section ol { padding-left: 1.25rem; margin: 8px 0; }
.seo-formula { font-family: var(--font-mono); font-size: .78rem; background: var(--grey-7); padding: 14px 16px; border: var(--rule); overflow-x: auto; line-height: 1.6; }
.seo-steps { padding-left: 1.25rem; }
.seo-related { list-style: disc; padding-left: 1.25rem; }
.seo-related a { color: var(--black); border-bottom: 1px solid var(--grey-5); }
.seo-faq-list { display: flex; flex-direction: column; gap: 16px; }
.seo-faq-q { font-size: .95rem; font-weight: 700; margin-bottom: 6px; }
.seo-faq-a { font-size: .85rem; color: var(--grey-3); line-height: 1.6; }
.seo-article-cta { margin: 32px 0 16px; }
.seo-article-cta .btn-primary {
  display: inline-block; padding: 12px 24px; background: var(--black); color: var(--white);
  font-size: .78rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; text-decoration: none;
}
.seo-article-cta .btn-primary:hover { background: var(--grey-1); }
.seo-disclaimer-inline { font-size: .68rem; color: var(--grey-4); line-height: 1.55; font-family: var(--font-mono); margin-top: 24px; }
.seo-tool-explainer { margin-top: 48px; padding-top: 32px; border-top: var(--rule); }
.seo-tool-explainer .seo-h2 { font-size: .68rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--grey-4); }