/* ChartWise — shared site chrome
   Used by index.html, privacy.html, support.html
   Requires tokens.css (Cobalt dual theme) loaded first. */

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

html, body { overflow-x: clip; }

/* Fallback if tokens.css missing — mirrors Cobalt light */
:root {
  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --max: 1120px;
  --max-narrow: 720px;
  --page-gutter: clamp(1rem, 4vw, 1.5rem);
  --radius-control: 6px;
  --radius-card: 10px;
  --rule-hair: 1px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease: var(--ease-out, cubic-bezier(0.22, 0.61, 0.36, 1));
  --dur: 180ms;
  /* light cobalt fallbacks (overridden by tokens.css html[data-theme]) */
  --bg: oklch(98.5% 0.004 250);
  --bg-paper: oklch(96.5% 0.006 252);
  --ink: oklch(24% 0.02 258);
  --ink-soft: oklch(34% 0.018 257);
  --ink-faint: oklch(52% 0.02 257);
  --line: oklch(88% 0.01 256);
  --line-soft: oklch(88% 0.01 256);
  --accent: oklch(58% 0.2 256);
  --accent-hover: oklch(52% 0.2 256);
  --accent-soft: oklch(58% 0.2 256 / 0.1);
  --accent-ring: oklch(58% 0.2 256 / 0.28);
  --on-accent: oklch(99% 0.01 250);
  --header-bg: color-mix(in oklch, oklch(98.5% 0.004 250) 86%, transparent);
  --sheet-bg: oklch(98.5% 0.004 250);
  --sheet-scrim: oklch(24% 0.02 258 / 0.32);
  --btn-secondary-bg: oklch(96.5% 0.006 252);
  --btn-secondary-hover: oklch(94% 0.008 254);
  --card-bg: oklch(98.5% 0.004 250);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  font-family: var(--font-body);
  color: var(--ink-soft, var(--ink));
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--ink);
  overflow-wrap: anywhere;
  min-width: 0;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 16px;
  padding: 8px 14px;
  background: var(--accent);
  color: var(--on-accent);
  border-radius: var(--radius-control);
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 100;
  transition: top 160ms var(--ease);
}
.skip-link:focus {
  top: 12px;
  color: var(--on-accent);
}

/* Containers */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--page-gutter);
}
.container-narrow {
  max-width: var(--max-narrow);
  margin: 0 auto;
  padding: 0 var(--page-gutter);
}

/* ---- Header (N1b Cobalt) ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  backdrop-filter: blur(10px) saturate(140%);
  border-bottom: var(--rule-hair) solid var(--line);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.site-header .container,
.cw-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
  text-decoration: none;
}
.logo:hover { color: var(--ink); text-decoration: none; }
.logo-mark {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-control);
  background: var(--accent);
  color: var(--on-accent);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.logo-mark svg { display: block; stroke: currentColor; }

.nav {
  display: flex;
  gap: 4px 14px;
  align-items: center;
  flex-wrap: nowrap;
}
.nav a {
  color: var(--ink-soft);
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  text-decoration: none;
  padding: 6px 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--accent);
  text-decoration: none;
}
.nav a.is-active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.nav-cta {
  color: var(--on-accent) !important;
  background: var(--accent);
  border: var(--rule-hair) solid var(--accent);
  border-radius: var(--radius-control);
  padding: 8px 12px !important;
  font-weight: 600;
  border-bottom: none !important;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav-cta:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--on-accent) !important;
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
  color: var(--ink);
  border-radius: var(--radius-control);
  min-width: 44px;
  min-height: 44px;
}
.nav-toggle svg { display: block; }

.header-actions {
  display: none;
  align-items: center;
  gap: 6px;
}

@media (max-width: 960px) {
  .nav { display: none; }
  .header-actions { display: flex; }
  .nav-toggle { display: grid; place-items: center; }
}

/* Theme toggle (shared) */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 40px;
  height: 34px;
  padding: 0 10px;
  border-radius: var(--radius-control);
  border: var(--rule-hair) solid var(--line);
  background: var(--btn-secondary-bg);
  color: var(--ink-soft);
  cursor: pointer;
  position: relative;
  font: 500 0.75rem/1 var(--font-mono);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.theme-toggle:hover {
  background: var(--btn-secondary-hover);
  border-color: var(--ink-faint);
  color: var(--ink);
}
.theme-toggle:active { transform: translateY(1px); }
.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.theme-toggle-icons {
  position: relative;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.theme-toggle-icon {
  display: grid;
  place-items: center;
  position: absolute;
  inset: 0;
  transition: opacity var(--dur) var(--ease), transform 220ms var(--ease);
}
.theme-toggle-label {
  display: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
@media (min-width: 961px) {
  .nav .theme-toggle-label { display: inline; }
}
.theme-toggle-label--always { display: inline !important; }
.theme-toggle--sheet {
  margin-top: 16px;
  width: 100%;
  justify-content: flex-start;
  min-height: 44px;
  padding: 10px 14px;
}
.theme-toggle--mobile {
  min-width: 38px;
  padding: 0;
}
.theme-toggle--mobile .theme-toggle-label { display: none; }

html[data-theme="dark"] .theme-toggle-icon--sun,
html.theme-dark .theme-toggle-icon--sun,
html:not([data-theme]):not(.theme-light) .theme-toggle-icon--sun {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}
html[data-theme="dark"] .theme-toggle-icon--moon,
html.theme-dark .theme-toggle-icon--moon,
html:not([data-theme]):not(.theme-light) .theme-toggle-icon--moon {
  opacity: 0;
  transform: scale(0.6) rotate(-30deg);
}
html[data-theme="light"] .theme-toggle-icon--sun,
html.theme-light .theme-toggle-icon--sun {
  opacity: 0;
  transform: scale(0.6) rotate(30deg);
}
html[data-theme="light"] .theme-toggle-icon--moon,
html.theme-light .theme-toggle-icon--moon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}
html[data-theme="dark"] .theme-toggle-label::after,
html.theme-dark .theme-toggle-label::after,
html:not([data-theme]):not(.theme-light) .theme-toggle-label::after { content: "Light"; }
html[data-theme="light"] .theme-toggle-label::after,
html.theme-light .theme-toggle-label::after { content: "Dark"; }

/* Hide desktop theme in nav on mobile (use header-actions) */
@media (max-width: 960px) {
  .nav .theme-toggle { display: none; }
}

/* Mobile sheet */
.mobile-sheet {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: var(--sheet-scrim);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms var(--ease);
}
.mobile-sheet[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}
.mobile-sheet-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(360px, 86vw);
  background: var(--sheet-bg, var(--bg));
  padding: 20px 24px 32px;
  transform: translateX(100%);
  transition: transform 240ms var(--ease);
  display: flex;
  flex-direction: column;
  gap: 4px;
  outline: none;
  border-left: var(--rule-hair) solid var(--line);
  box-shadow: -12px 0 40px oklch(0% 0 0 / 0.18);
}
.mobile-sheet[data-open="true"] .mobile-sheet-panel { transform: translateX(0); }
.mobile-sheet-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: var(--rule-hair) solid var(--line);
}
.mobile-sheet-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.mobile-sheet-close {
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
  color: var(--ink);
  border-radius: var(--radius-control);
  min-width: 44px;
  min-height: 44px;
}
.mobile-sheet-close:hover { background: var(--btn-secondary-bg); }
.mobile-sheet a {
  display: block;
  padding: 14px 4px;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 500;
  border-bottom: var(--rule-hair) solid var(--line);
  text-decoration: none;
}
.mobile-sheet a:hover { color: var(--accent); }
.mobile-sheet a.is-active { color: var(--accent); }
body.menu-open { overflow: hidden; }

/* Shared buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: var(--radius-control);
  font: 600 0.875rem/1 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  border: var(--rule-hair) solid transparent;
  min-height: 44px;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform 120ms var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--on-accent);
}
.btn-secondary {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--line);
}
.btn-secondary:hover {
  border-color: var(--accent);
  background: var(--btn-secondary-bg);
  color: var(--ink);
}
.btn-sm {
  padding: 10px 14px;
  min-height: 40px;
  font-size: 0.8rem;
}

/* ---- Footer (shared Ft5-adjacent) ---- */
.site-footer {
  border-top: var(--rule-hair) solid var(--line);
  background: var(--bg);
  padding: 3rem 0 2rem;
}
.site-footer .container {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  text-align: left;
  gap: 1.25rem;
}
.foot-stmt__line {
  font-family: var(--font-display);
  font-style: normal;
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ink);
  max-width: 18ch;
  margin: 0;
}
.foot-stmt__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 1rem;
  border-top: var(--rule-hair) solid var(--line);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}
.footer-links a {
  color: var(--ink-soft);
  font-size: 0.875rem;
  white-space: nowrap;
  text-decoration: none;
}
.footer-links a:hover { color: var(--ink); }
.footer-products {
  width: 100%;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-faint);
  letter-spacing: 0.03em;
}
.footer-meta {
  width: 100%;
  text-align: left;
  color: var(--ink-faint);
  font-size: 0.8rem;
  padding-top: 1rem;
  border-top: var(--rule-hair) solid var(--line);
  margin-top: 0;
}

/* Subpage content shell */
.page-header {
  padding: clamp(3rem, 8vw, 5rem) 0 2rem;
  border-bottom: var(--rule-hair) solid var(--line);
}
.page-header h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 12px;
}
.page-header p {
  color: var(--ink-soft);
  font-size: 1.1rem;
  max-width: 40rem;
  margin: 0;
}
.page-content { padding: 2.5rem 0 5rem; }