/* ============================================================
   Mocha Analytics - Primitives (v1)
   Buttons · badge · card · nav · footer · form · accordion ·
   pricing card. Composed by tokens.css.
   Mobile-first; @media (min-width) only.
   ============================================================ */

/* ── Focus ring (system-wide) ─────────────────────────────── */
*:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
}

/* ── Custom scrollbar (system-wide) ───────────────────────────
   Neobrutalist: solid black thumb on the paper track, no blur, hard
   edges. Hover snaps to the yellow accent. Firefox uses the thin
   scrollbar-color fallback. */
:root {
  scrollbar-color: var(--ink) var(--paper-tint);
}
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}
::-webkit-scrollbar-track {
  background: var(--paper-tint);
}
::-webkit-scrollbar-thumb {
  background: var(--ink);
  border: 3px solid var(--paper-tint);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--yellow-hover);
}
::-webkit-scrollbar-corner {
  background: var(--paper-tint);
}

/* ============================================================
   BUTTONS
   ============================================================ */

/* Primary - neo moment. Yellow + 2px black border + hard shadow. */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 24px;
  font: 700 14px/1 var(--font-sans);
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--yellow);
  border: var(--border-strong);
  box-shadow: var(--shadow-block);
  white-space: nowrap;
  cursor: pointer;
  transition: transform var(--dur-1) var(--ease),
              box-shadow var(--dur-1) var(--ease),
              background var(--dur-1) var(--ease);
}
.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-block-lg);
  background: var(--yellow-hover);
}
.btn:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--ink);
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}
.btn--sm { padding: 10px 16px; font-size: 13px; }

/* Ghost on dark - quiet alternative on dark backgrounds */
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 24px;
  font: 700 14px/1 var(--font-sans);
  letter-spacing: 0.04em;
  color: var(--on-dark-strong);
  background: transparent;
  border: 1px solid var(--line-on-dark);
  white-space: nowrap;
  cursor: pointer;
  transition: border-color var(--dur-1) var(--ease),
              background var(--dur-1) var(--ease);
}
.btn-ghost:hover {
  border-color: var(--on-dark-strong);
  background: rgba(255,255,255,0.04);
}
.btn-ghost--sm { padding: 10px 16px; font-size: 13px; }

/* Ghost on light */
.btn-ghost-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 24px;
  font: 700 14px/1 var(--font-sans);
  letter-spacing: 0.04em;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  white-space: nowrap;
  cursor: pointer;
  transition: border-color var(--dur-1) var(--ease),
              background var(--dur-1) var(--ease);
}
.btn-ghost-light:hover {
  border-color: var(--ink);
  background: var(--paper-tint);
}

/* Text link with a small arrow / play glyph */
.btn-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 14px 0;
  font: 500 14px/1 var(--font-sans);
  color: var(--on-dark-strong);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-1) var(--ease);
}
.btn-link:hover { border-bottom-color: var(--on-dark-strong); }
.btn-link svg { width: 14px; height: 14px; }

/* ============================================================
   BADGE  (used only for "Most popular" on Growth pricing card)
   ============================================================ */
.badge-popular {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--yellow);
  border: var(--border-strong);
  padding: 4px 12px;
  font: 700 11px/1 var(--font-sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  white-space: nowrap;
}

/* ============================================================
   CARD
   ============================================================ */
.card {
  background: var(--white);
  border: var(--border-hair);
  padding: var(--space-6);
}

/* ============================================================
   FORM - the "Register interest" composition
   ============================================================ */
.form-row {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 460px;
  border: var(--border-strong);
  background: var(--white);
}
@media (min-width: 480px) {
  .form-row { flex-direction: row; }
}
.form-row input[type="email"] {
  flex: 1;
  padding: 14px 16px;
  font: 400 15px/1.4 var(--font-sans);
  background: transparent;
  border: 0;
  outline: none;
  color: var(--ink);
  min-width: 0;
}
.form-row input[type="email"]::placeholder { color: var(--ink-soft); }
.form-row button {
  padding: 14px 22px;
  font: 700 13px/1 var(--font-sans);
  letter-spacing: 0.04em;
  background: var(--yellow);
  color: var(--ink);
  border: 0;
  border-top: var(--border-strong);
  white-space: nowrap;
  cursor: pointer;
  transition: background var(--dur-1) var(--ease);
}
@media (min-width: 480px) {
  .form-row button {
    border-top: 0;
    border-left: var(--border-strong);
  }
}
.form-row button:hover { background: var(--yellow-hover); }

.form-row--dark {
  background: rgba(255,255,255,0.04);
  border-color: var(--on-dark-strong);
}
.form-row--dark input[type="email"] { color: var(--on-dark-strong); }
.form-row--dark input[type="email"]::placeholder { color: rgba(255,255,255,0.42); }
.form-row--dark button {
  border-top-color: var(--on-dark-strong);
}
@media (min-width: 480px) {
  .form-row--dark button {
    border-left-color: var(--on-dark-strong);
  }
}

.form-success {
  display: none;
  margin-top: var(--space-3);
  font: 500 14px/1.5 var(--font-sans);
  color: var(--ink-body);
}
.form-success.is-visible { display: block; }
.form-success--dark { color: var(--on-dark-body); }

/* ============================================================
   NAV - three states
   --on-dark   transparent on hero
   --scrolled  solid ink-strong with yellow underline
   --light     white with hairline bottom border
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 var(--gutter-sm);
  transition: background var(--dur-2) var(--ease),
              border-color var(--dur-2) var(--ease);
}
@media (min-width: 768px) { .nav { padding: 0 var(--gutter-md); } }
@media (min-width: 1024px) { .nav { padding: 0 var(--gutter); } }

.nav__inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.nav__logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.nav__logo-img {
  height: 44px;
  width: auto;
  display: block;
}
.nav__logo-img--dark { display: none; }

.nav__links {
  display: none;
  gap: var(--space-6);
}
@media (min-width: 880px) {
  .nav__links { display: inline-flex; align-items: center; }
}
.nav__link {
  font: 500 14px/1 var(--font-sans);
  color: var(--ink-body);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-1) var(--ease),
              border-color var(--dur-1) var(--ease);
}
.nav__link:hover { color: var(--ink); border-bottom-color: var(--ink); }

.nav__right {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
}
.nav__login {
  display: none;
  font: 500 14px/1 var(--font-sans);
  color: var(--ink-body);
  transition: color var(--dur-1) var(--ease);
}
@media (min-width: 768px) { .nav__login { display: inline-block; } }
.nav__login:hover { color: var(--ink); }

/* State: on-dark (hero default) - transparent over ink-strong */
.nav--on-dark { background: transparent; }
.nav--on-dark .nav__logo-img--light { display: none; }
.nav--on-dark .nav__logo-img--dark { display: block; }
.nav--on-dark .nav__link { color: var(--on-dark-body); }
.nav--on-dark .nav__link:hover { color: var(--on-dark-strong); border-bottom-color: var(--on-dark-strong); }
.nav--on-dark .nav__login { color: var(--on-dark-body); }
.nav--on-dark .nav__login:hover { color: var(--on-dark-strong); }

/* State: scrolled - solid ink-strong, yellow underline */
.nav--scrolled {
  background: var(--ink-strong);
  border-bottom: 1px solid var(--yellow);
}
.nav--scrolled .nav__logo-img--light { display: none; }
.nav--scrolled .nav__logo-img--dark { display: block; }
.nav--scrolled .nav__link { color: var(--on-dark-body); }
.nav--scrolled .nav__link:hover { color: var(--on-dark-strong); border-bottom-color: var(--on-dark-strong); }
.nav--scrolled .nav__login { color: var(--on-dark-body); }
.nav--scrolled .nav__login:hover { color: var(--on-dark-strong); }

/* State: light page - white, hairline bottom */
.nav--light {
  background: var(--white);
  border-bottom: var(--border-hair);
}

/* Mobile menu trigger - shown only when nav links collapse */
.nav__burger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: inherit;
  cursor: pointer;
  position: relative;
}
@media (min-width: 880px) { .nav__burger { display: none; } }
.nav__burger-bars {
  width: 18px;
  height: 12px;
  position: relative;
}
.nav__burger-bars::before,
.nav__burger-bars::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur-2) var(--ease),
              top var(--dur-2) var(--ease);
}
.nav__burger-bars::before { top: 2px; }
.nav__burger-bars::after  { top: 8px; }
.nav__burger[aria-expanded="true"] .nav__burger-bars::before {
  top: 5px; transform: rotate(45deg);
}
.nav__burger[aria-expanded="true"] .nav__burger-bars::after {
  top: 5px; transform: rotate(-45deg);
}

/* Mobile sheet - anchored beneath the nav, slides down */
.nav-sheet {
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: var(--ink-strong);
  border-top: 1px solid var(--line-on-dark);
  padding: var(--space-5) var(--gutter-sm) var(--space-7);
  z-index: 99;
  transform: translateY(-12px);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--dur-2) var(--ease),
              opacity var(--dur-2) var(--ease),
              visibility 0s linear var(--dur-2);
}
.nav-sheet.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  transition: transform var(--dur-2) var(--ease),
              opacity var(--dur-2) var(--ease),
              visibility 0s linear 0s;
}
.nav-sheet__links {
  display: flex;
  flex-direction: column;
}
.nav-sheet__links a {
  font: 500 18px/1 var(--font-sans);
  color: var(--on-dark-body);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--line-on-dark);
  transition: color var(--dur-1) var(--ease);
}
.nav-sheet__links a:hover { color: var(--on-dark-strong); }
.nav-sheet__cta {
  display: block;
  margin-top: var(--space-5);
}
.nav-sheet__login {
  display: inline-block;
  margin-top: var(--space-5);
  font: 500 14px/1 var(--font-sans);
  color: var(--on-dark-soft);
}
@media (min-width: 880px) { .nav-sheet { display: none; } }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--ink-strong);
  color: var(--on-dark-body);
  padding-top: var(--space-9);
  padding-bottom: var(--space-6);
}
.footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-7);
}
@media (min-width: 768px) {
  .footer__top { grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--space-8); }
}
.footer__brand-mark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font: 500 16px/1 var(--font-sans);
  color: var(--on-dark-strong);
}
.footer__brand-mark img {
  height: 32px;
  width: auto;
  display: block;
}
.footer__brand-blurb {
  font: 400 14px/1.65 var(--font-sans);
  color: var(--on-dark-soft);
  max-width: 280px;
  margin-bottom: var(--space-5);
}
.footer__col-title {
  font: 700 12px/1 var(--font-sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-dark-strong);
  margin-bottom: var(--space-4);
}
.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer__col a {
  font: 400 14px/1 var(--font-sans);
  color: var(--on-dark-body);
  transition: color var(--dur-1) var(--ease);
}
.footer__col a:hover { color: var(--on-dark-strong); }

.footer__bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--line-on-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.footer__copy {
  font: 400 13px/1.4 var(--font-sans);
  color: var(--on-dark-soft);
}
.footer__social {
  display: inline-flex;
  gap: var(--space-4);
  align-items: center;
}
.footer__social a {
  color: var(--on-dark-soft);
  display: inline-flex;
  transition: color var(--dur-1) var(--ease);
}
.footer__social a:hover { color: var(--on-dark-strong); }
.footer__social svg { width: 18px; height: 18px; }

/* ============================================================
   ACCORDION - native <details>/<summary>
   ============================================================ */
.accordion { border-top: var(--border-hair); }
.accordion__item { border-bottom: var(--border-hair); }
.accordion__item summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  font: 500 18px/1.4 var(--font-sans);
  color: var(--ink);
  cursor: pointer;
}
.accordion__item summary::-webkit-details-marker { display: none; }
.accordion__item summary::after {
  content: '+';
  font: 400 24px/1 var(--font-sans);
  color: var(--ink-soft);
  flex-shrink: 0;
  transition: color var(--dur-1) var(--ease);
}
.accordion__item summary:hover::after { color: var(--ink); }
.accordion__item[open] summary::after { content: '−'; color: var(--ink); }
.accordion__body {
  padding: 0 0 var(--space-5);
  font: 400 15px/1.65 var(--font-sans);
  color: var(--ink-body);
  max-width: 70ch;
}

/* ============================================================
   PRICING CARD
   ============================================================ */
.pricing-card {
  position: relative;
  background: var(--white);
  border: var(--border-hair);
  padding: var(--space-6) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.pricing-card__tier {
  font: 700 12px/1 var(--font-sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font: 500 44px/1 var(--font-mono);
  letter-spacing: -0.02em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.pricing-card__price small {
  font: 400 13px/1 var(--font-sans);
  color: var(--ink-soft);
  letter-spacing: 0;
}
.pricing-card__strike {
  font: 400 13px/1.2 var(--font-mono);
  color: var(--ink-soft);
  text-decoration: line-through;
  min-height: 16px;
}
/* Order cap: the buyer's first "is this for me?" check.
   Yellow-wash pill with ink border so the limit reads at a glance
   instead of disappearing as muted body text. */
.pricing-card__limit {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 7px 11px;
  background: var(--yellow-wash);
  border: 1px solid var(--ink);
  font: 700 12px/1 var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  margin: var(--space-3) 0 var(--space-2);
}
.pricing-card__sub {
  font: 400 14px/1.5 var(--font-sans);
  color: var(--ink-body);
  min-height: 42px;
}
.pricing-card__rule {
  height: 0;
  border: 0;
  border-top: var(--border-hair);
  margin: var(--space-1) 0 var(--space-2);
}
.pricing-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font: 400 14px/1.4 var(--font-sans);
  color: var(--ink-body);
}
.pricing-card__features li {
  position: relative;
  padding-left: 22px;
}
.pricing-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  width: 12px;
  height: 6px;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg);
}
.pricing-card__features li.is-heading {
  padding-left: 0;
  font-weight: 700;
  color: var(--ink);
  font-size: 13px;
  margin-top: var(--space-2);
}
.pricing-card__features li.is-heading::before { display: none; }
.pricing-card__features li.is-heading:first-child { margin-top: 0; }

/* Popular variant - neo moment #3 */
.pricing-card--popular {
  border: var(--border-strong);
  box-shadow: var(--shadow-block);
}