/* ==========================================================================
   BarrNone AI — design tokens + components
   Brand preserved from live site: navy #0F2A43, teal #0EA39B.
   Rebuilt with token system, fluid type, and accessibility upgrades.
   ========================================================================== */

:root {
  /* Brand palette (from live barrnoneai.com) */
  --color-navy: #0f2a43;
  --color-navy-2: #13395c;
  --color-navy-3: #10516b;
  --color-teal: #0ea39b;
  --color-teal-hover: #0b857f;
  --color-teal-ink: #086f6a; /* AA-contrast teal for text on white */
  --color-light: #eaf6f5;

  /* Semantic */
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-surface-alt: #f4f9f9;
  --color-text: #0f2a43;
  --color-text-muted: #51616f;
  --color-line: #dce3ea;
  --color-navy-card-text: #cfe0ee;

  /* Fluid type scale */
  --text-xs: clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.84rem + 0.18vw, 0.9375rem);
  --text-base: clamp(1rem, 0.97rem + 0.18vw, 1.0625rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.4vw, 1.1875rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.4vw, 2.125rem);
  --text-2xl: clamp(1.9rem, 1.3rem + 2.4vw, 3.125rem);

  /* Spacing (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 999px;

  --max: 1080px;
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(15, 42, 67, 0.06);
  --shadow-md: 0 10px 26px rgba(15, 42, 67, 0.09);
  --shadow-lg: 0 18px 40px rgba(15, 42, 67, 0.13);

  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

/* ==========================================================================
   Layout primitives
   ========================================================================== */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-6));
}

section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-20));
}

.alt {
  background: var(--color-surface-alt);
}

.kicker {
  color: var(--color-teal-ink);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: var(--text-xs);
  margin: 0 0 var(--space-3);
}

h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 0 0 var(--space-3);
}

.lead {
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  max-width: 62ch;
  margin: 0 0 var(--space-10);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: var(--color-teal);
  color: #fff;
  font-weight: 700;
  font-size: var(--text-sm);
  line-height: 1;
  padding: 0.85rem 1.4rem;
  min-height: 44px;
  border-radius: var(--radius-full);
  border: 1.5px solid transparent;
  transition:
    background var(--transition),
    transform var(--transition),
    border-color var(--transition),
    color var(--transition);
}
.btn:hover {
  background: var(--color-teal-hover);
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}
.btn.lg {
  padding: 1.05rem 1.75rem;
  font-size: var(--text-base);
}
.btn.ghost {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}
.btn.ghost:hover {
  background: var(--color-navy);
  color: #fff;
}
.btn.on-navy {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}
.btn.on-navy:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, #ffffff 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
  box-shadow: var(--shadow-sm);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
  gap: var(--space-4);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1875rem;
  letter-spacing: -0.02em;
  color: var(--color-navy);
}
.brand .logo {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.nav-links {
  display: none;
  gap: var(--space-6);
}
.nav-links a {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 600;
}
.nav-links a:hover {
  color: var(--color-navy);
}
.langtoggle {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  border: 1px solid var(--color-line);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-full);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.langtoggle:hover {
  color: var(--color-navy);
  border-color: var(--color-navy);
}
.nav .btn {
  padding: 0.6rem 1.05rem;
}
@media (min-width: 960px) {
  .nav-links {
    display: flex;
  }
}
/* Very small screens: tighten header so brand + toggle + CTA fit without overflow */
@media (max-width: 420px) {
  .nav {
    gap: var(--space-2);
  }
  .brand {
    font-size: 1.0625rem;
  }
  .nav-right {
    gap: var(--space-2);
  }
  .langtoggle {
    padding: 0.5rem 0.7rem;
  }
  .nav .btn {
    padding: 0.6rem 0.85rem;
  }
}
/* Below 360px, hide the header CTA (still reachable via nav scroll / footer) */
@media (max-width: 360px) {
  .nav-right > .btn {
    display: none;
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  background: linear-gradient(160deg, var(--color-navy) 0%, var(--color-navy-2) 55%, var(--color-navy-3) 100%);
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(14, 163, 155, 0.45), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero .wrap {
  padding-block: clamp(var(--space-16), 9vw, 5.5rem);
  position: relative;
  z-index: 2;
}
.eyebrow {
  display: inline-block;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.24);
  color: #d4f2ef;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  margin-bottom: var(--space-5);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  line-height: 1.06;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-5);
  max-width: 18ch;
  font-weight: 800;
}
.hero .sub {
  font-size: var(--text-lg);
  color: #d7e3ee;
  max-width: 58ch;
  margin: 0 0 var(--space-8);
}
.hero-cta {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  align-items: center;
}
.hero .note {
  font-size: var(--text-sm);
  color: #a9bccc;
  margin-top: var(--space-4);
}

/* ==========================================================================
   Cards / grids
   ========================================================================== */
.grid {
  display: grid;
  gap: var(--space-5);
}
.g2 {
  grid-template-columns: 1fr;
}
.g3,
.g4 {
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .g4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .g2 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 900px) {
  .g3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .g4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition:
    box-shadow var(--transition),
    transform var(--transition),
    border-color var(--transition);
}
.card h3 {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: -0.01em;
}
.card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
a.card {
  display: block;
}
a.card:hover,
.card.hoverable:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: color-mix(in oklab, var(--color-teal) 35%, var(--color-line));
}
.card .learn {
  color: var(--color-teal-ink);
  font-weight: 700;
  margin-top: var(--space-3);
  font-size: var(--text-sm);
}
.card--navy {
  background: var(--color-navy);
  border: 0;
}
.card--navy h3 {
  color: #fff;
}
.card--navy p {
  color: var(--color-navy-card-text);
}

.ico {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: var(--color-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}
.ico svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-teal-ink);
  fill: none;
}
.emoji {
  font-size: 1.4rem;
  line-height: 1;
  margin-bottom: var(--space-3);
  display: block;
}
.tail {
  color: var(--color-navy);
  font-weight: 700;
  margin: var(--space-8) auto 0;
  max-width: 48ch;
  text-align: center;
  font-size: var(--text-base);
}

/* ==========================================================================
   Offers ("Fix what's stalled")
   ========================================================================== */
.offer-band {
  background: linear-gradient(160deg, var(--color-navy) 0%, var(--color-navy-2) 100%);
  color: #fff;
}
.offer-band .kicker {
  color: #7fe3dd;
}
.offer-band h2 {
  color: #fff;
}
.offer-band .lead {
  color: #cfdcea;
}
.offers {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .offers {
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
  }
}
.offer {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.offer.featured {
  background: #fff;
  border-color: var(--color-teal);
  box-shadow: var(--shadow-lg);
}
.offer .offer-tag {
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #7fe3dd;
}
.offer.featured .offer-tag {
  color: var(--color-teal-ink);
}
.offer h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  margin: var(--space-2) 0 0;
  letter-spacing: -0.01em;
}
.offer.featured h3 {
  color: var(--color-navy);
}
.offer .price {
  margin-top: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.offer .price small {
  display: block;
  margin-top: 0.15rem;
  font-size: var(--text-sm);
  font-weight: 600;
  color: #b9cbd9;
}
.offer.featured .price {
  color: var(--color-navy);
}
.offer.featured .price small {
  color: var(--color-text-muted);
}
.offer .offer-desc {
  margin-top: var(--space-4);
  color: #cfdcea;
  font-size: var(--text-sm);
}
.offer.featured .offer-desc {
  color: var(--color-text-muted);
}
.offer ul {
  list-style: none;
  margin: var(--space-5) 0 0;
  display: grid;
  gap: var(--space-2);
}
.offer li {
  display: grid;
  grid-template-columns: 1.1rem 1fr;
  gap: var(--space-2);
  font-size: var(--text-sm);
  align-items: start;
  color: #dbe6f0;
}
.offer.featured li {
  color: var(--color-navy);
}
.offer li svg {
  width: 1rem;
  height: 1rem;
  stroke: #7fe3dd;
  fill: none;
  margin-top: 0.28em;
}
.offer.featured li svg {
  stroke: var(--color-teal-ink);
}
.offer .btn {
  margin-top: var(--space-6);
}
.offer:not(.featured) .btn {
  background: #fff;
  color: var(--color-navy);
}
.offer:not(.featured) .btn:hover {
  background: #eafffd;
}
.scope-note {
  margin-top: var(--space-8);
  padding: var(--space-5);
  border: 1px dashed rgba(255, 255, 255, 0.28);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: #cfdcea;
}
.scope-note b {
  color: #fff;
}

/* ==========================================================================
   Delivered list
   ========================================================================== */
.deliver {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  margin-top: var(--space-8);
}
.deliver li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-line);
  align-items: start;
}
.deliver li:last-child {
  border-bottom: 0;
}
.deliver .k {
  color: var(--color-teal-ink);
  font-weight: 800;
  font-size: var(--text-sm);
  white-space: nowrap;
}
.deliver .v strong {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-navy);
}
.deliver .v span {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ==========================================================================
   Fit (for / not for)
   ========================================================================== */
.fit {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
  margin-top: var(--space-8);
}
@media (min-width: 760px) {
  .fit {
    grid-template-columns: repeat(2, 1fr);
  }
}
.fit-col {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  background: var(--color-surface);
}
.fit-col.no {
  background: var(--color-surface-alt);
}
.fit-col h3 {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-navy);
  margin: 0 0 var(--space-4);
}
.fit-col h3 svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke-width: 2.4;
}
.fit-col.yes h3 svg {
  stroke: var(--color-teal-ink);
}
.fit-col.no h3 svg {
  stroke: var(--color-text-muted);
}
.fit-col ul {
  list-style: none;
  display: grid;
  gap: var(--space-3);
}
.fit-col li {
  display: grid;
  grid-template-columns: 1.2rem 1fr;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-navy);
  align-items: start;
}
.fit-col li svg {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke-width: 2.4;
  margin-top: 0.28em;
}
.fit-col.yes li svg {
  stroke: var(--color-teal-ink);
}
.fit-col.no {
  color: var(--color-text-muted);
}
.fit-col.no li {
  color: var(--color-text-muted);
}
.fit-col.no li svg {
  stroke: #9aa7b3;
}

/* ==========================================================================
   Steps
   ========================================================================== */
.steps {
  margin-top: var(--space-6);
}
.step {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-line);
}
.step:last-child {
  border-bottom: 0;
}
.num {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}
.step h3 {
  margin: 0 0 var(--space-1);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-navy);
}
.step p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ==========================================================================
   Checks
   ========================================================================== */
.checks {
  list-style: none;
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
  margin-top: var(--space-6);
}
@media (min-width: 640px) {
  .checks {
    grid-template-columns: repeat(2, 1fr);
  }
}
.checks li {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  color: var(--color-navy);
  font-weight: 600;
  font-size: var(--text-sm);
}
.checks svg {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  stroke: var(--color-teal-ink);
  fill: none;
  stroke-width: 2.4;
  margin-top: 1px;
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq {
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-line);
}
.faq details {
  border-bottom: 1px solid var(--color-line);
}
.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: -0.01em;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq .plus {
  position: relative;
  flex: 0 0 auto;
  width: 1.4rem;
  height: 1.4rem;
  color: var(--color-teal-ink);
}
.faq .plus::before,
.faq .plus::after {
  content: '';
  position: absolute;
  background: currentColor;
  transition: transform var(--transition);
}
.faq .plus::before {
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  transform: translateY(-50%);
}
.faq .plus::after {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  transform: translateX(-50%);
}
.faq details[open] .plus::after {
  transform: translateX(-50%) scaleY(0);
}
.faq details p {
  padding-bottom: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  max-width: 74ch;
}

/* ==========================================================================
   CTA band
   ========================================================================== */
.band {
  background: linear-gradient(120deg, var(--color-teal), var(--color-teal-hover));
  color: #fff;
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 5vw, var(--space-12));
  text-align: center;
}
.band h2 {
  color: #fff;
}
.band p {
  color: #e6fbf9;
  max-width: 52ch;
  margin: 0 auto var(--space-6);
  font-size: var(--text-lg);
}
.band .btn {
  background: #fff;
  color: var(--color-navy);
}
.band .btn:hover {
  background: #eafffd;
}
.band .callnote {
  color: #eafffd;
  margin: var(--space-4) 0 0;
  font-size: var(--text-sm);
}
.band .callnote a {
  color: #fff;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-navy);
  color: #c6d4e2;
  padding: var(--space-12) 0 var(--space-8);
  font-size: var(--text-sm);
}
.foot-top {
  display: flex;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
  align-items: flex-start;
  margin-bottom: var(--space-6);
}
.site-footer .brand {
  color: #fff;
  font-size: 1.125rem;
  margin-bottom: var(--space-2);
}
.foot-actions {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  flex-wrap: wrap;
}
.site-footer .langtoggle {
  color: #c6d4e2;
  border-color: #274863;
}
.site-footer .langtoggle:hover {
  color: #fff;
  border-color: #fff;
}
.disc {
  font-size: var(--text-xs);
  color: #8aa0b5;
  border-top: 1px solid #1d3c57;
  padding-top: var(--space-5);
  max-width: 84ch;
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */
/* Reveal only hides content when JS is active (progressive enhancement):
   without JS, .reveal content stays fully visible. */
.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .js .reveal {
    opacity: 1;
    transform: none;
  }
}