/* ============================================================
   SettheTONE ATL — Landing Page Styles
   Brand: Ink #111418 + Tone Orange #FF4D18, Oswald + Inter
   ============================================================ */

/* ---- Design Tokens ---- */
:root,
[data-theme='light'] {
  --color-bg: #f6f5f1;
  --color-surface: #ffffff;
  --color-surface-2: #eeede7;
  --color-surface-offset: #f1efea;
  --color-border: #e0ded7;
  --color-divider: #e7e4dd;
  --color-text: #111418;
  --color-text-muted: #6b6b66;
  --color-text-faint: #a8a8a2;
  --color-text-inverse: #f6f5f1;
  --color-primary: #ff4d18;
  --color-primary-hover: #d93c0c;
  --color-primary-active: #b8320a;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.83rem + 0.3vw, 0.9375rem);
  --text-base: clamp(1rem, 0.96rem + 0.25vw, 1.0625rem);
  --text-lg: clamp(1.2rem, 1.05rem + 0.6vw, 1.5rem);
  --text-xl: clamp(1.6rem, 1.25rem + 1.4vw, 2.4rem);
  --text-2xl: clamp(2.1rem, 1.3rem + 3.2vw, 4rem);
  --text-3xl: clamp(2.6rem, 1rem + 6vw, 5.5rem);

  --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; --space-24: 6rem; --space-32: 8rem;

  --radius-sm: 0.375rem; --radius-md: 0.625rem; --radius-lg: 0.9rem; --radius-full: 9999px;
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 2px rgba(17,20,24,0.06);
  --shadow-md: 0 6px 20px rgba(17,20,24,0.08);
  --shadow-lg: 0 16px 44px rgba(17,20,24,0.12);
  --content-narrow: 680px; --content-default: 1040px; --content-wide: 1200px;

  --font-display: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

[data-theme='dark'] {
  --color-bg: #111418;
  --color-surface: #1a1d22;
  --color-surface-2: #22262c;
  --color-surface-offset: #16191d;
  --color-border: #2c3138;
  --color-divider: #23272d;
  --color-text: #f6f5f1;
  --color-text-muted: #9a9a94;
  --color-text-faint: #5f636b;
  --color-text-inverse: #111418;
  --color-primary: #ff5a2c;
  --color-primary-hover: #ff7a4d;
  --color-primary-active: #ffa07a;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 6px 20px rgba(0,0,0,0.45);
  --shadow-lg: 0 16px 44px rgba(0,0,0,0.55);
}

/* ---- Reset / Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: none; text-size-adjust: none;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility; scroll-behavior: smooth;
  scroll-padding-top: 6rem; hanging-punctuation: first last;
}
body {
  min-height: 100dvh; line-height: 1.6;
  font-family: var(--font-body); font-size: var(--text-base);
  color: var(--color-text); background-color: var(--color-bg);
}
img, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { text-wrap: balance; line-height: 1.12; font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; }
p, li { text-wrap: pretty; max-width: 72ch; }
::selection { background: var(--color-primary); color: #fff; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
button { cursor: pointer; background: none; border: none; }
a, button, [role='button'], input { transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition); }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; } }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ---- Layout ---- */
.container { width: 100%; max-width: var(--content-default); margin-inline: auto; padding-inline: var(--space-6); }
.narrow { max-width: var(--content-narrow); }
.section { padding-block: clamp(var(--space-12), 7vw, var(--space-24)); }
.center { text-align: center; }
.kicker {
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-xs);
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.section__title { font-size: var(--text-xl); max-width: 20ch; }
.section__title.center { margin-inline: auto; max-width: 24ch; }
.lead { font-size: var(--text-base); color: var(--color-text-muted); margin-top: var(--space-4); }
.lead.center { margin-inline: auto; }
.accent { color: var(--color-primary); }

/* ---- Header ---- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.header--scrolled { border-bottom-color: var(--color-border); box-shadow: var(--shadow-sm); }
.header__inner { display: flex; align-items: center; gap: var(--space-4); min-height: 4.5rem; }
.logo { display: inline-flex; align-items: center; gap: var(--space-3); font-family: var(--font-display); font-weight: 700; letter-spacing: 0.04em; font-size: 1.05rem; }
.logo__mark rect { fill: var(--color-primary); }
.logo__atl { color: var(--color-primary); }
.nav { display: flex; gap: var(--space-6); margin-left: auto; }
.nav__link { font-size: var(--text-sm); color: var(--color-text-muted); font-weight: 500; }
.nav__link:hover { color: var(--color-text); }
.header__actions { display: flex; align-items: center; gap: var(--space-3); margin-left: var(--space-2); }
.theme-toggle { display: inline-flex; align-items: center; justify-content: center; width: 2.25rem; height: 2.25rem; border-radius: var(--radius-full); color: var(--color-text-muted); border: 1px solid var(--color-border); }
.theme-toggle:hover { color: var(--color-text); border-color: var(--color-text-faint); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm);
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: var(--space-3) var(--space-6); border-radius: var(--radius-full);
  border: 1.5px solid transparent; white-space: nowrap;
}
.btn--primary { background: var(--color-primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--primary:active { background: var(--color-primary-active); transform: translateY(0); }
.btn--ghost { color: var(--color-text); border-color: var(--color-border); background: transparent; }
.btn--ghost:hover { border-color: var(--color-text-faint); background: var(--color-surface); }
.btn--sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); }
.btn--lg { font-size: var(--text-base); padding: var(--space-4) var(--space-10); }

/* ---- Hero ---- */
.hero { padding-block: clamp(var(--space-16), 9vw, var(--space-32)) clamp(var(--space-12), 7vw, var(--space-24)); position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(60% 50% at 80% 0%, color-mix(in oklab, var(--color-primary) 14%, transparent), transparent 70%),
    radial-gradient(50% 40% at 10% 20%, color-mix(in oklab, var(--color-primary) 8%, transparent), transparent 70%);
}
.hero__inner { max-width: 60rem; }
.eyebrow { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: var(--space-6); }
.eyebrow__dot { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--color-primary); display: inline-block; }
.hero__title { font-size: var(--text-3xl); font-weight: 700; letter-spacing: -0.02em; max-width: 16ch; }
.hero__sub { font-size: var(--text-lg); color: var(--color-text-muted); margin-top: var(--space-6); max-width: 52ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-8); }
.hero__fine { font-size: var(--text-sm); color: var(--color-text-faint); margin-top: var(--space-5); }

/* ---- Thesis ---- */
.section--thesis { border-top: 1px solid var(--color-divider); }
.section--thesis .section__title { max-width: 22ch; }

/* ---- Stats ---- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin-top: var(--space-8); }
.stat { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-8) var(--space-6); text-align: center; }
.stat__title { display: block; font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); color: var(--color-text); letter-spacing: -0.01em; }
.stat__label { display: block; font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-3); }
.math__note { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-6); text-align: center; max-width: 48ch; margin-inline: auto; }

/* ---- Proof / Founder ---- */
.section--proof { border-top: 1px solid var(--color-divider); }
.proof__founder { margin-top: var(--space-10); padding: var(--space-8) var(--space-6); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); border-left: 3px solid var(--color-primary); }
.proof__bio { font-size: var(--text-base); color: var(--color-text); font-style: italic; line-height: 1.65; }
.proof__name { font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm); color: var(--color-primary); margin-top: var(--space-4); letter-spacing: 0.04em; }
.partner-badge { display: flex; flex-direction: column; align-items: center; gap: var(--space-1); margin-top: var(--space-8); padding: var(--space-6); border: 1px dashed var(--color-border); border-radius: var(--radius-md); text-align: center; }
.partner-badge__label { font-family: var(--font-display); font-weight: 600; font-size: var(--text-xs); letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-primary); }
.partner-badge__name { font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); color: var(--color-text); }
.partner-badge__desc { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ---- Split ---- */
.split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-12); align-items: center; }
.split__col--cards { display: flex; flex-direction: column; gap: var(--space-4); }
.card { border-radius: var(--radius-lg); padding: var(--space-8); border: 1px solid var(--color-border); }
.card--you { background: var(--color-surface); }
.card--tone { background: var(--color-text); color: var(--color-text-inverse); border-color: transparent; }
.card__tag { font-family: var(--font-display); font-weight: 600; font-size: var(--text-xs); letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-primary); }
.card__list { margin-top: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); font-weight: 500; }
.card__list li::before { content: "+ "; color: var(--color-primary); font-weight: 700; }
.card--tone .card__tag { color: var(--color-primary); }
.card__big { display: block; font-family: var(--font-display); font-weight: 700; font-size: var(--text-xl); margin-top: var(--space-3); }

/* ---- Included grid ---- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin-top: var(--space-10); }
.incl { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition); }
.incl:hover { border-color: var(--color-primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.incl__num { font-family: var(--font-display); font-weight: 700; font-size: var(--text-sm); color: var(--color-primary); letter-spacing: 0.1em; }
.incl__title { font-size: var(--text-base); margin-top: var(--space-3); font-weight: 600; }
.incl p { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-2); }

/* ---- Founder offer ---- */
.section--founder { border-top: 1px solid var(--color-divider); }
.offer { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: var(--space-12); align-items: center; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: clamp(var(--space-8), 5vw, var(--space-16)); }
.offer__price { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-4); }
.offer__anchor { font-size: var(--text-sm); color: var(--color-text-muted); }
.offer__anchor s { color: var(--color-text-faint); }
.offer__big { font-family: var(--font-display); font-weight: 700; font-size: clamp(3rem, 1rem + 8vw, 5rem); color: var(--color-primary); letter-spacing: -0.03em; line-height: 1; }
.offer__cap { font-size: var(--text-sm); color: var(--color-text-muted); }
.offer__line { font-size: var(--text-base); color: var(--color-text); margin-top: var(--space-6); }
.offer__chip { display: inline-block; background: var(--color-primary); color: #fff; font-family: var(--font-display); font-weight: 600; font-size: var(--text-xs); letter-spacing: 0.08em; text-transform: uppercase; padding: var(--space-3) var(--space-5); border-radius: var(--radius-full); }
.offer__vision { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-5); }

/* ---- Winners Circle ---- */
.section--circle { background: var(--color-surface-offset); border-block: 1px solid var(--color-divider); text-align: center; }
.circle { max-width: var(--content-narrow); }
.circle__badge { color: var(--color-primary); margin-bottom: var(--space-6); display: flex; justify-content: center; }
.circle__list { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-8); text-align: left; max-width: 38rem; margin-inline: auto; }
.circle__list li { position: relative; padding-left: var(--space-6); font-size: var(--text-base); color: var(--color-text); }
.circle__list li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 0.55rem; height: 0.55rem; background: var(--color-primary); border-radius: 50%; }

/* ---- Ideal fit ---- */
.checklist { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-8); max-width: 42rem; margin-inline: auto; }
.checklist li { position: relative; padding-left: var(--space-8); font-size: var(--text-base); }
.checklist li::before { content: ""; position: absolute; left: 0; top: 0.3em; width: 1.1rem; height: 1.1rem; border: 2px solid var(--color-primary); border-radius: var(--radius-sm); }
.checklist li::after { content: ""; position: absolute; left: 0.34rem; top: 0.62em; width: 0.4rem; height: 0.7rem; border: solid var(--color-primary); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.fit__bonus { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-6); text-align: center; font-style: italic; }

/* ---- Final CTA (always dark ink slab) ---- */
.section--cta { background: #0d0f12; color: #f6f5f1; text-align: center; }
.cta { max-width: 44rem; }
.cta__title { font-size: var(--text-2xl); color: #ffffff; }
.cta__sub { font-size: var(--text-base); color: rgba(246,245,241,0.72); margin-top: var(--space-4); }
.cta .btn--primary { margin-top: var(--space-8); }
.cta__note { font-size: var(--text-sm); color: rgba(246,245,241,0.55); margin-top: var(--space-4); }

/* ---- Footer ---- */
.footer { border-top: 1px solid var(--color-divider); padding-block: var(--space-8); }
.footer__inner { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-8); align-items: center; justify-content: space-between; }
.footer__brand { font-family: var(--font-display); font-weight: 700; letter-spacing: 0.06em; font-size: var(--text-sm); }
.footer__tag { font-size: var(--text-sm); color: var(--color-text-muted); }
.footer__copy { font-size: var(--text-xs); color: var(--color-text-faint); }

/* ---- Responsive ---- */
@media (max-width: 860px) {
  .nav { display: none; }
  .header__actions { margin-left: auto; }
}
@media (max-width: 760px) {
  .stats { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: var(--space-8); }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .offer { grid-template-columns: 1fr; gap: var(--space-8); }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__title { max-width: none; }
}
@media (max-width: 480px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .incl { padding: var(--space-5); }
  .footer__inner { flex-direction: column; align-items: flex-start; gap: var(--space-2); }
}