/* ============================================================
   Listo Ventures — Stylesheet
   Palette: deep ink, warm cream, restrained gold accent.
   ============================================================ */

/* ---------- Tokens ---------- */
:root, [data-theme="light"] {
  /* Type */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-hero: clamp(2.5rem, 1rem + 5.5vw, 5.5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --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;

  /* Colors — Light (white / grey / black) */
  --color-bg:           #ffffff;
  --color-surface:      #f6f6f6;
  --color-surface-2:    #ffffff;
  --color-surface-offset:#f0f0f0;
  --color-divider:      #e2e2e2;
  --color-border:       #d0d0d0;

  --color-text:         #0a0a0a;
  --color-text-muted:   #5e5e5e;
  --color-text-faint:   #a0a0a0;
  --color-text-inverse: #ffffff;

  --color-primary:      #0a0a0a;        /* black for buttons */
  --color-primary-hover:#000000;
  --color-accent:       #0a0a0a;        /* monochrome accent */
  --color-accent-hover: #000000;

  /* Radii / shadows */
  --radius-sm: 2px;
  --radius-md: 4px;
  --transition-interactive: 220ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 2px rgba(26, 31, 43, 0.06);
  --shadow-md: 0 8px 24px rgba(26, 31, 43, 0.08);

  /* Type families */
  --font-display: 'Instrument Serif', 'Iowan Old Style', Georgia, serif;
  --font-body: 'Inter', 'Helvetica Neue', system-ui, sans-serif;
  --font-brand: 'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* Layout */
  --container-max: 1200px;
  --container-pad: clamp(1.25rem, 4vw, 2.5rem);
}

/* Dark mode */
[data-theme="dark"] {
  --color-bg:           #0a0a0a;
  --color-surface:      #141414;
  --color-surface-2:    #1a1a1a;
  --color-surface-offset:#0f0f0f;
  --color-divider:      #262626;
  --color-border:       #333333;

  --color-text:         #f0f0f0;
  --color-text-muted:   #9a9a9a;
  --color-text-faint:   #5a5a5a;
  --color-text-inverse: #0a0a0a;

  --color-primary:      #f0f0f0;
  --color-primary-hover:#ffffff;
  --color-accent:       #f0f0f0;
  --color-accent-hover: #ffffff;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.35);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:           #0a0a0a;
    --color-surface:      #141414;
    --color-surface-2:    #1a1a1a;
    --color-surface-offset:#0f0f0f;
    --color-divider:      #262626;
    --color-border:       #333333;
    --color-text:         #f0f0f0;
    --color-text-muted:   #9a9a9a;
    --color-text-faint:   #5a5a5a;
    --color-text-inverse: #0a0a0a;
    --color-primary:      #f0f0f0;
    --color-primary-hover:#ffffff;
    --color-accent:       #f0f0f0;
    --color-accent-hover: #ffffff;
  }
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }

h1, h2, h3, h4 { text-wrap: balance; line-height: 1.1; font-weight: 500; }
p { text-wrap: pretty; max-width: 65ch; }

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

::selection { background: var(--color-accent); color: var(--color-text-inverse); }

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

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

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--color-divider) 60%, transparent);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  font-family: var(--font-brand);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.brand:hover { color: var(--color-text); }
.brand__mark { color: var(--color-text); flex: none; }
.brand__name { font-weight: 500; }

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}
.nav a:hover { color: var(--color-text); }
.nav__cta {
  color: var(--color-text) !important;
  border: 1px solid var(--color-border);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
}
.nav__cta:hover {
  background: var(--color-text);
  color: var(--color-text-inverse) !important;
  border-color: var(--color-text);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  border: 1px solid transparent;
}
.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-border);
}

@media (max-width: 720px) {
  .nav { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(4rem, 10vw, 8rem);
  position: relative;
}
.hero__inner { max-width: 980px; }

.eyebrow,
.section__eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.02;
  margin-bottom: var(--space-8);
  max-width: 18ch;
}
.hero__title .accent {
  color: var(--color-text);
  font-style: italic;
}

.hero__lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-16);
  line-height: 1.5;
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  max-width: 720px;
}
.hero__meta > div {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.meta__label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}
.meta__value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
}

@media (max-width: 640px) {
  .hero__meta { grid-template-columns: 1fr; gap: var(--space-6); }
}

/* ---------- Section base ---------- */
.section {
  padding-block: clamp(4rem, 8vw, 7rem);
}
.section--muted {
  background: var(--color-surface);
  border-block: 1px solid var(--color-divider);
}

.rule {
  border: 0;
  border-top: 1px solid var(--color-divider);
  width: 100%;
  margin: 0;
}

.section__head {
  margin-bottom: var(--space-16);
  max-width: 720px;
}
.section__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

/* ---------- 2-col approach ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.grid-2__lead .section__title { max-width: 14ch; }
.grid-2__body p { color: var(--color-text-muted); font-size: var(--text-base); }
.grid-2__body p + p { margin-top: var(--space-4); }

@media (max-width: 820px) {
  .grid-2 { grid-template-columns: 1fr; }
}

/* ---------- Cards (focus) ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--color-divider);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.card {
  background: var(--color-surface);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-height: 220px;
}
.card__num {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-accent);
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}
.card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
}
.card p { color: var(--color-text-muted); font-size: var(--text-sm); line-height: 1.6; }

@media (max-width: 720px) {
  .cards { grid-template-columns: 1fr; }
}

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-8);
  counter-reset: step;
}
.step {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-text);
}
.step__num {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}
.step__body h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}
.step__body p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}

@media (max-width: 980px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
}

/* ---------- Contact ---------- */
.contact {
  background:
    linear-gradient(180deg, var(--color-bg), var(--color-surface-offset));
  border-top: 1px solid var(--color-divider);
}
[data-theme="dark"] .contact {
  background: linear-gradient(180deg, var(--color-bg), var(--color-surface-offset));
}
.contact__inner {
  max-width: 820px;
  text-align: center;
  padding-block: var(--space-8);
}
.contact__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin: var(--space-4) auto var(--space-6);
  max-width: 22ch;
}
.contact__body {
  color: var(--color-text-muted);
  margin: 0 auto var(--space-10);
  max-width: 56ch;
}
.contact__cta {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  padding: var(--space-4) var(--space-8);
  border-bottom: 1px solid var(--color-accent);
  transition: color var(--transition-interactive), border-color var(--transition-interactive);
}
.contact__cta:hover {
  color: var(--color-accent);
  border-color: var(--color-text);
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-10);
  background: var(--color-bg);
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-brand);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-text);
}
.footer__meta {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.footer__email {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.footer__email:hover { color: var(--color-accent); }