/* ==========================================================================
   MVM Ventures, LLC — corporate one-pager
   ========================================================================== */

:root {
  /* Type scale */
  --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, 3.25rem);

  /* Spacing */
  --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: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-default: 1080px;
  --content-narrow: 640px;

  --font-display: 'Switzer', 'General Sans', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
}

/* ---- Nexus-structure custom palette: navy ink / warm ivory / brass ---- */
:root,
[data-theme='light'] {
  --color-bg: #f5f3ee;
  --color-surface: #ffffff;
  --color-surface-2: #faf9f6;
  --color-surface-offset: #ece8df;
  --color-divider: #ded9cd;
  --color-border: #d2ccbc;

  --color-text: #1a2233;
  --color-text-muted: #5b6472;
  --color-text-faint: #9aa1ac;
  --color-text-inverse: #f5f3ee;

  --color-primary: #8a6a2f;
  --color-primary-hover: #6e5424;
  --color-primary-active: #56411c;
  --color-primary-highlight: #efe6d3;

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 260 / 0.06);
  --shadow-md: 0 4px 16px oklch(0.2 0.02 260 / 0.08);
  --shadow-lg: 0 16px 40px oklch(0.2 0.02 260 / 0.14);
}

[data-theme='dark'] {
  --color-bg: #0d1220;
  --color-surface: #131a2b;
  --color-surface-2: #171f33;
  --color-surface-offset: #1b2438;
  --color-divider: #232c42;
  --color-border: #2c3650;

  --color-text: #e9e6dc;
  --color-text-muted: #9ca3b5;
  --color-text-faint: #6b7386;
  --color-text-inverse: #0d1220;

  --color-primary: #c9a45c;
  --color-primary-hover: #d9b876;
  --color-primary-active: #e8cb92;
  --color-primary-highlight: #2b2413;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 16px oklch(0 0 0 / 0.35);
  --shadow-lg: 0 16px 40px oklch(0 0 0 / 0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0d1220;
    --color-surface: #131a2b;
    --color-surface-2: #171f33;
    --color-surface-offset: #1b2438;
    --color-divider: #232c42;
    --color-border: #2c3650;
    --color-text: #e9e6dc;
    --color-text-muted: #9ca3b5;
    --color-text-faint: #6b7386;
    --color-text-inverse: #0d1220;
    --color-primary: #c9a45c;
    --color-primary-hover: #d9b876;
    --color-primary-active: #e8cb92;
    --color-primary-highlight: #2b2413;
  }
}

/* ---- 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: var(--space-20);
}

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);
  transition: background-color var(--transition-interactive), color var(--transition-interactive);
}

img, svg { display: block; max-width: 100%; }

h1, h2, h3 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); }
p { text-wrap: pretty; max-width: 65ch; }

a { color: inherit; text-decoration: none; }

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-3) var(--space-5);
  z-index: 100;
}
.skip-link:focus { left: var(--space-4); top: var(--space-4); }

.wrap {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-10));
}

/* ---- Header ---- */
.site-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 var(--color-divider);
  transition: box-shadow var(--transition-interactive);
}
.site-header.header--scrolled { box-shadow: var(--shadow-sm); }

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

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.brand-mark { color: var(--color-text); flex-shrink: 0; }
.brand-accent { stroke: var(--color-primary); fill: none; }
.brand-word { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
}
.brand-suffix {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
}

.site-nav { display: flex; gap: var(--space-8); }
.site-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}
.site-nav a:hover { color: var(--color-text); }

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover { border-color: var(--color-primary); }

/* ---- Hero ---- */
.hero {
  position: relative;
  padding-block: clamp(var(--space-24), 14vw, 9rem) clamp(var(--space-16), 10vw, var(--space-24));
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, color-mix(in oklab, var(--color-text) 6%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in oklab, var(--color-text) 6%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
  pointer-events: none;
}

.hero-inner { position: relative; max-width: 760px; }

.eyebrow {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-5);
}

.hero-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-6);
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-bottom: var(--space-10);
}

.hero-actions { display: flex; gap: var(--space-4); flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  border: 1px solid transparent;
  transition: background var(--transition-interactive), border-color var(--transition-interactive), transform var(--transition-interactive);
}
.btn-primary {
  background: var(--color-text);
  color: var(--color-bg);
}
.btn-primary:hover { background: var(--color-primary); color: var(--color-text-inverse); }
.btn-ghost {
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ---- Sections ---- */
.section { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.section-offset { background: var(--color-surface-offset); }

.kicker {
  display: inline-block;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-faint);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.01em;
  max-width: 24ch;
  margin-bottom: var(--space-6);
}

.body-lg {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 62ch;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2.2fr;
  gap: clamp(var(--space-8), 6vw, var(--space-16));
}
.about-content .section-title { max-width: 20ch; }

.fact-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}
.fact { display: flex; flex-direction: column; gap: var(--space-1); }
.fact-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}
.fact-value { font-size: var(--text-sm); font-weight: 600; }

/* Ventures */
.venture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.venture-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-6), 4vw, var(--space-8));
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
.venture-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.venture-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.venture-status {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}

.venture-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.venture-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Contact */
.contact-inner { max-width: 640px; }
.contact-inner .body-lg { margin-bottom: var(--space-8); }
.contact-email {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: var(--space-1);
  transition: color var(--transition-interactive);
  overflow-wrap: anywhere;
  max-width: 100%;
}
.contact-email:hover { color: var(--color-primary); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-8);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .venture-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 800px) {
  .about-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .site-nav { display: none; }
}

@media (max-width: 620px) {
  .venture-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .contact-email { font-size: var(--text-lg); }
}