/* ===== DESIGN TOKENS (OKLCH) ===== */
:root {
  /* Surfaces */
  --bg:           oklch(97.5% 0.008 85);
  --bg-alt:       oklch(94%   0.012 85);
  --bg-tint:      oklch(94%   0.026 182);
  --bg-tint-deep: oklch(90%   0.036 182);

  /* Brand — deep forest teal */
  --green-900:    oklch(16%   0.058 182);
  --green-800:    oklch(22%   0.076 182);
  --green-700:    oklch(30%   0.093 182);  /* primary */
  --green-600:    oklch(38%   0.106 182);
  --green-500:    oklch(48%   0.108 182);
  --green-200:    oklch(82%   0.050 182);
  --green-100:    oklch(91%   0.028 182);

  /* Gold accent — use at 10% weight max */
  --gold-500:     oklch(73%   0.130 78);
  --gold-400:     oklch(80%   0.105 78);
  --gold-200:     oklch(90%   0.060 78);

  /* Text */
  --text:         oklch(19%   0.015 85);
  --text-muted:   oklch(50%   0.012 85);
  --text-subtle:  oklch(70%   0.008 85);

  /* Borders */
  --border:       oklch(88%   0.010 85);
  --border-med:   oklch(82%   0.012 85);

  /* Semantic aliases */
  --color-primary:       var(--green-700);
  --color-primary-dark:  var(--green-800);
  --color-primary-light: var(--green-600);
  --color-accent:        var(--gold-500);
  --color-accent-light:  var(--gold-400);
  --color-bg:            var(--bg);
  --color-bg-alt:        var(--bg-alt);
  --color-text:          var(--text);
  --color-text-muted:    var(--text-muted);
  --color-white:         oklch(100% 0 0);
  --color-star:          oklch(75% 0.16 68);
  --color-border:        var(--border);

  /* Typography */
  --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body:    'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing (4pt base) */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-6:  24px;
  --space-8:  32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  /* Shape */
  --radius-sm:   4px;
  --radius:      8px;
  --radius-lg:   14px;
  --radius-full: 9999px;

  /* Shadow */
  --shadow-sm: 0 1px 3px oklch(19% 0.015 85 / 0.07);
  --shadow:    0 4px 16px oklch(19% 0.015 85 / 0.09);
  --shadow-lg: 0 8px 32px oklch(19% 0.015 85 / 0.12);

  --transition: 0.22s ease;
  --max-width:  1200px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.2;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Fluid scale for marketing headings */
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
h4 { font-size: 1.05rem; }

p { max-width: 70ch; }

/* ===== LAYOUT ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section        { padding: var(--space-24) 0; }
.section--sm    { padding: var(--space-12) 0; }
.section--alt   { background: var(--bg-alt); }
.section--tint  { background: var(--bg-tint); }
.section--dark  { background: var(--green-800); color: var(--color-white); }
.section--dark h2, .section--dark h3, .section--dark h4 { color: var(--color-white); }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-700);
  margin-bottom: var(--space-3);
}
.section--dark .section-eyebrow { color: var(--gold-400); }

.section-title { margin-bottom: var(--space-4); }

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.08rem;
  margin-bottom: var(--space-12);
  max-width: 62ch;
}
.section--dark .section-subtitle { color: oklch(100% 0 0 / 0.68); }

.text-center { text-align: center; }
.text-center .section-subtitle { margin-left: auto; margin-right: auto; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 13px 26px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.97rem;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
  line-height: 1;
}

.btn--primary {
  background: var(--green-700);
  color: var(--color-white);
  border-color: var(--green-700);
}
.btn--primary:hover {
  background: var(--green-800);
  border-color: var(--green-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn--accent {
  background: var(--gold-500);
  color: var(--green-900);
  border-color: var(--gold-500);
  font-weight: 700;
}
.btn--accent:hover {
  background: var(--gold-400);
  border-color: var(--gold-400);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: oklch(100% 0 0 / 0.6);
}
.btn--outline:hover {
  background: oklch(100% 0 0 / 0.10);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

.btn--outline-green {
  background: transparent;
  color: var(--green-700);
  border-color: var(--green-700);
}
.btn--outline-green:hover {
  background: var(--green-700);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--green-700);
  border-color: transparent;
  padding-left: 0;
  padding-right: 0;
}
.btn--ghost:hover { color: var(--green-800); }

.btn--lg { padding: 16px 36px; font-size: 1.05rem; }

/* ===== STARS ===== */
.stars { color: var(--color-star); letter-spacing: 2px; }

/* ===== REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .section { padding: var(--space-16) 0; }
  .hide-mobile { display: none !important; }
}
@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__scroll { animation: none; }

  .btn--primary:hover,
  .btn--accent:hover,
  .btn--outline:hover,
  .btn--outline-green:hover { transform: none; }
}