/* ==========================================================================
   OLIVE WOOD — marketing site stylesheet
   Design language shared with the Ask Olive product (see
   D:\Olive_Website\public\css\ask-olive.css): dark "indigo night" ground,
   indigo brand + olive-sage accent, restrained motion. Tokens below are the
   same vocabulary, trimmed to what a single static marketing page needs.
   System font stack only — no webfonts, no CDN, no build step.
   ========================================================================== */

/* ---------- 1. TOKENS ---------- */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, 'Cascadia Code', 'Consolas', 'SFMono-Regular', Menlo, monospace;

  --fs-xs: 0.75rem; --fs-sm: 0.8125rem; --fs-base: 0.9375rem; --fs-md: 1.0625rem;
  --fs-lg: 1.25rem; --fs-xl: 1.5rem; --fs-2xl: 1.875rem; --fs-3xl: 2.5rem; --fs-4xl: 3.25rem;
  --lh-tight: 1.15; --lh-snug: 1.35; --lh-body: 1.65;

  --sp-1: 0.25rem; --sp-2: 0.5rem; --sp-3: 0.75rem; --sp-4: 1rem;
  --sp-5: 1.25rem; --sp-6: 1.5rem; --sp-8: 2rem; --sp-10: 2.5rem;
  --sp-12: 3rem; --sp-16: 4rem; --sp-20: 5rem; --sp-24: 6rem;

  --r-sm: 6px; --r-md: 10px; --r-lg: 14px; --r-xl: 20px; --r-full: 999px;

  --ease: cubic-bezier(.3,.7,.3,1);
  --dur-1: 120ms; --dur-2: 200ms; --dur-3: 350ms; --dur-4: 600ms;

  --page-max: 1180px;
  --nav-h: 64px;

  color-scheme: dark;

  /* dark "indigo night" ground — default, matches Ask Olive */
  --bg: #0C0E1C; --bg-raised: #14172A; --bg-elevated: #1B1F36;
  --bg-inset: #090B16; --bg-hover: #1A1E33;
  --ink: #F0F2FC; --text: #C9CEE6; --text-muted: #9BA2C4; --text-faint: #6E7494;
  --line: #262B45; --line-strong: #3A4062;
  --brand: #8B93F8; --brand-strong: #4F46E5; --brand-hover: #6068F0;
  --brand-tint: #1D2040; --on-brand: #FFFFFF;
  --leaf: #A9C86C; --leaf-tint: #1A2114; --leaf-strong: #7FA23C;
  --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--brand);
  --shadow-1: 0 1px 2px rgba(0,0,0,.4);
  --shadow-2: 0 2px 10px rgba(0,0,0,.45);
  --shadow-3: 0 16px 40px rgba(0,0,0,.55);
}

@media (prefers-color-scheme: light) {
  :root[data-theme="light"] {
    color-scheme: light;
    --bg: #F6F7FB; --bg-raised: #FFFFFF; --bg-elevated: #FFFFFF;
    --bg-inset: #EEF0F7; --bg-hover: #F0F1F9;
    --ink: #171A2E; --text: #2B2F4A; --text-muted: #5B6180; --text-faint: #8A90AC;
    --line: #E4E6F0; --line-strong: #C9CDE0;
    --brand: #4F46E5; --brand-strong: #4640D8; --brand-hover: #3B35C4;
    --brand-tint: #EEEDFC; --on-brand: #FFFFFF;
    --leaf: #5D7A2A; --leaf-tint: #EFF3E4; --leaf-strong: #4E6B1E;
    --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--brand);
    --shadow-1: 0 1px 2px rgba(23,26,46,.06);
    --shadow-2: 0 2px 8px rgba(23,26,46,.08), 0 1px 2px rgba(23,26,46,.05);
    --shadow-3: 0 12px 32px rgba(23,26,46,.16), 0 2px 8px rgba(23,26,46,.08);
  }
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #F6F7FB; --bg-raised: #FFFFFF; --bg-elevated: #FFFFFF;
  --bg-inset: #EEF0F7; --bg-hover: #F0F1F9;
  --ink: #171A2E; --text: #2B2F4A; --text-muted: #5B6180; --text-faint: #8A90AC;
  --line: #E4E6F0; --line-strong: #C9CDE0;
  --brand: #4F46E5; --brand-strong: #4640D8; --brand-hover: #3B35C4;
  --brand-tint: #EEEDFC; --on-brand: #FFFFFF;
  --leaf: #5D7A2A; --leaf-tint: #EFF3E4; --leaf-strong: #4E6B1E;
  --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--brand);
  --shadow-1: 0 1px 2px rgba(23,26,46,.06);
  --shadow-2: 0 2px 8px rgba(23,26,46,.08), 0 1px 2px rgba(23,26,46,.05);
  --shadow-3: 0 12px 32px rgba(23,26,46,.16), 0 2px 8px rgba(23,26,46,.08);
}

/* ---------- 2. RESET + BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 400 var(--fs-base)/var(--lh-body) var(--font-sans);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
h1,h2,h3,h4 { color: var(--ink); font-family: var(--font-display); line-height: var(--lh-tight); letter-spacing: -0.015em; margin: 0 0 var(--sp-3); font-weight: 700; }
h1 { font-size: var(--fs-3xl); } h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); } h4 { font-size: var(--fs-lg); }
p { margin: 0 0 var(--sp-4); }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
img, svg { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: var(--r-sm); }
::selection { background: var(--brand); color: var(--on-brand); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

.skip-link { position: absolute; left: var(--sp-4); top: -48px; z-index: 200; background: var(--brand-strong); color: var(--on-brand); padding: var(--sp-2) var(--sp-4); border-radius: var(--r-sm); transition: top var(--dur-2) var(--ease); }
.skip-link:focus { top: var(--sp-2); }

.wrap { max-width: var(--page-max); margin: 0 auto; padding: 0 var(--sp-6); }
.eyebrow { display: inline-flex; align-items: center; gap: var(--sp-2); font: 600 var(--fs-xs)/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); }
.thread-rule { height: 2px; border: 0; background: linear-gradient(90deg, var(--brand), var(--leaf)); border-radius: 1px; margin: var(--sp-4) 0 var(--sp-5); width: 64px; }
.muted { color: var(--text-muted); }
.lede { font-size: var(--fs-md); color: var(--text); max-width: 46rem; }

/* ---------- 3. NAV ---------- */
.topnav { position: sticky; top: 0; z-index: 100; height: var(--nav-h); background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.topnav-inner { max-width: var(--page-max); margin: 0 auto; padding: 0 var(--sp-6); height: 100%; display: flex; align-items: center; gap: var(--sp-6); }
.brand { display: flex; align-items: center; gap: var(--sp-2); color: var(--ink); font: 700 var(--fs-md)/1 var(--font-display); letter-spacing: -0.01em; white-space: nowrap; flex-shrink: 0; }
.brand:hover { text-decoration: none; }
.brand .leaf-mark { width: 24px; height: 24px; flex: none; }
.nav-links { display: flex; align-items: center; gap: var(--sp-1); margin: 0 0 0 auto; }
.nav-links a { display: block; padding: var(--sp-2) var(--sp-3); border-radius: var(--r-sm); color: var(--text-muted); font-size: var(--fs-sm); font-weight: 560; }
.nav-links a:hover { color: var(--ink); background: var(--bg-hover); text-decoration: none; }
.nav-actions { display: flex; align-items: center; gap: var(--sp-3); }
.topnav .nav-burger { display: none; }
@media (max-width: 780px) {
  .nav-links { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--bg-elevated); border-bottom: 1px solid var(--line); padding: var(--sp-2); box-shadow: var(--shadow-2); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: var(--sp-3) var(--sp-4); }
  .topnav .nav-burger { display: inline-flex; }
  .nav-actions { gap: var(--sp-2); }
  .nav-actions .btn-primary { padding: 0 var(--sp-3); font-size: var(--fs-xs); height: 34px; }
}
@media (max-width: 480px) {
  .nav-actions #themeBtn { display: none; }
}

/* ---------- 4. BUTTONS ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  font: 600 var(--fs-sm)/1 var(--font-sans); letter-spacing: 0.01em;
  padding: 0 var(--sp-5); height: 40px; border-radius: var(--r-sm);
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: background var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease), color var(--dur-1) var(--ease), transform var(--dur-1) var(--ease);
  text-decoration: none; }
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { box-shadow: var(--focus-ring); }
.btn-primary { background: var(--brand-strong); color: var(--on-brand); }
.btn-primary:hover { background: var(--brand-hover); }
.btn-secondary { background: var(--bg-raised); color: var(--ink); border-color: var(--line-strong); }
.btn-secondary:hover { background: var(--bg-hover); border-color: var(--text-faint); }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { background: var(--bg-hover); color: var(--ink); }
.btn-icon { width: 40px; padding: 0; }
.btn-sm { height: 32px; padding: 0 var(--sp-3); font-size: var(--fs-xs); }
.btn-lg { height: 48px; padding: 0 var(--sp-6); font-size: var(--fs-base); border-radius: var(--r-md); }

/* ---------- 5. BADGES ---------- */
.badge { display: inline-flex; align-items: center; gap: var(--sp-1); font: 600 var(--fs-xs)/1 var(--font-sans); padding: 4px 10px; border-radius: var(--r-full); border: 1px solid transparent; }
.badge-brand { background: var(--brand-tint); color: var(--brand); }
.badge-leaf { background: var(--leaf-tint); color: var(--leaf); }

/* ---------- 6. HERO ---------- */
.hero { position: relative; padding: var(--sp-24) 0 var(--sp-20); overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -20% -10% auto -10%; height: 140%;
  background:
    radial-gradient(600px 400px at 15% 10%, color-mix(in srgb, var(--brand) 22%, transparent), transparent 60%),
    radial-gradient(560px 420px at 85% 30%, color-mix(in srgb, var(--leaf) 16%, transparent), transparent 60%);
  pointer-events: none; z-index: 0;
}
.hero-inner { position: relative; z-index: 1; max-width: 46rem; }
.hero h1 { font-size: var(--fs-4xl); margin-bottom: var(--sp-5); }
.hero h1 .accent { background: linear-gradient(90deg, var(--brand), var(--leaf)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-lede { font-size: var(--fs-md); color: var(--text); max-width: 40rem; margin-bottom: var(--sp-8); }
.hero-ctas { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-4); }
.hero-microlink { font-size: var(--fs-sm); color: var(--text-muted); }
.hero-microlink a { color: var(--text-muted); text-decoration: underline; text-underline-offset: 3px; }
.hero-microlink a:hover { color: var(--brand); }
@media (max-width: 640px) {
  .hero { padding: var(--sp-16) 0 var(--sp-12); }
  .hero h1 { font-size: var(--fs-3xl); }
}

/* ---------- 7. SECTIONS ---------- */
.section { padding: var(--sp-20) 0; border-top: 1px solid var(--line); }
.section-head { max-width: 42rem; margin-bottom: var(--sp-10); }
.section-alt { background: var(--bg-raised); }
@media (max-width: 640px) { .section { padding: var(--sp-12) 0; } }

/* ---------- 8. CARDS / GRIDS ---------- */
.grid { display: grid; gap: var(--sp-5); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card { background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--r-lg); padding: var(--sp-6); box-shadow: var(--shadow-1); transition: border-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease), transform var(--dur-2) var(--ease); }
.card:hover { border-color: var(--line-strong); box-shadow: var(--shadow-2); transform: translateY(-2px); }
.card-icon { width: 40px; height: 40px; border-radius: var(--r-md); background: var(--brand-tint); color: var(--brand); display: flex; align-items: center; justify-content: center; margin-bottom: var(--sp-4); flex: none; }
.card-icon svg { width: 20px; height: 20px; }
.card h3 { font-size: var(--fs-lg); margin-bottom: var(--sp-2); }
.card p { margin-bottom: 0; color: var(--text-muted); font-size: var(--fs-sm); }

/* ---------- 9. ASK OLIVE PANEL ---------- */
.olive-panel { position: relative; background: linear-gradient(160deg, var(--bg-elevated), var(--bg-raised)); border: 1px solid var(--line); border-radius: var(--r-xl); padding: var(--sp-10); box-shadow: var(--shadow-3); overflow: hidden; }
.olive-panel::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(420px 300px at 100% 0%, color-mix(in srgb, var(--leaf) 14%, transparent), transparent 70%);
}
.olive-panel-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr 1fr; gap: var(--sp-10); align-items: start; }
@media (max-width: 900px) { .olive-panel-grid { grid-template-columns: 1fr; } .olive-panel { padding: var(--sp-6); } }
.feature-list { display: grid; gap: var(--sp-4); }
.feature-list li { display: flex; gap: var(--sp-3); align-items: flex-start; }
.feature-list .tick { flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--leaf-tint); color: var(--leaf); display: flex; align-items: center; justify-content: center; margin-top: 2px; }
.feature-list .tick svg { width: 12px; height: 12px; }
.feature-list strong { color: var(--ink); display: block; font-size: var(--fs-base); margin-bottom: 2px; }
.feature-list span { color: var(--text-muted); font-size: var(--fs-sm); }
.olive-aside { background: var(--bg-inset); border: 1px solid var(--line); border-radius: var(--r-lg); padding: var(--sp-6); }
.olive-aside h4 { font-size: var(--fs-base); margin-bottom: var(--sp-2); }
.olive-aside p { font-size: var(--fs-sm); color: var(--text-muted); margin-bottom: var(--sp-5); }

/* ---------- 10. STEPS ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-5); counter-reset: step; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; padding-top: var(--sp-8); }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; top: 0; left: 0; font: 700 var(--fs-2xl)/1 var(--font-display); background: linear-gradient(90deg, var(--brand), var(--leaf)); -webkit-background-clip: text; background-clip: text; color: transparent; letter-spacing: -0.02em; }
.step h3 { font-size: var(--fs-base); margin-bottom: var(--sp-1); }
.step p { font-size: var(--fs-sm); color: var(--text-muted); margin-bottom: 0; }

/* ---------- 11. ABOUT ---------- */
.about-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-10); align-items: center; }
@media (max-width: 820px) { .about-row { grid-template-columns: 1fr; } }
.about-mark { width: 84px; height: 84px; border-radius: var(--r-lg); background: var(--leaf-tint); display: flex; align-items: center; justify-content: center; margin-bottom: var(--sp-6); }
.about-mark svg { width: 42px; height: 42px; }

/* ---------- 12. CONTACT ---------- */
.contact-card { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--sp-6); background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--r-xl); padding: var(--sp-10); }
.contact-email { display: inline-flex; align-items: center; gap: var(--sp-2); font: 700 var(--fs-xl)/1.2 var(--font-display); background: var(--brand-strong); color: var(--on-brand); word-break: break-word; padding: var(--sp-4) var(--sp-6); border-radius: var(--r-md); transition: background var(--dur-1) var(--ease); }
.contact-email:hover { background: var(--brand-hover); text-decoration: none; }
.contact-email:focus-visible { box-shadow: var(--focus-ring); }
@media (max-width: 640px) { .contact-card { padding: var(--sp-6); } .contact-email { font-size: var(--fs-md); padding: var(--sp-3) var(--sp-5); } }

/* ---------- 13. FOOTER ---------- */
.site-footer { border-top: 1px solid var(--line); padding: var(--sp-8) 0; color: var(--text-muted); font-size: var(--fs-sm); }
.footer-inner { display: flex; flex-wrap: wrap; gap: var(--sp-4) var(--sp-8); align-items: center; justify-content: space-between; }
.footer-links { display: flex; gap: var(--sp-5); }
.footer-links a { color: var(--text-muted); }
.footer-links a:hover { color: var(--brand); }

/* ---------- 14. REVEAL ON SCROLL ----------
   Progressive enhancement: content is fully visible by default. The
   opacity/transform "hidden" state is scoped to .js-reveal-ready, a class
   only JS adds once it has confirmed IntersectionObserver is available and
   is ready to reveal elements. That way if JS fails to load, errors, or is
   blocked, every section stays visible — this is a marketing page, so
   nothing should depend on script execution to be readable. */
.js-reveal-ready .reveal { opacity: 0; transform: translateY(16px); transition: opacity var(--dur-4) var(--ease), transform var(--dur-4) var(--ease); }
.js-reveal-ready .reveal.in-view { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js-reveal-ready .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 15. PRIVACY PAGE ---------- */
.legal { padding: var(--sp-16) 0 var(--sp-20); max-width: 42rem; }
.legal h1 { margin-bottom: var(--sp-2); }
.legal .updated { color: var(--text-faint); font-size: var(--fs-sm); margin-bottom: var(--sp-8); }
.legal h2 { font-size: var(--fs-lg); margin-top: var(--sp-8); }
.legal p, .legal li { color: var(--text); }
.legal ul { margin: 0 0 var(--sp-4); padding-left: var(--sp-5); list-style: disc; }
.legal ul li { margin-bottom: var(--sp-2); }