/* =================================================================
   LocalCortex — product site
   Hand-written CSS, no build step. Mobile-first, dark-mode aware.
   Brand palette sourced from the app icon + in-app DesignTokens.
   ================================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* Brand gradient (from assets/icon.svg) */
  --brand-1: #6366F1;   /* indigo  */
  --brand-2: #7C3AED;   /* violet  */
  --brand-3: #4C1D95;   /* deep purple */
  --brand-grad: linear-gradient(135deg, var(--brand-1) 0%, var(--brand-2) 55%, var(--brand-3) 100%);
  --brand-soft: linear-gradient(135deg, rgba(99,102,241,.12), rgba(124,58,237,.12));

  /* In-app accent (DesignTokens.swift accentBlue) */
  --accent: #5B86D9;
  --accent-strong: #4a72c4;

  /* Light theme surfaces */
  --bg:            #ffffff;
  --bg-alt:        #f6f7fb;   /* alternating feature band */
  --bg-elevated:   #ffffff;
  --bg-tinted:     #f2f3f8;
  --border:        #e7e8ee;
  --border-strong: #d7d9e2;

  /* Text */
  --text:        #2c3138;
  --text-soft:   #44474b;
  --text-muted:  #6b7280;
  --text-faint:  #9aa0ab;

  /* Shot placeholders */
  --shot-bg:      linear-gradient(160deg, #fbfbfe, #eef0f7);
  --shot-border:  #dcdde5;
  --shot-text:    #8a8f9c;

  /* Radii + shadows */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 30px;
  --shadow-sm: 0 2px 8px rgba(20, 20, 50, .05);
  --shadow-md: 0 10px 34px rgba(20, 20, 60, .09);
  --shadow-lg: 0 24px 60px rgba(20, 20, 60, .14);

  /* Layout */
  --maxw: 1120px;
  --nav-h: 64px;

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
          "Segoe UI", Roboto, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:            #0e0e12;
    --bg-alt:        #131319;
    --bg-elevated:   #1c1c22;
    --bg-tinted:     #202028;
    --border:        #2a2a33;
    --border-strong: #38384380;

    --text:        #f3f4f8;
    --text-soft:   #d6d8e0;
    --text-muted:  #9aa0ad;
    --text-faint:  #6b7180;

    --shot-bg:      linear-gradient(160deg, #1e1e26, #16161c);
    --shot-border:  #2e2e38;
    --shot-text:    #6b7180;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);
    --shadow-md: 0 10px 34px rgba(0, 0, 0, .42);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, .55);
  }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
code, kbd, pre { font-family: var(--mono); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 1000;
  background: var(--brand-1); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 600; font-size: .95rem;
  border-radius: var(--r-md);
  padding: 11px 20px;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, opacity .2s ease;
  white-space: nowrap;
}
.btn--sm  { padding: 8px 16px; font-size: .875rem; }
.btn--lg  { padding: 15px 28px; font-size: 1.05rem; }

.btn--primary {
  background: var(--brand-grad);
  color: #fff;
  box-shadow: 0 6px 20px rgba(99, 102, 241, .32);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(99, 102, 241, .42); }
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn--ghost:hover { background: var(--bg-tinted); border-color: var(--accent); }

.btn--store {
  flex-direction: column; align-items: flex-start; gap: 0;
  background: #000; color: #fff;
  padding: 10px 18px; border-radius: var(--r-md);
  min-width: 150px;
}
.btn--store:hover { opacity: .85; }
.btn__store-top { font-size: .7rem; line-height: 1; }
.btn__store-bottom { font-size: 1.05rem; font-weight: 600; line-height: 1.2; }

/* =================================================================
   NAV
   ================================================================= */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.nav.is-scrolled { border-bottom-color: var(--border); }
@media (prefers-color-scheme: dark) {
  .nav { background: rgba(14,14,18,.72); }
}

.nav__inner {
  max-width: var(--maxw); margin: 0 auto;
  height: var(--nav-h); padding: 0 24px;
  display: flex; align-items: center; gap: 20px;
}
.nav__brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; letter-spacing: -.01em; }
.nav__logo { border-radius: 7px; box-shadow: var(--shadow-sm); }

.nav__links { display: flex; gap: 26px; margin-left: auto; }
.nav__links a {
  color: var(--text-soft); font-weight: 500; font-size: .95rem;
  position: relative; padding: 6px 0;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--brand-grad); transition: width .2s ease;
}
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after { width: 100%; }

.nav__cta { margin-left: auto; }
.nav__toggle { display: none; }

.nav__mobile {
  display: none;
  flex-direction: column; gap: 8px;
  padding: 0 24px 18px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.nav__mobile a { padding: 12px 4px; color: var(--text-soft); font-weight: 500; }
.nav__mobile .btn { margin-top: 8px; }

/* =================================================================
   HERO
   ================================================================= */
.hero {
  padding: calc(var(--nav-h) + 56px) 24px 80px;
  position: relative; overflow: hidden;
}
.hero::before {
  /* Soft brand glow behind hero */
  content: ""; position: absolute; inset: -20% -10% auto -10%; height: 540px;
  background: radial-gradient(60% 50% at 50% 0%, rgba(124,58,237,.18), rgba(99,102,241,.10) 40%, transparent 70%);
  pointer-events: none; z-index: 0;
}
.hero__inner {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center;
  position: relative; z-index: 1;
}
.hero__icon {
  width: 84px; height: 84px; border-radius: 20px;
  box-shadow: var(--shadow-md); margin-bottom: 28px;
}
.hero__title {
  font-size: clamp(2.4rem, 5.2vw, 3.7rem);
  line-height: 1.04; letter-spacing: -.035em; font-weight: 800;
  margin-bottom: 22px;
}
.hero__sub {
  font-size: 1.16rem; color: var(--text-soft); max-width: 540px; margin-bottom: 32px;
}
.hero__sub strong { color: var(--text); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 22px; }
.hero__meta { color: var(--text-muted); font-size: .9rem; }

/* =================================================================
   FEATURE SECTIONS (alternating)
   ================================================================= */
.feature {
  padding: 90px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.feature--alt { background: var(--bg-alt); }

.feature__inner {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
/* Alternate order: every other .feature puts the visual on the right by default;
   .feature--alt markup already has the visual first, so we flip text/visual via order. */
.feature--alt .feature__text  { order: 2; }
.feature--alt .feature__visual { order: 1; }

.eyebrow {
  text-transform: uppercase; letter-spacing: .12em; font-size: .76rem;
  font-weight: 700; color: var(--brand-2); margin-bottom: 14px;
}
.eyebrow--accent { color: var(--brand-1); }
@media (prefers-color-scheme: dark) { .eyebrow { color: #a78bfa; } .eyebrow--accent { color: #93a8f7; } }

.feature__title {
  font-size: clamp(1.7rem, 3.2vw, 2.35rem);
  line-height: 1.12; letter-spacing: -.025em; font-weight: 700;
  margin-bottom: 18px;
}
.feature__lede {
  font-size: 1.08rem; color: var(--text-soft); margin-bottom: 32px;
}
.feature__lede strong { color: var(--text); }

/* Inline links inside feature copy (lede, points) */
.feature__lede a,
.point a {
  color: var(--brand-1); font-weight: 600;
  text-decoration: underline; text-underline-offset: 3px;
}
.feature__lede a:hover,
.point a:hover { color: var(--brand-2); }
@media (prefers-color-scheme: dark) {
  .feature__lede a,
  .point a { color: #93a8f7; }
  .feature__lede a:hover,
  .point a:hover { color: #a5b4fc; }
}

.feature__points { display: flex; flex-direction: column; gap: 22px; }
.point h3 { font-size: 1.02rem; font-weight: 650; margin-bottom: 6px; }
.point p { color: var(--text-muted); font-size: .97rem; }

/* ---------- Tool grid (agent surface) ---------- */
.tool-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px;
  margin: 8px 0 32px;
}
.tool-grid li {
  display: flex; flex-direction: column; gap: 2px;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 10px 14px;
}
.tool-grid code { font-size: .88rem; color: var(--brand-2); font-weight: 600; }
@media (prefers-color-scheme: dark) { .tool-grid code { color: #c4b5fd; } }
.tool-grid span { font-size: .8rem; color: var(--text-muted); }

/* =================================================================
   SHOTS — screenshot slots (placeholder until the PNG is dropped in)
   ================================================================= */
.shot {
  border-radius: var(--r-lg);
  overflow: hidden;
}
.shot__placeholder {
  background: var(--shot-bg);
  border: 1px solid var(--shot-border);
  border-radius: var(--r-lg);
  min-height: 280px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  color: var(--shot-text);
  text-align: center;
}
.shot__label { font-weight: 700; font-size: 1.05rem; color: var(--text-soft); }
.shot__hint { font-size: .82rem; }

/* Embedded screenshot: plain image, no device chrome */
.shot img {
  display: block;
  width: 100%; height: auto;
}

/* Hero collage placeholder */
.shot__placeholder--collage {
  min-height: 380px; aspect-ratio: 4 / 3;
}

/* Code panel */
.shot--code .shot__placeholder--code {
  text-align: left; align-items: stretch;
  min-height: 320px; padding: 26px 28px;
}
.shot--code pre { font-size: .9rem; line-height: 1.7; color: var(--text-soft); white-space: pre-wrap; word-break: break-word; }
.shot--code .c { color: var(--text-faint); }
.shot--code .s { color: var(--accent); }

/* Tabbed shot */
.shot--tabbed { background: transparent; }
.shot__tabs {
  display: inline-flex; gap: 4px;
  background: var(--bg-tinted); border: 1px solid var(--border);
  border-radius: 999px; padding: 4px;
  margin-bottom: 16px;
}
.shot__tab {
  padding: 7px 20px; border-radius: 999px;
  font-size: .88rem; font-weight: 600; color: var(--text-muted);
  transition: background .2s ease, color .2s ease;
}
.shot__tab.is-active { background: var(--bg-elevated); color: var(--text); box-shadow: var(--shadow-sm); }
.shot__panel:not(.is-active) { display: none; }

/* Feature audience tabs (For Human / For Agent) */
.feature-tabs-wrap {
  position: sticky; top: var(--nav-h); z-index: 90;
  padding: 12px 24px 38px;
}
.feature-tabs-wrap.is-stuck {
  background: var(--bg);
  box-shadow: 0 14px 28px -20px rgba(20, 20, 60, .35);
}
.feature-tabs {
  display: flex; justify-content: center; gap: 4px;
  background: var(--bg-tinted); border: 1px solid var(--border);
  border-radius: 999px; padding: 4px;
  width: max-content; margin: 0 auto;
  scroll-margin-top: calc(var(--nav-h) + 12px);
}
.feature-tab {
  padding: 10px 30px; border-radius: 999px;
  font-size: .95rem; font-weight: 600; color: var(--text-muted);
  transition: background .2s ease, color .2s ease;
}
.feature-tab.is-active { background: var(--bg-elevated); color: var(--text); box-shadow: var(--shadow-sm); }
.feature-panel[hidden] { display: none; }

/* =================================================================
   SECTION TITLES
   ================================================================= */
.section-title {
  text-align: center; font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 800; letter-spacing: -.025em; margin-bottom: 14px;
}
.section-lede { text-align: center; color: var(--text-muted); font-size: 1.08rem; margin-bottom: 56px; }

/* =================================================================
   DOWNLOAD
   ================================================================= */
.download {
  padding: 100px 24px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  position: relative; overflow: hidden;
}
.download::before {
  content: ""; position: absolute; inset: 0 auto 0 0; right: 0; height: 100%;
  background: radial-gradient(50% 60% at 50% 30%, rgba(124,58,237,.12), transparent 70%);
  pointer-events: none;
}
.download__inner { max-width: var(--maxw); margin: 0 auto; position: relative; }

.platforms {
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px;
}
.platform {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 36px 30px;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}
.platform:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.platform__icon {
  width: 64px; height: 64px; border-radius: 18px;
  display: grid; place-items: center;
  background: var(--brand-grad); color: #fff;
  box-shadow: 0 8px 22px rgba(99,102,241,.32);
  margin-bottom: 10px;
}
.platform__name { font-size: 1.3rem; font-weight: 700; }
.platform__req { color: var(--text-muted); font-size: .92rem; margin-bottom: 6px; }
.platform__note { color: var(--text-soft); font-size: .92rem; margin-bottom: 18px; min-height: 2.6em; }

/* =================================================================
   FOOTER
   ================================================================= */
.footer { background: var(--bg); border-top: 1px solid var(--border); padding: 60px 24px 30px; }
.footer__inner {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 36px; border-bottom: 1px solid var(--border);
}
.footer__brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; margin-bottom: 12px; }
.footer__logo { border-radius: 6px; }
.footer__col h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--text-faint); margin-bottom: 14px; }
.footer__col li { margin-bottom: 9px; }
.footer__col a { color: var(--text-soft); font-size: .95rem; transition: color .15s ease; }
.footer__col a:hover { color: var(--accent); }
.footer__bottom {
  max-width: var(--maxw); margin: 24px auto 0;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;
  color: var(--text-faint); font-size: .85rem;
}

/* =================================================================
   SCROLL REVEAL
   ================================================================= */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .btn, .platform { transition: none !important; }
}

/* =================================================================
   RESPONSIVE
   ================================================================= */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { order: -1; max-width: 560px; }
  .feature__inner { grid-template-columns: 1fr; gap: 40px; }
  .feature--alt .feature__text,
  .feature--alt .feature__visual { order: 0; }
  .platforms { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .platform__note { min-height: 0; }
}

@media (max-width: 720px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle {
    display: inline-flex; flex-direction: column; gap: 5px;
    margin-left: auto; padding: 8px; border-radius: 8px;
  }
  .nav__toggle-bar { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .25s ease, opacity .2s ease; }
  .nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) { opacity: 0; }
  .nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav__mobile[hidden] { display: none; }
  .nav__mobile { display: flex; }

  .hero { padding-top: calc(var(--nav-h) + 30px); }
  .hero__title { font-size: clamp(2rem, 8vw, 2.8rem); }
  .tool-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer__col--brand { grid-column: 1 / -1; }
  .feature, .download { padding: 64px 20px; }
}

/* =================================================================
   PRIVACY POLICY
   ================================================================= */
.legal-page {
  padding: 96px 24px 110px;
  background:
    radial-gradient(50% 30% at 50% 0%, rgba(124,58,237,.12), transparent 75%),
    var(--bg);
}

.legal-page__inner { max-width: 820px; margin: 0 auto; }

.legal-page__header { text-align: center; margin-bottom: 40px; }
.legal-page__title {
  font-size: clamp(2.35rem, 5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -.035em;
  font-weight: 800;
  margin-bottom: 14px;
}
.legal-page__effective { color: var(--text-muted); font-size: .95rem; }

.legal-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  padding: clamp(28px, 5vw, 58px);
}
.legal-card__intro {
  color: var(--text-soft);
  font-size: 1.08rem;
  margin-bottom: 24px;
}
.legal-card__summary {
  background: var(--brand-soft);
  border: 1px solid rgba(99,102,241,.2);
  border-radius: var(--r-md);
  padding: 18px 20px;
  color: var(--text-soft);
  margin-bottom: 42px;
}
.legal-card__summary strong { color: var(--text); }

.legal-section {
  padding-top: 32px;
  margin-top: 32px;
  border-top: 1px solid var(--border);
}
.legal-section h2 {
  font-size: 1.35rem;
  line-height: 1.2;
  letter-spacing: -.018em;
  margin-bottom: 14px;
}
.faq-item + .faq-item { margin-top: 24px; }
.faq-question {
  font-size: 1.05rem;
  line-height: 1.3;
  margin-bottom: 8px;
}
.legal-section p,
.legal-section li {
  color: var(--text-soft);
  font-size: 1rem;
}
.legal-section p { margin-bottom: 14px; }
.legal-section p:last-child { margin-bottom: 0; }
.legal-section ul { padding-left: 1.25rem; list-style: disc; }
.legal-section li { padding-left: 5px; margin-bottom: 10px; }
.legal-section li:last-child { margin-bottom: 0; }
.legal-section strong { color: var(--text); }
.legal-section a {
  color: var(--brand-1);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.legal-section a:hover { color: var(--brand-2); }

@media (prefers-color-scheme: dark) {
  .legal-section a { color: #93a8f7; }
  .legal-section a:hover { color: #a5b4fc; }
}

@media (max-width: 720px) {
  .legal-page { padding: 64px 20px 76px; }
  .legal-page__header { margin-bottom: 28px; }
  .legal-card { border-radius: var(--r-lg); padding: 26px 22px; }
  .legal-card__summary { margin-bottom: 30px; }
  .legal-section { padding-top: 26px; margin-top: 26px; }
}