/* ====================================================================
   TCGBrain Landing Page — design system
   Tokens lifted from the shipped app's single source of truth:
     C:\dev\tcgbrain\src\config\theme.ts (BRAND_TOKENS + colors)
   plus values sampled from the approved store creative
   (Play Feature Graphic / App Store screenshots).

   No gold anywhere: the app's own theme has none (verified — theme.ts
   contains no warm token), so the page uses only app hues. Sky blue
   carries actions and structure; the app's success green (#1fb356 —
   the same green the in-app pricing chart uses for movement) carries
   market/value signals.

   Contrast note: the app's primary sky blue (#4abfee) scores 2.1:1 on
   white and the success green 2.75:1, so both are used for GRAPHICS
   ONLY (fills, glows, brackets, chart strokes). Their TEXT twins are
   --brand-800 (#0a6b8f, 5.9:1) and --success-dark (#12833c, 4.84:1) —
   same hues, legible.
   ==================================================================== */

:root {
  /* ===== Brand (app theme.ts) ===== */
  --brand-50:  #f0f9fe;
  --brand-100: #e4f2fa;   /* colorPrimaryTint  */
  --brand-200: #cdf0ff;   /* colors.primaryMuted */
  --brand-300: #87ceeb;   /* colorPrimaryLight */
  --brand-500: #4abfee;   /* colorPrimary — graphics only */
  --brand-600: #38baef;   /* colorSecondary */
  --brand-800: #0a6b8f;   /* derived: legible blue for text */
  --navy-900:  #004661;   /* colors.info */

  /* ===== CTA depth (derived from the app's primary hue + colorInfo) ===== */
  --cta-from: #0a6b8f;    /* = --brand-800, 5.9:1 behind white */
  --cta-to:   #004661;    /* = colorInfo,  10.3:1 behind white */
  --cta-from-hover: #0d7ba4;  /* 4.79:1 — the lightest hover that still clears AA */
  --cta-to-hover:   #005775;

  /* ===== Ink (app gray ramp) ===== */
  --ink-900: #101828;
  --ink-700: #344054;
  --ink-600: #475467;
  --ink-500: #667085;
  --ink-300: #d0d5dd;
  --ink-200: #e4e7ec;
  --ink-100: #f2f4f7;

  /* ===== Status ===== */
  --success: #1fb356;
  --success-dark: #12833c;
  --error: #d92d20;
  --warning: #ff9500;

  /* ===== Surfaces ===== */
  --white: #ffffff;
  --canvas: #ffffff;
  --wash: #f2faf9;        /* sampled from the store creative background */
  --surface: #ffffff;
  --surface-2: #f7fbfd;

  /* ===== Semantic ===== */
  --text: var(--ink-900);
  --text-body: var(--ink-600);
  --text-mute: var(--ink-500);

  --border: #e7edf2;
  --border-strong: #d6e3ec;
  --border-brand: rgba(74, 191, 238, 0.34);

  /* ===== Elevation — soft, layered, never a single flat blur ===== */
  --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 6px 16px -6px rgba(16, 24, 40, 0.08);
  --shadow-md: 0 2px 4px rgba(16, 24, 40, 0.04), 0 14px 34px -12px rgba(16, 24, 40, 0.16);
  --shadow-lg: 0 4px 8px rgba(16, 24, 40, 0.04), 0 30px 60px -22px rgba(16, 24, 40, 0.26);
  --shadow-brand: 0 14px 34px -12px rgba(56, 186, 239, 0.45);
  --shadow-cta: 0 14px 30px -10px rgba(10, 107, 143, 0.45), 0 0 0 4px rgba(74, 191, 238, 0.14);

  /* ===== Radii (app borderRadius) ===== */
  --radius-btn: 12px;
  --radius-sm: 12px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 999px;

  /* ===== Layout ===== */
  --section: clamp(76px, 9vw, 124px);
  --container: 1200px;

  /* ===== Motion ===== */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--canvas);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* Atmosphere — the same soft mint/blue wash the store creative sits on.
   Fixed so long scrolls keep the light source consistent. */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(900px 640px at 82% -8%, rgba(74, 191, 238, 0.20), transparent 62%),
    radial-gradient(760px 560px at -6% 22%, rgba(56, 186, 239, 0.10), transparent 60%),
    radial-gradient(820px 620px at 50% 108%, rgba(31, 179, 86, 0.06), transparent 62%),
    var(--wash);
  z-index: 0;
  pointer-events: none;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.25s var(--ease-out); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }

::selection { background: var(--brand-200); color: var(--navy-900); }

/* Visible keyboard focus — never remove without an equivalent replacement */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--brand-800);
  outline-offset: 2px;
  border-radius: 4px;
}
.btn:focus-visible, .store-btn:focus-visible, .nav-cta:focus-visible { outline-offset: 3px; }

/* Anchor targets clear the fixed navbar when arrived at from another page
   (in-page links get the same offset from script.js). */
section[id], header[id] { scroll-margin-top: 92px; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

/* Screen-reader-only helper for labels that must exist but not show */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Typography ===== */
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.025em; line-height: 1.14; color: var(--text); }
.display {
  font-size: clamp(2.4rem, 5.2vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.04;
}
.accent { color: var(--brand-800); }
/* Value/market accent — the app's success green, darkened for text legibility */
.accent-alt { color: var(--success-dark); }

/* Eyebrow — carries the app icon's scan-bracket motif */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-800);
  padding: 8px 15px 8px 12px;
  border: 1px solid var(--border-brand);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-xs);
  backdrop-filter: blur(10px);
}
.eyebrow svg { width: 15px; height: 15px; flex-shrink: 0; }
.eyebrow.alt {
  color: var(--success-dark);
  border-color: rgba(31, 179, 86, 0.3);
  background: rgba(255, 255, 255, 0.9);
}

.section-intro {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-intro .eyebrow { margin-bottom: 20px; }
.section-intro h2 {
  font-size: clamp(1.95rem, 3.8vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 16px;
}
.section-intro p { font-size: 1.06rem; color: var(--text-body); }

/* Section rule — a hairline that fades out, used instead of hard dividers */
.hairline {
  height: 1px;
  border: 0;
  background: linear-gradient(to right, transparent, var(--border-strong) 18%, var(--border-strong) 82%, transparent);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.97rem;
  padding: 15px 28px;
  border-radius: var(--radius-btn);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out),
              background-color 0.25s var(--ease-out), border-color 0.25s var(--ease-out),
              color 0.25s var(--ease-out);
  white-space: nowrap;
  border: 1px solid transparent;
  font-family: inherit;
  line-height: 1.2;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

/* Primary — the app's own blue, at the depth a near-white page needs. The
   gradient runs --brand-800 into colorInfo; the halo is the app's sky blue
   #4abfee, so the button reads as the app icon rather than as generic navy.
   Both gradient stops clear 4.5:1 behind white label text. */
.btn-primary {
  background: linear-gradient(160deg, var(--cta-from) 0%, var(--cta-to) 100%);
  color: var(--white);
  border-color: var(--cta-to);
  box-shadow: var(--shadow-cta), inset 0 1px 0 rgba(255, 255, 255, 0.18);
}
.btn-primary:hover {
  background: linear-gradient(160deg, var(--cta-from-hover) 0%, var(--cta-to-hover) 100%);
  transform: translateY(-2px);
  box-shadow: 0 18px 38px -12px rgba(10, 107, 143, 0.5), 0 0 0 5px rgba(74, 191, 238, 0.2),
              inset 0 1px 0 rgba(255, 255, 255, 0.24);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.9);
  color: var(--navy-900);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-xs);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: var(--brand-500);
  color: var(--brand-800);
  background: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.btn-ghost:active { transform: translateY(0); }

/* ===== Store buttons ===== */
.store-buttons { display: flex; flex-wrap: wrap; gap: 14px; }
.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  padding: 12px 22px;
  background: var(--navy-900);
  border: 1px solid var(--navy-900);
  border-radius: var(--radius-btn);
  color: var(--white);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), background-color 0.25s var(--ease-out);
  box-shadow: 0 10px 26px -12px rgba(0, 70, 97, 0.6);
}
.store-btn:hover { background: #0a6183; transform: translateY(-2px); box-shadow: 0 16px 32px -12px rgba(0, 70, 97, 0.65); }
.store-btn svg { width: 26px; height: 26px; flex-shrink: 0; }
.store-btn-text { display: flex; flex-direction: column; line-height: 1.15; text-align: left; }
.store-btn-text small { font-size: 0.66rem; letter-spacing: 0.04em; opacity: 0.85; }
.store-btn-text strong { font-size: 1rem; font-weight: 700; letter-spacing: -0.01em; }

/* Not-yet-live store: rendered as a real disabled control, never a dead link */
.store-btn.is-pending {
  background: var(--white);
  color: var(--ink-500);
  border: 1px dashed var(--border-strong);
  box-shadow: none;
  cursor: default;
}
.store-btn.is-pending:hover { transform: none; background: var(--white); box-shadow: none; }
.store-btn.is-pending svg { opacity: 0.55; }
.store-btn.is-pending .store-btn-text strong { color: var(--ink-600); }
.store-pending-tag {
  margin-left: 4px;
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand-800);
  background: var(--brand-50);
  border: 1px solid var(--border-brand);
  border-radius: var(--radius-full);
  padding: 4px 8px;
  align-self: center;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 14px 0;
  transition: background-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  /* High opacity on purpose: this is a light page, so a thinner veil lets
     body text read straight through the bar. */
  background: rgba(255, 255, 255, 0.93);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--border);
  box-shadow: 0 6px 24px -18px rgba(16, 24, 40, 0.5);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.14rem;
  letter-spacing: -0.03em;
  color: var(--navy-900);
}
.nav-logo img {
  width: 40px; height: 40px;
  border-radius: 11px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  background: var(--white);
}
.nav-logo span span { color: var(--brand-800); }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a { font-size: 0.92rem; font-weight: 600; color: var(--ink-600); }
.nav-links a:hover { color: var(--brand-800); }
.nav-cta { padding: 11px 20px; font-size: 0.88rem; }
/* The link rule above out-specifies .btn-primary, which would leave the CTA
   with dark ink on its fill. Restate the colour at matching specificity. */
.nav-links a.btn-primary,
.nav-links a.btn-primary:hover { color: var(--white); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--navy-900);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

/* ===== Scan-bracket motif =====
   The app icon frames cards in four corner brackets. Reused here as the
   page's signature device: around the hero phone and on section art. */
.brackets { position: absolute; inset: 0; pointer-events: none; }
.brackets span {
  position: absolute;
  width: 42px; height: 42px;
  border: 3px solid var(--brand-500);
  border-radius: 4px;
}
.brackets span:nth-child(1) { top: 0; left: 0; border-right: 0; border-bottom: 0; border-top-left-radius: 14px; }
.brackets span:nth-child(2) { top: 0; right: 0; border-left: 0; border-bottom: 0; border-top-right-radius: 14px; }
.brackets span:nth-child(3) { bottom: 0; left: 0; border-right: 0; border-top: 0; border-bottom-left-radius: 14px; }
.brackets span:nth-child(4) { bottom: 0; right: 0; border-left: 0; border-top: 0; border-bottom-right-radius: 14px; }

/* ===== Phone frame — real app screens, our own bezel ===== */
.phone-frame {
  position: relative;
  border-radius: 40px;
  padding: 7px;
  background: linear-gradient(160deg, #f4f7fa 0%, #d9e2ea 46%, #aebcc8 100%);
  box-shadow:
    0 2px 4px rgba(16, 24, 40, 0.06),
    0 34px 64px -26px rgba(0, 70, 97, 0.45),
    0 0 0 1px rgba(16, 24, 40, 0.05);
}
.phone-frame img {
  width: 100%;
  border-radius: 34px;
  display: block;
  background: var(--white);
}

/* ===== Footer ===== */
.footer {
  padding: 74px 0 30px;
  background: var(--white);
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 56px;
  margin-bottom: 44px;
}
.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-brand p {
  color: var(--text-mute);
  font-size: 0.9rem;
  line-height: 1.65;
  max-width: 380px;
}
.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--navy-900);
  margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a { font-size: 0.92rem; color: var(--text-mute); }
.footer-col a:hover { color: var(--brand-800); }
.footer-legal {
  font-size: 0.78rem;
  color: var(--ink-500);
  line-height: 1.6;
  padding-top: 26px;
  border-top: 1px solid var(--border);
  max-width: 900px;
}
.footer-bottom {
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  color: var(--text-mute);
  font-size: 0.85rem;
}
.footer-bottom a { color: var(--brand-800); font-weight: 600; }
.footer-bottom a:hover { text-decoration: underline; }

/* ===== Reveal on scroll ===== */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.75s var(--ease-out), transform 0.75s var(--ease-out);
}
.reveal-stagger.in > * { opacity: 1; transform: translateY(0); }
.reveal-stagger.in > *:nth-child(1) { transition-delay: 0.04s; }
.reveal-stagger.in > *:nth-child(2) { transition-delay: 0.12s; }
.reveal-stagger.in > *:nth-child(3) { transition-delay: 0.20s; }
.reveal-stagger.in > *:nth-child(4) { transition-delay: 0.28s; }
.reveal-stagger.in > *:nth-child(5) { transition-delay: 0.36s; }
.reveal-stagger.in > *:nth-child(6) { transition-delay: 0.44s; }
.reveal-stagger.in > *:nth-child(7) { transition-delay: 0.52s; }
.reveal-stagger.in > *:nth-child(8) { transition-delay: 0.60s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .reveal, .reveal-stagger > * { opacity: 1; transform: none; }
}

/* ===== Legal / long-form pages ===== */
.legal { padding: 132px 0 80px; max-width: 800px; margin: 0 auto; }
.legal h1 {
  font-size: clamp(2rem, 4vw, 2.7rem);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.03em;
}
.legal .legal-meta {
  color: var(--text-mute);
  font-size: 0.9rem;
  margin-bottom: 36px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}
.legal h2 { font-size: 1.32rem; font-weight: 700; margin: 36px 0 12px; }
.legal h3 { font-size: 1.05rem; font-weight: 700; margin: 24px 0 8px; color: var(--ink-700); }
.legal p, .legal li { color: var(--text-body); font-size: 1rem; line-height: 1.78; margin-bottom: 12px; }
.legal ul, .legal ol { margin: 0 0 16px 22px; }
.legal ul { list-style: disc; }
.legal ol { list-style: decimal; }
.legal a { color: var(--brand-800); font-weight: 600; }
.legal a:hover { text-decoration: underline; }
.legal strong { color: var(--ink-900); font-weight: 700; }
.legal hr { margin: 34px 0; }
.legal-note {
  background: var(--brand-50);
  border: 1px solid var(--border-brand);
  border-left: 4px solid var(--brand-500);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  margin: 26px 0;
}
.legal-note p:last-child { margin-bottom: 0; }

/* ===== Responsive base ===== */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 720px) {
  .container { padding: 0 20px; }
  .nav-links {
    display: none;
    position: fixed;
    top: 70px; left: 16px; right: 16px;
    flex-direction: column;
    align-items: stretch;
    padding: 22px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border-strong);
    box-shadow: var(--shadow-lg);
    gap: 16px;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
  .nav-cta { width: 100%; justify-content: center; padding: 13px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .legal { padding: 112px 0 64px; }
}

@media (max-width: 420px) {
  .container { padding: 0 16px; }
  .nav-logo { font-size: 1.04rem; gap: 8px; }
  .nav-logo img { width: 34px; height: 34px; border-radius: 9px; }
  .display { font-size: 2.15rem; }
  .section-intro { margin-bottom: 40px; }
  .section-intro h2 { font-size: 1.68rem; }
  .section-intro p { font-size: 0.98rem; }
  .btn { padding: 13px 22px; font-size: 0.92rem; }
}

@media (min-width: 1600px) { :root { --container: 1300px; } }
@media (min-width: 1920px) { :root { --container: 1400px; } body { font-size: 17px; } }