/* ============================================================
   Authenible — global stylesheet
   Stripe-inspired: clean type, soft gradients, generous spacing.
   Supports light + dark theme via [data-theme] on <html>.
   ============================================================ */

:root {
  /* Light theme (default) */
  --color-bg: #ffffff;
  --color-bg-elev: #ffffff;
  --color-bg-alt: #f6f9fc;
  --color-ink: #0a2540;
  --color-ink-soft: #425466;
  --color-muted: #697386;
  --color-line: #e6ebf1;
  --color-accent: #635bff;
  --color-accent-2: #00d4ff;
  --color-accent-3: #ff7ab6;
  --color-gold: #f8aa08;
  --color-gold-soft: rgba(248, 170, 8, 0.16);
  --color-card: #ffffff;
  --color-footer-bg: #0a2540;
  --color-footer-ink: #b8c4d6;
  --color-footer-ink-strong: #ffffff;
  --color-footer-line: rgba(255, 255, 255, 0.08);
  --color-header-bg: rgba(255, 255, 255, 0.85);
  --color-mobile-nav-bg: #ffffff;

  --grad-hero: radial-gradient(1200px 600px at 20% -10%, #d9e8ff 0%, rgba(217, 232, 255, 0) 60%),
               radial-gradient(900px 500px at 90% 0%, #ffe0ec 0%, rgba(255, 224, 236, 0) 60%),
               linear-gradient(180deg, #f6f9fc 0%, #ffffff 100%);

  --shadow-sm: 0 2px 6px rgba(50, 50, 93, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 24px rgba(50, 50, 93, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 30px 60px rgba(50, 50, 93, 0.12), 0 18px 36px rgba(0, 0, 0, 0.06);

  --btn-primary-bg: #0a2540;
  --btn-primary-bg-hover: #112d4f;
  --btn-primary-ink: #ffffff;
  --btn-ghost-border: rgba(10, 37, 64, 0.12);
  --btn-ghost-bg-hover: rgba(10, 37, 64, 0.04);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  --max-w: 1120px;

  color-scheme: light;
}

[data-theme="dark"] {
  --color-bg: #0a1628;
  --color-bg-elev: #0f1e36;
  --color-bg-alt: #0c1a30;
  --color-ink: #f1f5fb;
  --color-ink-soft: #b9c5d6;
  --color-muted: #8898b1;
  --color-line: rgba(255, 255, 255, 0.08);
  --color-card: #11223e;
  --color-gold-soft: rgba(248, 170, 8, 0.22);
  --color-footer-bg: #060f1d;
  --color-footer-ink: #8898b1;
  --color-footer-ink-strong: #ffffff;
  --color-footer-line: rgba(255, 255, 255, 0.06);
  --color-header-bg: rgba(10, 22, 40, 0.78);
  --color-mobile-nav-bg: #0a1628;

  --grad-hero: radial-gradient(1200px 600px at 20% -10%, rgba(99, 91, 255, 0.28) 0%, rgba(99, 91, 255, 0) 60%),
               radial-gradient(900px 500px at 90% 0%, rgba(255, 122, 182, 0.18) 0%, rgba(255, 122, 182, 0) 60%),
               linear-gradient(180deg, #0a1628 0%, #0a1628 100%);

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 24px rgba(0, 0, 0, 0.45), 0 4px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 30px 60px rgba(0, 0, 0, 0.55), 0 18px 36px rgba(0, 0, 0, 0.35);

  --btn-primary-bg: #ffffff;
  --btn-primary-bg-hover: #e8edf5;
  --btn-primary-ink: #0a2540;
  --btn-ghost-border: rgba(255, 255, 255, 0.18);
  --btn-ghost-bg-hover: rgba(255, 255, 255, 0.06);

  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.25s ease, color 0.25s ease;
}

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

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  margin: 0 0 var(--space-4);
  font-family: 'Ubuntu', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--color-ink);
}

h1 { font-size: clamp(2.5rem, 5.5vw, 4.25rem); font-weight: 700; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.9rem, 3.5vw, 2.75rem); }
h3 { font-size: 1.5rem; }

p { margin: 0 0 var(--space-4); color: var(--color-ink-soft); }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-gold);
  margin: 0 0 var(--space-4);
}
.eyebrow::before {
  content: '';
  width: 18px;
  height: 2px;
  background: var(--color-gold);
  border-radius: 2px;
  flex-shrink: 0;
}

.grad-text {
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-accent-3) 55%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== Buttons ===== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-ink);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.btn-primary:hover {
  background: var(--btn-primary-bg-hover);
  box-shadow: 0 12px 28px rgba(248, 170, 8, 0.25), var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--btn-ghost-border);
}
.btn-ghost:hover { background: var(--btn-ghost-bg-hover); }

.btn-sm { padding: 0.55rem 1rem; font-size: 0.9rem; }
.btn-lg { padding: 1.05rem 1.75rem; font-size: 1.05rem; }

/* ===== Header / Nav ===== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-header-bg);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--color-line);
  transition: background 0.25s ease, border-color 0.25s ease;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  color: var(--color-ink);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }

.brand-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
  display: block;
}

/* Logo swap based on theme */
.brand-logo--dark { display: none; }
[data-theme="dark"] .brand-logo--light { display: none; }
[data-theme="dark"] .brand-logo--dark { display: block; }

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.nav-links a {
  color: var(--color-ink-soft);
  font-weight: 500;
  font-size: 0.96rem;
}
.nav-links a.btn { color: var(--btn-primary-ink); }
.nav-links a:hover { color: var(--color-ink); text-decoration: none; }

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  margin: 4px 0;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ===== Theme toggle ===== */

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--btn-ghost-border);
  color: var(--color-ink);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}
.theme-toggle:hover { background: var(--btn-ghost-bg-hover); }
.theme-toggle:active { transform: scale(0.94); }

.theme-toggle svg {
  width: 18px;
  height: 18px;
  display: block;
}

.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* ===== Hero ===== */

.hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-9) 0 var(--space-8);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
  z-index: -1;
}

.hero-inner {
  text-align: left;
  max-width: 820px;
}

.lede {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--color-ink-soft);
  max-width: 620px;
  margin-top: var(--space-5);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* ===== Sections ===== */

.section {
  padding: var(--space-9) 0;
  border-top: 1px solid var(--color-line);
}

.section-header {
  max-width: 720px;
  margin-bottom: var(--space-7);
}

.section-sub {
  font-size: 1.1rem;
  color: var(--color-muted);
  margin-top: var(--space-3);
}

/* ===== Apps grid ===== */

.apps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.app-card {
  position: relative;
  border-radius: var(--radius-lg);
  background: var(--color-card);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}
.app-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.app-card-glow {
  position: absolute;
  inset: -40% -10% auto auto;
  width: 70%;
  height: 70%;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  z-index: 0;
}

.app-card--bowlersai .app-card-glow {
  background: radial-gradient(closest-side, #f8aa08 0%, rgba(248, 170, 8, 0) 70%);
}
.app-card--iwoosah .app-card-glow {
  background: radial-gradient(closest-side, #00d4ff 0%, rgba(0, 212, 255, 0) 70%);
}

[data-theme="dark"] .app-card--bowlersai .app-card-glow { opacity: 0.35; }
[data-theme="dark"] .app-card--iwoosah .app-card-glow { opacity: 0.3; }

.app-card-body {
  position: relative;
  z-index: 1;
  padding: var(--space-7) var(--space-6);
}

.app-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 var(--space-4);
}

.app-card h3 {
  font-size: 1.85rem;
  margin-bottom: var(--space-2);
}

.app-tagline {
  font-weight: 600;
  color: var(--color-ink);
  margin: 0 0 var(--space-4);
}

.app-desc {
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-5);
}

.app-link {
  display: inline-flex;
  align-items: center;
  font-weight: 600;
  color: var(--color-ink);
  border-bottom: 2px solid var(--color-gold);
  padding-bottom: 2px;
  transition: color 0.18s ease;
}
.app-link:hover {
  color: var(--color-gold);
  text-decoration: none;
}

/* Store buttons (App Store / Google Play) */
.store-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0 0 var(--space-5);
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 1rem;
  border-radius: 12px;
  background: var(--color-ink);
  color: #fff;
  text-decoration: none;
  border: 1px solid var(--color-ink);
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.store-btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(248, 170, 8, 0.22), var(--shadow-sm);
}

.store-btn svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.store-btn > span {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  text-align: left;
}

.store-btn-pre {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.78;
}

.store-btn-name {
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.store-btn--soon {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--btn-ghost-border);
  cursor: default;
}
.store-btn--soon:hover {
  transform: none;
  box-shadow: none;
}
.store-btn--soon .store-btn-pre {
  color: var(--color-muted);
  opacity: 1;
}

[data-theme="dark"] .store-btn {
  background: #ffffff;
  color: #0a2540;
  border-color: #ffffff;
}
[data-theme="dark"] .store-btn--soon {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--btn-ghost-border);
}

.app-link--soon {
  color: var(--color-muted);
  font-style: italic;
}

/* ===== Contact ===== */

.section-contact {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.contact-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.contact-inner .btn {
  margin-top: var(--space-5);
}

/* ===== Footer ===== */

.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-ink);
  padding: var(--space-7) 0;
  transition: background 0.25s ease;
}

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

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-footer-ink-strong);
  font-weight: 600;
  position: relative;
  padding-left: 0;
}
.footer-brand::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 12px rgba(248, 170, 8, 0.6);
}

.footer-brand .brand-logo--light { display: none; }
.footer-brand .brand-logo--dark { display: block; }

.footer-links {
  display: flex;
  gap: var(--space-5);
}
.footer-links a {
  color: var(--color-footer-ink);
  font-size: 0.95rem;
}
.footer-links a:hover { color: var(--color-footer-ink-strong); }

.footer-copy {
  margin: 0;
  font-size: 0.88rem;
  color: var(--color-muted);
  width: 100%;
  border-top: 1px solid var(--color-footer-line);
  padding-top: var(--space-4);
  margin-top: var(--space-3);
}

/* ===== Legal pages ===== */

.legal {
  padding: var(--space-9) 0 var(--space-8);
}
.legal-inner {
  max-width: 760px;
  margin: 0 auto;
}
.legal h1 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: var(--space-2); }
.legal .updated { color: var(--color-muted); font-size: 0.95rem; margin-bottom: var(--space-7); }
.legal h2 { font-size: 1.4rem; margin-top: var(--space-7); }
.legal p, .legal li { color: var(--color-ink-soft); }
.legal ul { padding-left: 1.25rem; }
.legal a { color: var(--color-accent); }

/* ===== Responsive ===== */

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-mobile-nav-bg);
    border-bottom: 1px solid var(--color-line);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-3) var(--space-5) var(--space-5);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
  }
  .nav-links a {
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-line);
  }
  .nav-links a.btn {
    border: 0;
    margin-top: var(--space-3);
    align-self: flex-start;
  }
  .nav-links.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .apps-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero { padding: var(--space-8) 0 var(--space-7); }
  .section { padding: var(--space-8) 0; }
  .app-card-body { padding: var(--space-6) var(--space-5); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}
