/* =========================================================================
   Kane Technology Group — Stylesheet
   ========================================================================= */

:root {
  /* Color */
  --color-bg: #fafaf8;
  --color-surface: #ffffff;
  --color-ink: #0a0a0a;
  --color-text: #1a1a1a;
  --color-muted: #5c5c5c;
  --color-soft: #999996;
  --color-border: #e8e8e4;
  --color-border-strong: #1a1a1a;

  /* Type */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Geist", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --font-mono: "Geist Mono", "SF Mono", ui-monospace, Menlo, monospace;

  /* Space */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* Layout */
  --max-width: 1080px;
  --content-width: 680px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-optical-sizing: auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

::selection {
  background: var(--color-ink);
  color: var(--color-bg);
}

a {
  color: inherit;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--narrow {
  max-width: var(--content-width);
}

/* =========================================================================
   Header
   ========================================================================= */
.site-header {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background: rgba(250, 250, 248, 0.85);
}

.site-header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.brand {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: -0.005em;
  color: var(--color-ink);
  text-decoration: none;
  font-variation-settings: "opsz" 14;
}

.brand-mark {
  display: inline-block;
  width: 22px;
  height: 22px;
  background: var(--color-ink);
  color: var(--color-bg);
  border-radius: 5px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.75rem;
  text-align: center;
  line-height: 22px;
  margin-right: 0.5rem;
  vertical-align: -4px;
  font-variation-settings: "opsz" 9;
}

.site-nav {
  display: flex;
  gap: 2rem;
  font-size: 0.9375rem;
}

.site-nav a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.site-nav a:hover {
  color: var(--color-ink);
}

/* =========================================================================
   Hero
   ========================================================================= */
.hero {
  padding: var(--space-4xl) 0 var(--space-3xl);
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-soft);
  margin-bottom: var(--space-lg);
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.5rem, 5vw + 1rem, 4.75rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--color-ink);
  margin-bottom: var(--space-lg);
  max-width: 16ch;
  font-variation-settings: "opsz" 144;
}

.hero h1 em {
  font-style: italic;
  font-weight: 400;
}

.hero p {
  font-size: 1.1875rem;
  line-height: 1.5;
  color: var(--color-muted);
  max-width: 52ch;
  font-weight: 400;
}

/* =========================================================================
   Sections
   ========================================================================= */
.section {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--color-border);
}

.section__header {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.section__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-soft);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.75rem, 2vw + 1rem, 2.25rem);
  letter-spacing: -0.02em;
  color: var(--color-ink);
  font-variation-settings: "opsz" 60;
}

/* =========================================================================
   Apps grid
   ========================================================================= */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.app-card {
  display: block;
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, transform 0.2s ease;
  position: relative;
}

.app-card:hover {
  border-color: var(--color-border-strong);
}

.app-card:hover .app-card__arrow {
  transform: translateX(4px);
}

.app-card__icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  color: white;
  font-size: 1.75rem;
  font-weight: 500;
  margin-bottom: var(--space-lg);
  font-variation-settings: "opsz" 60;
}

.app-card__icon--parlor {
  background: linear-gradient(135deg, #5b3a7a 0%, #1a0d2e 100%);
}

.app-card__icon--tabi {
  background: linear-gradient(135deg, #c0392b 0%, #6b1818 100%);
  font-size: 1.5rem;
}

.app-card__name {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--space-2xs);
  letter-spacing: -0.015em;
  font-variation-settings: "opsz" 30;
}

.app-card__tagline {
  font-size: 0.9375rem;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}

.app-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.app-card__arrow {
  display: inline-block;
  transition: transform 0.2s ease;
  font-family: var(--font-mono);
  color: var(--color-ink);
  font-size: 0.875rem;
}

/* =========================================================================
   Contact section
   ========================================================================= */
.contact-block {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-text);
  max-width: 50ch;
}

.contact-block a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-thickness 0.15s ease;
}

.contact-block a:hover {
  text-decoration-thickness: 2px;
}

/* =========================================================================
   Footer
   ========================================================================= */
.site-footer {
  margin-top: var(--space-2xl);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
}

.site-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.site-footer__copy {
  color: var(--color-muted);
  font-family: var(--font-mono);
}

.site-footer__links {
  display: flex;
  gap: 1.75rem;
}

.site-footer__links a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.site-footer__links a:hover {
  color: var(--color-ink);
}

/* =========================================================================
   App detail page
   ========================================================================= */
.app-detail {
  padding: var(--space-2xl) 0 var(--space-3xl);
}

.app-detail__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
  text-decoration: none;
  margin-bottom: var(--space-2xl);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color 0.15s ease;
}

.app-detail__back:hover {
  color: var(--color-ink);
}

.app-detail__header {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.app-detail__icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 500;
  font-variation-settings: "opsz" 96;
}

.app-detail__icon--parlor {
  background: linear-gradient(135deg, #5b3a7a 0%, #1a0d2e 100%);
}

.app-detail__icon--tabi {
  background: linear-gradient(135deg, #c0392b 0%, #6b1818 100%);
  font-size: 2.25rem;
}

.app-detail__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 4vw + 1rem, 3rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--color-ink);
  margin-bottom: var(--space-2xs);
  font-variation-settings: "opsz" 96;
}

.app-detail__tagline {
  font-size: 1.0625rem;
  color: var(--color-muted);
}

.app-detail__body {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  max-width: 60ch;
}

.app-detail__body p {
  margin-bottom: var(--space-md);
}

.app-detail__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: var(--space-lg);
  padding: 0.875rem 1.5rem;
  background: var(--color-ink);
  color: white;
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  font-family: var(--font-body);
  transition: background 0.2s ease, transform 0.2s ease;
  border-radius: 2px;
}

.app-detail__cta:hover {
  background: #2a2a2a;
}

.app-detail__cta:hover .arrow {
  transform: translateX(3px);
}

.app-detail__cta .arrow {
  display: inline-block;
  transition: transform 0.2s ease;
}

/* Features */
.features {
  margin-top: var(--space-2xl);
}

.features__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  color: var(--color-ink);
  font-variation-settings: "opsz" 30;
}

.features ul {
  list-style: none;
  padding: 0;
}

.features li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  display: flex;
  gap: var(--space-md);
  font-size: 0.9375rem;
}

.features li::before {
  content: "—";
  color: var(--color-soft);
  flex-shrink: 0;
  font-family: var(--font-mono);
}

/* App meta grid */
.app-detail__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.app-detail__meta-item {
  font-size: 0.875rem;
}

.app-detail__meta-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-soft);
  margin-bottom: 0.375rem;
}

.app-detail__meta-value {
  color: var(--color-text);
}

/* =========================================================================
   Legal pages
   ========================================================================= */
.legal {
  padding: var(--space-2xl) 0 var(--space-3xl);
}

.legal__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
  text-decoration: none;
  margin-bottom: var(--space-2xl);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color 0.15s ease;
}

.legal__back:hover {
  color: var(--color-ink);
}

.legal h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 4vw + 1rem, 3rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
  font-variation-settings: "opsz" 96;
}

.legal__updated {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-soft);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2xl);
}

.legal h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.375rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  color: var(--color-ink);
  letter-spacing: -0.015em;
  font-variation-settings: "opsz" 30;
}

.legal p, .legal li {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.legal ul, .legal ol {
  padding-left: 1.5rem;
  margin-bottom: var(--space-md);
}

.legal li {
  margin-bottom: var(--space-xs);
}

.legal a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.legal strong {
  color: var(--color-ink);
  font-weight: 600;
}

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 640px) {
  .site-header {
    padding: 1.25rem 0;
  }

  .site-header__inner {
    flex-direction: row;
    gap: var(--space-md);
  }

  .site-nav {
    gap: 1.25rem;
  }

  .hero {
    padding: var(--space-3xl) 0 var(--space-2xl);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .app-detail__header {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    gap: var(--space-md);
  }

  .app-detail__icon {
    width: 72px;
    height: 72px;
    font-size: 2rem;
  }

  .app-detail__icon--tabi {
    font-size: 1.75rem;
  }

  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .site-footer__links {
    gap: 1.25rem;
  }
}