/* BabyJAppStudio — shared minimal dark theme */

:root {
  --bg-base: #0a0c0f;
  --bg-top: #0e1117;
  --surface: #12151c;
  --surface-raised: #171b24;
  --surface-muted: #0e1118;
  --surface-subtle: #0c0f14;
  --text: rgba(255, 255, 255, 0.93);
  --text-secondary: rgba(255, 255, 255, 0.58);
  --text-tertiary: rgba(255, 255, 255, 0.4);
  --border: rgba(255, 255, 255, 0.045);
  --border-strong: rgba(255, 255, 255, 0.075);
  --border-hairline: rgba(255, 255, 255, 0.055);
  /* Single restrained accent — calm blue */
  --accent: #6b9eff;
  --accent-dim: rgba(107, 158, 255, 0.1);
  --accent-on-accent: #0a0d14;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.38);
  --shadow-md: 0 20px 56px rgba(0, 0, 0, 0.32);
  --shadow-inset-top: inset 0 1px 0 rgba(255, 255, 255, 0.045);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 22px;
  --radius-pill: 999px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial,
    "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  height: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Solid fallback so there is never a tonal gap beside the viewport-fixed body layer */
  background-color: var(--bg-base);
}

body {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  font-family: var(--font);
  color: var(--text);
  line-height: 1.55;
  /* Single continuous canvas: gradient is tied to the viewport, not document length */
  background-color: var(--bg-base);
  background-image: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-base) 100%),
    radial-gradient(ellipse 100% 80% at 50% -15%, rgba(107, 158, 255, 0.055), transparent 55%);
  background-attachment: fixed;
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.16s var(--ease), opacity 0.16s var(--ease), border-color 0.16s var(--ease),
    background-color 0.16s var(--ease), box-shadow 0.16s var(--ease), transform 0.16s var(--ease);
}

a:hover {
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

@media (max-width: 520px) {
  .container {
    padding: var(--space-4) var(--space-5);
  }
}

/* Header */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-2) 0 var(--space-8);
  border-bottom: 1px solid var(--border-hairline);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.25;
  transition: opacity 0.18s var(--ease);
}

.brand:hover {
  text-decoration: none;
  opacity: 0.92;
}

.brand > div > div:first-child {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--text);
}

.logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(155deg, #262f3d 0%, #181d26 100%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm), var(--shadow-inset-top);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text);
  flex-shrink: 0;
}

nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 4px 0;
  border-radius: 4px;
}

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

/* Home — hero */

main.hero {
  flex: 1;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-8);
  align-items: start;
  padding: var(--space-10) 0 var(--space-6);
}

@media (max-width: 860px) {
  main.hero {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    padding-top: var(--space-8);
  }
}

.hero-card {
  /* Slightly elevated surface only—stays close to page tone so no “second background” seam */
  background: linear-gradient(
    165deg,
    rgba(255, 255, 255, 0.045) 0%,
    rgba(255, 255, 255, 0.018) 100%
  );
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-8) var(--space-8);
  box-shadow: var(--shadow-md), var(--shadow-inset-top);
}

@media (max-width: 520px) {
  .hero-card {
    padding: var(--space-8) var(--space-6) var(--space-6);
  }
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 7px var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-hairline);
  background: rgba(255, 255, 255, 0.028);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.018em;
  margin-bottom: var(--space-6);
  width: fit-content;
  line-height: 1.45;
}

.hero-card h1 {
  margin: 0 0 var(--space-5);
  font-size: clamp(1.95rem, 4.2vw, 2.65rem);
  line-height: 1.08;
  letter-spacing: -0.038em;
  font-weight: 650;
  max-width: 18ch;
  text-wrap: balance;
}

.subtitle {
  margin: 0 0 var(--space-6);
  color: var(--text-secondary);
  font-size: 15.5px;
  line-height: 1.58;
  max-width: 44ch;
  font-weight: 400;
  letter-spacing: 0.005em;
}

.cta-row {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-1);
  margin-bottom: var(--space-1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 11px var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-hairline);
  background: rgba(255, 255, 255, 0.03);
  color: rgba(255, 255, 255, 0.62);
  font-weight: 520;
  font-size: 14px;
  letter-spacing: 0.012em;
  cursor: pointer;
  transition: background 0.16s var(--ease), color 0.16s var(--ease), border-color 0.16s var(--ease),
    box-shadow 0.16s var(--ease);
}

.btn:hover {
  background: rgba(255, 255, 255, 0.055);
  color: var(--text);
  border-color: var(--border-strong);
  text-decoration: none;
}

.btn.primary {
  border: 1px solid transparent;
  background: var(--accent);
  color: var(--accent-on-accent);
  font-weight: 600;
  letter-spacing: 0.01em;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.14) inset, 0 1px 2px rgba(0, 0, 0, 0.25);
}

.btn.primary:hover {
  filter: brightness(1.06);
  text-decoration: none;
}

.btn.primary:active {
  filter: brightness(0.98);
}

.btn.primary:focus-visible {
  outline-color: var(--accent);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-10);
}

@media (max-width: 860px) {
  .grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
    margin-top: var(--space-8);
  }
}

.feature {
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.028);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-5);
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease);
}

.feature:hover {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.feature h3 {
  margin: 0 0 var(--space-3);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.018em;
  color: var(--text);
  line-height: 1.32;
}

.feature p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.58;
  letter-spacing: 0.01em;
}

.side {
  display: grid;
  gap: var(--space-4);
  padding-top: var(--space-1);
}

.mini-card {
  border: 1px solid var(--border);
  background: var(--surface-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-5);
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease);
}

.mini-card:hover {
  border-color: var(--border-hairline);
  background: rgba(255, 255, 255, 0.02);
}

.mini-card h2 {
  margin: 0 0 var(--space-2);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: rgba(255, 255, 255, 0.52);
}

.mini-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  line-height: 1.58;
}

.mini-card p.small {
  margin-top: var(--space-3);
}

.mini-card a {
  color: rgba(255, 255, 255, 0.78);
  text-underline-offset: 3px;
}

.mini-card a:hover {
  color: var(--accent);
}

/* Apps section */

section.apps {
  margin-top: var(--space-12);
  padding-top: 0;
  background: transparent;
  /* Subtle separation from hero without a different section fill */
  border-top: 1px solid var(--border-hairline);
}

.apps h2 {
  margin: 0 0 var(--space-6);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.app-list {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-4);
}

.app-link {
  display: block;
  color: inherit;
  text-decoration: none;
  border-radius: calc(var(--radius-lg) + 2px);
  transition: transform 0.16s var(--ease);
}

.app-link:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.app-link:focus-visible {
  border-radius: calc(var(--radius-lg) + 2px);
}

.app {
  border: 1px solid var(--border-hairline);
  /* Match page luminance—cards read as floating rows, not a darker band */
  background: rgba(255, 255, 255, 0.028);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-5);
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
  transition: border-color 0.16s var(--ease), background 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.app-link:hover .app {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.22);
}

.app-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex: none;
  box-shadow: var(--shadow-sm), var(--shadow-inset-top);
  border: 1px solid var(--border);
}

.app h3 {
  margin: 0 0 var(--space-2);
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.22;
  color: var(--text);
}

.app p {
  margin: 0 0 var(--space-4);
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.58;
  max-width: 56ch;
  letter-spacing: 0.008em;
}

.app .links {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  flex-wrap: wrap;
  color: var(--text-tertiary);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.app .links a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.app .links a:hover {
  color: var(--accent);
  text-decoration: none;
  border-bottom-color: rgba(107, 158, 255, 0.35);
}

/* Footer */

footer {
  margin-top: var(--space-12);
  padding: var(--space-8) 0 var(--space-5);
  color: rgba(255, 255, 255, 0.38);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.03em;
  border-top: 1px solid var(--border-hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

footer a {
  color: rgba(255, 255, 255, 0.48);
}

footer a:hover {
  color: rgba(255, 255, 255, 0.72);
}

.small {
  font-size: 12px;
  color: var(--text-tertiary);
  font-weight: 450;
  letter-spacing: 0.01em;
}

section {
  scroll-margin-top: 88px;
}

/* Privacy page */

main:not(.hero) {
  flex: 1;
  padding: var(--space-6) 0 var(--space-12);
}

.content-card {
  max-width: min(58ch, 100%);
  margin: 0 auto;
  background: linear-gradient(180deg, rgba(18, 21, 28, 0.96) 0%, rgba(14, 17, 22, 0.94) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-12) var(--space-8);
  box-shadow: var(--shadow-md), var(--shadow-inset-top);
}

@media (max-width: 640px) {
  .content-card {
    padding: var(--space-8) var(--space-5);
  }
}

.content-card h1 {
  margin: 0 0 var(--space-8);
  font-size: clamp(1.45rem, 2.8vw, 1.75rem);
  font-weight: 650;
  letter-spacing: -0.032em;
  line-height: 1.22;
  color: var(--text);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-hairline);
}

.content-card h2 {
  margin: var(--space-12) 0 var(--space-4);
  font-size: 1.02rem;
  font-weight: 650;
  letter-spacing: -0.022em;
  color: var(--text);
  line-height: 1.38;
}

.content-card h2:first-of-type {
  margin-top: var(--space-8);
}

.content-card p.small {
  margin-top: var(--space-6);
}

.content-card h3 {
  margin: var(--space-8) 0 var(--space-3);
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: -0.012em;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.42;
}

.content-card p {
  margin: 0 0 var(--space-5);
  color: rgba(255, 255, 255, 0.56);
  font-size: 15px;
  line-height: 1.68;
  max-width: 58ch;
}

.content-card p + h2 {
  margin-top: var(--space-12);
}

.content-card ul {
  margin: 0 0 var(--space-6);
  padding-left: 1.25rem;
  color: rgba(255, 255, 255, 0.56);
  font-size: 15px;
  line-height: 1.68;
  max-width: 58ch;
}

.content-card li {
  margin-bottom: var(--space-3);
}

.content-card ul ul {
  margin-top: var(--space-3);
  margin-bottom: var(--space-3);
  padding-left: 1.15rem;
}

.content-card li::marker {
  color: var(--text-tertiary);
}

.content-card a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.content-card a:hover {
  color: #8cb4ff;
}

.content-card strong {
  color: var(--text);
  font-weight: 600;
}

.placeholder {
  padding: var(--space-6);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-tertiary);
  font-size: 14px;
  font-style: italic;
}

/* App detail page (color-tap) */

.app-page {
  flex: 1;
  margin-top: var(--space-4);
}

.app-header {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
  margin-bottom: var(--space-8);
}

.app-page .app-icon {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-xl);
  object-fit: cover;
  flex: none;
  box-shadow: var(--shadow-md);
}

.app-page h1 {
  margin: 0 0 var(--space-2);
  font-size: clamp(1.65rem, 3vw, 2rem);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.app-page .tagline {
  margin: 0;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.55;
  max-width: 42ch;
}

.app-card {
  background: linear-gradient(165deg, rgba(20, 24, 32, 0.96) 0%, rgba(14, 17, 23, 0.94) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md), var(--shadow-inset-top);
  margin-bottom: var(--space-6);
}

.app-card h2 {
  margin: 0 0 var(--space-4);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.app-card p {
  margin: 0 0 var(--space-5);
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.65;
  max-width: 58ch;
}

.store-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.store-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-width: 200px;
  padding: 13px var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-hairline);
  background: rgba(255, 255, 255, 0.03);
  color: rgba(255, 255, 255, 0.62);
  font-weight: 520;
  font-size: 15px;
  box-sizing: border-box;
  transition: background 0.16s var(--ease), color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.store-btn:hover {
  background: rgba(255, 255, 255, 0.055);
  color: var(--text);
  border-color: var(--border-strong);
  text-decoration: none;
}

.store-btn.primary {
  border: 1px solid transparent;
  background: var(--accent);
  color: var(--accent-on-accent);
  font-weight: 600;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.14) inset, 0 1px 2px rgba(0, 0, 0, 0.25);
}

.store-btn.primary:hover {
  filter: brightness(1.06);
}

.store-btn img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.store-btn--disabled {
  cursor: not-allowed;
  opacity: 0.55;
  pointer-events: none;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.store-btn--disabled > span:first-child {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.store-btn--disabled .coming-soon {
  font-size: 12px;
  color: var(--text-tertiary);
  font-style: italic;
  font-weight: 500;
}

.app-card .secondary-links {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-hairline);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.app-card .secondary-links a {
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.app-card .secondary-links a:hover {
  color: var(--accent);
  border-bottom-color: rgba(107, 158, 255, 0.4);
}

@media (prefers-reduced-motion: reduce) {
  /* Avoid scroll-linked luminance bands: uniform base + soft top glow only */
  body {
    background-attachment: scroll;
    background-color: var(--bg-base);
    background-image: radial-gradient(
      ellipse 100% 80% at 50% -15%,
      rgba(107, 158, 255, 0.04),
      transparent 55%
    );
    background-size: auto;
  }

  a,
  .btn,
  .btn.primary,
  .store-btn,
  .store-btn.primary,
  .app-link,
  .feature,
  .app,
  .brand,
  .mini-card {
    transition: none;
  }

  .app-link:hover {
    transform: none;
  }
}