/* ========================================
   Ridgeline Code — Consolidated Stylesheet
   ======================================== */

/* ===== Reset ===== */

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

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
  scrollbar-gutter: stable;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  line-height: 1.47059;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
  font-weight: 600;
  text-wrap: balance;
}

p {
  overflow-wrap: break-word;
  text-wrap: pretty;
}

::selection {
  background: rgba(0, 113, 227, 0.2);
  color: inherit;
}

:focus-visible {
  outline: 3px solid rgba(0, 113, 227, 0.5);
  outline-offset: 2px;
  border-radius: 4px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* ===== Variables ===== */

:root {
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f5f5f7;
  --color-bg-tertiary: #fbfbfd;
  --color-bg-dark: #1d1d1f;
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-tertiary: #86868b;
  --color-text-link: #0066cc;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-accent-active: #005bb5;
  --color-focus-ring: rgba(0, 113, 227, 0.5);
  --color-glass-bg: rgba(255, 255, 255, 0.72);
  --color-glass-bg-heavy: rgba(255, 255, 255, 0.88);
  --color-glass-border: rgba(0, 0, 0, 0.1);
  --color-card-bg: #ffffff;
  --color-card-border: rgba(0, 0, 0, 0.04);
  --color-divider: #d2d2d7;
  --color-family: #ff6b8a;

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", SFMono-Regular, ui-monospace, Menlo, monospace;

  --text-hero: clamp(2.5rem, 5vw + 1rem, 4.5rem);
  --text-h1: clamp(2rem, 4vw + 0.5rem, 3.5rem);
  --text-h2: clamp(1.5rem, 3vw + 0.25rem, 2.5rem);
  --text-h3: clamp(1.25rem, 2vw + 0.25rem, 1.75rem);
  --text-body: 1.0625rem;
  --text-body-lg: 1.25rem;
  --text-caption: 0.875rem;
  --text-small: 0.75rem;

  --tracking-tight: -0.03em;
  --tracking-snug: -0.02em;
  --tracking-normal: -0.01em;
  --tracking-wide: 0.06em;

  --leading-tight: 1.06;
  --leading-snug: 1.2;
  --leading-normal: 1.47059;
  --leading-relaxed: 1.6;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-heavy: 800;

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 8rem;
  --space-3xl: 10rem;

  --content-max: 980px;
  --content-wide: 1120px;
  --content-narrow: 680px;
  --nav-height: 52px;
  --nav-height-compact: 44px;

  --radius-xs: 0.5rem;
  --radius-sm: 0.75rem;
  --radius-md: 1.25rem;
  --radius-lg: 1.75rem;
  --radius-xl: 2.25rem;
  --radius-icon: 22.37%;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.02);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.06), 0 12px 40px rgba(0, 0, 0, 0.1);
  --shadow-elevated: 0 8px 20px rgba(0, 0, 0, 0.06), 0 20px 48px rgba(0, 0, 0, 0.12);
  --shadow-deep: 0 12px 28px rgba(0, 0, 0, 0.08), 0 32px 64px rgba(0, 0, 0, 0.14);
  --shadow-device: 0 8px 24px rgba(0, 0, 0, 0.12), 0 24px 48px rgba(0, 0, 0, 0.16), inset 0 1px 0 rgba(255, 255, 255, 0.1);

  --ease-out: cubic-bezier(0.25, 0.1, 0.25, 1.0);
  --ease-apple: cubic-bezier(0.4, 0.0, 0.2, 1.0);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-instant: 100ms;
  --duration-fast: 200ms;
  --duration-med: 400ms;
  --duration-slow: 600ms;
  --duration-slower: 800ms;
  --duration-slowest: 1200ms;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-primary: #000000;
    --color-bg-secondary: #1d1d1f;
    --color-bg-tertiary: #0d0d0d;
    --color-bg-dark: #f5f5f7;
    --color-text-primary: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-text-tertiary: #86868b;
    --color-text-link: #2997ff;
    --color-accent: #2997ff;
    --color-accent-hover: #4dabff;
    --color-accent-active: #1a82e6;
    --color-focus-ring: rgba(41, 151, 255, 0.5);
    --color-glass-bg: rgba(29, 29, 31, 0.72);
    --color-glass-bg-heavy: rgba(29, 29, 31, 0.92);
    --color-glass-border: rgba(255, 255, 255, 0.08);
    --color-card-bg: rgba(29, 29, 31, 0.6);
    --color-card-border: rgba(255, 255, 255, 0.06);
    --color-divider: #38383a;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.2), 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.3), 0 12px 40px rgba(0, 0, 0, 0.4);
    --shadow-elevated: 0 8px 20px rgba(0, 0, 0, 0.3), 0 20px 48px rgba(0, 0, 0, 0.4);
    --shadow-device: 0 8px 24px rgba(0, 0, 0, 0.4), 0 24px 48px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  }

  ::selection {
    background: rgba(41, 151, 255, 0.3);
  }

  :focus-visible {
    outline-color: var(--color-focus-ring);
  }
}

/* ===== Base ===== */

body {
  font-family: var(--font-sans);
  font-size: var(--text-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-normal);
  overflow-x: hidden;
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: 2000;
  padding: 0.75rem 1rem;
  background: var(--color-text-primary);
  color: var(--color-bg-primary);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-card);
  transform: translateY(calc(-100% - var(--space-md)));
  transition: transform var(--duration-fast) var(--ease-out);
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* ===== Layout ===== */

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

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

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

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

.section--alt {
  background-color: var(--color-bg-secondary);
}

.section__eyebrow {
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.section__title {
  font-size: var(--text-h1);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-snug);
  margin-bottom: var(--space-sm);
}

.text-center {
  text-align: center;
}

/* ===== Navigation ===== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: var(--color-glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-glass-border);
  transition: height var(--duration-med) var(--ease-apple),
              background var(--duration-med) var(--ease-apple),
              border-color var(--duration-med) var(--ease-apple),
              box-shadow var(--duration-med) var(--ease-apple);
}

.nav--scrolled {
  height: var(--nav-height-compact);
  background: var(--color-glass-bg-heavy);
  backdrop-filter: blur(40px) saturate(200%);
  -webkit-backdrop-filter: blur(40px) saturate(200%);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

@supports not (backdrop-filter: blur(20px)) {
  .nav {
    background: var(--color-bg-primary);
    opacity: 0.97;
  }
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-normal);
  transition: opacity var(--duration-fast) var(--ease-out);
}

.nav__logo:hover {
  opacity: 0.7;
}

.nav__logo:active {
  opacity: 0.5;
}

.nav__logo-text {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-snug);
  color: var(--color-text-primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__link {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  padding: var(--space-2xs) 0;
  position: relative;
}

.nav__link:hover {
  color: var(--color-text-primary);
}

.nav__link--active {
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

.nav__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-xs);
  transition: background var(--duration-fast) var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}

.nav__toggle:hover {
  background: rgba(0, 0, 0, 0.04);
}

@media (prefers-color-scheme: dark) {
  .nav__toggle:hover {
    background: rgba(255, 255, 255, 0.06);
  }
}

.nav__toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background-color: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--duration-med) var(--ease-apple);
  position: absolute;
}

.nav__toggle span:nth-child(1) { transform: translateY(-5px); }
.nav__toggle span:nth-child(2) { transform: translateY(0); }
.nav__toggle span:nth-child(3) { transform: translateY(5px); }

.nav__toggle.is-active span:nth-child(1) {
  transform: rotate(45deg) translateY(0);
}

.nav__toggle.is-active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__toggle.is-active span:nth-child(3) {
  transform: rotate(-45deg) translateY(0);
}

@media (max-width: 733px) {
  .nav__links {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-glass-bg-heavy);
    backdrop-filter: blur(40px) saturate(200%);
    -webkit-backdrop-filter: blur(40px) saturate(200%);
    border-bottom: 1px solid var(--color-glass-border);
    padding: var(--space-xs) 0;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--duration-med) var(--ease-apple),
                opacity var(--duration-med) var(--ease-apple),
                visibility 0s linear var(--duration-med);
  }

  .nav__links.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition-delay: 0s;
  }

  .nav--scrolled .nav__links {
    top: var(--nav-height-compact);
  }

  .nav__link {
    display: flex;
    padding: 0.875rem var(--space-md);
    font-size: var(--text-body);
    min-height: 44px;
    align-items: center;
    border-bottom: 1px solid var(--color-divider);
  }

  .nav__link:last-child {
    border-bottom: none;
  }

  .nav__link:active {
    background: rgba(0, 0, 0, 0.04);
  }

  @media (prefers-color-scheme: dark) {
    .nav__link:active {
      background: rgba(255, 255, 255, 0.04);
    }
  }

  .nav__toggle {
    display: flex;
    position: relative;
  }
}

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

.hero {
  min-height: 72vh;
  min-height: 72dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + var(--space-lg)) var(--space-md) var(--space-lg);
  background: var(--color-bg-primary);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 30%;
  left: 50%;
  width: 800px;
  height: 600px;
  transform: translate(-50%, -50%);
  background: radial-gradient(
    ellipse at center,
    rgba(0, 113, 227, 0.04) 0%,
    transparent 70%
  );
  pointer-events: none;
}

@media (prefers-color-scheme: dark) {
  .hero::before {
    background: radial-gradient(
      ellipse at center,
      rgba(41, 151, 255, 0.06) 0%,
      transparent 70%
    );
  }
}

.hero__content {
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}

.hero__logo {
  height: 280px;
  width: auto;
  margin: 0 auto var(--space-xs);
}

@media (max-width: 733px) {
  .hero__logo {
    height: 200px;
  }
}

.hero__title {
  font-size: var(--text-hero);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.hero__subtitle {
  font-size: var(--text-body-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 520px;
  margin: 0 auto var(--space-md);
}

.hero__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-text-tertiary);
  font-size: var(--text-small);
  animation: scrollHint 2s var(--ease-apple) infinite;
}

.hero__scroll-hint svg {
  width: 20px;
  height: 20px;
  opacity: 0.5;
}

@keyframes scrollHint {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.6; }
  50% { transform: translateX(-50%) translateY(6px); opacity: 1; }
}

.hero__bg-pattern {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  opacity: 0.03;
  pointer-events: none;
  transition: transform var(--duration-slowest) linear;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-body);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-normal);
  border: none;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: all var(--duration-fast) var(--ease-apple);
  position: relative;
  overflow: hidden;
}

.btn > * {
  position: relative;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.15) 0%,
    transparent 50%
  );
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.btn:hover::before {
  opacity: 1;
}

.btn--primary {
  background-color: var(--color-accent);
  color: #ffffff;
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  transform: scale(1.02);
  box-shadow: 0 4px 16px rgba(0, 113, 227, 0.3);
}

.btn--primary:active {
  transform: scale(0.97);
  background-color: var(--color-accent-active);
  box-shadow: none;
  transition-duration: var(--duration-instant);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-accent);
}

.btn--secondary:hover {
  background-color: rgba(0, 113, 227, 0.08);
}

.btn--secondary:active {
  background-color: rgba(0, 113, 227, 0.14);
  transform: scale(0.97);
  transition-duration: var(--duration-instant);
}

@media (prefers-color-scheme: dark) {
  .btn--primary:hover {
    box-shadow: 0 4px 16px rgba(41, 151, 255, 0.3);
  }

  .btn--secondary:hover {
    background-color: rgba(41, 151, 255, 0.1);
  }

  .btn--secondary:active {
    background-color: rgba(41, 151, 255, 0.18);
  }
}

/* ===== Link ===== */

.link {
  color: var(--color-accent);
  transition: color var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

.link:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.link--arrow::after {
  content: " \203A";
  font-size: 1.2em;
  display: inline-block;
  transition: transform var(--duration-fast) var(--ease-out);
}

.link--arrow:hover::after {
  transform: translateX(3px);
}

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

.footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-divider);
  padding: var(--space-lg) 0 var(--space-md);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

@media (max-width: 733px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md) var(--space-sm);
  }
}

@media (max-width: 400px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

.footer__col-title {
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.footer__link {
  display: block;
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  padding: var(--space-2xs) 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.footer__link:hover {
  color: var(--color-text-primary);
}

.footer__bottom {
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-sm);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

.footer__copyright {
  font-size: var(--text-small);
  color: var(--color-text-tertiary);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-sm);
}

.footer__bottom-links a {
  font-size: var(--text-small);
  color: var(--color-text-tertiary);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer__bottom-links a:hover {
  color: var(--color-text-primary);
}

/* ===== App Icon ===== */

.app-icon {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

/* ===== Featured App (home page) ===== */

.featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.featured__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.featured__icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-icon);
  margin-bottom: var(--space-sm);
  background: var(--color-bg-secondary);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--duration-med) var(--ease-apple);
}

.featured__icon:hover {
  transform: scale(1.05);
}

.featured__name {
  font-size: var(--text-h2);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-snug);
  margin-bottom: var(--space-xs);
}

.featured__tagline {
  font-size: var(--text-body-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  line-height: var(--leading-relaxed);
}

.featured__device {
  display: flex;
  justify-content: center;
  perspective: 1000px;
}

@media (max-width: 733px) {
  .featured {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .featured__content {
    align-items: center;
  }

  .featured__device {
    order: -1;
  }
}

/* ===== iPhone Mockup ===== */

.iphone-mockup {
  width: 240px;
  height: 490px;
  border-radius: 40px;
  background: #1a1a1a;
  padding: 10px;
  box-shadow: var(--shadow-device);
  position: relative;
  transition: transform var(--duration-med) var(--ease-apple);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.featured__device .iphone-mockup:hover {
  transform: rotateY(-4deg) rotateX(2deg) translateY(-4px);
}

.iphone-mockup::after {
  content: '';
  position: absolute;
  right: -2px;
  top: 100px;
  width: 3px;
  height: 36px;
  background: #2a2a2a;
  border-radius: 0 2px 2px 0;
}

.iphone-mockup__screen {
  width: 100%;
  height: 100%;
  border-radius: 32px;
  overflow: hidden;
  background: var(--color-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.iphone-mockup__screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.iphone-mockup__notch {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 72px;
  height: 22px;
  background: #000000;
  border-radius: 20px;
  z-index: 2;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.iphone-mockup__screen::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    165deg,
    rgba(255, 255, 255, 0.06) 0%,
    transparent 40%,
    transparent 100%
  );
  pointer-events: none;
  border-radius: inherit;
  z-index: 1;
}

/* ===== Value Strip (home page principles) ===== */

.value-strip__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.value-strip__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  padding: var(--space-sm) 0;
}

.value-strip__item strong {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
}

.value-strip__item span {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

@media (max-width: 733px) {
  .value-strip__grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
}

/* ===== App Description (home page story) ===== */

.app-description p {
  font-size: var(--text-body-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-sm);
}

.app-description p:last-child {
  margin-bottom: 0;
}

/* ===== Breadcrumb ===== */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-caption);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-md);
}

.breadcrumb a {
  color: var(--color-accent);
  transition: color var(--duration-fast) var(--ease-out);
}

.breadcrumb a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.breadcrumb__sep::after {
  content: "\203A";
  margin: 0 2px;
  color: var(--color-text-tertiary);
}

/* ===== Accordion (FAQ) ===== */

.accordion {
  border-top: 1px solid var(--color-divider);
}

.accordion__item {
  border-bottom: 1px solid var(--color-divider);
}

.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.125rem 0;
  min-height: 56px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--text-body);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
  text-align: left;
  -webkit-tap-highlight-color: transparent;
  transition: color var(--duration-fast) var(--ease-out);
}

.accordion__trigger:hover {
  color: var(--color-accent);
}

.accordion__icon {
  width: 20px;
  height: 20px;
  transition: transform var(--duration-med) var(--ease-apple);
  flex-shrink: 0;
  margin-left: var(--space-sm);
  color: var(--color-accent);
}

.accordion__item.is-open .accordion__icon {
  transform: rotate(45deg);
}

.accordion__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-med) var(--ease-apple);
}

.accordion__inner {
  padding: 0 0 var(--space-sm);
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ===== App Detail Hero ===== */

.app-hero {
  padding: calc(var(--nav-height) + var(--space-lg)) 0 var(--space-lg);
  background: linear-gradient(
    180deg,
    var(--color-bg-tertiary) 0%,
    var(--color-bg-primary) 100%
  );
  position: relative;
  overflow: hidden;
}

.app-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(255, 107, 138, 0.06) 0%,
    transparent 60%
  );
  pointer-events: none;
}

.app-hero__inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  position: relative;
  z-index: 1;
}

.app-hero__icon {
  width: 128px;
  height: 128px;
  border-radius: var(--radius-icon);
  background: var(--color-bg-secondary);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
  flex-shrink: 0;
  transition: transform var(--duration-med) var(--ease-apple);
}

.app-hero__icon:hover {
  transform: scale(1.05);
}

.app-hero__info {
  flex-grow: 1;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-bottom: var(--space-xs);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(255, 107, 138, 0.12);
  color: var(--color-family);
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.app-hero__name {
  font-size: var(--text-h1);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-snug);
  margin-bottom: var(--space-2xs);
}

.app-hero__tagline {
  font-size: var(--text-body-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  line-height: var(--leading-relaxed);
  max-width: 480px;
}

.app-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-sm);
}

.app-hero__meta-item {
  font-size: var(--text-caption);
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

.app-hero__meta-label {
  display: block;
  font-size: var(--text-small);
  font-weight: var(--weight-regular);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}

.app-hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.launch-note {
  max-width: 520px;
  margin-top: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
  line-height: var(--leading-relaxed);
}

@media (max-width: 733px) {
  .app-hero__icon {
    width: 100px;
    height: 100px;
  }

  .app-hero__inner {
    flex-direction: column;
    text-align: center;
  }

  .app-hero__tagline {
    max-width: 100%;
  }

  .app-hero__meta {
    justify-content: center;
  }

  .app-hero__actions {
    justify-content: center;
  }

  .status-pill {
    margin-left: auto;
    margin-right: auto;
  }
}

/* ===== Screenshot Carousel ===== */

.screenshots {
  padding: var(--space-lg) 0;
  overflow: hidden;
  position: relative;
}

.screenshots__title {
  font-size: var(--text-h2);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-snug);
  text-align: center;
  margin-bottom: var(--space-md);
}

.screenshots__track {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding: 0 var(--space-md);
  padding: var(--space-sm) var(--space-md) var(--space-md);
  -ms-overflow-style: none;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.screenshots__track::-webkit-scrollbar {
  display: none;
}

.screenshots__slide {
  flex: 0 0 auto;
  scroll-snap-align: center;
  transition: transform var(--duration-med) var(--ease-apple);
}

.screenshots__slide .iphone-mockup {
  width: 220px;
  height: 450px;
  transition: transform var(--duration-med) var(--ease-apple),
              box-shadow var(--duration-med) var(--ease-apple);
}

.screenshots__slide:hover .iphone-mockup {
  transform: translateY(-4px);
  box-shadow: var(--shadow-deep);
}

@media (min-width: 734px) {
  .screenshots__track {
    justify-content: center;
  }
}

.screenshots::before,
.screenshots::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}

.screenshots::before {
  left: 0;
  background: linear-gradient(to right, var(--color-bg-primary), transparent);
}

.screenshots::after {
  right: 0;
  background: linear-gradient(to left, var(--color-bg-primary), transparent);
}

.screenshots__dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: var(--space-sm);
}

.screenshots__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-divider);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all var(--duration-med) var(--ease-apple);
  -webkit-tap-highlight-color: transparent;
}

.screenshots__dot:hover {
  background: var(--color-text-tertiary);
}

.screenshots__dot.is-active {
  background: var(--color-accent);
  width: 24px;
  border-radius: 4px;
}

.screenshots__hint {
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: 0.9375rem;
  margin: calc(-1 * var(--space-xs)) auto var(--space-sm);
}

/* ===== Screenshot expand affordance ===== */

.screenshots__slide {
  position: relative;
}

.screenshots__slide .iphone-mockup__screen {
  cursor: zoom-in;
}

.screenshots__expand {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  cursor: zoom-in;
  -webkit-tap-highlight-color: transparent;
  opacity: 0;
  transform: scale(0.9);
  transition: opacity var(--duration-fast) var(--ease-apple),
              transform var(--duration-fast) var(--ease-apple),
              background var(--duration-fast) var(--ease-apple);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.screenshots__expand svg {
  width: 20px;
  height: 20px;
}

.screenshots__slide:hover .screenshots__expand,
.screenshots__expand:focus-visible {
  opacity: 1;
  transform: scale(1);
}

.screenshots__expand:hover {
  background: rgba(0, 0, 0, 0.75);
}

/* Touch devices have no hover state — keep the affordance visible */
@media (hover: none) {
  .screenshots__expand {
    opacity: 1;
    transform: scale(1);
  }
}

/* ===== Lightbox ===== */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(0.75rem, 4vw, 3rem);
  background: rgba(0, 0, 0, 0.82);
  -webkit-backdrop-filter: blur(20px) saturate(120%);
  backdrop-filter: blur(20px) saturate(120%);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-fast) var(--ease-apple),
              visibility var(--duration-fast) var(--ease-apple);
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox__stage {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.lightbox__img {
  max-width: min(420px, 90vw);
  max-height: 86vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: clamp(1.25rem, 4vw, 2.25rem);
  box-shadow: var(--shadow-deep);
  background: var(--color-bg-secondary);
  transform: scale(0.96);
  transition: transform var(--duration-fast) var(--ease-spring);
  touch-action: pan-y;
}

.lightbox.is-open .lightbox__img {
  transform: scale(1);
}

.lightbox__btn {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-radius: var(--radius-full);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: background var(--duration-fast) var(--ease-apple),
              transform var(--duration-fast) var(--ease-apple);
}

.lightbox__btn:hover {
  background: rgba(255, 255, 255, 0.22);
}

.lightbox__btn svg {
  width: 24px;
  height: 24px;
}

.lightbox__close {
  top: max(1rem, env(safe-area-inset-top));
  right: max(1rem, env(safe-area-inset-right));
  width: 44px;
  height: 44px;
}

.lightbox__close:active {
  transform: scale(0.92);
}

.lightbox__nav {
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
}

.lightbox__nav:active {
  transform: translateY(-50%) scale(0.92);
}

.lightbox__nav--prev { left: max(0.5rem, env(safe-area-inset-left)); }
.lightbox__nav--next { right: max(0.5rem, env(safe-area-inset-right)); }

.lightbox__counter {
  position: absolute;
  bottom: max(1rem, env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.12);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: var(--weight-medium);
  letter-spacing: 0.02em;
}

@media (max-width: 733px) {
  .lightbox__nav { width: 44px; height: 44px; }
  .lightbox__img { max-width: 92vw; max-height: 80vh; }
}

@media (prefers-reduced-motion: reduce) {
  .lightbox,
  .lightbox__img,
  .lightbox__btn,
  .screenshots__expand {
    transition: none;
  }
  .lightbox__img { transform: none; }
}

/* ===== Privacy Trust Block ===== */

.trust-block {
  text-align: center;
  padding: var(--space-lg) 0;
  position: relative;
}

.trust-block__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  background: rgba(0, 113, 227, 0.08);
  border-radius: var(--radius-md);
}

@media (prefers-color-scheme: dark) {
  .trust-block__icon {
    background: rgba(41, 151, 255, 0.12);
  }
}

.trust-block__title {
  font-size: var(--text-h2);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-snug);
  margin-bottom: var(--space-xs);
}

.trust-block__desc {
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto var(--space-md);
  line-height: var(--leading-relaxed);
}

/* ===== Legal/Prose Pages ===== */

.legal {
  padding: calc(var(--nav-height) + var(--space-lg)) 0 var(--space-xl);
}

.legal__title {
  font-size: var(--text-h1);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-snug);
  margin-bottom: var(--space-xs);
}

.legal__date {
  font-size: var(--text-caption);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-divider);
}

.legal__content h2 {
  font-size: var(--text-h3);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-normal);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-divider);
}

.legal__content h2:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.legal__content h3 {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  margin-top: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.legal__content p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  line-height: var(--leading-relaxed);
}

.legal__content ul,
.legal__content ol {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  padding-left: var(--space-md);
  line-height: var(--leading-relaxed);
}

.legal__content ul {
  list-style-type: disc;
}

.legal__content ol {
  list-style-type: decimal;
}

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

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

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

.legal__content a:hover {
  text-decoration: underline;
}

.legal__content strong {
  color: var(--color-text-primary);
  font-weight: var(--weight-semibold);
}

/* ===== Support Page ===== */

.support-hero {
  padding: calc(var(--nav-height) + var(--space-xl)) 0 var(--space-lg);
  background: linear-gradient(
    180deg,
    var(--color-bg-tertiary) 0%,
    var(--color-bg-primary) 100%
  );
  text-align: center;
  position: relative;
  overflow: hidden;
}

.support-hero::before {
  content: '';
  position: absolute;
  top: 30%;
  left: 50%;
  width: 600px;
  height: 400px;
  transform: translate(-50%, -50%);
  background: radial-gradient(
    ellipse at center,
    rgba(0, 113, 227, 0.04) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.support-hero__title {
  font-size: var(--text-h1);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-snug);
  margin-bottom: var(--space-xs);
  position: relative;
}

.support-hero__subtitle {
  font-size: var(--text-body-lg);
  color: var(--color-text-secondary);
  position: relative;
}

.support-section {
  padding: var(--space-lg) 0;
}

.support-section__title {
  font-size: var(--text-h2);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-snug);
  margin-bottom: var(--space-md);
}

.support-contact {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-xl);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  transition: box-shadow var(--duration-med) var(--ease-out);
}

.support-contact:hover {
  box-shadow: var(--shadow-card);
}

.support-contact__title {
  font-size: var(--text-h3);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-xs);
}

.support-contact__desc {
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.support-compat {
  border-top: 1px solid var(--color-divider);
}

.support-compat__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-divider);
  gap: var(--space-sm);
}

.support-compat__item strong {
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  flex-shrink: 0;
}

.support-compat__item span {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  text-align: right;
}

.version-entry {
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-sm);
}

.version-entry__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-xs);
}

.version-entry__number {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
}

.version-entry__date {
  font-size: var(--text-caption);
  color: var(--color-text-tertiary);
}

.version-entry__desc {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.version-entry__list {
  list-style: disc;
  padding-left: var(--space-md);
}

.version-entry__list li {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-2xs);
}

.version-entry__list li::marker {
  color: var(--color-accent);
}

/* ===== Scroll-Triggered Animations ===== */

[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slower) var(--ease-apple),
              transform var(--duration-slower) var(--ease-apple);
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-animate="scale"] {
  opacity: 0;
  transform: scale(0.92);
}

[data-animate="scale"].is-visible {
  opacity: 1;
  transform: scale(1);
}

.hero__content > * {
  opacity: 0;
  transform: translateY(30px);
  animation: heroElementIn var(--duration-slower) var(--ease-apple) forwards;
}

.hero__content > *:nth-child(1) { animation-delay: 200ms; }
.hero__content > *:nth-child(2) { animation-delay: 400ms; }
.hero__content > *:nth-child(3) { animation-delay: 600ms; }
.hero__content > *:nth-child(4) { animation-delay: 800ms; }

@keyframes heroElementIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }

  .hero__content > * {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .hero__scroll-hint {
    animation: none;
  }
}

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

.contact-form {
  margin-top: var(--space-sm);
  text-align: left;
}

.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

@media (max-width: 540px) {
  .contact-form__row {
    grid-template-columns: 1fr;
  }
}

.contact-form__field {
  display: block;
  margin-bottom: var(--space-sm);
}

.contact-form__label {
  display: block;
  font-size: 0.875rem;
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-2xs);
  color: var(--color-text-secondary);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 0.875rem;
  font: inherit;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-sm);
  -webkit-appearance: none;
  appearance: none;
  transition: border-color var(--duration-fast) var(--ease-apple),
              box-shadow var(--duration-fast) var(--ease-apple);
}

.contact-form textarea {
  resize: vertical;
  min-height: 7rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 22%, transparent);
}

/* Honeypot — visually and from-screen-readers hidden, but bots see it */
.contact-form__hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-form__turnstile:not(:empty) {
  margin-top: var(--space-xs);
}

.contact-form__submit {
  margin-top: var(--space-2xs);
}

.contact-form__submit[disabled] {
  opacity: 0.6;
  cursor: progress;
}

.contact-form__status {
  margin-top: var(--space-xs);
  font-size: 0.9375rem;
  min-height: 1.25em;
}

.contact-form__status.is-error {
  color: #d70015;
}

.contact-form__status.is-success {
  color: #1d8a3f;
}

@media (prefers-color-scheme: dark) {
  .contact-form__status.is-error {
    color: #ff6961;
  }
  .contact-form__status.is-success {
    color: #30d158;
  }
}