/* Shared app landing page styles (CDN) */
:root {
  --color-bg: #f4f3fa;
  --color-bg-alt: #eeedf8;
  --color-surface: #ffffff;
  --color-text: #1a1530;
  --color-text-muted: #5a5470;
  --color-primary: #5b4cdb;
  --color-primary-dark: #4336a8;
  --color-primary-soft: #ece8fd;
  --color-accent: #e85d75;
  --color-accent-soft: #fde8ec;
  --color-border: #ddd8ec;
  --color-success: #2d8a5e;
  --color-warning: #a16e00;
  --color-focus: #5b4cdb;
  --shadow-sm: 0 1px 2px rgba(15, 28, 36, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 28, 36, 0.08);
  --shadow-lg: 0 18px 48px rgba(15, 28, 36, 0.12);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --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: 4.5rem;
  --container: 1120px;
  --header-h: 4.25rem;
  --font: "Segoe UI", "Avenir Next", "Noto Sans", Ubuntu, Cantarell, sans-serif;
  --font-display: "Segoe UI Semibold", "Segoe UI", "Avenir Next", sans-serif;
  --line: 1.65;
  --transition: 180ms ease;
}

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

html {
  scroll-behavior: smooth;
}

@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;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: var(--line);
  color: var(--color-text);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(91, 76, 219, 0.14), transparent 55%),
    radial-gradient(ellipse 70% 45% at 95% 5%, rgba(232, 93, 117, 0.12), transparent 50%),
    linear-gradient(180deg, var(--color-bg) 0%, #f9f8fd 40%, var(--color-bg-alt) 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

body.nav-open {
  overflow: hidden;
}

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

a {
  color: var(--color-primary-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-primary);
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 1000;
  background: var(--color-text);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: var(--space-3);
}

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.section {
  padding: var(--space-7) 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.55);
  border-block: 1px solid rgba(213, 228, 232, 0.7);
}

.section-head {
  margin-bottom: var(--space-6);
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 var(--space-2);
  padding: 0.2rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
  border-radius: 999px;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.2;
  margin: 0 0 var(--space-3);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 var(--space-4);
  color: var(--color-text-muted);
}

.lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(244, 243, 250, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  min-width: 0;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
}

.brand span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a:not(.btn) {
  display: inline-block;
  padding: 0.45rem 0.7rem;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: 8px;
}

.site-nav a:not(.btn):hover,
.site-nav a:not(.btn).is-active {
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.8rem 1.25rem;
  border-radius: 12px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition),
    border-color var(--transition), transform var(--transition),
    box-shadow var(--transition);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, #7c3aed 100%);
  color: #fff;
  box-shadow: 0 8px 20px rgba(91, 76, 219, 0.28);
}

.btn-primary:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, #5b21b6 100%);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-primary-dark);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary-dark);
  border-color: rgba(91, 76, 219, 0.35);
}

.btn-play svg {
  flex-shrink: 0;
}

.btn-sm {
  padding: 0.55rem 0.95rem;
  font-size: 0.9rem;
}

.btn-header {
  white-space: nowrap;
}

/* Hero */
.hero {
  position: relative;
  padding: var(--space-7) 0 var(--space-8);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-7);
  align-items: center;
}

.hero-brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.hero-brand img {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  box-shadow: var(--shadow-md);
}

.hero-brand h1 {
  margin: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: var(--space-5) 0;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-meta li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

.phone-mockup {
  position: relative;
  width: min(100%, 300px);
  margin-inline: auto;
  aspect-ratio: 9 / 18.5;
  padding: 12px;
  border-radius: 36px;
  background: linear-gradient(160deg, #1b2a33, #0f1c24);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.08) inset;
}

.phone-mockup::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 18px;
  background: #0a1218;
  border-radius: 999px;
  z-index: 2;
}

.phone-screen {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 26px;
  background: #102028;
}

.hero-blob {
  position: absolute;
  inset: auto;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91, 76, 219, 0.18), transparent 70%);
  right: -80px;
  top: 40px;
  z-index: -1;
  pointer-events: none;
}

/* Cards / grids */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: var(--space-4);
  border-radius: 14px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

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

.overview-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-6);
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.overview-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-3);
}

.overview-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  color: var(--color-text-muted);
}

.overview-list svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  margin-top: 0.15rem;
}

/* After-call workflow */
.workflow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  counter-reset: step;
}

.workflow-step {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.workflow-step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: var(--space-3);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-weight: 700;
}

.note {
  margin-top: var(--space-5);
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  border-left: 4px solid var(--color-accent);
  color: var(--color-text-muted);
}

/* Performance */
.perf-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.perf-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.perf-item svg {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.perf-item h3 {
  margin-bottom: var(--space-2);
}

.perf-item p {
  margin: 0;
  font-size: 0.95rem;
}

/* Screenshots carousel */
.carousel {
  position: relative;
  max-width: 360px;
  margin-inline: auto;
}

.carousel-viewport {
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #102028;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 9 / 16;
}

.carousel-track {
  display: flex;
  height: 100%;
  transition: transform 280ms ease;
  will-change: transform;
}

.carousel-slide {
  flex: 0 0 100%;
  min-width: 100%;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.carousel-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  display: grid;
  place-items: center;
}

.carousel-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.carousel-dots {
  display: flex;
  gap: 0.4rem;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 0;
  padding: 0;
  background: #b7c9cf;
  cursor: pointer;
}

.carousel-dot.is-active {
  background: var(--color-primary);
  transform: scale(1.15);
}

/* Privacy */
.privacy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.privacy-card h3 {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.privacy-card .tag {
  display: inline-block;
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
}

.tag-shared {
  background: #fff1d6;
  color: var(--color-warning);
}

.tag-safe {
  background: #ddf5e7;
  color: var(--color-success);
}

.privacy-source {
  margin-top: var(--space-5);
  font-size: 0.92rem;
}

/* FAQ */
.faq-list {
  display: grid;
  gap: var(--space-3);
  max-width: 720px;
  margin-inline: auto;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: transparent;
  border: 0;
  font: inherit;
  font-weight: 700;
  text-align: left;
  color: var(--color-text);
  cursor: pointer;
}

.faq-question svg {
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item.is-open .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 var(--space-5) var(--space-4);
  color: var(--color-text-muted);
}

.faq-answer[hidden] {
  display: none;
}

/* Developer */
.developer-panel {
  display: grid;
  grid-template-columns: minmax(240px, 0.9fr) 1.4fr;
  gap: var(--space-5);
  align-items: stretch;
}

.developer-profile {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(160deg, rgba(91, 76, 219, 0.1), rgba(232, 93, 117, 0.06)),
    var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.developer-avatar {
  width: 72px;
  height: 72px;
  margin-bottom: var(--space-3);
  border-radius: 18px;
  object-fit: cover;
  box-shadow: 0 10px 24px rgba(91, 76, 219, 0.28);
}

.developer-profile-app {
  margin: 0 0 var(--space-3);
  color: var(--color-text-muted);
  font-weight: 600;
}

.developer-profile-label {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.developer-profile-name {
  margin: 0;
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  line-height: 1.25;
}

.developer-details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.developer-info-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.developer-info-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: rgba(244, 243, 250, 0.85);
  border: 1px solid transparent;
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}

.developer-info-item:hover {
  border-color: rgba(91, 76, 219, 0.22);
  background: #fff;
  transform: translateY(-2px);
}

.developer-info-item--wide {
  grid-column: 1 / -1;
}

.developer-info-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.developer-info-icon svg {
  width: 20px;
  height: 20px;
}

.developer-info-label {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.developer-info-item a {
  color: var(--color-primary-dark);
  font-weight: 600;
  text-decoration: none;
  word-break: break-word;
}

.developer-info-item a:hover {
  text-decoration: underline;
}

.developer-info-item p {
  margin: 0;
  color: var(--color-text);
  font-weight: 500;
}

/* Final CTA */
.final-cta {
  text-align: center;
  padding: var(--space-7) var(--space-5);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(91, 76, 219, 0.95), rgba(124, 58, 237, 0.92)),
    var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.final-cta h2,
.final-cta p {
  color: #fff;
}

.final-cta p {
  max-width: 32rem;
  margin-inline: auto;
  opacity: 0.95;
}

.final-cta .btn-primary {
  background: #fff;
  color: var(--color-primary-dark);
  box-shadow: none;
}

.final-cta .btn-primary:hover {
  background: #f0fdfa;
  color: var(--color-primary-dark);
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid,
  .overview-panel,
  .developer-panel {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition),
      visibility var(--transition);
    box-shadow: var(--shadow-md);
  }

  .site-nav.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .site-nav a {
    padding: 0.75rem 0.9rem;
  }

  .site-nav .btn-header {
    display: none;
  }

  .card-grid,
  .workflow,
  .perf-grid,
  .privacy-grid,
  .developer-info-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: var(--space-6);
  }

  .phone-mockup {
    width: min(100%, 260px);
  }
}

@media (max-width: 375px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .brand span {
    max-width: 11rem;
  }
}

@media (min-width: 1440px) {
  :root {
    --container: 1200px;
  }
}