/* ===== Variables ===== */
:root {
  --color-bg: #0f0f14;
  --color-surface: #18181f;
  --color-surface-2: #1e1e28;
  --color-text: #e8e8ed;
  --color-text-muted: #9898a8;
  --color-accent: #6366f1;
  --color-accent-light: #818cf8;
  --color-accent-glow: rgba(99, 102, 241, 0.35);
  --color-border: rgba(255, 255, 255, 0.08);
  --font-heading: 'Outfit', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --radius: 16px;
  --radius-lg: 24px;
  --container: min(1120px, 92vw);
  --header-h: 72px;
}

/* ===== Reset & base ===== */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent-light); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--font-heading); font-weight: 600; margin: 0 0 0.75em; }
h1 { font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); }
h3 { font-size: 1.25rem; }

.container { width: var(--container); margin: 0 auto; padding: 0 1rem; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: #fff;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, #4f46e5 100%);
  box-shadow: 0 4px 20px var(--color-accent-glow);
}
.btn-primary:hover { box-shadow: 0 8px 28px var(--color-accent-glow); }
.btn-lg { padding: 1rem 1.75rem; font-size: 1rem; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(15, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo img {
  height: 48px;
  width: auto;
  max-height: 100%;
  object-fit: contain;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}
.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.main-nav a {
  color: var(--color-text-muted);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-size: 0.9375rem;
  transition: color 0.2s, background 0.2s;
}
.main-nav a:hover { color: var(--color-text); background: rgba(255,255,255,0.06); text-decoration: none; }
.nav-cta .btn { color: #fff; }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 99;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s, opacity 0.25s, visibility 0.25s;
  }
  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav ul { flex-direction: column; align-items: stretch; }
  .main-nav a { display: block; padding: 0.75rem; }
  .nav-cta { margin-top: 0.5rem; }
  .nav-cta .btn { width: 100%; }
  .logo img {
    height: 36px;
    max-height: 36px;
    max-width: min(160px, 50vw);
    width: auto;
    object-fit: contain;
  }
}

/* ===== Hero ===== */
.hero {
  padding: calc(var(--header-h) + 1.25rem) 0 0;
  min-height: auto;
  display: flex;
  align-items: flex-start;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, var(--color-accent-glow) 0%, transparent 55%),
              var(--color-bg);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  padding-top: 1.5rem;
}
.hero-content {
  max-width: 520px;
  margin-top: 0;
  padding-top: 0;
}
.hero-visual {
  margin-top: 0;
  padding-top: 0;
}
.hero h1 { margin-bottom: 0.5em; }
.hero-tagline {
  font-size: 1.25rem;
  color: var(--color-accent-light);
  font-weight: 500;
  margin: 0 0 1rem;
}
.hero-desc, .hero-cta-text {
  color: var(--color-text-muted);
  margin: 0 0 1rem;
}
.app-store-cta { margin-top: 1rem; }

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  position: relative;
}
.phone-mockup {
  position: relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 9 / 19;
  margin: 0;
}
.phone-mockup .screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: top center;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.phone-mockup .screen.active { opacity: 1; z-index: 1; }

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    text-align: center;
  }
  .hero-content { max-width: none; margin: 0 auto; }
  .hero-visual { order: -1; }
  .phone-mockup { max-width: 280px; margin-left: auto; margin-right: auto; }
  .app-store-cta { margin-left: auto; margin-right: auto; }
  .intro { margin-top: 0; padding-top: 1.5rem; }
}

/* ===== Intro ===== */
.intro {
  padding: 1.5rem 0 3rem;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}
@media (min-width: 901px) {
  .intro { margin-top: -28rem; }
}
.intro-lead {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.125rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* ===== Why ===== */
.why {
  padding: 4rem 0;
}
.why h2 { text-align: center; margin-bottom: 1.5rem; }
.why-text {
  max-width: 680px;
  margin: 0 auto;
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

/* ===== Benefits ===== */
.benefits {
  padding: 4rem 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}
.benefits h2 { text-align: center; margin-bottom: 2rem; }
.benefits-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-width: 720px;
  margin: 0 auto;
}
.benefits-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}
.benefits-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}
.benefits-list strong { color: var(--color-text); }

/* ===== Features ===== */
.features {
  padding: 4rem 0;
}
.features > .container > h2 { text-align: center; margin-bottom: 2.5rem; }
.feature-block {
  max-width: 720px;
  margin: 0 auto 2.5rem;
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.feature-block:last-child { margin-bottom: 0; }
.feature-block h3 { margin-bottom: 0.5em; color: var(--color-accent-light); }
.feature-block p { margin: 0 0 0.75em; color: var(--color-text-muted); }
.feature-block p:last-child { margin-bottom: 0; }

/* ===== iOS & Privacy ===== */
.ios-privacy {
  padding: 4rem 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}
.ios-privacy h2 { text-align: center; margin-bottom: 1.5rem; }
.ios-privacy p {
  max-width: 680px;
  margin: 0 auto 1rem;
  color: var(--color-text-muted);
  text-align: center;
}
.ios-privacy p:last-child { margin-bottom: 0; }

/* ===== How it works ===== */
.how-it-works {
  padding: 4rem 0;
}
.how-it-works h2 { text-align: center; margin-bottom: 2rem; }
.how-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 960px;
  margin: 0 auto;
}
.how-card {
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: center;
}
.how-card h3 { margin-bottom: 0.5em; color: var(--color-accent-light); font-size: 1.125rem; }
.how-card p { margin: 0; font-size: 0.9375rem; color: var(--color-text-muted); }

@media (max-width: 700px) {
  .how-cards { grid-template-columns: 1fr; }
}

/* ===== CTA ===== */
.cta {
  padding: 5rem 0;
  text-align: center;
  background: radial-gradient(ellipse 70% 50% at 50% 100%, var(--color-accent-glow) 0%, transparent 60%),
              var(--color-bg);
  border-top: 1px solid var(--color-border);
}
.cta h2 { margin-bottom: 0.75em; }
.cta-text {
  max-width: 480px;
  margin: 0 auto 1.5rem;
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}
.cta .btn { margin-top: 0.5rem; }

/* ===== Policy / Legal page ===== */
.policy-page {
  padding: calc(var(--header-h) + 2rem) 0 4rem;
  min-height: 100vh;
}
.policy-content {
  max-width: 720px;
  margin: 0 auto;
}
.policy-content h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin-bottom: 0.5rem;
}
.policy-lead {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  margin: 0 0 2rem;
}
.policy-content h2 {
  font-size: 1.375rem;
  margin: 2rem 0 0.75rem;
  color: var(--color-text);
}
.policy-content h3 {
  font-size: 1.125rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--color-accent-light);
}
.policy-content p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}
.policy-content ul {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}
.policy-content li { margin-bottom: 0.5rem; }
.policy-content a { color: var(--color-accent-light); }
.policy-back { margin-top: 2.5rem !important; }
.main-nav a.nav-current { color: var(--color-accent-light); font-weight: 600; }

/* ===== Footer ===== */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}
.site-footer p { margin: 0; font-size: 0.875rem; color: var(--color-text-muted); }
.site-footer a { color: var(--color-text-muted); }
.site-footer a:hover { color: var(--color-accent-light); }