/* === Variables === */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f7;
  --color-text: #1d1d1f;
  --color-text-muted: #6e6e73;
  --color-accent: #1DB954;
  --color-accent-hover: #1aa34a;
  --color-card-bg: #1c1c1e;
  --color-card-text: #f5f5f7;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1080px;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --radius: 12px;
}

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

/* === Base === */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* === Layout === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

/* === Nav === */
.site-nav {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  z-index: 100;
  padding: var(--spacing-md) 0;
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav .logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
}

.site-nav .logo span {
  color: var(--color-accent);
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  margin-right: 8px;
  vertical-align: middle;
  display: inline-block;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-accent);
}

/* === Hero === */
.hero {
  text-align: center;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.hero-icon {
  width: 120px;
  height: 120px;
  border-radius: 26px;
  margin: 0 auto var(--spacing-lg);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
}

.hero h1 span {
  color: var(--color-accent);
}

.hero .tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
}

.app-store-badge {
  display: inline-block;
  transition: opacity 0.2s;
}

.app-store-badge:hover {
  opacity: 0.8;
}

.app-store-badge img {
  height: 54px;
  width: auto;
}

.hero-screenshot {
  margin-top: var(--spacing-xl);
}

/* === Phone Mockup === */
.phone-mockup {
  display: inline-block;
  background: var(--color-card-bg);
  border-radius: 32px;
  padding: 12px;
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.15),
    0 4px 12px rgba(0, 0, 0, 0.08);
}

.phone-mockup img {
  border-radius: 22px;
  width: 280px;
}

.phone-mockup--sm img {
  width: 220px;
}

/* === Feature Showcase === */
.feature-showcase {
  padding: var(--spacing-xl) 0;
}

.feature-showcase--alt {
  background: var(--color-bg-alt);
}

.feature-showcase .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.feature-showcase__text {
  text-align: center;
  max-width: 640px;
  margin-bottom: var(--spacing-lg);
}

.feature-icon {
  font-size: 2rem;
  margin: 0 auto var(--spacing-md);
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-card-bg);
  border-radius: 14px;
}

.feature-showcase__text h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
}

.feature-showcase__text p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.feature-showcase__screens {
  display: flex;
  gap: var(--spacing-lg);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--spacing-sm) 0 var(--spacing-md);
  max-width: 100%;
}

.feature-showcase__screens .phone-mockup {
  flex-shrink: 0;
}

.feature-showcase__screens::-webkit-scrollbar {
  height: 6px;
}

.feature-showcase__screens::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 3px;
}

.feature-showcase__screens::-webkit-scrollbar-thumb {
  background: #c5c5c7;
  border-radius: 3px;
}

/* === Social Proof === */
.social-proof {
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.testimonial {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  font-style: italic;
  color: var(--color-text);
  max-width: 640px;
  margin: 0 auto var(--spacing-md);
  line-height: 1.6;
  border: none;
}

.testimonial em {
  color: var(--color-accent);
  font-style: italic;
}

.testimonial-attr {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* === Who It's For === */
.who-its-for {
  background: var(--color-bg-alt);
}

.audience-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}

.audience-item {
  background: var(--color-bg);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 100px;
  padding: 0.6rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
}

/* === Why Section === */
.why-section {
  padding: var(--spacing-xl) 0;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.why-card {
  padding: var(--spacing-lg);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius);
}

.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.why-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.why-card strong {
  color: var(--color-accent);
}

/* === Bottom CTA === */
.bottom-cta {
  text-align: center;
  padding: var(--spacing-xl) 0;
  background: var(--color-bg-alt);
}

.bottom-cta h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
}

.bottom-cta p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-lg);
}

/* === Section Title (shared) === */
.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xl);
}

/* === Footer === */
.site-footer {
  background: var(--color-card-bg);
  color: var(--color-card-text);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-brand {
  font-size: 1.1rem;
  font-weight: 700;
}

.footer-brand span {
  color: var(--color-accent);
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.footer-links a {
  color: var(--color-card-text);
  opacity: 0.7;
  font-size: 0.9rem;
  transition: opacity 0.2s;
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-accent);
}

.footer-copy {
  width: 100%;
  text-align: center;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.8rem;
  opacity: 0.5;
}

/* === Subpage Styles (Privacy, Support) === */
.subpage {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.subpage-content {
  flex: 1;
  padding: var(--spacing-xl) 0;
  max-width: 720px;
  margin: 0 auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

.subpage-content h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
}

.subpage-content .last-updated {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-xl);
}

.subpage-content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.subpage-content p,
.subpage-content li {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.subpage-content ul {
  padding-left: 1.5rem;
}

.subpage-content .contact-box {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.subpage-content .contact-box p {
  margin-bottom: var(--spacing-sm);
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  padding: var(--spacing-md) 0;
}

.faq-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.faq-item p {
  margin-bottom: 0;
}

/* === Responsive === */
@media (max-width: 640px) {
  .phone-mockup img {
    width: 220px;
  }

  .phone-mockup--sm img {
    width: 180px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }

  .nav-links {
    gap: var(--spacing-sm);
  }
}