:root {
  --pink: #FD7CB9;
  --mint: #99EBE0;
  --gold: #F0DB82;
  --lavender: #ADA6D9;
  --coral: #FF705E;
  --charcoal: #615C66;

  --bg-primary: #0A0A0A;
  --bg-secondary: #141414;
  --bg-card: #1C1C1E;
  --bg-card-hover: #2C2C2E;
  --text-primary: #FFFFFF;
  --text-secondary: #8E8E93;
  --text-tertiary: #636366;
  --border: #2C2C2E;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Nav ────────────────────────────────────────── */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background 0.3s, backdrop-filter 0.3s;
}

nav.scrolled {
  background: rgba(20, 20, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.nav-brand:hover {
  text-decoration: none;
}

.nav-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.nav-name {
  font-size: 1.1rem;
  font-weight: 700;
}

.nav-cta {
  display: inline-block;
  padding: 8px 20px;
  background: var(--pink);
  color: #000;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 20px;
  text-decoration: none;
  transition: opacity 0.2s;
}

.nav-cta:hover {
  opacity: 0.85;
  text-decoration: none;
}

/* ── Hero ───────────────────────────────────────── */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(253, 124, 185, 0.15) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -60%);
  pointer-events: none;
  animation: pulse 6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; transform: translate(-50%, -60%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -60%) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-icon {
  width: 180px;
  height: 180px;
  border-radius: 40px;
  margin-bottom: 32px;
  box-shadow: 0 20px 60px rgba(253, 124, 185, 0.2);
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.hero p {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 40px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--text-primary);
  color: #000;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 12px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.1);
  text-decoration: none;
}

.btn-primary svg {
  width: 20px;
  height: 20px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  text-decoration: none;
}

/* ── Sections shared ────────────────────────────── */

section {
  padding: 100px 0;
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 60px;
  font-size: 1.05rem;
}

/* ── Features ───────────────────────────────────── */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 28px;
  transition: transform 0.25s, border-color 0.25s;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--pink);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(253, 124, 185, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--pink);
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

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

/* Customization callout */

.customize-callout {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.customize-callout h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.customize-callout p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.theme-dots {
  display: flex;
  gap: 8px;
}

.theme-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.1);
}

/* ── Problem section ────────────────────────────── */

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

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 28px;
}

.problem-icon {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--coral);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 112, 94, 0.12);
}

.problem-icon svg {
  width: 22px;
  height: 22px;
}

.problem-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.problem-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.problem-contrast {
  text-align: center;
  padding: 32px;
  border: 1px solid var(--pink);
  border-radius: 16px;
  background: rgba(253, 124, 185, 0.04);
}

.problem-contrast p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.problem-contrast strong {
  color: var(--text-primary);
}

/* ── AI Showcase ────────────────────────────────── */

.ai-section {
  background: var(--bg-primary);
}

.ai-showcase {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.chat-mockup {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 580px;
  margin: 0 auto;
}

.chat-bubble {
  padding: 14px 18px;
  border-radius: 16px;
  font-size: 0.9rem;
  line-height: 1.55;
  max-width: 85%;
}

.chat-bubble.user {
  background: var(--pink);
  color: #000;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
  font-weight: 500;
}

.chat-bubble.ai {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.chat-ai-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--pink);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.chat-program-preview {
  margin-top: 12px;
  padding: 12px;
  background: rgba(253, 124, 185, 0.08);
  border-radius: 10px;
  border: 1px solid rgba(253, 124, 185, 0.15);
}

.chat-program-name {
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.chat-program-days {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chat-program-days span {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: rgba(253, 124, 185, 0.12);
  border-radius: 6px;
  color: var(--text-secondary);
}

.ai-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.ai-feature h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.ai-feature p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.ai-feature .footnote {
  font-size: 0.8rem;
  font-style: italic;
  opacity: 0.7;
  margin-top: 4px;
}

@media (min-width: 1024px) {
  .ai-showcase {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .chat-mockup {
    max-width: none;
  }

  .problem-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ── How it works ───────────────────────────────── */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
  text-align: center;
}

.step {
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(253, 124, 185, 0.12);
  color: var(--pink);
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.step h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ── About ──────────────────────────────────────── */

.about-card {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.about-photo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 24px;
  border: 3px solid var(--border);
}

.about-card blockquote {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 28px;
}

.btn-coffee {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: #FFDD00;
  color: #000;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: 12px;
  text-decoration: none;
  transition: transform 0.2s;
}

.btn-coffee:hover {
  transform: translateY(-2px);
  text-decoration: none;
}

/* ── Download CTA ───────────────────────────────── */

.download-section {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download-section .download-glow {
  position: absolute;
  width: 600px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(253, 124, 185, 0.08) 0%, transparent 70%);
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}

.download-section h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.download-section .download-sub {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 1.05rem;
}

.download-section .download-note {
  color: var(--text-tertiary);
  font-size: 0.85rem;
  margin-top: 20px;
}

/* ── Footer ─────────────────────────────────────── */

footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copy {
  color: var(--text-tertiary);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ── Animations ─────────────────────────────────── */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-glow {
    animation: none;
  }
}

/* ── Responsive ─────────────────────────────────── */

@media (min-width: 640px) {
  .hero-icon {
    width: 200px;
    height: 200px;
    border-radius: 44px;
  }
}

@media (min-width: 1024px) {
  .hero-icon {
    width: 220px;
    height: 220px;
    border-radius: 48px;
  }

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

  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ── Privacy page ───────────────────────────────── */

.privacy-content {
  max-width: 720px;
  margin: 0 auto;
  padding-top: 120px;
  padding-bottom: 80px;
}

.privacy-content h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 40px;
}

.privacy-section {
  margin-bottom: 32px;
}

.privacy-section h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.privacy-section p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}