/* ── NotchWise — Landing Page ── */

:root {
  --bg: #0a0a0a;
  --bg-gradient: #1a1a2e;
  --bg-card: #1a1a2e;
  --bg-card-hover: #222240;
  --border: #2a2a3e;
  --border-subtle: #1e1e32;
  --text: #f8f8f8;
  --text-secondary: #a0a0a0;
  --text-muted: #666680;
  --accent: #2DD4BF;
  --accent-dim: #1a9e8e;
  --accent-glow: rgba(45, 212, 191, 0.15);
  --accent-glow-strong: rgba(45, 212, 191, 0.3);
  --red: #EF4444;
  --orange: #F59E0B;
  --green: #22C55E;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  background-image: linear-gradient(180deg, var(--bg) 0%, var(--bg-gradient) 100%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  font-size: 1rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: #5eeadb; }

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

/* ── Utility ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  display: block;
  text-align: center;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 16px;
  text-align: center;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.65;
  text-align: center;
  margin: 0 auto;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #000;
  box-shadow: 0 0 20px var(--accent-glow), 0 2px 8px rgba(0,0,0,0.3);
}
.btn-primary:hover {
  background: #5eeadb;
  color: #000;
  box-shadow: 0 0 40px var(--accent-glow-strong), 0 4px 16px rgba(0,0,0,0.3);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--bg-card);
  color: var(--text);
  border-color: var(--text-muted);
}

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: all 0.3s;
}
.nav.scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}
.nav-logo:hover { color: var(--text); }
.nav-logo svg {
  width: 28px;
  height: 28px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  padding: 8px 20px !important;
  font-size: 13px !important;
}
.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 8px;
}

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

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.5;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.1;
  margin-bottom: 24px;
  max-width: 750px;
  position: relative;
}
.hero h1 .accent { color: var(--accent); }

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 580px;
  line-height: 1.7;
  margin-bottom: 40px;
}

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

.hero-meta {
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.hero-icon {
  margin-top: 32px;
  border-radius: 28px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

/* ── Demo Section ── */
.demo-section {
  padding: 80px 0;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.demo-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.demo-panel-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

/* Notch mockup */
.notch-mockup {
  background: #111118;
  border-radius: var(--radius);
  padding: 36px 16px 20px;
  position: relative;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.notch-mockup::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 20px;
  background: #000;
  border-radius: 0 0 12px 12px;
}

.notch-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  width: 100%;
  max-width: 220px;
}

.notch-card-deck {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.notch-card-text {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}

.notch-card-hint {
  font-size: 11px;
  color: var(--text-muted);
}

.notch-card-hint kbd {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  font-family: var(--font-mono);
  font-size: 10px;
}

/* Flipped card */
.notch-card-flipped {
  transform: perspective(400px) rotateY(0deg);
}

.notch-card-answer {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  line-height: 1.4;
}

/* Rating buttons mockup */
.rating-buttons {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 12px;
}

.rating-btn {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  border: none;
  cursor: default;
}
.rating-btn.again { background: var(--red); }
.rating-btn.hard { background: var(--orange); }
.rating-btn.good { background: var(--accent); color: #000; }
.rating-btn.easy { background: var(--green); }

/* ── Features ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color 0.3s, background 0.3s;
}
.feature-card:hover {
  border-color: var(--accent-dim);
  background: var(--bg-card-hover);
}
.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── How It Works ── */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: var(--accent-glow);
  border: 2px solid var(--accent-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
}

.step h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.step p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Pricing ── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  position: relative;
}
.price-card.featured {
  border-color: var(--accent-dim);
  box-shadow: 0 0 40px var(--accent-glow), inset 0 1px 0 var(--accent-dim);
}
.price-card.featured::before {
  content: 'BEST VALUE';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #000;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 4px 14px;
  border-radius: 100px;
}
.price-tier {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.price-amount {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 4px;
}
.price-amount .currency {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-secondary);
  vertical-align: super;
}
.price-period {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.price-features {
  list-style: none;
  margin-bottom: 32px;
}
.price-features li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 8px 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.price-features li::before {
  content: '\2713';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.price-features li.excluded::before {
  content: '\2014';
  color: var(--text-muted);
}
.price-features li.excluded {
  color: var(--text-muted);
}
.price-card .btn {
  width: 100%;
  justify-content: center;
}

.pricing-note {
  text-align: center;
  margin-top: 24px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ── Testimonials ── */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-style: italic;
}

/* ── FAQ ── */
.faq-list {
  max-width: 720px;
  margin: 48px auto 0;
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  padding: 20px 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--accent); }
.faq-question .chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: var(--text-muted);
}
.faq-item.open .chevron {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.faq-answer-inner {
  padding: 0 0 20px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}
.footer-tagline {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-links a:hover { color: var(--text-secondary); }
.footer-brand {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Subpages (Privacy, Terms, Support) ── */
.subpage {
  padding: 140px 0 80px;
}
.subpage-content {
  max-width: 680px;
  margin: 0 auto;
}
.subpage-content h1 {
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}
.subpage-content .last-updated {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 48px;
}
.subpage-content h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}
.subpage-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
}
.subpage-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
}
.subpage-content ul, .subpage-content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}
.subpage-content li {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 8px;
}
.subpage-content a {
  color: var(--accent);
}
.subpage-content strong {
  color: var(--text);
  font-weight: 600;
}
.subpage-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}
.subpage-content th {
  text-align: left;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}
.subpage-content td {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
}
.subpage-content td:first-child {
  font-family: var(--font-mono);
  color: var(--text);
}

/* ── Animations ── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in.d1 { transition-delay: 0.1s; }
.fade-in.d2 { transition-delay: 0.2s; }
.fade-in.d3 { transition-delay: 0.3s; }
.fade-in.d4 { transition-delay: 0.4s; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }

  .hero h1 { font-size: 2rem; letter-spacing: -1px; }
  .section-title { font-size: 1.5rem; }

  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    gap: 8px;
  }
  .nav-links.open a {
    padding: 12px 0;
    font-size: 16px;
  }
  .nav-links.open .nav-cta {
    margin-top: 8px;
    width: 100%;
    justify-content: center;
  }

  .demo-grid {
    grid-template-columns: 1fr;
    max-width: 340px;
    margin-left: auto;
    margin-right: auto;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

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

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
    padding: 0 16px;
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
}