/* ============================================
   NoiseFix Landing Page — App-Inspired Theme
   Deep navy/purple, glassmorphic, premium feel
   ============================================ */

:root {
  --nf-bg: #0a0816;
  --nf-bg-card: rgba(22, 17, 48, 0.7);
  --nf-bg-card-solid: #161130;
  --nf-surface: rgba(139, 92, 246, 0.08);
  --nf-border: rgba(139, 92, 246, 0.18);
  --nf-border-hover: rgba(139, 92, 246, 0.45);
  --nf-purple: #7c3aed;
  --nf-purple-light: #a78bfa;
  --nf-purple-bright: #8b5cf6;
  --nf-purple-glow: rgba(139, 92, 246, 0.35);
  --nf-indigo: #4f46e5;
  --nf-text: #e8e4f0;
  --nf-text-muted: #9690ab;
  --nf-radius: 16px;
  --nf-radius-sm: 10px;
  --nf-transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Override global bg */
body.nf-page {
  background: var(--nf-bg);
  background-image:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(99, 60, 200, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(79, 70, 229, 0.08) 0%, transparent 50%);
  min-height: 100vh;
}

/* ---- Header override ---- */
.nf-page header {
  background: rgba(10, 8, 22, 0.6);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(139, 92, 246, 0.1);
}

.nf-page header.scrolled {
  background: rgba(10, 8, 22, 0.92);
  border-bottom-color: var(--nf-border);
}

.nf-page .nav-links a:hover {
  color: var(--nf-purple-light);
}

.nf-page .logo .gradient-text {
  background: linear-gradient(135deg, var(--nf-purple-bright), var(--nf-purple-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---- Hero ---- */
.nf-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 20px 80px;
}

.nf-hero::before {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--nf-purple-glow) 0%, transparent 70%);
  opacity: 0.5;
  filter: blur(80px);
  pointer-events: none;
}

.nf-hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.nf-hero-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.nf-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.25);
  color: var(--nf-purple-light);
  font-size: 0.82rem;
  font-weight: 600;
  width: fit-content;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.nf-badge svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.nf-hero-text h1 {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: #fff;
}

.nf-hero-text h1 .nf-gradient {
  background: linear-gradient(135deg, var(--nf-purple-bright) 0%, #c084fc 50%, var(--nf-purple-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nf-hero-text .nf-subtitle {
  font-size: 1.15rem;
  color: var(--nf-text-muted);
  line-height: 1.7;
  max-width: 480px;
}

.nf-hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.nf-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--nf-radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all var(--nf-transition);
  text-decoration: none;
}

.nf-btn-primary {
  background: linear-gradient(135deg, var(--nf-purple) 0%, var(--nf-indigo) 100%);
  color: #fff;
  box-shadow: 0 4px 24px rgba(124, 58, 237, 0.3);
}

.nf-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(124, 58, 237, 0.45);
}

.nf-btn-glass {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid var(--nf-border);
  color: var(--nf-text);
  backdrop-filter: blur(10px);
}

.nf-btn-glass:hover {
  background: rgba(139, 92, 246, 0.18);
  border-color: var(--nf-border-hover);
  transform: translateY(-2px);
}

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

/* Hero phone image */
.nf-hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.nf-hero-visual img {
  width: 100%;
  max-width: 460px;
  border-radius: 24px;
  filter: drop-shadow(0 20px 60px rgba(124, 58, 237, 0.25));
  animation: nfFloat 6s ease-in-out infinite;
}

@keyframes nfFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

/* ---- Stats Bar ---- */
.nf-stats {
  padding: 0 20px;
  position: relative;
  z-index: 1;
  margin-top: -40px;
}

.nf-stats-inner {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--nf-bg-card);
  border: 1px solid var(--nf-border);
  border-radius: var(--nf-radius);
  backdrop-filter: blur(20px);
  overflow: hidden;
}

.nf-stat {
  padding: 30px;
  text-align: center;
  background: rgba(22, 17, 48, 0.4);
}

.nf-stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 4px;
  background: linear-gradient(135deg, #fff 60%, var(--nf-purple-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nf-stat-label {
  font-size: 0.85rem;
  color: var(--nf-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ---- Section Base ---- */
.nf-section {
  padding: 100px 20px;
  position: relative;
}

.nf-section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.nf-section-header {
  text-align: center;
  margin-bottom: 60px;
}

.nf-section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.nf-section-header p {
  color: var(--nf-text-muted);
  font-size: 1.1rem;
  max-width: 550px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---- Feature Cards ---- */
.nf-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.nf-feature-card {
  background: var(--nf-bg-card);
  border: 1px solid var(--nf-border);
  border-radius: var(--nf-radius);
  padding: 36px 28px;
  backdrop-filter: blur(10px);
  transition: all var(--nf-transition);
  position: relative;
  overflow: hidden;
}

.nf-feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--nf-purple-bright), transparent);
  opacity: 0;
  transition: opacity var(--nf-transition);
}

.nf-feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--nf-border-hover);
  box-shadow: 0 12px 40px rgba(124, 58, 237, 0.12);
}

.nf-feature-card:hover::before {
  opacity: 1;
}

.nf-feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(79, 70, 229, 0.2));
  border: 1px solid rgba(139, 92, 246, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--nf-purple-light);
  font-size: 1.4rem;
}

.nf-feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.nf-feature-card p {
  color: var(--nf-text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* ---- How It Works ---- */
.nf-how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  counter-reset: step;
}

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

.nf-how-step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--nf-purple), var(--nf-indigo));
  color: #fff;
  font-size: 1.4rem;
  font-weight: 800;
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
}

.nf-how-step h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.nf-how-step p {
  color: var(--nf-text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  max-width: 280px;
  margin: 0 auto;
}

/* Connector line between steps */
.nf-how-grid .nf-how-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(50% + 38px);
  width: calc(100% - 76px);
  height: 2px;
  background: linear-gradient(90deg, var(--nf-purple-bright), transparent);
  opacity: 0.3;
}

/* ---- Visual Showcase ---- */
.nf-showcase {
  background: var(--nf-bg-card);
  border: 1px solid var(--nf-border);
  border-radius: 20px;
  padding: 0;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.nf-showcase img {
  width: 100%;
  display: block;
}

.nf-showcase-caption {
  padding: 32px 36px;
  text-align: center;
}

.nf-showcase-caption h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.nf-showcase-caption p {
  color: var(--nf-text-muted);
  font-size: 0.95rem;
}

/* ---- Use Cases ---- */
.nf-usecases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.nf-usecase-card {
  background: var(--nf-bg-card);
  border: 1px solid var(--nf-border);
  border-radius: var(--nf-radius);
  padding: 32px 28px;
  text-align: center;
  transition: all var(--nf-transition);
  backdrop-filter: blur(10px);
}

.nf-usecase-card:hover {
  transform: translateY(-6px);
  border-color: var(--nf-border-hover);
  box-shadow: 0 12px 40px rgba(124, 58, 237, 0.12);
}

.nf-usecase-emoji {
  font-size: 2.2rem;
  margin-bottom: 16px;
  display: block;
}

.nf-usecase-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.nf-usecase-card p {
  color: var(--nf-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ---- CTA ---- */
.nf-cta {
  text-align: center;
  padding: 80px 20px 100px;
}

.nf-cta-box {
  max-width: 700px;
  margin: 0 auto;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(79, 70, 229, 0.1));
  border: 1px solid var(--nf-border);
  border-radius: 24px;
  padding: 60px 40px;
  position: relative;
  overflow: hidden;
}

.nf-cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15), transparent 70%);
  pointer-events: none;
}

.nf-cta-box h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  position: relative;
}

.nf-cta-box p {
  color: var(--nf-text-muted);
  font-size: 1.05rem;
  margin-bottom: 30px;
  position: relative;
}

.nf-cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ---- Footer override ---- */
.nf-page footer {
  border-top-color: var(--nf-border);
  background: rgba(10, 8, 22, 0.5);
}

.nf-page .copyright {
  border-top-color: var(--nf-border);
  color: var(--nf-text-muted);
}

/* ---- Animated Waveform (CSS-only) ---- */
.nf-waveform {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  height: 40px;
  margin-top: 20px;
}

.nf-waveform span {
  display: block;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--nf-purple-bright), var(--nf-purple));
  animation: nfWave 1.2s ease-in-out infinite;
}

.nf-waveform span:nth-child(1) { height: 12px; animation-delay: 0s; }
.nf-waveform span:nth-child(2) { height: 24px; animation-delay: 0.1s; }
.nf-waveform span:nth-child(3) { height: 36px; animation-delay: 0.2s; }
.nf-waveform span:nth-child(4) { height: 20px; animation-delay: 0.3s; }
.nf-waveform span:nth-child(5) { height: 32px; animation-delay: 0.15s; }
.nf-waveform span:nth-child(6) { height: 16px; animation-delay: 0.25s; }
.nf-waveform span:nth-child(7) { height: 28px; animation-delay: 0.05s; }
.nf-waveform span:nth-child(8) { height: 12px; animation-delay: 0.35s; }
.nf-waveform span:nth-child(9) { height: 24px; animation-delay: 0.2s; }
.nf-waveform span:nth-child(10) { height: 36px; animation-delay: 0.1s; }
.nf-waveform span:nth-child(11) { height: 18px; animation-delay: 0.3s; }
.nf-waveform span:nth-child(12) { height: 30px; animation-delay: 0.15s; }

@keyframes nfWave {
  0%, 100% { transform: scaleY(0.4); opacity: 0.5; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* ---- Responsive ---- */

/* Mobile nav overrides for NoiseFix */
@media (max-width: 768px) {
  .nf-page .mobile-menu-btn {
    display: block;
  }
  .nf-page .hamburger,
  .nf-page .hamburger::before,
  .nf-page .hamburger::after {
    background: var(--nf-purple-light);
  }
  .nf-page .nav-links {
    background: rgba(10, 8, 22, 0.97);
    border-left: 1px solid var(--nf-border);
  }
  .nf-page .nav-links a {
    color: var(--nf-text);
  }
  .nf-page .nav-links a:hover {
    color: var(--nf-purple-light);
  }
}

@media (max-width: 900px) {
  .nf-hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .nf-hero-text { align-items: center; }
  .nf-hero-text .nf-subtitle { margin: 0 auto; }
  .nf-hero-actions { justify-content: center; }
  .nf-features-grid,
  .nf-usecases-grid,
  .nf-how-grid { grid-template-columns: 1fr 1fr; }
  .nf-how-grid .nf-how-step::after { display: none; }
  .nf-hero-text h1 { font-size: 2.8rem; }
}

@media (max-width: 600px) {
  .nf-hero-text h1 { font-size: 2.2rem; }
  .nf-features-grid,
  .nf-usecases-grid,
  .nf-how-grid { grid-template-columns: 1fr; }
  .nf-stats-inner { grid-template-columns: 1fr; }
  .nf-stat { border-bottom: 1px solid var(--nf-border); }
  .nf-stat:last-child { border-bottom: none; }
  .nf-hero-actions { flex-direction: column; align-items: center; }
  .nf-btn { width: 100%; justify-content: center; max-width: 300px; }
  .nf-section-header h2 { font-size: 1.8rem; }
  .nf-cta-box { padding: 40px 24px; }
  .nf-cta-box h2 { font-size: 1.6rem; }
}

/* ---- Scroll reveal ---- */
.nf-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.nf-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.nf-reveal:nth-child(2) { transition-delay: 0.1s; }
.nf-reveal:nth-child(3) { transition-delay: 0.2s; }
.nf-reveal:nth-child(4) { transition-delay: 0.25s; }
.nf-reveal:nth-child(5) { transition-delay: 0.3s; }
.nf-reveal:nth-child(6) { transition-delay: 0.35s; }