/* ═══════════════════════════════════════════════
   ENERGY CONTROL — Landing Page Styles
   ═══════════════════════════════════════════════ */

/* ── RESET & FOUNDATIONS ──────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg-deep: #050505;
  --bg-surface: #0d0d0d;
  --bg-card: #111111;
  --bg-card-hover: #1a1a1a;
  --border: #1e1e1e;
  --border-glow: #2a2a2a;

  --text-primary: #f0f0f0;
  --text-secondary: #888888;
  --text-muted: #555555;

  --neon-green: #00e676;
  --neon-green-dim: #00c853;
  --neon-yellow: #ffd600;
  --neon-yellow-dim: #f9a825;
  --neon-red: #ff1744;
  --neon-cyan: #00e5ff;
  --neon-purple: #b388ff;

  --glow-green: 0 0 30px rgba(0, 230, 118, 0.15), 0 0 60px rgba(0, 230, 118, 0.05);
  --glow-yellow: 0 0 30px rgba(255, 214, 0, 0.15), 0 0 60px rgba(255, 214, 0, 0.05);

  --font-display: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-display);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: rgba(0, 230, 118, 0.25);
  color: var(--neon-green);
}

a { color: inherit; text-decoration: none; }

/* ── NOISE OVERLAY ────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px;
  pointer-events: none;
  z-index: 9999;
}

/* ── GLOW GRID BACKGROUND ─────────────────────── */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 230, 118, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 230, 118, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 50% at 50% 30%, black 20%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── LAYOUT ───────────────────────────────────── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  position: relative;
  z-index: 1;
}

/* ── NAV ──────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  background: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s;
}

.nav.scrolled {
  padding: 10px 0;
  background: rgba(5, 5, 5, 0.95);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

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

.nav-brand span {
  background: linear-gradient(135deg, var(--neon-green), var(--neon-yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
  letter-spacing: 0.02em;
}

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

.btn-nav {
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--neon-green);
  color: #000;
  transition: all 0.2s;
  letter-spacing: 0.01em;
}

.btn-nav:hover {
  background: #00ff88;
  box-shadow: var(--glow-green);
}

/* ── HERO ─────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 24px 80px;
  position: relative;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 230, 118, 0.08) 0%, transparent 70%);
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  animation: pulse-glow 4s ease-in-out infinite;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--border-glow);
  background: rgba(0, 230, 118, 0.04);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--neon-green);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 32px;
  animation: fade-up 0.8s ease-out;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon-green);
  box-shadow: 0 0 8px var(--neon-green);
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  animation: fade-up 0.8s ease-out 0.1s both;
}

.hero h1 .gradient {
  background: linear-gradient(135deg, var(--neon-green), var(--neon-yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
  font-weight: 400;
  margin-bottom: 48px;
  animation: fade-up 0.8s ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  animation: fade-up 0.8s ease-out 0.3s both;
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── BUTTONS ──────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.25s;
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--neon-green);
  color: #000;
  box-shadow: 0 2px 20px rgba(0, 230, 118, 0.2);
}

.btn-primary:hover {
  background: #00ff88;
  box-shadow: var(--glow-green);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-muted);
  transform: translateY(-2px);
}

.btn svg { width: 18px; height: 18px; }

/* ── APP PREVIEW ──────────────────────────────── */
.preview-section {
  padding: 0 24px 100px;
  position: relative;
  z-index: 1;
}

.preview-wrapper {
  max-width: 960px;
  margin: 0 auto;
  border-radius: var(--radius);
  border: 1px solid var(--border-glow);
  overflow: hidden;
  box-shadow:
    0 4px 60px rgba(0, 0, 0, 0.5),
    0 0 100px rgba(0, 230, 118, 0.04);
  animation: fade-up 1s ease-out 0.5s both;
  position: relative;
}

.preview-wrapper img {
  width: 100%;
  display: block;
}

.preview-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.04);
  pointer-events: none;
}

/* ── STATS BAR ────────────────────────────────── */
.stats-bar {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 100px;
}

.stats-bar .container {
  display: flex;
  justify-content: center;
  gap: 64px;
  flex-wrap: wrap;
}

.stat { text-align: center; }

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--neon-green);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

/* ── FEATURES ─────────────────────────────────── */
.features { padding: 100px 24px; }

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--neon-green);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 64px;
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-green), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

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

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

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.feature-icon.green  { background: rgba(0, 230, 118, 0.1); color: var(--neon-green); }
.feature-icon.yellow { background: rgba(255, 214, 0, 0.1); color: var(--neon-yellow); }
.feature-icon.cyan   { background: rgba(0, 229, 255, 0.1); color: var(--neon-cyan); }
.feature-icon.purple { background: rgba(179, 136, 255, 0.1); color: var(--neon-purple); }
.feature-icon.red    { background: rgba(255, 23, 68, 0.1); color: var(--neon-red); }

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

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

/* ── HOW IT WORKS ─────────────────────────────── */
.how-it-works { padding: 100px 24px; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 64px;
}

.step {
  position: relative;
  padding: 32px 28px;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 3.5rem;
  font-weight: 700;
  background: linear-gradient(180deg, var(--neon-green), transparent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.step p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── PRIVACY CALLOUT ──────────────────────────── */
.privacy { padding: 80px 24px; }

.privacy-card {
  max-width: 900px;
  margin: 0 auto;
  padding: 56px;
  border-radius: var(--radius);
  border: 1px solid var(--border-glow);
  background: linear-gradient(135deg, rgba(0, 230, 118, 0.03), rgba(255, 214, 0, 0.02));
  position: relative;
  overflow: hidden;
}

.privacy-card::before {
  content: '';
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-green), var(--neon-yellow), var(--neon-green));
}

.privacy-card h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.privacy-card h2 .lock { margin-right: 12px; }

.privacy-card p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: 32px;
}

.privacy-points {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 32px;
  list-style: none;
}

.privacy-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.privacy-points li .fa-check {
  color: var(--neon-green);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.privacy-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  font-size: 0.9rem;
  color: var(--neon-green);
  opacity: 0.8;
  transition: opacity 0.2s;
}
.privacy-link:hover { opacity: 1; }
.privacy-link i { font-size: 0.75rem; }

/* ── DOWNLOAD / CTA ───────────────────────────── */
.download {
  padding: 120px 24px;
  text-align: center;
}

.download h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  margin-bottom: 16px;
}

.download h2 .gradient {
  background: linear-gradient(135deg, var(--neon-green), var(--neon-yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.download > p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 48px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 780px;
  margin: 0 auto 40px;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.download-card:hover {
  border-color: var(--neon-green);
  transform: translateY(-4px);
  box-shadow: var(--glow-green);
}

.download-card .os-icon {
  font-size: 2rem;
  line-height: 1;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
}

.download-card:hover .os-icon { color: var(--neon-green); }

.download-card .os-name {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

.download-card .os-detail {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.download-card .btn {
  width: 100%;
  justify-content: center;
  padding: 12px 20px;
  font-size: 0.9rem;
}

.download-card .btn-alt {
  display: block;
  text-align: center;
  margin-top: 8px;
  padding: 8px 16px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  text-decoration: none;
}

.download-card .btn-alt:hover {
  color: var(--neon-green);
  border-color: rgba(0, 230, 118, 0.3);
  background: rgba(0, 230, 118, 0.05);
}

.download-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ── FOOTER ───────────────────────────────────── */
.footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer a {
  color: var(--text-secondary);
  transition: color 0.2s;
}

.footer a:hover { color: var(--neon-green); }

/* ── MOBILE ───────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }

  .feature-grid,
  .steps,
  .download-grid { grid-template-columns: 1fr; }

  .privacy-points { grid-template-columns: 1fr; }
  .privacy-card { padding: 32px 24px; }
  .stats-bar .container { gap: 32px; }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
  }
  .hero-actions .btn { width: 100%; justify-content: center; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── SCROLL REVEAL ────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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