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

:root {
  --accent: #7b2fff;
  --accent2: #00d4ff;
  --accent3: #ff4ecd;
  --bg-dark: #0a0a12;
  --bg-card: #12121f;
  --bg-section: #0e0e1a;
  --bg-alt: #070710;
  --text: #e8e8f0;
  --text-muted: #8888aa;
  --border: rgba(123, 47, 255, 0.25);
  --glow: rgba(123, 47, 255, 0.35);
  --radius: 14px;
  --trans: 0.35s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

a { color: var(--accent2); text-decoration: none; transition: color var(--trans); }
a:hover { color: var(--accent3); }

ul { list-style: none; }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 20px;
}

.mt-40 { margin-top: 40px; }
.mt-60 { margin-top: 60px; }

/* === HEADER === */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 10, 18, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: default;
  user-select: none;
}

.nav {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 8px;
  transition: background var(--trans), color var(--trans);
}

.nav a:hover {
  background: rgba(123, 47, 255, 0.15);
  color: var(--text);
}

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--trans), opacity var(--trans);
}
.burger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 120px 20px 80px;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(123,47,255,0.18) 0%, transparent 70%),
              radial-gradient(ellipse 50% 40% at 80% 60%, rgba(0,212,255,0.10) 0%, transparent 60%),
              var(--bg-dark);
}

.hero-glow {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123,47,255,0.22) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.08); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 22px;
  background: linear-gradient(135deg, #fff 30%, var(--accent2) 70%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 38px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.btn-primary {
  display: inline-block;
  padding: 14px 40px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #fff !important;
  -webkit-text-fill-color: #fff;
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50px;
  letter-spacing: 0.03em;
  box-shadow: 0 0 30px rgba(123, 47, 255, 0.4);
  transition: transform var(--trans), box-shadow var(--trans);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 50px rgba(123, 47, 255, 0.6);
  color: #fff !important;
}

/* === SECTIONS === */
.section {
  padding: 90px 0;
  background: var(--bg-dark);
}

.section-dark {
  background: var(--bg-alt);
}

.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 auto 50px;
  text-align: center;
}

/* === HEADINGS === */
h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 18px;
}

h2::after {
  content: '';
  display: block;
  width: 56px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 2px;
  margin: 14px auto 0;
}

h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--accent2);
}

/* === CARDS GRID === */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 50px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(123, 47, 255, 0.2);
  border-color: var(--accent);
}

.card-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

/* === STEPS === */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: transform var(--trans), border-color var(--trans), box-shadow var(--trans);
}

.step:hover {
  transform: translateY(-4px);
  border-color: var(--accent2);
  box-shadow: 0 10px 36px rgba(0, 212, 255, 0.15);
}

.step-num {
  font-size: 2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  flex-shrink: 0;
}

/* === MIRROR INFO === */
.mirror-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  margin-top: 48px;
}

.check-list li {
  padding: 8px 0;
  padding-left: 26px;
  position: relative;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(123, 47, 255, 0.1);
}

.check-list li:last-child { border-bottom: none; }

.check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent2);
  font-weight: 700;
}

/* === WARNING BOX === */
.warning-box {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: rgba(255, 78, 205, 0.08);
  border: 1px solid rgba(255, 78, 205, 0.3);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-top: 32px;
  color: var(--text);
  line-height: 1.7;
}

.warning-icon { font-size: 1.8rem; flex-shrink: 0; }

/* === TWO COL === */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  margin-top: 48px;
}

/* === FEATURES GRID === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 22px;
  transition: transform var(--trans), border-color var(--trans), box-shadow var(--trans);
}

.feature:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 10px 36px rgba(123, 47, 255, 0.18);
}

.feature-icon { font-size: 2.2rem; margin-bottom: 14px; }

/* === SECURITY GRID === */
.security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.security-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 24px;
  transition: transform var(--trans), border-color var(--trans), box-shadow var(--trans);
}

.security-item:hover {
  transform: translateY(-4px);
  border-color: var(--accent3);
  box-shadow: 0 10px 36px rgba(255, 78, 205, 0.15);
}

/* === TEXT BLOCK === */
.text-block p {
  color: var(--text-muted);
  margin-bottom: 18px;
  font-size: 1rem;
  line-height: 1.8;
}

.text-block p:last-child { margin-bottom: 0; }

/* === FAQ === */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 50px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--trans);
}

.faq-item.open { border-color: var(--accent); }

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 22px 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  gap: 16px;
  transition: background var(--trans);
}

.faq-question:hover { background: rgba(123, 47, 255, 0.08); }

.faq-arrow {
  color: var(--accent);
  flex-shrink: 0;
  transition: transform var(--trans);
  font-size: 0.8rem;
}

.faq-item.open .faq-arrow { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease, padding 0.3s ease;
  padding: 0 26px;
}

.faq-item.open .faq-answer {
  max-height: 400px;
  padding: 0 26px 22px;
}

.faq-answer p {
  color: var(--text-muted);
  line-height: 1.75;
}

/* === FOOTER === */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 60px 0 36px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 2fr;
  gap: 48px;
}

.footer-logo {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.footer-col p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: var(--text-muted);
  font-size: 0.92rem;
  transition: color var(--trans);
}

.footer-col ul li a:hover { color: var(--accent2); }

.footer-note {
  margin-top: 20px !important;
  font-size: 0.82rem !important;
  opacity: 0.5;
}

/* === ANIMATIONS === */
.animate-card {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .mirror-info,
  .two-col {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 700px) {
  .burger { display: flex; }

  .nav {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(10, 10, 18, 0.97);
    backdrop-filter: blur(16px);
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    gap: 4px;
    z-index: 99;
  }

  .nav.open { display: flex; }

  .nav a {
    width: 100%;
    text-align: center;
    padding: 12px 20px;
    border-radius: 0;
  }

  .steps,
  .cards-grid,
  .features-grid,
  .security-grid {
    grid-template-columns: 1fr;
  }

  .step {
    flex-direction: column;
    gap: 10px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero { padding: 100px 20px 60px; }

  h2 { font-size: 1.5rem; }

  .warning-box { flex-direction: column; }
}

@media (max-width: 480px) {
  .section { padding: 60px 0; }

  .card, .step, .feature, .security-item {
    padding: 22px 18px;
  }

  .mirror-info, .two-col {
    padding: 22px 18px;
  }

  .faq-question { padding: 18px 18px; }

  .faq-item.open .faq-answer { padding: 0 18px 18px; }
}