/* ============================================
   FlashUSDT Pro — style.css
   Dark Crypto Theme: Black + Green Accents
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg:         #0a0c0f;
  --bg-2:       #0f1217;
  --bg-card:    #141820;
  --bg-card-2:  #1a2030;
  --border:     rgba(0,255,120,0.12);
  --border-2:   rgba(255,255,255,0.06);
  --green:      #00ff7a;
  --green-dim:  #00cc60;
  --green-glow: rgba(0,255,122,0.18);
  --text:       #e8edf5;
  --text-muted: #7a8596;
  --text-dim:   #4a5568;
  --font-head:  'Syne', sans-serif;
  --font-mono:  'Space Mono', monospace;
  --radius:     12px;
  --radius-lg:  20px;
  --nav-h:      70px;
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--green-dim); border-radius: 3px; }

/* ============================================
   LAYOUT HELPERS
   ============================================ */
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 800px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 18px;
}
.section-sub {
  font-size: 0.97rem;
  color: var(--text-muted);
  max-width: 620px;
  margin-bottom: 60px;
  line-height: 1.8;
}
.gradient-text {
  background: linear-gradient(135deg, var(--green) 0%, #00c9ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.06);
  opacity: 0;
  transition: opacity var(--transition);
}
.btn:hover::before { opacity: 1; }

.btn-primary {
  background: var(--green);
  color: #000;
  box-shadow: 0 0 24px var(--green-glow);
}
.btn-primary:hover {
  background: #1aff8a;
  box-shadow: 0 0 40px rgba(0,255,122,0.35);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--green);
  border: 1.5px solid var(--green);
}
.btn-outline:hover {
  background: var(--green-glow);
  box-shadow: 0 0 20px var(--green-glow);
  transform: translateY(-2px);
}

.w-full { width: 100%; justify-content: center; margin-top: 28px; }

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(10,12,15,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-2);
  transition: background var(--transition);
}
.navbar.scrolled {
  background: rgba(10,12,15,0.97);
  border-bottom-color: var(--border);
}
.nav-container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 40px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.logo-icon { font-size: 1.4rem; filter: drop-shadow(0 0 6px var(--green)); }
.logo-accent { color: var(--green); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}
.nav-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition);
  letter-spacing: 0.02em;
}
.nav-links a:hover { color: var(--green); }

.nav-cta {
  flex-shrink: 0;
  padding: 10px 22px;
  background: var(--green);
  color: #000;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.nav-cta:hover {
  background: #1aff8a;
  box-shadow: 0 0 20px var(--green-glow);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,255,122,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,122,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
}
.hero-orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,255,122,0.12) 0%, transparent 70%);
  top: -100px; left: -150px;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,200,255,0.08) 0%, transparent 70%);
  bottom: -80px; right: -100px;
}
.hero-container {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 0 auto;
  padding: 80px 24px 60px;
  text-align: center;
}
.hero-badge {
  display: inline-block;
  padding: 7px 18px;
  background: rgba(0,255,122,0.08);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--green);
  margin-bottom: 28px;
  font-family: var(--font-mono);
  text-transform: uppercase;
}
.hero-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.hero-title em {
  font-style: normal;
  color: var(--text-muted);
  font-size: 0.7em;
}
.hero-subtitle {
  font-size: 1rem;
  color: #d0d8e8;
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.9;
}
.hero-btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}
.pulse-dot {
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  margin-left: 2px;
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: 0.6; }
}
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  padding: 24px 40px;
  max-width: 500px;
  margin: 0 auto;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.stat-num {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--green);
}
.stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-2);
  flex-shrink: 0;
  margin: 0 4px;
}
.scroll-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ============================================
   ABOUT / FEATURES
   ============================================ */
.about { background: var(--bg-2); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  border-color: var(--border);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.3), 0 0 30px rgba(0,255,122,0.06);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
  display: block;
}
.feature-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.feature-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ============================================
   PRICING
   ============================================ */
.pricing { background: var(--bg); }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}
.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition);
  position: relative;
}
.price-card:hover {
  border-color: rgba(0,255,122,0.2);
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}
.price-card--featured {
  border-color: var(--green);
  background: linear-gradient(135deg, var(--bg-card) 0%, #0d1f14 100%);
  box-shadow: 0 0 40px rgba(0,255,122,0.1);
  transform: scale(1.03);
}
.price-card--featured:hover { transform: scale(1.03) translateY(-4px); }
.price-card--master { border-color: rgba(0,200,255,0.25); }

.price-badge {
  display: inline-block;
  background: var(--green);
  color: #000;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.price-tier {
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 6px;
}
.price-tagline {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.price-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}
.price-opt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 12px 16px;
  cursor: pointer;
  transition: all var(--transition);
}
.price-opt:hover, .price-opt.active {
  border-color: var(--green);
  background: rgba(0,255,122,0.05);
}
.price-dur {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.price-val {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--green);
}
.price-val small {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  display: block;
  text-align: right;
}
.price-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 4px;
}
.price-features li {
  font-size: 0.83rem;
  color: var(--text-muted);
  padding-left: 4px;
}
.price-features li::first-letter { color: var(--green); }

/* ============================================
   FAQ
   ============================================ */
.faq { background: var(--bg-2); }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--border); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  gap: 16px;
}
.faq-arrow {
  flex-shrink: 0;
  color: var(--green);
  font-size: 1rem;
  transition: transform var(--transition);
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1), padding var(--transition);
}
.faq-a p {
  padding: 0 24px 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-a a { color: var(--green); }
.faq-a code {
  background: var(--bg-2);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--green);
}
.faq-item.open .faq-a { max-height: 300px; }

/* ============================================
   CONTACT
   ============================================ */
.contact { background: var(--bg); }
.contact-card {
  display: flex;
  align-items: center;
  gap: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 52px 52px;
  max-width: 700px;
  box-shadow: 0 0 60px rgba(0,255,122,0.06);
}
.contact-icon {
  font-size: 3.5rem;
  flex-shrink: 0;
  filter: drop-shadow(0 0 12px rgba(0,200,255,0.4));
}
.contact-text h3 {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.contact-text p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.8;
}
.contact-btn { margin-top: 0; width: auto; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border-2);
  padding: 48px 0 32px;
}
.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-2);
}
.footer-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: 0.83rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--green); }
.footer-disclaimer {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.8;
  padding: 16px 20px;
  background: rgba(255,180,0,0.04);
  border: 1px solid rgba(255,180,0,0.1);
  border-radius: var(--radius);
  margin-bottom: 24px;
}
.footer-disclaimer strong { color: #ffc107; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* ============================================
   TELEGRAM FLOAT BUTTON
   ============================================ */
.tg-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 56px; height: 56px;
  background: #229ED9;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(34,158,217,0.4);
  transition: all var(--transition);
  animation: floatIn 0.5s 1s both;
}
.tg-float:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 8px 30px rgba(34,158,217,0.5);
}
@keyframes floatIn {
  from { opacity: 0; transform: scale(0.6); }
  to { opacity: 1; transform: scale(1); }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .price-card--featured { transform: none; }
  .price-card--featured:hover { transform: translateY(-4px); }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  .nav-cta { display: none; }

  .nav-links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    z-index: 999;
    background: rgba(10,12,15,0.99);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 28px 24px 36px;
    gap: 0;
    border-bottom: 1px solid var(--border);
    align-items: stretch;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    font-size: 1.05rem;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-2);
    color: var(--text);
    width: 100%;
    display: block;
  }
  .nav-links a:last-child { border-bottom: none; }
  .nav-links a:hover { color: var(--green); padding-left: 6px; }

  .hamburger { display: flex; }
  .nav-container { gap: 16px; }

  .section { padding: 70px 0; }
  .features-grid { grid-template-columns: 1fr; }
  .hero-stats { padding: 20px 16px; }
  .stat-num { font-size: 1.1rem; }
  .contact-card { flex-direction: column; padding: 36px 28px; text-align: center; }
  .footer-top { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero-btns { flex-direction: row; align-items: center; justify-content: center; flex-wrap: nowrap; gap: 10px; }
  .hero-btns .btn, .hero-btns .btn-demo-green { text-align: center; justify-content: center; flex: 1; min-width: 0; padding-left: 10px; padding-right: 10px; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { width: 60px; height: 1px; }
}