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

:root {
  --bg: #050510;
  --bg2: #0d0d1a;
  --surface: #111127;
  --surface2: #181832;
  --border: rgba(255,255,255,0.07);
  --text: #e8e8f0;
  --text2: #8888aa;
  --accent: #6c63ff;
  --accent2: #00d4ff;
  --accent3: #ff6b6b;
  --glass: rgba(255,255,255,0.04);
  --glass-border: rgba(255,255,255,0.08);
  --radius: 16px;
  --font: 'Inter', -apple-system, sans-serif;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* === NAV === */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 40px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(5,5,16,0.7);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}
nav.scrolled { background: rgba(5,5,16,0.95); }

.nav-left a.logo {
  font-size: 1.1rem; font-weight: 700; color: #fff; text-decoration: none;
  letter-spacing: -0.02em;
}
.nav-left a.logo span { color: var(--accent); }

.nav-right { display: flex; align-items: center; gap: 24px; }
.nav-right a { color: var(--text2); text-decoration: none; font-size: 0.9rem; transition: color 0.2s; }
.nav-right a:hover { color: #fff; }

.lang-btn {
  background: var(--glass); border: 1px solid var(--glass-border);
  color: var(--text); padding: 6px 14px; border-radius: 8px;
  cursor: pointer; font-size: 0.85rem; font-family: var(--font);
  transition: all 0.2s;
}
.lang-btn:hover { background: var(--surface); border-color: var(--accent); }

/* === HAMBURGER === */
.hamburger {
    display: none; background: none; border: none; cursor: pointer;
    padding: 8px; flex-direction: column; gap: 5px;
}
.hamburger span {
    display: block; width: 24px; height: 2px;
    background: var(--text); border-radius: 2px;
    transition: all 0.3s;
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
    .desktop-nav { display: none; }
    .desktop-nav.open {
        display: flex; flex-direction: column;
        position: fixed; top: 60px; left: 0; right: 0;
        background: rgba(5,5,16,0.98); padding: 24px;
        border-bottom: 1px solid var(--border);
        gap: 16px;
    }
    .desktop-nav.open a { font-size: 1.1rem; }
    .hamburger { display: flex; }
}

/* === SECTIONS === */
section { padding: 100px 40px; max-width: 1100px; margin: 0 auto; }
section.full-width { max-width: none; padding-left: 0; padding-right: 0; }
section h2 {
  font-size: 2.2rem; font-weight: 700; margin-bottom: 12px;
  letter-spacing: -0.03em; color: #fff;
}
section h2 .accent { color: var(--accent); }
section h3 { font-size: 1.3rem; font-weight: 600; color: #fff; }
.section-sub { color: var(--text2); margin-bottom: 48px; font-size: 1.05rem; max-width: 600px; }
.section-label {
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.15em;
  color: var(--accent); margin-bottom: 12px; font-weight: 600;
}

/* === HERO === */
.hero {
  min-height: 100vh; display: flex; flex-direction: column;
  justify-content: center; align-items: flex-start;
  padding-top: 120px; padding-bottom: 80px;
  position: relative; overflow: hidden;
}

.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(108,99,255,0.25) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0,212,255,0.1) 0%, transparent 50%),
    radial-gradient(ellipse 40% 30% at 10% 80%, rgba(255,107,107,0.08) 0%, transparent 50%);
  animation: heroPulse 8s ease-in-out infinite alternate;
}
@keyframes heroPulse {
  0% { opacity: 0.6; filter: brightness(0.9); }
  100% { opacity: 1; filter: brightness(1.05); }
}

.hero-grid-bg {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(108,99,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,99,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 70%);
}

.hero-content { position: relative; z-index: 1; max-width: 760px; margin: 0 auto; text-align: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(108,99,255,0.12); border: 1px solid rgba(108,99,255,0.3);
  color: #b0a8ff; padding: 8px 16px; border-radius: 100px;
  font-size: 0.85rem; font-weight: 500; margin-bottom: 28px;
  animation: fadeInUp 0.6s ease-out;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem); font-weight: 800; line-height: 1.05;
  letter-spacing: -0.04em; margin-bottom: 24px; color: #fff;
  animation: fadeInUp 0.6s 0.1s ease-out both;
}
.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 60%, var(--accent) 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 4s ease infinite;
}
@keyframes gradientShift {
  0%,100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-sub {
  font-size: 1.2rem; color: var(--text2); margin-bottom: 40px;
  max-width: 560px; line-height: 1.7;
  animation: fadeInUp 0.6s 0.2s ease-out both;
}

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; animation: fadeInUp 0.6s 0.3s ease-out both; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 12px; font-weight: 600;
  font-size: 0.95rem; text-decoration: none; transition: all 0.25s;
  cursor: pointer; border: none; font-family: var(--font);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: #fff; box-shadow: 0 4px 24px rgba(108,99,255,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(108,99,255,0.5);
}
.btn-secondary {
  background: var(--glass); color: var(--text); border: 1px solid var(--glass-border);
}
.btn-secondary:hover { background: var(--surface); border-color: var(--accent); }

/* === STATS BAR === */
.stats-bar {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--border);
  border-radius: var(--radius); overflow: hidden;
  margin-top: 60px; animation: fadeInUp 0.6s 0.4s ease-out both;
}
.stat-item {
  background: var(--glass); padding: 28px 24px; text-align: center;
  border: 1px solid var(--glass-border);
}
.stat-number {
  font-size: 2rem; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.82rem; color: var(--text2); margin-top: 4px; }

/* === SERVICES === */
.services { background: var(--bg2); }
.tiers-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; margin-bottom: 48px;
}
.tier-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 28px;
  position: relative; transition: all 0.3s;
}
.tier-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.tier-card.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(108,99,255,0.08) 0%, var(--surface) 100%);
}
.tier-card.featured::before {
  content: 'Most Popular';
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; font-size: 0.72rem;
  font-weight: 600; padding: 4px 14px; border-radius: 100px;
  letter-spacing: 0.05em;
}
.badge-popular {
    position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
    background: var(--accent); color: #fff; font-size: 0.72rem;
    font-weight: 600; padding: 4px 14px; border-radius: 100px;
    letter-spacing: 0.05em; white-space: nowrap;
}
.tier-name { font-size: 0.85rem; font-weight: 600; color: var(--accent); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.08em; }
.tier-price { font-size: 2rem; font-weight: 800; color: #fff; }
.tier-price span { font-size: 0.9rem; color: var(--text2); font-weight: 400; }
.tier-tagline { font-size: 0.88rem; color: var(--text2); margin: 8px 0 20px; }
.tier-features { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.tier-features li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.88rem; color: var(--text); }
.tier-features li::before { content: '✓'; color: var(--accent2); font-weight: 700; flex-shrink: 0; margin-top: 1px; }

/* === HOW IT WORKS === */
.steps { }
.steps-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 32px; position: relative;
}
.steps-grid::before {
  content: ''; position: absolute; top: 40px; left: calc(33.33% - 16px);
  right: calc(33.33% - 16px); height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent));
  opacity: 0.3;
}
.step-card { text-align: center; }
.step-num {
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; font-weight: 800; color: #fff; margin: 0 auto 20px;
  box-shadow: 0 0 32px rgba(108,99,255,0.4);
}
.step-card h3 { margin-bottom: 10px; }
.step-card p { font-size: 0.9rem; color: var(--text2); }

/* === CASE STUDIES === */
.cases { background: var(--bg2); }
.cases-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.case-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
  transition: all 0.3s;
}
.case-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.case-tag {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--accent); font-weight: 600; margin-bottom: 10px;
}
.case-card h3 { font-size: 1rem; margin-bottom: 10px; color: #fff; }
.case-card p { font-size: 0.85rem; color: var(--text2); margin-bottom: 16px; line-height: 1.6; }
.case-metric {
  display: flex; align-items: baseline; gap: 6px;
  background: rgba(108,99,255,0.1); border-radius: 8px; padding: 10px 14px;
}
.case-metric .num { font-size: 1.5rem; font-weight: 800; color: var(--accent2); }
.case-metric .unit { font-size: 0.8rem; color: var(--text2); }

/* === HOW WE DIFFERENT === */
.diff-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.diff-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
  display: flex; gap: 16px; align-items: flex-start;
  transition: all 0.3s;
}
.diff-card:hover { border-color: var(--accent); }
.diff-icon { font-size: 1.8rem; flex-shrink: 0; }
.diff-card h3 { font-size: 1rem; margin-bottom: 6px; }
.diff-card p { font-size: 0.85rem; color: var(--text2); }

/* === FAQ === */
.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 760px; }
.faq-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; overflow: hidden; transition: border-color 0.2s;
}
.faq-item.open { border-color: var(--accent); }
.faq-question {
  width: 100%; background: none; border: none; padding: 20px 24px;
  display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; color: #fff; font-size: 1rem; font-weight: 600;
  font-family: var(--font); text-align: left; gap: 16px;
  transition: background 0.2s;
}
.faq-question:hover { background: rgba(255,255,255,0.02); }
.faq-toggle { font-size: 1.4rem; color: var(--accent); transition: transform 0.3s; flex-shrink: 0; }
.faq-item.open .faq-toggle { transform: rotate(45deg); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
}
.faq-answer:not(.hidden) { max-height: 300px; }
.faq-answer-inner { padding: 0 24px 20px; color: var(--text2); font-size: 0.92rem; line-height: 1.7; }

/* === CTA === */
.cta-section {
  text-align: center; background: linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
}
.cta-section h2 { font-size: 2.5rem; }
.cta-section p { color: var(--text2); font-size: 1.1rem; margin: 16px 0 36px; max-width: 500px; margin-left: auto; margin-right: auto; }
.cta-section .btn { padding: 16px 40px; font-size: 1.05rem; }

/* === FOOTER === */
footer {
  border-top: 1px solid var(--border);
  padding: 40px; text-align: center;
  color: var(--text2); font-size: 0.85rem;
}
footer p { margin-bottom: 6px; }
.footer-note { color: var(--accent); font-size: 0.8rem; }

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0; transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* === RESPONSIVE === */
@media (max-width: 900px) {
  section { padding: 80px 24px; }
  nav { padding: 14px 24px; }
  .tiers-grid, .steps-grid, .cases-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .steps-grid::before { display: none; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .diff-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .hero h1 { font-size: 2.2rem; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .hero-cta { flex-direction: column; }
  .btn { justify-content: center; }
}