:root {
  --bg: #09090b;
  --bg-alt: #111114;
  --bg-card: rgba(24, 24, 30, 0.7);
  --text: #f4f4f5;
  --text-muted: #a1a1aa;
  --accent: #8b5cf6;
  --accent-light: #a78bfa;
  --accent-dark: #6d28d9;
  --glow: rgba(139, 92, 246, 0.15);
  --border: rgba(139, 92, 246, 0.12);
  --radius: 12px;
  --max-width: 1120px;
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 { line-height: 1.15; margin: 0 0 16px; }

h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  text-align: center;
}

p { margin: 0 0 12px; }

a { color: var(--accent-light); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; }

/* ── Header ── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

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

.logo img { height: 30px; display: block; }

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.9rem;
  font-weight: 500;
}

.nav a {
  color: var(--text-muted);
  transition: color 0.2s;
}

.nav a:hover, .nav a:focus {
  color: var(--text);
  text-decoration: none;
}

.lang-switch {
  color: var(--text-muted);
  font-size: 0.85rem;
  border-left: 1px solid var(--border);
  padding-left: 20px;
  margin-left: 4px;
}

.lang-switch strong { color: var(--accent-light); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.hero-bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.35;
  animation: float 20s ease-in-out infinite;
}

.orb-1 {
  width: 500px; height: 500px;
  background: var(--accent-dark);
  top: -10%; left: -5%;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px; height: 400px;
  background: #4c1d95;
  bottom: -15%; right: -10%;
  animation-delay: -7s;
}

.orb-3 {
  width: 300px; height: 300px;
  background: #7c3aed;
  top: 40%; left: 50%;
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -40px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--glow);
  font-size: 0.8rem;
  color: var(--accent-light);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--accent-light), #c4b5fd, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  font-family: var(--font);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 4px 24px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 32px rgba(139, 92, 246, 0.4);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: var(--glow);
  text-decoration: none;
}

/* ── Section ── */
section { padding: 100px 0; }

.section-label {
  display: block;
  text-align: center;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-light);
  font-weight: 600;
  margin-bottom: 12px;
}

.section-sub {
  text-align: center;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 48px;
  font-size: 1.05rem;
}

/* ── Solutions Grid ── */
.solutions { background: var(--bg-alt); }

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: border-color 0.3s, transform 0.2s, box-shadow 0.3s;
  backdrop-filter: blur(8px);
}

.solution-card:hover {
  border-color: rgba(139, 92, 246, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(139, 92, 246, 0.08);
}

.solution-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
}

.solution-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.solution-card p {
  color: var(--text-muted);
  font-size: 0.93rem;
  margin: 0;
}

/* ── Approach ── */
.approach-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.approach-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  backdrop-filter: blur(8px);
  overflow: hidden;
}

.approach-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  opacity: 0.7;
}

.approach-card .tag {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-light);
  font-weight: 600;
  margin-bottom: 16px;
}

.approach-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.approach-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.approach-card ul {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
}

.approach-card ul li {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.approach-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── About ── */
.about { background: var(--bg-alt); }

.about-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.about-content .highlight {
  color: var(--text);
  font-weight: 600;
}

.stats-row {
  display: flex;
  justify-content: center;
  gap: 64px;
  margin-top: 48px;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Contact ── */
.contact-wrapper {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contact-wrapper > p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 36px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-form label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  display: block;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--glow);
}

.contact-form textarea { resize: vertical; min-height: 120px; }

.contact-form .btn {
  align-self: center;
  margin-top: 8px;
}

.contact-email {
  margin-top: 24px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-email a {
  color: var(--accent-light);
  font-weight: 600;
}

.form-result {
  text-align: center;
  font-size: 0.95rem;
  padding: 12px;
  border-radius: 8px;
  display: none;
}

.form-result.success {
  display: block;
  color: #4ade80;
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.2);
}

.form-result.error {
  display: block;
  color: #f87171;
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.2);
}

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Reveal animations ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ── Mobile ── */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav {
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(9, 9, 11, 0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 32px 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
  }

  .nav.open { transform: translateY(0); }

  .lang-switch {
    border-left: none;
    padding-left: 0;
    margin-left: 0;
    border-top: 1px solid var(--border);
    padding-top: 16px;
  }

  .solutions-grid,
  .approach-grid {
    grid-template-columns: 1fr;
  }

  .form-row { grid-template-columns: 1fr; }

  .stats-row {
    gap: 32px;
    flex-wrap: wrap;
  }

  .hero { padding: 100px 0 60px; }
  section { padding: 64px 0; }
}