/* ===== Base ===== */
:root {
  --bg: #0a0a0a;
  --bg-alt: #111111;
  --surface: #161616;
  --surface-hover: #1d1d1d;
  --border: rgba(255, 255, 255, 0.1);
  --text: #f5f5f5;
  --text-muted: #9a9a9a;
  --accent: rgb(220, 255, 0);
  --accent-dim: rgba(220, 255, 0, 0.12);
  --radius: 16px;
  --container: 1120px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--accent);
}

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

.nav-menu a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

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

.nav-cta {
  padding: 8px 18px;
  border-radius: 10px;
  background: var(--accent);
  color: #0a0a0a !important;
  font-weight: 700;
}

.nav-cta:hover {
  filter: brightness(1.08);
}

/* Burger (mobile) */
.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle-label span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.25s;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 110px 0 90px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 300px at 20% 0%, rgba(255, 255, 255, 0.06), transparent 70%),
    radial-gradient(600px 300px at 80% 10%, rgba(220, 255, 0, 0.06), transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  text-align: center;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid rgba(220, 255, 0, 0.4);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 620px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 56px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 180px;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s, background 0.2s, filter 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #0a0a0a;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(220, 255, 0, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(220, 255, 0, 0.35);
  filter: brightness(1.06);
}

.btn-ghost {
  color: var(--text);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(220, 255, 0, 0.5);
}

/* ===== Sections ===== */
.section {
  padding: 90px 0;
}

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-badge {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 640px;
  margin-bottom: 48px;
}

/* ===== Service cards ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform 0.2s, background 0.2s, border-color 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  background: var(--surface-hover);
  border-color: rgba(220, 255, 0, 0.45);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent-dim);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}

.card-icon svg {
  width: 28px;
  height: 28px;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.card > p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 18px;
}

.card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-list li {
  position: relative;
  padding-left: 22px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.card-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

/* ===== Process steps ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.step-number {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 14px;
}

.step h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.step p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-text {
  color: var(--text-muted);
  margin-bottom: 18px;
  font-size: 1.02rem;
}

.about-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-points li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  padding: 20px 24px;
}

.about-points h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.about-points p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* ===== Contact ===== */
.section-contact {
  background:
    radial-gradient(500px 250px at 50% 0%, rgba(220, 255, 0, 0.07), transparent 70%),
    var(--bg-alt);
  border-top: 1px solid var(--border);
}

.contact-inner {
  text-align: center;
}

.contact-inner .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

.contact-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .cards,
  .steps {
    grid-template-columns: 1fr 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 640px) {
  .cards,
  .steps {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 70px 0 60px;
  }

  .hero-stats {
    gap: 32px;
  }

  /* Mobile menu */
  .nav-toggle-label {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-menu li {
    text-align: center;
  }

  .nav-menu a {
    display: block;
    padding: 16px;
  }

  .nav-cta {
    border-radius: 0;
  }

  .nav-toggle:checked ~ .nav-menu {
    max-height: 320px;
  }

  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}