/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: 'Plus Jakarta Sans', 'Inter', sans-serif; margin: 0 0 .5em; line-height: 1.15; color: var(--text-strong); }
p { margin: 0 0 1em; color: var(--text-muted); line-height: 1.65; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
button { font: inherit; }

:root {
  --bg: #ffffff;
  --bg-alt: #f6f7fb;
  --text: #3a3f4b;
  --text-strong: #14151a;
  --text-muted: #656b78;
  --text-on-dark: #eef0f7;
  --text-on-dark-muted: #b9bfd4;

  --primary: #4338ca;
  --primary-strong: #372ea8;
  --accent: #06b6d4;

  --border: #e6e8f0;
  --card-bg: #ffffff;
  --shadow: 0 4px 24px rgba(20, 21, 26, 0.06);
  --shadow-lg: 0 20px 60px rgba(30, 27, 75, 0.16);

  --hero-bg-1: #14123a;
  --hero-bg-2: #241f6b;

  --radius: 16px;
  --container-w: 1140px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d0e14;
    --bg-alt: #14151f;
    --text: #c7cade;
    --text-strong: #f4f5fa;
    --text-muted: #9498ad;
    --border: #262838;
    --card-bg: #171826;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --hero-bg-1: #0a0920;
    --hero-bg-2: #1a1650;
  }
}
:root[data-theme="dark"] {
  --bg: #0d0e14;
  --bg-alt: #14151f;
  --text: #c7cade;
  --text-strong: #f4f5fa;
  --text-muted: #9498ad;
  --border: #262838;
  --card-bg: #171826;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --hero-bg-1: #0a0920;
  --hero-bg-2: #1a1650;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--primary);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  z-index: 200;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(67, 56, 202, 0.35);
}
.btn-primary:hover { background: var(--primary-strong); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--text-on-dark, var(--text-strong));
  border-color: rgba(255,255,255,0.35);
}
.hero .btn-ghost { color: var(--text-on-dark); border-color: rgba(255,255,255,0.35); }
.hero .btn-ghost:hover { background: rgba(255,255,255,0.08); }
.btn-sm { padding: 9px 18px; font-size: 0.875rem; }
.btn-lg { padding: 16px 32px; font-size: 1.05rem; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text-strong);
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
}
.main-nav {
  display: flex;
  gap: 32px;
}
.main-nav a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color 0.15s ease;
}
.main-nav a:hover { color: var(--text-strong); }

.header-actions { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card-bg);
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 18px;
  margin: 0 auto;
  background: var(--text-strong);
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--hero-bg-1), var(--hero-bg-2));
  padding: 120px 0 100px;
  text-align: center;
}
.hero-glow {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 500px;
  background: radial-gradient(closest-side, rgba(6, 182, 212, 0.35), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 780px; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
}
.hero h1 {
  color: #fff;
  font-size: clamp(2.1rem, 4.5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.hero-sub {
  color: var(--text-on-dark-muted);
  font-size: 1.1rem;
  max-width: 620px;
  margin: 0 auto 32px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-trust {
  display: flex;
  gap: 28px;
  justify-content: center;
  flex-wrap: wrap;
  color: var(--text-on-dark-muted);
  font-size: 0.88rem;
}
.hero-trust li { position: relative; padding-left: 18px; }
.hero-trust li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ---------- Sections ---------- */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 640px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.section-sub { font-size: 1.05rem; }
.section-head .eyebrow { text-align: center; }

/* ---------- Grid / Cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 18%, transparent), color-mix(in srgb, var(--accent) 18%, transparent));
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
}
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p { font-size: 0.95rem; margin-bottom: 0; }

.value { text-align: left; }
.value-num {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 1.6rem;
  color: color-mix(in srgb, var(--primary) 55%, var(--accent) 45%);
  margin-bottom: 10px;
}
.value h3 { font-size: 1.05rem; margin-bottom: 8px; }
.value p { font-size: 0.92rem; margin-bottom: 0; }

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.step {
  padding: 28px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
}
.step-num {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  margin-bottom: 16px;
}
.step h3 { font-size: 1rem; margin-bottom: 8px; }
.step p { font-size: 0.88rem; margin-bottom: 0; }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: linear-gradient(120deg, var(--primary), color-mix(in srgb, var(--primary) 40%, var(--accent) 60%));
  padding: 72px 0;
  text-align: center;
}
.cta-inner h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2rem); }
.cta-inner p { color: rgba(255,255,255,0.88); max-width: 480px; margin: 0 auto 28px; }
.cta-banner .btn-primary { background: #fff; color: var(--primary-strong); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.cta-banner .btn-primary:hover { background: #f2f2f7; }

/* ---------- Kontak ---------- */
.kontak-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: start;
}
.kontak-info .eyebrow, .kontak-info h2, .kontak-info .section-sub { text-align: left; margin-left: 0; }
.contact-list { margin-top: 28px; display: flex; flex-direction: column; gap: 18px; }
.contact-list li { display: flex; flex-direction: column; gap: 2px; }
.contact-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }
.contact-list a { font-weight: 600; color: var(--text-strong); }
.contact-list a:hover { color: var(--primary); }

.contact-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}
.form-row { margin-bottom: 18px; display: flex; flex-direction: column; gap: 6px; }
.form-row label { font-size: 0.85rem; font-weight: 600; color: var(--text-strong); }
.form-row input, .form-row select, .form-row textarea {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 14px;
  font: inherit;
  background: var(--bg);
  color: var(--text-strong);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}
.form-note { margin: 12px 0 0; font-size: 0.88rem; text-align: center; min-height: 1.2em; }
.form-note.success { color: #16a34a; }
.form-note.error { color: #dc2626; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}
.footer-brand { max-width: 320px; }
.footer-brand p { font-size: 0.88rem; margin: 10px 0 0; }
.footer-nav { display: flex; gap: 24px; }
.footer-nav a { font-size: 0.9rem; color: var(--text-muted); }
.footer-nav a:hover { color: var(--text-strong); }
.footer-copy { font-size: 0.82rem; color: var(--text-muted); width: 100%; text-align: center; margin-top: 8px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .kontak-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 24px 24px;
    gap: 16px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .header-actions .btn-sm { display: none; }
  .hero { padding: 90px 0 72px; }
  .grid-3, .grid-4, .steps { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
}