/* ============================================================
   BlankTrading — stylesheet (dark, minimal)
   ============================================================ */

:root {
  --bg: #0a0e17;
  --bg-soft: #0e1420;
  --surface: #121a29;
  --border: #1e2838;
  --blue: #4f9cf9;
  --blue-strong: #2f7ff0;
  --text: #e7edf7;
  --muted: #93a1b8;
  --faint: #64748b;

  --radius: 14px;
  --container: 1040px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, 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: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 .5em; color: #fff; }
h1 { font-size: clamp(2.2rem, 5.2vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.3rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1rem; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: #7bb5fb; }
svg { display: block; max-width: 100%; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

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

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .76rem;
  font-weight: 700;
  color: var(--blue);
  margin: 0 0 1rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: .98rem;
  padding: .8rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--blue-strong); color: #fff; }
.btn-primary:hover { background: #3d89f5; color: #fff; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, .8);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { display: inline-flex; align-items: center; gap: .6rem; color: #fff; }
.brand:hover { color: #fff; }
.brand-mark { display: inline-flex; border-radius: 8px; }
.brand-name { font-weight: 700; font-size: 1.18rem; letter-spacing: -0.02em; color: #fff; }
.brand-name strong { color: var(--blue); font-weight: 800; }

.site-nav { display: flex; align-items: center; }
.nav-menu { display: flex; align-items: center; gap: 2rem; list-style: none; margin: 0; padding: 0; }
.nav-menu a { color: var(--muted); font-weight: 500; font-size: .98rem; }
.nav-menu a:hover { color: #fff; }
.nav-cta {
  border: 1px solid var(--border);
  padding: .5rem 1.1rem;
  border-radius: 999px;
  color: var(--text) !important;
}
.nav-cta:hover { border-color: var(--blue); color: var(--blue) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
}
.nav-toggle span { display: block; width: 20px; height: 2px; margin: 0 auto; background: var(--text); }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(900px 460px at 50% -10%, rgba(79, 156, 249, .14), transparent 65%);
  padding: clamp(5rem, 13vw, 9rem) 0 clamp(4rem, 10vw, 7rem);
  text-align: center;
}
.hero-inner { max-width: 40rem; margin: 0 auto; }
.hero .lead {
  font-size: 1.18rem;
  color: var(--muted);
  margin: 0 auto;
  max-width: 34rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 2.4rem;
}

/* ---------- Sections ---------- */
.section { padding: clamp(4.5rem, 9vw, 7rem) 0; }
.section-alt { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 40rem; margin: 0 auto 3.5rem; text-align: center; }
.section-head-left { text-align: left; margin-left: 0; margin-bottom: 1.5rem; }

/* ---------- Grid / cards ---------- */
.grid { display: grid; gap: 1.6rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--blue); transform: translateY(-3px); }
.card h3 { margin-bottom: .5rem; }
.card p { margin: 0; color: var(--muted); }

/* ---------- About ---------- */
.about-inner { max-width: 42rem; }
.about-text { font-size: 1.12rem; color: var(--muted); margin: 0; }
.about-text strong { color: var(--text); }

/* ---------- Contact ---------- */
.contact { text-align: center; }
.contact-inner { max-width: 34rem; margin: 0 auto; }
.contact-lead { color: var(--muted); font-size: 1.1rem; margin: 0 0 2rem; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
  padding: 2.5rem 0 2rem;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.footer-copy { margin: 0; color: var(--faint); font-size: .9rem; }
.impressum { padding-top: 1.5rem; margin-top: 1.5rem; border-top: 1px solid var(--border); }
.impressum p { margin: 0; color: var(--faint); font-size: .82rem; line-height: 1.7; }
.impressum strong { color: var(--muted); }
.impressum a { color: var(--blue); }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: .5rem 0;
    display: none;
  }
  .nav-menu.open { display: flex; }
  .nav-menu li { padding: 0 28px; }
  .nav-menu a { display: block; padding: .8rem 0; }
  .nav-cta { text-align: center; margin: .5rem 0; }
}