/* nex9.de — shared design system */
:root {
  --bg: #f7f8fa;
  --bg-elevated: #ffffff;
  --text: #16181d;
  --text-dim: #5b616e;
  --border: #e3e6ea;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-contrast: #ffffff;
  --success: #16a34a;
  --danger: #dc2626;
  --code-bg: #0f1117;
  --code-text: #e5e7eb;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16,18,22,.04), 0 4px 16px rgba(16,18,22,.06);
  --max-w: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0f12;
    --bg-elevated: #16181d;
    --text: #eceef1;
    --text-dim: #9aa1ac;
    --border: #262a31;
    --accent: #818cf8;
    --accent-hover: #a5b4fc;
    --accent-contrast: #14152b;
    --code-bg: #0a0b0d;
    --code-text: #e5e7eb;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }
html { color-scheme: light dark; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
img { max-width: 100%; }

.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

header.site {
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  position: sticky;
  top: 0;
  z-index: 10;
}
header.site .bar {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand:hover { color: var(--text); text-decoration: none; }
.brand .dot { color: var(--accent); }
nav.top a {
  color: var(--text-dim);
  font-size: .92rem;
  margin-left: 18px;
  font-weight: 500;
}
nav.top a:hover { color: var(--text); text-decoration: none; }

main { padding: 40px 0 60px; }

h1 { font-size: 1.85rem; margin: 0 0 8px; letter-spacing: -.01em; }
h2 { font-size: 1.3rem; margin: 32px 0 12px; letter-spacing: -.01em; }
h3 { font-size: 1.05rem; margin: 20px 0 8px; }
p.lede { color: var(--text-dim); font-size: 1.02rem; margin: 0 0 28px; max-width: 640px; }

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.tool-card {
  display: block;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  transition: transform .12s ease, border-color .12s ease;
}
.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  text-decoration: none;
}
.tool-card .icon { font-size: 1.5rem; display: block; margin-bottom: 8px; }
.tool-card .name { font-weight: 600; color: var(--text); display: block; margin-bottom: 4px; }
.tool-card .desc { color: var(--text-dim); font-size: .86rem; }

.category-label {
  text-transform: uppercase;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--text-dim);
  margin: 36px 0 4px;
}

textarea, input[type=text], input[type=number], select {
  width: 100%;
  font-family: var(--mono);
  font-size: .92rem;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  resize: vertical;
}
textarea:focus, input:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}
label { display: block; font-weight: 600; font-size: .85rem; margin: 16px 0 6px; }
label:first-child { margin-top: 0; }

button, .btn {
  font-family: var(--font);
  font-weight: 600;
  font-size: .88rem;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-contrast);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
button:hover, .btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); text-decoration: none; }
button.secondary, .btn.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
button.secondary:hover, .btn.secondary:hover { border-color: var(--accent); background: transparent; color: var(--text); }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 14px 0; }

.output-box {
  background: var(--code-bg);
  color: var(--code-text);
  font-family: var(--mono);
  font-size: .85rem;
  border-radius: 8px;
  padding: 14px;
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 48px;
  border: 1px solid var(--border);
}

.badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(79,70,229,.12);
  color: var(--accent);
}
.badge.ok { background: rgba(22,163,74,.12); color: var(--success); }
.badge.err { background: rgba(220,38,38,.12); color: var(--danger); }

.note {
  font-size: .82rem;
  color: var(--text-dim);
  margin-top: 10px;
}
.privacy-note {
  margin-top: 28px;
  padding: 12px 14px;
  border-radius: 8px;
  background: rgba(79,70,229,.06);
  border: 1px solid var(--border);
  font-size: .82rem;
  color: var(--text-dim);
}
.privacy-note strong { color: var(--text); }

.ad-slot {
  border: 1px dashed var(--border);
  border-radius: 8px;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: .78rem;
  margin: 24px 0;
}

footer.site {
  border-top: 1px solid var(--border);
  padding: 28px 0 40px;
  color: var(--text-dim);
  font-size: .85rem;
}
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; align-items: center; }
footer.site a { color: var(--text-dim); }
footer.site a:hover { color: var(--text); }
footer.site .links a { margin-right: 16px; }

.breadcrumb { font-size: .82rem; color: var(--text-dim); margin-bottom: 14px; }
.breadcrumb a { color: var(--text-dim); }

table { border-collapse: collapse; width: 100%; margin: 12px 0; }
table th, table td { border: 1px solid var(--border); padding: 8px 10px; font-size: .85rem; text-align: left; }
table th { background: var(--bg); }

code { font-family: var(--mono); background: var(--bg); padding: 1px 6px; border-radius: 4px; font-size: .88em; }

@media (max-width: 640px) {
  nav.top a { margin-left: 12px; font-size: .84rem; }
  h1 { font-size: 1.5rem; }
}