/* Minimal, neat look */
:root {
  --bg: #0f172a;        /* slate-900 */
  --card: #111827;      /* gray-900 */
  --ink: #e5e7eb;       /* gray-200 */
  --muted: #94a3b8;     /* slate-400 */
  --accent: #38bdf8;    /* sky-400 */
  --accent-ink: #0c4a6e;/* sky-900 */
  --shadow: 0 10px 25px rgba(0,0,0,.25);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 20% -10%, #1f2937, transparent 50%) var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

.container {
  width: min(100%, 960px);
  margin-inline: auto;
  padding: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  background: rgba(15,23,42,.6);
  border-bottom: 1px solid rgba(148,163,184,.15);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

h1 { font-size: 1.25rem; margin: .5rem 0; }
nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1rem;
  padding: .35rem .6rem;
  border-radius: 999px;
  transition: color .2s, background .2s;
}
nav a:hover { color: var(--ink); }
nav a.active { background: var(--accent); color: var(--accent-ink); font-weight: 600; }

.hero {
  padding: 3rem 1rem 1.5rem;
}

.card {
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01));
  border: 1px solid rgba(148,163,184,.15);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.card h3 { margin-top: 0; }

form.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: .5rem;
}
label { display: grid; gap: .25rem; font-size: .95rem; color: var(--muted); }
label.full { grid-column: 1 / -1; }

input, textarea {
  width: 100%;
  border: 1px solid rgba(148,163,184,.25);
  background: #0b1220;
  color: var(--ink);
  border-radius: 12px;
  padding: .7rem .8rem;
  outline: none;
}
input:focus, textarea:focus { border-color: var(--accent); }

button {
  grid-column: 1 / -1;
  padding: .75rem 1rem;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  cursor: pointer;
  transition: transform .05s ease-in-out;
}
button:active { transform: translateY(1px); }

.site-footer {
  border-top: 1px solid rgba(148,163,184,.15);
  margin-top: 3rem;
  color: var(--muted);
}

ul.checklist {
  padding-left: 1rem;
}
ul.checklist li { margin: .4rem 0; }