:root {
    --bg: #0f172a;
    --panel: #111827;
    --card: #1e293b;
    --border: #334155;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --blue: #60a5fa;
    --cyan: #7dd3fc;
    --violet: #8b5cf6;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Inter, Arial, sans-serif;
    color: var(--text);
    background: radial-gradient(circle at top, rgba(96,165,250,.18), transparent 30%), linear-gradient(135deg, #0b1120, #111827 35%, #0f172a);
}
.layout { display: flex; min-height: 100vh; }
.sidebar {
    width: 250px;
    background: rgba(15, 23, 42, .9);
    border-right: 1px solid var(--border);
    padding: 24px;
    position: sticky;
    top: 0;
    height: 100vh;
}
.brand {
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--cyan);
    margin-bottom: 24px;
}
.sidebar a {
    display: block;
    color: var(--text);
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 12px;
    margin-bottom: 8px;
    background: rgba(96,165,250,.07);
}
.content { flex: 1; padding: 32px; }
.hero, .form-card, .card, .note {
    background: rgba(30, 41, 59, .8);
    border: 1px solid var(--border);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    box-shadow: 0 12px 40px rgba(0,0,0,.18);
}
.hero { padding: 48px; }
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin: 22px 0;
}
.card {
    padding: 20px;
    color: var(--text);
    text-decoration: none;
}
.form-card {
    max-width: 820px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
input[type=text], textarea {
    width: 100%;
    margin-top: 8px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: #0f172a;
    color: var(--text);
}
textarea { min-height: 130px; resize: vertical; }
.btn {
    display: inline-block;
    background: linear-gradient(90deg, var(--blue), var(--violet));
    color: white;
    padding: 12px 18px;
    border-radius: 14px;
    border: 0;
    text-decoration: none;
    cursor: pointer;
    font-weight: 700;
}
.note {
    padding: 18px 20px;
    margin-top: 16px;
    color: var(--muted);
}
code {
    background: #0b1120;
    padding: 2px 6px;
    border-radius: 8px;
    color: var(--cyan);
}