.demo-hero {

    padding: 9rem 0 4rem;
    text-align: center;
    background: radial-gradient(circle at 50% 0%, rgba(34, 197, 94, 0.16), transparent 42%), var(--bg-darker);
}

.demo-hero h1 { margin-bottom: 1rem; }

.demo-hero p {
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-muted);
    font-size: 1.08rem;
}

.demo-body { padding: 4rem 0 6rem; }

.demo-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 310px;
    gap: 2rem;
    align-items: start;
}

.demo-card,
.demo-aside {
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
}

.demo-card h2,
.demo-aside h2 { margin-bottom: 0.65rem; }

.demo-intro,
.demo-note { color: var(--text-muted); }

.demo-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 1.25rem;
    margin-top: 2rem;
}

.demo-grid .full { grid-column: 1 / -1; }
.demo-card input[type="date"] { color-scheme: dark; }
.demo-card textarea { resize: vertical; }

.demo-aside ul {
    list-style: none;
    margin: 1.25rem 0;
    padding: 0;
}

.demo-aside li {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.demo-aside i {
    margin-top: 0.2rem;
    color: var(--primary-green);
}

.demo-success {
    display: none;
    padding: 3rem 1rem;
    text-align: center;
}

.demo-success i {
    margin-bottom: 1rem;
    color: var(--primary-green);
    font-size: 3rem;
}

.form-hint {
    display: block;
    margin-top: 0.4rem;
    color: var(--text-muted);
    font-size: 0.8rem;
}

@media (max-width: 850px) {
    .demo-layout { grid-template-columns: 1fr; }
    .demo-aside { order: -1; }
}

@media (max-width: 620px) {
    .demo-grid { grid-template-columns: 1fr; }
    .demo-grid .full { grid-column: auto; }
    .demo-card, .demo-aside { padding: 1.4rem; }
}