:root {
    color-scheme: dark;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #000;
    color: #fff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: #000;
    color: #fff;
}

.dashboard-shell {
    max-width: 900px;
    margin: 0 auto;
    padding: 32px 20px;
}

.client-grid {
    display: grid;
    gap: 14px;
    margin-top: 0;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

button {
    width: 100%;
    padding: 18px 22px;
    border: 1px solid #fff;
    border-radius: 14px;
    background: transparent;
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.12);
}

button:hover,
button:focus-visible {
    transform: translateY(-2px);
    outline: none;
    background: linear-gradient(135deg, rgba(122, 51, 128, 1), rgba(105, 72, 200, 0.95));
    box-shadow: 0 20px 50px rgba(72, 41, 138, 0.32);
}

button:active {
    transform: translateY(0);
}

@media (max-width: 540px) {
    .dashboard-shell {
        padding: 22px 16px 30px;
    }

    button {
        font-size: 0.97rem;
        padding: 16px 18px;
    }
}