*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden;
    background: #000000;
    color: #e0e0e0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

#terminal-container {
    height: 100%;
    width: 100%;
}

.overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(10, 10, 20, 0.92);
    z-index: 100;
}

.overlay-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.overlay-content p {
    font-size: 18px;
    color: #c0c0d0;
}

.hidden {
    display: none !important;
}

.btn {
    padding: 10px 24px;
    border: 1px solid #0f3460;
    border-radius: 4px;
    background: #1a1a2e;
    color: #e0e0e0;
    font-size: 15px;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.btn:hover {
    background: #0f3460;
    border-color: #533483;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #0f3460;
    border-top-color: #533483;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}