:root {
    --blue: #00aaff;
    --green: #00c853;
    --bg: #f8f9fa;
    --white: #fff;
    --transition: all 0.3s ease;
}

body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: var(--bg);
    color: #222;
}

header {
    background: var(--blue);
    color: white;
    padding: 1rem;
    text-align: center;
    font-size: 1.8rem;
    font-weight: bold;
}

.columns {
    display: flex;
    flex-direction: row;
    gap: 2rem;
    padding: 1rem;
}

.column {
    flex: 1;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

h2 {
    margin-bottom: 1rem;
    font-size: 1.4rem;
    border-bottom: 2px solid #eee;
    padding-bottom: 0.4rem;
}

.order-card {
    background: #e0f7fa;
    margin-bottom: 1rem;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    cursor: pointer;
    transition: var(--transition);
    opacity: 1;
}

.order-card:hover {
    transform: scale(1.02);
}

.order-card.finished {
    opacity: 0;
    transform: scale(0.95);
    transition: var(--transition);
}

.order-card h3 {
    margin: 0;
    font-size: 1.2rem;
}

.order-card .time {
    font-size: 0.85rem;
    color: #555;
}

/* WebSocket Status Banner */
.ws-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #ff6b6b;
    color: white;
    padding: 0.5rem;
    text-align: center;
    z-index: 1000;
    font-weight: bold;
}

@media (max-width: 768px) {
    .columns {
        flex-direction: column;
    }
}