:root {
    --primary-color: #2563eb;
    --success-color: #22c55e;
    --error-color: #ef4444;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-color: #1f2937;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    line-height: 1.5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 1rem;
}

h1 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* Status Indicator */
#status-container {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.status-online {
    background-color: #dcfce7;
    color: #166534;
}

.status-offline {
    background-color: #fee2e2;
    color: #991b1b;
}

#status-indicator {
    font-size: 1.2rem;
}

.refresh-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0 4px;
    color: inherit;
    transition: transform 0.3s;
}

.refresh-btn:hover {
    transform: rotate(180deg);
}

/* Configuration Section */
.config-section {
    margin-bottom: 2rem;
    background-color: #f8fafc;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

select {
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid #cbd5e1;
    margin-right: 10px;
    min-width: 250px;
    font-size: 1rem;
}

/* Actions Section */
.button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

button {
    cursor: pointer;
    border: none;
    border-radius: 6px;
    padding: 12px 20px;
    font-weight: 600;
    transition: all 0.2s;
}

.secondary-btn {
    background-color: #e2e8f0;
    color: #475569;
}

.secondary-btn:hover {
    background-color: #cbd5e1;
}

.print-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 1rem;
    color: white;
    height: 80px;
}

.print-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}

.restaurant { background-color: #f59e0b; }
.note { background-color: #8b5cf6; }
.invoice { background-color: #2563eb; }
.receipt { background-color: #10b981; }

/* Log Section */
.log-section {
    margin-top: 2rem;
}

#log-output {
    background-color: #1e293b;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: 8px;
    height: 150px;
    overflow-y: auto;
    font-family: 'Consolas', monospace;
    font-size: 0.9rem;
}

.log-entry {
    margin-bottom: 4px;
    border-bottom: 1px solid #334155;
    padding-bottom: 4px;
}
.log-success { color: #4ade80; }
.log-error { color: #f87171; }
.log-info { color: #60a5fa; }