:root {
    --primary: #2c3e50;
    --secondary: #34495e;
    --accent: #3498db;
    --danger: #e74c3c;
    --success: #27ae60;
    --warning: #f1c40f;
    --light: #ecf0f1;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f7f6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: var(--primary);
    color: white;
    padding: 1rem 0;
    margin-bottom: 2rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 { margin: 0; font-size: 1.5rem; }
h2 { color: var(--primary); border-bottom: 2px solid var(--accent); padding-bottom: 10px; }

button, .btn {
    padding: 8px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.9rem;
    display: inline-block;
    transition: background 0.2s;
}

.btn-primary { background: var(--accent); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-success { background: var(--success); color: white; }
.btn-warning { background: var(--warning); color: #333; }
.btn-sm { padding: 4px 8px; font-size: 0.8rem; }

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-top: 1rem;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th { background-color: var(--secondary); color: white; }
tr:hover { background-color: #f1f1f1; }

.status-ok { color: var(--success); font-weight: bold; }
.status-order { color: var(--danger); font-weight: bold; animation: pulse 2s infinite; }

.modal {
    display: none; 
    position: fixed; 
    z-index: 1000; 
    left: 0; top: 0; 
    width: 100%; height: 100%; 
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 20px;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
}

.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; }
.form-group input { width: 100%; padding: 8px; border: 1px solid #ddd; border-radius: 4px; }

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.6; }
    100% { opacity: 1; }
}

@media (max-width: 768px) {
    header .container { flex-direction: column; text-align: center; gap: 10px; }
    table { display: block; overflow-x: auto; white-space: nowrap; }
}