:root {
    --primary-color: #6f4e37; /* Coffee Brown */
    --secondary-color: #d2b48c; /* Tan */
    --accent-color: #e6c9a8;
    --text-dark: #2c3e50;
    --text-light: #f8f9fa;
    --bg-light: #f4f7f6;
    --card-shadow: 0 4px 6px rgba(0,0,0,0.1);
    --card-radius: 15px;
}

body {
    background-color: var(--bg-light);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
}

.navbar {
    background-color: var(--primary-color) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #5a3d2b;
    border-color: #5a3d2b;
}

.card {
    border: none;
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    transition: transform 0.2s;
}

.auth-card {
    margin-top: 50px;
    border-radius: 20px;
    overflow: hidden;
}

.auth-card .card-header {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    font-size: 1.5rem;
    padding: 20px;
    border-bottom: none;
}

.loyalty-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, #a07050 100%);
    color: white;
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    position: relative;
    overflow: hidden;
    min-height: 200px;
}

.loyalty-card::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}

.loyalty-card .card-title {
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 5px;
}

.loyalty-card .customer-id {
    font-family: 'Courier New', Courier, monospace;
    letter-spacing: 2px;
    opacity: 0.9;
}

.loyalty-card .points-badge {
    background: rgba(255,255,255,0.2);
    padding: 10px 20px;
    border-radius: 50px;
    display: inline-block;
    margin-top: 15px;
    backdrop-filter: blur(5px);
}

.loyalty-card img.qr-code {
    border-radius: 10px;
    background: white;
    padding: 5px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.dashboard-section-title {
    border-left: 5px solid var(--primary-color);
    padding-left: 15px;
    margin-bottom: 25px;
    color: var(--primary-color);
}

#reader {
    width: 100%;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.product-card img {
    height: 200px;
    object-fit: cover;
    border-top-left-radius: var(--card-radius);
    border-top-right-radius: var(--card-radius);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(111, 78, 55, 0.25);
}