:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-gray: #f8f9fa;
    --dark-gray: #343a40;
}

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

.logo {
    max-height: 80px;
    width: auto;
    filter: brightness(0) invert(1);
}

.card {
    border: none;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-2px);
}

.card-header {
    border-bottom: 2px solid var(--secondary-color);
}

.card-header h3 {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.form-label {
    font-weight: 500;
    color: var(--primary-color);
}

.form-control, .form-select {
    border: 2px solid #dee2e6;
    border-radius: 8px;
    padding: 0.75rem;
    transition: border-color 0.2s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

/* Color Picker Styles */
.color-picker-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-picker {
    width: 60px !important;
    height: 40px !important;
    padding: 2px !important;
    border-radius: 8px !important;
    cursor: pointer;
}

.color-picker::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-picker::-webkit-color-swatch {
    border: none;
    border-radius: 6px;
}

.color-picker::-moz-color-swatch {
    border: none;
    border-radius: 6px;
}

.color-value {
    font-family: monospace;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.btn-primary {
    background-color: var(--secondary-color);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-1px);
}

.uniform-item {
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    border: 1px solid #dee2e6;
}

.size-checkbox {
    display: none;
}

.size-label {
    display: inline-block;
    padding: 8px 16px;
    margin: 5px;
    border: 2px solid #dee2e6;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.size-checkbox:checked + .size-label {
    background-color: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
}

.remove-item {
    color: var(--accent-color);
    cursor: pointer;
    transition: color 0.2s;
}

.remove-item:hover {
    color: #c0392b;
}

/* Responsive Design */
@media (max-width: 768px) {
    .card-header h3 {
        font-size: 1.1rem;
    }

    .btn-primary {
        width: 100%;
        margin-bottom: 10px;
    }

    .uniform-item {
        padding: 15px;
    }

    .color-picker-group {
        flex-direction: column;
        align-items: stretch;
    }

    .color-picker {
        width: 100% !important;
    }

    .logo {
        max-height: 60px;
    }
}

/* Loading Animation */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--light-gray);
    border-top: 5px solid var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

.toast {
    background-color: white;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}