:root {
    --primary-color: #5cb2e6;
    --primary-dark: #3a8bc8;
    --secondary-color: #28a745;
    --dark-color: #343a40;
    --light-color: #f8f9fa;
    --border-radius: 10px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    color: var(--dark-color);
}

.card {
    border: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.card-header {
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    border-bottom: none;
}

.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.btn-success {
    background: linear-gradient(135deg, #28a745, #1e7e34);
    border: none;
}

.btn-success:hover {
    background: linear-gradient(135deg, #1e7e34, #28a745);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.form-control, .form-select {
    border-radius: 8px;
    border: 2px solid #dee2e6;
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(92, 178, 230, 0.25);
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.form-text {
    font-size: 0.85rem;
    color: #6c757d;
}

.preview-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.alert {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--box-shadow);
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1, #bee5eb);
    border-left: 4px solid #17a2b8;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    border-left: 4px solid #ffc107;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    border-left: 4px solid #28a745;
}

.social-links a {
    transition: var(--transition);
    border-radius: 8px;
}

.social-links a:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.canvas-container {
    position: relative;
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .preview-container {
        padding: 1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

:focus {
    outline: 3px solid rgba(92, 178, 230, 0.5);
    outline-offset: 2px;
}

::selection {
    background-color: rgba(92, 178, 230, 0.3);
    color: var(--dark-color);
}

.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 20px;
    height: 20px;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.swal2-popup {
    border-radius: 15px !important;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
}

.swal2-title {
    font-size: 1.5rem !important;
    font-weight: 600 !important;
    color: var(--dark-color) !important;
}

.swal2-html-container {
    font-size: 1rem !important;
    color: #6c757d !important;
}

.swal2-confirm {
    border-radius: 8px !important;
    padding: 0.75rem 2rem !important;
    font-weight: 600 !important;
    transition: all 0.3s ease !important;
}

.swal2-cancel {
    border-radius: 8px !important;
    padding: 0.75rem 2rem !important;
    font-weight: 600 !important;
    transition: all 0.3s ease !important;
}

.swal2-icon {
    margin-bottom: 1rem !important;
}