:root {
    --primary-color: #4A90E2;
    --secondary-color: #50E3C2;
    --background-color: #F8F9FA;
    --surface-color: #FFFFFF;
    --text-color: #333333;
    --border-radius: 0.5rem;
}

body {
    font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
}

.navbar-brand {
    color: var(--primary-color) !important;
}

.hero-section {
    padding: 3rem 0;
}

.hero-section .display-4 {
    color: var(--text-color);
}

.content-card {
    border: none;
    border-radius: var(--border-radius);
}

.step-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    font-weight: bold;
    font-size: 0.8rem;
    margin-right: 0.5rem;
}

#image-uploader #upload-ui {
    border: 2px dashed #dee2e6;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.2s ease-in-out, border-color 0.2s ease-in-out;
}

#image-uploader #upload-ui:hover {
    background-color: #f1f3f5;
    border-color: var(--primary-color);
}

#image-preview {
    border: 1px solid #dee2e6;
}

#generation-controls {
    opacity: 0.6;
}

.generate-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border: none;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(74, 144, 226, 0.25);
}