:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-light: #f8fafc;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-light: #1f2937;
        --text-dark: #f3f4f6;
        --text-light: #d1d5db;
        --border-color: #374151;
    }
    
    body {
        background-color: #111827;
        color: #f3f4f6;
    }
    
    .bg-white {
        background-color: #1f2937 !important;
    }
    
    .text-gray-900, .text-gray-700, .text-gray-500 {
        color: #f3f4f6 !important;
    }
    
    .border-gray-200, .border-gray-300 {
        border-color: #374151 !important;
    }
    
    .bg-gray-50 {
        background-color: #374151 !important;
    }
    
    .form-input, .form-textarea, .form-select {
        background-color: #374151 !important;
        border-color: #4b5563 !important;
        color: #f3f4f6 !important;
    }
    
    .form-input:focus, .form-textarea:focus, .form-select:focus {
        border-color: #3b82f6 !important;
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2) !important;
    }
    
    .file-upload-label {
        background-color: #374151 !important;
        border-color: #4b5563 !important;
        color: #f3f4f6 !important;
    }
    
    .file-upload-label:hover {
        background-color: #4b5563 !important;
    }
    
    .radio-item, .checkbox-item {
        background-color: #374151 !important;
        border-color: #4b5563 !important;
    }
    
    .radio-item:hover, .checkbox-item:hover {
        background-color: #4b5563 !important;
    }
    
    .section-header {
        border-bottom-color: #4b5563 !important;
    }
}

.required-field::after {
    content: " *";
    color: #ef4444;
}

.input-hint {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 0.25rem;
}

.form-section {
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    border-radius: 0.75rem;
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.radio-item, .checkbox-item {
    display: flex;
    align-items: flex-start;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.radio-item:hover, .checkbox-item:hover {
    border-color: var(--primary-color);
    background-color: #f8fafc;
}

.radio-item input:checked ~ div span:first-child,
.checkbox-item input:checked ~ div span:first-child {
    color: var(--primary-color);
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 0.75rem;
}

.progress-bar {
    height: 0.5rem;
    background: #e5e7eb;
    border-radius: 0.25rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    transition: width 0.5s ease;
    background: var(--primary-color);
    border-radius: 0.25rem;
}

/* Progress Steps */
.progress-steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    position: relative;
}

.progress-steps::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: #e5e7eb;
    transform: translateY(-50%);
    z-index: 1;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #e5e7eb;
    color: #6b7280;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.step-label {
    font-size: 0.75rem;
    color: #6b7280;
    text-align: center;
    transition: all 0.3s ease;
}

.progress-step.active .step-number {
    background: var(--primary-color);
    color: white;
}

.progress-step.active .step-label {
    color: var(--primary-color);
    font-weight: 500;
}

.progress-step.completed .step-number {
    background: var(--success-color);
    color: white;
}

.progress-step.completed .step-number::after {
    content: '✓';
}

.progress-bar-container {
    margin-top: 1rem;
}

/* Form Steps */
.form-step {
    display: none;
    animation: fadeIn 0.5s ease;
}

.form-step.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .checkbox-group {
        grid-template-columns: 1fr;
    }

    .radio-item, .checkbox-item {
        padding: 0.875rem;
    }

    .form-section {
        padding: 1.25rem;
        margin-bottom: 1.5rem;
    }

    .sticky-tabs {
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 0.5rem;
    }

    .sticky-tabs button {
        font-size: 0.875rem;
        padding: 0.625rem 1rem;
        margin-right: 0.5rem;
    }

    .form-actions {
        flex-direction: column;
        gap: 1rem;
    }

    .form-actions .flex {
        width: 100%;
        justify-content: space-between;
    }
    
    /* Mobile-friendly font sizes */
    body {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .form-input, .form-textarea, .form-select {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.875rem;
    }
    
    button, .btn {
        min-height: 44px; /* Touch-friendly button size */
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .progress-steps {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .progress-step {
        flex: 1;
        min-width: 60px;
    }
    
    .step-label {
        font-size: 0.7rem;
    }
}

/* Enhanced form elements */
.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    background: white;
    min-height: 120px;
    resize: vertical;
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    background: white;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.file-upload-label {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-upload-label:hover {
    border-color: var(--primary-color);
    background: #f8fafc;
}

.image-preview {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.image-preview img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.section-header i {
    margin-right: 0.5rem;
    color: var(--primary-color);
    font-size: 1.25rem;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
}

.benefit-checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.benefit-detail {
    margin-top: 1rem;
    padding: 1rem;
    background: #f8fafc;
    border-radius: 0.5rem;
    border-left: 4px solid var(--primary-color);
}

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

.language-standard {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.language-card {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background: #f8fafc;
}

.language-card h4 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

/* Review Step Styles */
.review-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background: #f8fafc;
}

.review-section h3 {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--primary-color);
}

.review-item {
    display: flex;
    margin-bottom: 0.75rem;
}

.review-label {
    font-weight: 600;
    min-width: 150px;
    color: var(--text-dark);
}

.review-value {
    flex: 1;
    color: var(--text-light);
}

.review-value ul {
    list-style-type: disc;
    padding-left: 1.5rem;
}

/* Step Navigation */
.form-navigation {
    position: sticky;
    bottom: 0;
    background: white;
    z-index: 10;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

/* Validation Styles */
.is-invalid {
    border-color: var(--error-color) !important;
}

.invalid-feedback {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Loading State */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}