/* Image Format Converter Custom Styles */
:root {
    --ifc-primary: #0d6efd;
    --ifc-primary-light: #e8f2ff;
    --ifc-primary-dark: #0a58ca;
    --ifc-secondary: #6c757d;
    --ifc-success: #198754;
    --ifc-warning: #ffc107;
    --ifc-danger: #dc3545;
    --ifc-light: #f8f9fa;
    --ifc-dark: #212529;
    --ifc-card-bg: #ffffff;
    --ifc-border-radius: 16px;
    --ifc-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    --ifc-shadow-hover: 0 20px 40px rgba(15, 23, 42, 0.12);
    --ifc-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Main Container */
.ifc-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 15px;
}

.ifc-app-card {
    background: var(--ifc-card-bg);
    border-radius: var(--ifc-border-radius);
    box-shadow: var(--ifc-shadow);
    border: none;
    overflow: hidden;
    transition: var(--ifc-transition);
}

.ifc-app-card:hover {
    box-shadow: var(--ifc-shadow-hover);
}

/* Header Section */
.ifc-header {
    background: linear-gradient(135deg, var(--ifc-primary) 0%, var(--ifc-primary-dark) 100%);
    color: white;
    padding: 1.5rem 2rem;
    border-radius: var(--ifc-border-radius) var(--ifc-border-radius) 0 0;
}

.ifc-header-title {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.ifc-header-subtitle {
    opacity: 0.85;
    margin-bottom: 0;
}

.ifc-badge-privacy {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
}

/* Body Section */
.ifc-body {
    padding: 2rem;
}

/* Upload Section */
.ifc-upload-section {
    margin-bottom: 2rem;
}

.ifc-control-card {
    background: var(--ifc-light);
    border-radius: 12px;
    padding: 1.5rem;
    height: 100%;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.ifc-control-label {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    color: var(--ifc-dark);
}

.ifc-control-label.required::after {
    content: " *";
    color: var(--ifc-danger);
}

/* Dropzone */
.ifc-dropzone {
    border: 2px dashed rgba(13, 110, 253, 0.2);
    border-radius: 12px;
    background: linear-gradient(180deg, rgba(13, 110, 253, 0.03), rgba(13, 110, 253, 0.01));
    cursor: pointer;
    transition: var(--ifc-transition);
    padding: 2.5rem 1.5rem;
    text-align: center;
}

.ifc-dropzone:hover,
.ifc-dropzone.dragover {
    border-color: var(--ifc-primary);
    background: var(--ifc-primary-light);
    transform: translateY(-2px);
}

.ifc-dropzone-icon {
    font-size: 3.5rem;
    color: var(--ifc-primary);
    margin-bottom: 1rem;
}

.ifc-dropzone-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.ifc-dropzone-subtitle {
    color: var(--ifc-secondary);
    margin-bottom: 1.5rem;
}

/* File Cards */
.ifc-file-grid {
    margin-top: 1.5rem;
}

.ifc-file-card {
    transition: var(--ifc-transition);
    border: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    height: 100%;
}

.ifc-file-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.ifc-preview-img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.ifc-file-info {
    padding: 1rem;
}

.ifc-file-name {
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.25rem;
}

.ifc-file-size {
    font-size: 0.85rem;
    color: var(--ifc-secondary);
    margin-bottom: 0.75rem;
}

.ifc-file-actions {
    padding: 0.75rem;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
}

/* Status Badges */
.ifc-status-badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-weight: 500;
}

.ifc-status-ready {
    background-color: var(--ifc-secondary);
    color: white;
}

.ifc-status-converting {
    background-color: var(--ifc-warning);
    color: var(--ifc-dark);
}

.ifc-status-converted {
    background-color: var(--ifc-success);
    color: white;
}

.ifc-status-error {
    background-color: var(--ifc-danger);
    color: white;
}

/* Form Controls */
.ifc-form-range {
    height: 6px;
}

.ifc-form-range::-webkit-slider-thumb {
    background: var(--ifc-primary);
    width: 18px;
    height: 18px;
}

.ifc-form-range::-moz-range-thumb {
    background: var(--ifc-primary);
    width: 18px;
    height: 18px;
    border: none;
}

.ifc-quality-value {
    font-weight: 600;
    color: var(--ifc-primary);
}

/* Action Buttons */
.ifc-action-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    flex-wrap: wrap;
    margin: 1.5rem 0;
}

.ifc-btn-primary {
    background: linear-gradient(135deg, var(--ifc-primary) 0%, var(--ifc-primary-dark) 100%);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: var(--ifc-transition);
    color: white;
}

.ifc-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(13, 110, 253, 0.3);
    color: white;
}

.ifc-btn-primary:disabled {
    opacity: 0.6;
    transform: none;
    box-shadow: none;
}

.ifc-btn-outline-primary {
    border: 2px solid var(--ifc-primary);
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: var(--ifc-transition);
    color: var(--ifc-primary);
    background: transparent;
}

.ifc-btn-outline-primary:hover {
    background: rgba(13, 110, 253, 0.1);
    transform: translateY(-2px);
    color: var(--ifc-primary);
}

.ifc-btn-outline-secondary {
    border: 2px solid var(--ifc-secondary);
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: var(--ifc-transition);
    color: var(--ifc-secondary);
    background: transparent;
}

.ifc-btn-outline-secondary:hover {
    background: rgba(108, 117, 125, 0.1);
    transform: translateY(-2px);
    color: var(--ifc-secondary);
}

.ifc-btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Button States */
.ifc-btn-hidden {
    display: none !important;
}

.ifc-btn-visible {
    display: inline-flex !important;
    align-items: center;
    gap: 0.5rem;
}

/* Empty State */
.ifc-empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--ifc-secondary);
}

.ifc-empty-state-icon {
    font-size: 4rem;
    color: #dee2e6;
    margin-bottom: 1rem;
}

.ifc-empty-state-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.ifc-empty-state-text {
    color: var(--ifc-secondary);
}

/* Footer Note */
.ifc-footer-note {
    text-align: center;
    color: var(--ifc-secondary);
    font-size: 0.875rem;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #e9ecef;
}

/* Utility Classes */
.ifc-text-muted {
    color: var(--ifc-secondary) !important;
}

.ifc-text-primary {
    color: var(--ifc-primary) !important;
}

.ifc-bg-light {
    background-color: var(--ifc-light) !important;
}

.ifc-rounded {
    border-radius: var(--ifc-border-radius) !important;
}

.ifc-shadow-sm {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08) !important;
}

/* Validation States */
.ifc-invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--ifc-danger);
}

.ifc-is-invalid {
    border-color: var(--ifc-danger) !important;
}

.ifc-is-invalid ~ .ifc-invalid-feedback {
    display: block;
}

/* Responsive Design */
@media (max-width: 768px) {
    .ifc-body {
        padding: 1.5rem;
    }

    .ifc-action-buttons {
        justify-content: center;
    }

    .ifc-action-buttons .btn {
        flex: 1;
        min-width: 120px;
    }

    .ifc-preview-img {
        height: 140px;
    }

    .ifc-header {
        padding: 1.25rem 1.5rem;
    }
}

@media (max-width: 576px) {
    .ifc-body {
        padding: 1.25rem;
    }

    .ifc-dropzone {
        padding: 1.5rem 1rem;
    }

    .ifc-preview-img {
        height: 120px;
    }

    .ifc-control-card {
        padding: 1rem;
    }
}

/* Loading States */
.ifc-loading {
    position: relative;
    overflow: hidden;
}

.ifc-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: ifc-loading 1.5s infinite;
}

@keyframes ifc-loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Progress Indicator */
.ifc-progress {
    height: 8px;
    border-radius: 4px;
    background-color: #e9ecef;
    overflow: hidden;
}

.ifc-progress-bar {
    height: 100%;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--ifc-primary), var(--ifc-primary-dark));
    transition: width 0.3s ease;
}

/* Tooltip Customization */
.ifc-tooltip .tooltip-inner {
    background-color: var(--ifc-dark);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

.ifc-tooltip .tooltip-arrow {
    display: none;
}