/* ========================================
   CONVERTER PAGE STYLES
   ======================================== */

/* Main Converter Container */
.converter-main {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: var(--spacing-xl) 0;
    position: relative;
}

.converter-main::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Header Section */
.converter-header {
    text-align: center;
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
}

.page-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.page-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

/* Converter Types Section */
.converter-types-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
    position: relative;
    z-index: 1;
}

.converter-types-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.converter-types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.converter-type-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--border-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: block;
}

.converter-type-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent-primary-alpha) 0%, var(--accent-secondary-alpha) 100%);
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.converter-type-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-primary);
}

.converter-type-card:hover::before {
    opacity: 0.1;
}

.type-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-lg);
    color: var(--accent-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 2;
}

.converter-type-card:hover .type-icon {
    transform: scale(1.1);
    color: var(--accent-secondary);
}

.type-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.type-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 2;
}

.type-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 2;
}

.type-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    position: relative;
    z-index: 2;
}

.feature-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border-primary);
    transition: var(--transition-fast);
}

.converter-type-card:hover .feature-tag {
    background: var(--accent-primary-alpha);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* Converter Section */
.converter-section {
    position: relative;
    z-index: 1;
    margin-bottom: var(--spacing-3xl);
}

.converter-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-primary);
    backdrop-filter: blur(20px);
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
    transform: translateY(-2px);
}

.upload-area.dragover {
    border-color: var(--accent-primary);
    background: var(--accent-primary-alpha);
    transform: scale(1.02);
}

.upload-content {
    position: relative;
    z-index: 2;
}

.upload-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    color: var(--accent-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.upload-area:hover .upload-icon {
    transform: scale(1.1);
    color: var(--accent-secondary);
}

.upload-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.upload-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.upload-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    font-size: 1rem;
}

#fileInput {
    display: none;
}

.upload-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Format Selection */
.format-selection {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--border-primary);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.format-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.format-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.format-option:hover {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.format-option.selected {
    border-color: var(--accent-primary);
    background: var(--accent-primary-alpha);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.format-option.selected::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent-primary-alpha) 0%, var(--accent-secondary-alpha) 100%);
    z-index: 1;
}

.format-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    color: var(--accent-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 2;
}

.format-option:hover .format-icon {
    transform: scale(1.1);
    color: var(--accent-secondary);
}

.format-option.selected .format-icon {
    color: var(--accent-primary);
    transform: scale(1.05);
}

.format-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.format-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
    position: relative;
    z-index: 2;
}

/* Convert Section */
.convert-section {
    margin-top: var(--spacing-2xl);
    text-align: center;
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--border-primary);
}

.convert-btn {
    padding: var(--spacing-lg) var(--spacing-3xl);
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: var(--radius-xl);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    min-width: 200px;
}

.convert-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.convert-btn:active {
    transform: translateY(-1px);
}

/* Progress Section */
.progress-section {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--border-primary);
}

.progress-container {
    text-align: center;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    border-radius: var(--radius-full);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
    animation: progress-shimmer 2s infinite;
}

@keyframes progress-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-text {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1rem;
}

/* Results Section */
.results-section {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--border-primary);
}

.results-container {
    text-align: center;
}

.results-list {
    display: grid;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.result-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.result-item:hover {
    background: var(--bg-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.result-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.result-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-primary);
}

.result-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.result-details h4 {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.result-details p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.download-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.results-actions {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-top: var(--spacing-xl);
}

/* Features Section */
.features-section {
    position: relative;
    z-index: 1;
    margin-top: var(--spacing-3xl);
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-primary);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent-primary-alpha) 0%, var(--accent-secondary-alpha) 100%);
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover::before {
    opacity: 0.05;
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    color: var(--accent-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 2;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    color: var(--accent-secondary);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 2;
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
    position: relative;
    z-index: 2;
}

/* Responsive Design */
@media (max-width: 768px) {
    .converter-main {
        padding: var(--spacing-lg) 0;
    }
    
    .converter-header {
        padding: var(--spacing-2xl) 0 var(--spacing-xl);
    }
    
    .converter-types-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .converter-type-card {
        padding: var(--spacing-xl);
    }
    
    .type-icon {
        width: 56px;
        height: 56px;
    }
    
    .type-title {
        font-size: 1.25rem;
    }
    
    .converter-container {
        margin: 0 var(--spacing-md);
        padding: var(--spacing-lg);
    }
    
    .upload-area {
        padding: var(--spacing-xl);
    }
    
    .upload-icon {
        width: 60px;
        height: 60px;
    }
    
    .format-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: var(--spacing-md);
    }
    
    .format-option {
        padding: var(--spacing-lg);
    }
    
    .format-icon {
        width: 40px;
        height: 40px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .results-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .result-item {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .converter-header {
        padding: var(--spacing-xl) 0;
    }
    
    .converter-types-section {
        padding: var(--spacing-2xl) 0;
    }
    
    .converter-types-container {
        padding: 0 var(--spacing-md);
    }
    
    .converter-type-card {
        padding: var(--spacing-lg);
    }
    
    .type-icon {
        width: 48px;
        height: 48px;
    }
    
    .type-title {
        font-size: 1.125rem;
    }
    
    .type-description {
        font-size: 0.875rem;
    }
    
    .converter-container {
        margin: 0 var(--spacing-sm);
        padding: var(--spacing-md);
    }
    
    .upload-area {
        padding: var(--spacing-lg);
    }
    
    .format-grid {
        grid-template-columns: 1fr;
    }
    
    .convert-btn {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
    }
}

/* Dark Theme Adjustments */
[data-theme="dark"] .converter-main::before {
    background: radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.05) 0%, transparent 50%);
}

[data-theme="dark"] .upload-area.dragover {
    background: var(--accent-primary-alpha);
}

[data-theme="dark"] .format-option.selected {
    background: var(--accent-primary-alpha);
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-up {
    animation: slideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border-primary);
    border-top: 2px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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