/* DPI Checker Tool Styles - Professional Design */

/* CSS Variables */
:root {
    /* Color Variables - Professional Theme */
    --color-primary: #3b82f6;
    --color-primary-dark: #1e40af;
    --color-primary-light: #60a5fa;
    --color-secondary: #64748b;
    --color-success: #10b981;
    --color-success-dark: #059669;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #0ea5e9;
    
    /* Gray Scale */
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    --color-white: #ffffff;
    
    /* Success/Warning/Error variations */
    --color-success-50: #ecfdf5;
    --color-success-100: #d1fae5;
    --color-success-800: #065f46;
    --color-warning-50: #fffbeb;
    --color-warning-100: #fef3c7;
    --color-warning-800: #92400e;
    --color-error-50: #fef2f2;
    --color-error-100: #fee2e2;
    --color-error-800: #991b1b;
    --color-orange-100: #fed7aa;
    --color-orange-800: #9a3412;
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;

    /* Spacing Variables */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.12);
    --shadow-focus: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Global Styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background-color: var(--color-gray-50);
    color: var(--color-gray-800);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* Breadcrumb - Matching expense-tracker style */
.breadcrumb {
    background: var(--color-gray-50);
    padding: 1rem 2rem;
    margin-bottom: 2rem;
    border-left: 4px solid var(--color-primary);
    font-size: 0.9rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}

.breadcrumb a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.breadcrumb-separator {
    margin: 0 0.5rem;
    color: var(--color-gray-500);
    font-weight: bold;
}

.breadcrumb span:last-child {
    color: var(--color-gray-800);
    font-weight: 500;
}

/* Main Content Layout */
.main-content {
    padding: var(--space-2xl) 0;
    min-height: calc(100vh - 200px);
    background: var(--color-gray-50);
}

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

/* Professional Card Design */
.tool-section {
    margin-bottom: var(--space-2xl);
}

.tool-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    margin-bottom: var(--space-2xl);
}

/* Centered Layout Styles */
.tool-content-wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 2rem;
    text-align: center;
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-gray-800);
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
}

.main-subtitle {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--color-gray-600);
    margin-bottom: 2.5rem;
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.subtitle-icon {
    color: var(--color-primary);
    margin-right: 0.5rem;
}

/* Upload Area - Centered Design */
.upload-area-centered {
    border: 3px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-gray-100) 100%);
    margin-bottom: 3rem;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-area-centered:hover {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-primary-100) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.upload-area-centered.drag-over {
    border-color: var(--color-primary);
    background: var(--color-primary-100);
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.upload-content-centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    position: relative;
    z-index: 1;
}

.upload-icon-large {
    font-size: 4rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
    animation: bounce 2s infinite;
}

.upload-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin: 0;
}

.upload-description {
    color: var(--color-gray-500);
    margin: 0;
    font-size: 1rem;
}

/* Professional Button Design */
.upload-btn-main {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    margin-top: 1rem;
    position: relative;
    overflow: hidden;
}

.upload-btn-main::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.upload-btn-main:hover::before {
    left: 100%;
}

.upload-btn-main:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

/* Helper Tip */
.helper-tip {
    background: var(--color-primary-50);
    border: 1px solid var(--color-primary-100);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.tip-text {
    color: var(--color-primary-dark);
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
}

.tip-icon {
    margin-right: 0.5rem;
}

.btn {
    padding: var(--space-md) var(--space-xl);
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

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

.btn-secondary {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-300);
}

.btn-secondary:hover {
    background: var(--color-gray-200);
    border-color: var(--color-gray-400);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* Responsive Design - Enhanced */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-lg);
    }
    
    .tool-content-wrapper {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 768px) {
    .main-title {
        font-size: 2rem;
    }
    
    .main-subtitle {
        font-size: 1.2rem;
        margin-bottom: 2rem;
    }
    
    .tool-content-wrapper {
        padding: 2rem 1rem;
    }
    
    .upload-area-centered {
        padding: 2rem 1.5rem;
    }
    
    .upload-icon-large {
        font-size: 3rem;
    }
    
    .upload-title {
        font-size: 1.3rem;
    }
    
    .upload-description {
        font-size: 0.9rem;
    }
    
    .upload-btn-main {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
    
    /* Enhanced Results Section Mobile Styles */
    .results-header {
        padding: var(--space-lg);
    }
    
    .results-header h3 {
        font-size: 1.4rem;
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .results-header h3 i {
        font-size: 1.2rem;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        padding: var(--space-lg);
    }
    
    .result-card {
        padding: var(--space-lg);
        margin-bottom: var(--space-md);
    }
    
    .result-card h4 {
        font-size: 1.1rem;
        flex-wrap: wrap;
        text-align: center;
        justify-content: center;
        margin-bottom: var(--space-md);
        line-height: 1.3;
        word-break: break-word;
        -webkit-hyphens: auto;
        hyphens: auto;
    }
    
    .result-card h4 i {
        margin-bottom: var(--space-xs);
        flex-shrink: 0;
    }
    
    .preview-container {
        min-height: 180px;
    }
    
    .preview-image {
        max-height: 160px;
    }
    
    .info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
        text-align: left;
    }
    
    .info-label {
        font-size: 0.9rem;
        width: 100%;
    }
    
    .info-value {
        font-size: 1rem;
        width: 100%;
        text-align: center;
        padding: var(--space-sm);
    }
    
    .dpi-value {
        font-size: 1.1rem;
        font-weight: 700;
    }
    
    .quality-badge {
        font-size: 1rem;
        padding: var(--space-sm) var(--space-lg);
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .quality-description {
        font-size: 0.95rem;
        text-align: left;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-md);
        padding: var(--space-lg);
    }
    
    .action-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* Show shorter card titles on tablets */
    .card-title-full {
        display: none;
    }
    
    .card-title-short {
        display: inline;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .main-title {
        font-size: 1.8rem;
        line-height: 1.3;
    }
    
    .main-subtitle {
        font-size: 1.1rem;
        line-height: 1.4;
    }
    
    .tool-content-wrapper {
        padding: 1.5rem 0.5rem;
    }
    
    .upload-area-centered {
        padding: 1.5rem 1rem;
    }
    
    .upload-icon-large {
        font-size: 2.5rem;
    }
    
    .upload-title {
        font-size: 1.2rem;
    }
    
    .upload-btn-main {
        padding: 0.7rem 1.2rem;
        font-size: 0.95rem;
    }
    
    .helper-tip {
        padding: 1rem;
    }
    
    .tip-text {
        font-size: 0.9rem;
    }
    
    /* Enhanced Small Mobile Results */
    .results-header {
        padding: var(--space-md);
    }
    
    .results-header h3 {
        font-size: 1.2rem;
        line-height: 1.3;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
        padding: var(--space-md);
    }
    
    .result-card {
        padding: var(--space-md);
        border-radius: var(--radius-md);
        overflow-wrap: break-word;
        word-wrap: break-word;
    }
    
    .result-card h4 {
        font-size: 1.1rem;
        margin-bottom: var(--space-sm);
        line-height: 1.2;
        word-break: break-word;
        -webkit-hyphens: auto;
        hyphens: auto;
        flex-direction: column;
        align-items: center;
        gap: var(--space-xs);
    }
    
    .result-card h4 i {
        font-size: 1rem;
        order: -1;
    }
    
    .preview-container {
        min-height: 150px;
        border-radius: var(--radius-sm);
    }
    
    .preview-image {
        max-height: 130px;
    }
    
    .preview-placeholder {
        font-size: 0.9rem;
    }
    
    .preview-placeholder i {
        font-size: 2.5rem;
        margin-bottom: var(--space-sm);
    }
    
    .info-item {
        padding: var(--space-sm);
        border-radius: var(--radius-sm);
    }
    
    .info-label {
        font-size: 0.85rem;
        font-weight: 600;
    }
    
    .info-value {
        font-size: 0.9rem;
        padding: var(--space-xs) var(--space-sm);
    }
    
    .dpi-value {
        font-size: 1rem;
        font-weight: 700;
    }
    
    .quality-indicator {
        padding: var(--space-md);
    }
    
    .quality-badge {
        font-size: 0.9rem;
        padding: var(--space-xs) var(--space-md);
        margin-bottom: var(--space-sm);
    }
    
    .quality-description {
        font-size: 0.85rem;
        padding: var(--space-sm);
        line-height: 1.5;
    }
    
    .action-buttons {
        padding: var(--space-md);
        gap: var(--space-sm);
    }
    
    .action-buttons .btn {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.9rem;
        border-radius: var(--radius-sm);
    }
    
    /* Keep shorter card titles on small mobile */
    .card-title-full {
        display: none;
    }
    
    .card-title-short {
        display: inline;
    }
}

/* Extra Small Mobile Devices */
@media (max-width: 360px) {
    .tool-content-wrapper {
        padding: 1rem 0.25rem;
    }
    
    .main-title {
        font-size: 1.6rem;
    }
    
    .main-subtitle {
        font-size: 1rem;
    }
    
    .upload-area-centered {
        padding: 1rem 0.5rem;
    }
    
    .upload-title {
        font-size: 1.1rem;
    }
    
    .upload-description {
        font-size: 0.85rem;
    }
    
    .results-header h3 {
        font-size: 1.1rem;
    }
    
    .result-card {
        padding: var(--space-sm);
        margin-bottom: var(--space-xs);
        overflow-wrap: break-word;
        word-wrap: break-word;
    }
    
    .result-card h4 {
        font-size: 1rem;
        line-height: 1.2;
        margin-bottom: var(--space-xs);
        word-break: break-word;
        -webkit-hyphens: auto;
        hyphens: auto;
        flex-direction: column;
        text-align: center;
        gap: 2px;
    }
    
    .result-card h4 i {
        font-size: 0.9rem;
        margin-bottom: 2px;
    }
    
    .info-label {
        font-size: 0.8rem;
    }
    
    .info-value {
        font-size: 0.85rem;
    }
    
    .quality-badge {
        font-size: 0.85rem;
        padding: var(--space-xs) var(--space-sm);
    }
    
    .quality-description {
        font-size: 0.8rem;
    }
    
    /* Better mobile card header layout */
    .result-card h4 {
        flex-direction: column;
        align-items: center;
        text-align: center;
        white-space: normal;
        overflow-wrap: break-word;
        word-wrap: break-word;
    }
    
    .result-card h4 i {
        margin-bottom: var(--space-xs);
        margin-right: 0;
    }
    
    /* Extra short titles for very small screens */
    .card-title-full {
        display: none;
    }
    
    .card-title-short {
        display: inline;
    }
}

/* Focus Styles for Accessibility */
.upload-btn-main:focus,
.upload-area-centered:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* Error State Styles */
.error-state {
    background: var(--color-error-50);
    border-color: var(--color-error);
    color: var(--color-error-800);
}

.error-message {
    background: var(--color-error-100);
    color: var(--color-error-800);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-error);
    margin: var(--space-md) 0;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.error-message i {
    color: var(--color-error);
    font-size: 1.1rem;
}

/* Success Message */
.success-message {
    background: var(--color-success-100);
    color: var(--color-success-800);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-success);
    margin: var(--space-md) 0;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.success-message i {
    color: var(--color-success);
    font-size: 1.1rem;
}

/* Results Section - Professional Design */
.results-section {
    margin-top: var(--space-2xl);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    max-width: 100%;
    width: 100%;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative;
    z-index: 1;
}

.results-section.hidden {
    display: none !important;
}

/* Card Title Responsive Display */
.card-title-short {
    display: none;
}

.card-title-full {
    display: inline;
}

.results-header {
    background: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-dark) 100%);
    color: var(--color-white);
    padding: var(--space-xl);
    text-align: center;
    position: relative;
}

.results-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="8" height="8" patternUnits="userSpaceOnUse"><path d="M 8 0 L 0 0 0 8" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.results-header * {
    position: relative;
    z-index: 1;
}

.results-header h3 {
    font-size: 1.6rem;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.results-header h3 i {
    font-size: 1.4rem;
}

/* Results Grid - Enhanced Layout */
.results-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    padding: var(--space-2xl);
    max-width: 100%;
    width: 100%;
    min-height: 200px;
}

.result-card {
    background: var(--color-white) !important;
    border: 2px solid var(--color-gray-100);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: block !important;
    visibility: visible !important;
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
}

.result-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.result-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.result-card h4 i {
    color: var(--color-primary);
    font-size: 1.2rem;
}

/* File Preview - Enhanced */
.preview-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 220px;
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-gray-100) 100%);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-gray-200);
    position: relative;
    overflow: hidden;
}

.preview-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255,255,255,0.1) 10px,
        rgba(255,255,255,0.1) 20px
    );
}

.preview-image {
    max-width: 100%;
    max-height: 200px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}

.preview-placeholder {
    color: var(--color-gray-500);
    font-size: 1rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

.preview-placeholder i {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    display: block;
    color: var(--color-gray-400);
}

/* Info List - Professional Style */
.info-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s ease;
}

.info-item:hover {
    background: var(--color-primary-50);
    border-color: var(--color-primary-light);
    transform: translateX(4px);
}

.info-label {
    font-weight: 600;
    color: var(--color-gray-700);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.info-label::before {
    content: '●';
    color: var(--color-primary);
    font-size: 0.8rem;
}

.info-value {
    font-weight: 600;
    color: var(--color-gray-900);
    background: var(--color-white);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-gray-200);
}

.dpi-value {
    font-size: 1.2rem;
    color: var(--color-primary);
    background: var(--color-primary-50);
    border-color: var(--color-primary-light);
}

/* Quality Assessment - Enhanced Design */
.quality-indicator {
    text-align: center;
    padding: var(--space-lg);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.quality-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.quality-badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.8s ease;
}

.quality-badge:hover::before {
    left: 100%;
}

.quality-badge.excellent {
    background: linear-gradient(135deg, var(--color-success) 0%, var(--color-success-dark) 100%);
    color: var(--color-white);
}

.quality-badge.good {
    background: linear-gradient(135deg, var(--color-warning) 0%, #e19c00 100%);
    color: var(--color-white);
}

.quality-badge.fair {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    color: var(--color-white);
}

.quality-badge.poor {
    background: linear-gradient(135deg, var(--color-error) 0%, #dc2626 100%);
    color: var(--color-white);
}

.quality-badge.screenshot {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

.quality-description {
    color: var(--color-gray-600);
    font-size: 1rem;
    line-height: 1.6;
    background: var(--color-white);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
}

/* Action Buttons - Professional Style */
.action-buttons {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
    padding: var(--space-xl);
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
}

/* How to Use Section - Enhanced Design */
.how-to-section {
    margin-bottom: var(--space-2xl);
}

.how-to-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
}

.how-to-header {
    background: linear-gradient(135deg, var(--color-info) 0%, #0284c7 100%);
    color: var(--color-white);
    padding: var(--space-2xl);
    text-align: center;
    position: relative;
}

.how-to-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    opacity: 0.3;
}

.how-to-header * {
    position: relative;
    z-index: 1;
}

.how-to-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.steps-container {
    padding: var(--space-2xl);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.step-card {
    text-align: center;
    padding: var(--space-xl);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-gray-100) 100%);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-gray-200);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.step-card:hover::before {
    transform: scaleX(1);
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
    background: var(--color-white);
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    margin: 0 auto var(--space-lg);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.step-number::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s ease;
}

.step-card:hover .step-number::before {
    left: 100%;
}

.step-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--space-md);
}

.step-card p {
    color: var(--color-gray-600);
    line-height: 1.6;
    font-size: 1rem;
}

/* Related Tools Section - Enhanced Grid */
.related-tools-section {
    margin-bottom: var(--space-2xl);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.section-header h2 i {
    color: var(--color-primary);
}

.section-header p {
    color: var(--color-gray-600);
    font-size: 1.2rem;
    margin: 0;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.tool-link-card {
    display: block;
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.tool-link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tool-link-card:hover::before {
    transform: scaleX(1);
}

.tool-link-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.tool-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary-100) 0%, var(--color-primary-200) 100%);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: var(--space-lg);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.tool-link-card:hover .tool-icon {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    transform: scale(1.1);
}

.tool-link-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--space-sm);
    transition: color 0.3s ease;
}

.tool-link-card:hover h3 {
    color: var(--color-primary);
}

.tool-link-card p {
    color: var(--color-gray-600);
    line-height: 1.6;
    margin: 0;
    font-size: 1rem;
}

/* Info Section - Professional Design */
.info-section {
    margin-bottom: var(--space-2xl);
}

.info-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
}

.info-header {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-gray-700) 100%);
    color: var(--color-white);
    padding: var(--space-2xl);
    text-align: center;
    position: relative;
}

.info-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="hexagon" width="28" height="24" patternUnits="userSpaceOnUse"><polygon points="14,2 26,8 26,16 14,22 2,16 2,8" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23hexagon)"/></svg>');
    opacity: 0.3;
}

.info-header * {
    position: relative;
    z-index: 1;
}

.info-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.info-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-2xl);
    padding: var(--space-2xl);
}

.info-column {
    background: var(--color-gray-50);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
}

.info-column h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.info-column h3::before {
    content: '▶';
    color: var(--color-primary);
    font-size: 1rem;
}

.info-column h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin: var(--space-xl) 0 var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-primary-100);
}

.info-column p {
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    font-size: 1rem;
}

.info-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.info-column li {
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-md);
    padding: var(--space-md);
    background: var(--color-white);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-success);
    position: relative;
    transition: all 0.3s ease;
}

.info-column li:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-sm);
}

.info-column li strong {
    color: var(--color-gray-800);
    font-weight: 600;
}

/* Loading Animation - Enhanced */
.loading {
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid var(--color-gray-300);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 10;
}

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

/* Dark Mode Support */
.dark-mode {
    --color-gray-50: #1a1a1a;
    --color-gray-100: #2d2d2d;
    --color-gray-200: #404040;
    --color-white: #1a1a1a;
    --color-gray-800: #e5e5e5;
    --color-gray-900: #ffffff;
}

.dark-mode .tool-card,
.dark-mode .result-card,
.dark-mode .how-to-card,
.dark-mode .info-card {
    background: var(--color-gray-200);
    border-color: var(--color-gray-400);
}

.dark-mode .upload-area {
    background: var(--color-gray-200);
    border-color: var(--color-gray-400);
}

/* Responsive Design - Enhanced */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-lg);
    }
    
    .results-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .tools-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }
    
    .page-description {
        font-size: 1.1rem;
    }
    
    .card-header {
        padding: var(--space-xl);
    }
    
    .card-body {
        padding: var(--space-xl);
    }
    
    .upload-area {
        padding: var(--space-xl);
    }
    
    .upload-icon {
        font-size: 3rem;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .info-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .step-number {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }
    
    .tool-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .page-title {
        font-size: 1.8rem;
    }
    
    .card-header {
        padding: var(--space-lg);
    }
    
    .card-body {
        padding: var(--space-lg);
    }
    
    .upload-area {
        padding: var(--space-lg);
    }
    
    .upload-icon {
        font-size: 2.5rem;
    }
    
    .upload-content h3 {
        font-size: 1.2rem;
    }
    
    .result-card {
        padding: var(--space-lg);
    }
    
    .step-card {
        padding: var(--space-lg);
    }
    
    .tool-link-card {
        padding: var(--space-lg);
    }
    
    .info-column {
        padding: var(--space-lg);
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .tool-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .btn {
        padding: var(--space-sm) var(--space-lg);
        font-size: 1rem;
    }
}

/* Print Styles */
@media print {
    .upload-area,
    .action-buttons,
    .related-tools-section,
    .how-to-section {
        display: none;
    }
    
    .results-section {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .result-card {
        border: 1px solid #ddd;
        break-inside: avoid;
    }
    
    .page-title {
        color: #000;
    }
    
    .card-header {
        background: #f5f5f5 !important;
        color: #000 !important;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .tool-card,
    .result-card,
    .how-to-card,
    .info-card {
        border: 2px solid #000;
    }
    
    .btn-primary {
        background: #000;
        color: #fff;
        border: 2px solid #000;
    }
    
    .btn-secondary {
        background: #fff;
        color: #000;
        border: 2px solid #000;
    }
}

/* Focus Styles for Accessibility */
.btn:focus,
.upload-area:focus,
input:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
}

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

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

/* Additional Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

.slide-up {
    animation: slideUp 0.5s ease-out;
}

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

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