:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: 2rem 1rem;
}

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

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-info {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.badge {
    padding: 0.375rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.badge:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

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

.hidden {
    display: none !important;
}

/* Upload Card */
.upload-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.upload-area.drag-over {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
    transform: scale(1.02);
}

.upload-icon {
    color: var(--text-tertiary);
    margin-bottom: 1rem;
    transition: var(--transition);
}

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

.upload-area h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.upload-area p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.supported-formats {
    font-size: 0.875rem !important;
    color: var(--text-tertiary) !important;
    margin-top: 1rem;
}

/* File Preview */
.file-preview {
    animation: fadeIn 0.3s ease-in;
}

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

.file-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.file-icon {
    font-size: 2.5rem;
}

.file-details h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    word-break: break-all;
}

.file-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.hash-preview {
    margin-bottom: 1.5rem;
}

.hash-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.hash-item label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.hash-item code {
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    word-break: break-all;
}

/* Buttons */
.btn-primary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

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

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.btn-reset {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 1rem 2rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 2rem;
}

.btn-reset:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Info Cards */
.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.info-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.info-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.info-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.info-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Progress Section */
.progress-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.progress-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
}

.progress-steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.progress-step {
    display: flex;
    gap: 1rem;
    opacity: 0.4;
    transition: var(--transition);
}

.progress-step.active {
    opacity: 1;
}

.progress-step.completed {
    opacity: 0.7;
}

.step-icon {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-tertiary);
    transition: var(--transition);
}

.progress-step.active .step-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-color: var(--primary-color);
    color: white;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

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

.step-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 999px;
    transition: width 0.5s ease;
    width: 0%;
}

/* Results Section */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.results-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
}

.export-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
    overflow-x: auto;
    padding-bottom: 0;
}

.tab {
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    margin-bottom: -2px;
}

.tab:hover {
    color: var(--primary-color);
}

.tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.tab-content.active {
    display: block;
}

/* Overview */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.overview-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.overview-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.info-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.info-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.info-value {
    font-size: 0.875rem;
    color: var(--text-primary);
    text-align: right;
    word-break: break-all;
    font-family: 'Courier New', monospace;
}

/* AI Summary */
.ai-summary-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.threat-level {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
}

.threat-level.low {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
    border: 2px solid var(--success-color);
}

.threat-level.medium {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.05));
    border: 2px solid var(--warning-color);
}

.threat-level.high {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.05));
    border: 2px solid var(--danger-color);
}

.threat-badge {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.threat-level.low .threat-badge {
    background: var(--success-color);
}

.threat-level.medium .threat-badge {
    background: var(--warning-color);
}

.threat-level.high .threat-badge {
    background: var(--danger-color);
}

.threat-level h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.ai-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.ai-section {
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.ai-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.ai-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ai-section li {
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.ai-section li::before {
    content: "•";
    position: absolute;
    left: 0.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

/* Static Analysis */
.static-analysis-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.analysis-section {
    margin-bottom: 2rem;
}

.analysis-section:last-child {
    margin-bottom: 0;
}

.analysis-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.analysis-table {
    width: 100%;
    border-collapse: collapse;
}

.analysis-table th,
.analysis-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}

.analysis-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-secondary);
}

.analysis-table td {
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
}

/* Strings */
.strings-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.strings-filter {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.strings-filter input,
.strings-filter select {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-family: inherit;
    transition: var(--transition);
}

.strings-filter input:focus,
.strings-filter select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.strings-list {
    max-height: 500px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.string-item {
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    word-break: break-all;
}

.string-item.suspicious {
    background: rgba(239, 68, 68, 0.1);
    border-left: 3px solid var(--danger-color);
}

/* Entropy */
.entropy-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

#entropy-chart {
    width: 100%;
    height: 300px;
    margin-bottom: 1.5rem;
}

.entropy-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.entropy-stat {
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    text-align: center;
}

.entropy-stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.entropy-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* YARA */
.yara-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.yara-match {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    border-left: 4px solid var(--danger-color);
}

.yara-match:last-child {
    margin-bottom: 0;
}

.yara-match h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--danger-color);
    margin-bottom: 0.5rem;
}

.yara-match p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.yara-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.yara-tag {
    padding: 0.25rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.no-matches {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.no-matches svg {
    width: 64px;
    height: 64px;
    color: var(--text-tertiary);
    margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 1rem 0.5rem;
    }

    .header {
        flex-direction: column;
        align-items: flex-start;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .upload-card {
        padding: 1.5rem;
    }

    .upload-area {
        padding: 2rem 1rem;
    }

    .tabs {
        gap: 0.25rem;
    }

    .tab {
        padding: 0.625rem 1rem;
        font-size: 0.8125rem;
    }

    .overview-grid {
        grid-template-columns: 1fr;
    }

    .info-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .info-value {
        text-align: left;
    }

    .strings-filter {
        flex-direction: column;
    }

    .strings-filter input,
    .strings-filter select {
        min-width: 100%;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}