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

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: linear-gradient(180deg, #3d1e6d 0%, #5b4a99 50%, #6b7db8 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Header */
.header {
    position: relative;
    z-index: 10;
    background: #fff;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 250px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.logo-text h1 {
    color: #5b9bd5;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: #667eea;
}

/* Upload Page */
.upload-page {
    position: relative;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 65px);
    padding: 80px 20px;
}

.upload-container {
    max-width: 650px;
    width: 100%;
    text-align: center;
}

.upload-container h2 {
    font-size: 52px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 15px;
}

.upload-container h2 .highlight {
    font-weight: 800;
}

.upload-container > p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 40px;
    font-weight: 400;
}

.upload-box {
    border: 2px dashed rgba(255, 255, 255, 0.5);
    border-radius: 12px;
    padding: 50px 40px;
    background: rgba(255, 255, 255, 0.08);
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 40px;
}

.upload-box:hover {
    border-color: rgba(255, 255, 255, 0.7);
    background: rgba(255, 255, 255, 0.12);
}

.upload-icon {
    font-size: 56px;
    margin-bottom: 15px;
    filter: brightness(0) invert(1);
}

.upload-box h3 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 0;
    font-weight: 500;
}

.upload-box span {
    color: #fff;
    font-weight: 600;
    text-decoration: underline;
}

/* Supported File Types */
.supported-types {
    margin-top: 50px;
    text-align: center;
}

.supported-types h4 {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.file-types {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.file-type {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 20px 30px;
    min-width: 140px;
    transition: all 0.2s ease;
}

.file-type:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.file-type-icon {
    height: 40px;
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.file-type-name {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 5px;
}

.file-type-extensions {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}

/* About Page */
.about-page {
    position: relative;
    z-index: 5;
    display: none;
    min-height: 100vh;
    background: #f5f5f5;
}

.about-banner {
    background: linear-gradient(180deg, #3d1e6d 0%, #5b4a99 100%);
    padding: 60px 20px;
    text-align: center;
}

.about-banner h2 {
    font-size: 48px;
    font-weight: 700;
    color: #fff;
    margin: 0;
}

.about-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 20px;
}

.about-content {
    background: #fff;
    border-radius: 12px;
    padding: 50px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    line-height: 1.8;
}

.about-content h3 {
    font-size: 32px;
    font-weight: 800;
    color: #3d1e6d;
    margin-bottom: 30px;
}

.about-content p {
    font-size: 16px;
    color: #333;
    margin-bottom: 25px;
}

.about-content ul {
    list-style: none;
    margin: 25px 0;
    padding-left: 0;
}

.about-content li {
    font-size: 16px;
    color: #333;
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
}

.about-content li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #5b4a99;
    font-weight: bold;
    font-size: 18px;
}

.back-to-home {
    display: inline-block;
    margin-top: 30px;
    padding: 12px 30px;
    background: #5b4a99;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: background 0.2s ease;
}

.back-to-home:hover {
    background: #4a3a7f;
}

/* Analysis Report Page */
.report-page {
    position: relative;
    z-index: 5;
    display: none;
    min-height: 100vh;
    background: #f5f5f5;
}

.report-banner {
    background: linear-gradient(180deg, #3d1e6d 0%, #5b4a99 100%);
    padding: 60px 20px;
    text-align: center;
}

.report-banner h2 {
    font-size: 48px;
    font-weight: 700;
    color: #fff;
    margin: 0;
}

.report-banner h2 .highlight {
    font-weight: 800;
}

.report-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 20px 60px;
}

.action-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: #5b4a99;
    color: #fff;
}

.btn-primary:hover {
    background: #4a3a7f;
}

.btn-secondary {
    background: #5b9bd5;
    color: #fff;
}

.btn-secondary:hover {
    background: #6a5aa0;
}

.btn-tertiary {
    background: #5b9bd5;
    color: #fff;
}

.btn-tertiary:hover {
    background: #6a5aa0;
}

.report-content {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 30px;
    background: #fff;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.score-section {
    text-align: center;
}

.score-circle {
    width: 140px;
    height: 140px;
    position: relative;
    margin: 0 auto 15px;
}

.score-circle svg {
    transform: rotate(-90deg);
}

.score-bg {
    stroke: #f0f0f0;
    stroke-width: 12;
    fill: none;
}

.score-fg {
    stroke: #e74c3c;
    stroke-width: 12;
    stroke-linecap: round;
    fill: none;
    transition: stroke-dashoffset 1s ease, stroke 0.3s ease;
}

.score-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-number {
    font-size: 36px;
    font-weight: 800;
    color: #e74c3c;
}

.score-percent {
    font-size: 18px;
    color: #e74c3c;
}

.score-label {
    font-size: 14px;
    color: #666;
    font-weight: 600;
    margin-top: 5px;
}

.verdict-label {
    font-size: 16px;
    font-weight: 700;
    color: #e74c3c;
    margin-top: 10px;
}

.verdict-clean {
    color: #27ae60;
}

.verdict-malicious {
    color: #e74c3c;
}

.verdict-suspicious {
    color: #f39c12;
}

/* Details Section */
.details-section {
    flex: 1;
}

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

.info-table tr {
    border-bottom: 1px solid #e5e5e5;
}

.info-table tr:last-child {
    border-bottom: none;
}

.info-table td {
    padding: 16px 0;
    font-size: 14px;
    vertical-align: top;
}

.info-table td:first-child {
    color: #666;
    font-weight: 500;
    width: 150px;
}

.info-table td:last-child {
    color: #333;
    font-weight: 400;
    word-break: break-all;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

.info-table td:last-child.regular {
    font-family: "Inter", sans-serif;
    font-size: 14px;
    font-weight: 500;
}

.malware-label {
    color: #e74c3c;
    font-weight: 700;
}

.benign-label {
    color: #27ae60;
    font-weight: 700;
}

/* Loader */
.loader-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.loader-content {
    text-align: center;
    color: #fff;
}

.spinner {
    width: 80px;
    height: 80px;
    border: 8px solid rgba(255, 255, 255, 0.2);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 30px;
}

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

.loader-text {
    font-size: 24px;
    font-weight: 600;
}

/* Footer */
.footer {
    background: #ffffff;
    color: #333;
    padding: 20px;
    text-align: center;
    font-size: 14px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
    color:#333;
}

.footer-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.footer-links a {
    color: #333;
    text-decoration: none;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a:hover {
    color: #00bcd4;
}

.footer-text {
    color: rgba(255, 255, 255, 0.8);
}

/* Responsive */
@media (max-width: 768px) {
    .upload-container {
        padding: 50px 30px;
    }
    
    .upload-container h2 {
        font-size: 36px;
    }
    
    .details-grid {
        grid-template-columns: 1fr;
    }
    
    .report-header h2 {
        font-size: 32px;
    }
}