/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    min-height: 100vh;
}

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

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #4A90E2;
}

.nav-logo i {
    margin-right: 10px;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    cursor: pointer;
}

.nav-link:hover,
.nav-link.active {
    color: #4A90E2;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.security-icons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.icon-item {
    text-align: center;
    color: white;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.icon-item:hover {
    transform: translateY(-10px);
}

.icon-item i {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
}

.icon-item span {
    font-size: 1.2rem;
    font-weight: 600;
}

/* Buttons */
.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(45deg, #4A90E2, #357ABD);
    color: white;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Analysis Section */
.analyze-section {
    padding: 80px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #333;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 50px;
}

.analysis-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.tab-btn {
    padding: 15px 30px;
    border: 2px solid #e0e0e0;
    background: white;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.tab-btn.active,
.tab-btn:hover {
    border-color: #4A90E2;
    background: #4A90E2;
    color: white;
}

.tab-content {
    display: none;
    max-width: 600px;
    margin: 0 auto;
}

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

.analysis-form {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #333;
}

.input-group {
    display: flex;
    gap: 10px;
}

.form-input {
    flex: 1;
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #4A90E2;
}

.file-upload {
    position: relative;
    margin-bottom: 20px;
}

.file-input {
    display: none;
}

.file-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px;
    border: 2px dashed #e0e0e0;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
}

.file-label:hover {
    border-color: #4A90E2;
    background: #f8f9fa;
}

.file-label i {
    font-size: 3rem;
    color: #4A90E2;
    margin-bottom: 15px;
}

.file-label span {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
}

/* Loading Spinner */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(74, 144, 226, 0.95);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    text-align: center;
    color: white;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-top: 5px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

/* Results Section */
.results-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.score-card {
    display: flex;
    align-items: center;
    gap: 40px;
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 40px;
}

.score-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(45deg, #4A90E2, #357ABD);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    position: relative;
}

.score-value {
    font-size: 3rem;
    font-weight: bold;
}

.score-label {
    font-size: 1rem;
    opacity: 0.9;
}

.score-details h3 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: #333;
}

.score-details p {
    font-size: 1.1rem;
    color: #666;
}

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.analysis-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.analysis-card:hover {
    transform: translateY(-5px);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.card-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #333;
}

.card-header i {
    color: #4A90E2;
    font-size: 1.5rem;
}

.status-badge {
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.status-badge.pass {
    background: #d4edda;
    color: #155724;
}

.status-badge.fail {
    background: #f8d7da;
    color: #721c24;
}

.status-badge.unknown {
    background: #fff3cd;
    color: #856404;
}

.score-bar {
    width: 100%;
    height: 10px;
    background: #e0e0e0;
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 15px;
}

.score-fill {
    height: 100%;
    background: linear-gradient(45deg, #4A90E2, #357ABD);
    transition: width 0.5s ease;
}

.score-text {
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.details {
    color: #666;
    line-height: 1.5;
}

/* Report Section */
.report-section {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.report-actions {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.report-content {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    font-family: 'Courier New', monospace;
    white-space: pre-wrap;
    max-height: 500px;
    overflow-y: auto;
}

/* About Section */
.about-section {
    padding: 80px 0;
    background: white;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.about-card {
    text-align: center;
    padding: 40px 30px;
    border-radius: 15px;
    background: #f8f9fa;
    transition: transform 0.3s ease;
}

.about-card:hover {
    transform: translateY(-10px);
}

.about-card i {
    font-size: 3rem;
    color: #4A90E2;
    margin-bottom: 20px;
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.about-card p {
    color: #666;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #357ABD;
    color: white;
    text-align: center;
    padding: 30px 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .security-icons {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        display: none;
    }
    
    .analysis-grid {
        grid-template-columns: 1fr;
    }
    
    .score-card {
        flex-direction: column;
        text-align: center;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .hero-buttons {
        justify-content: center;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }
.mb-40 { margin-bottom: 40px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }