/* CSS Variables */
:root {
    --primary-dark: #0a1929;
    --secondary-dark: #1a2332;
    --accent-blue: #00d4ff;
    --accent-green: #00ff88;
    --accent-red: #ff0044;
    --text-light: #e0e0e0;
    --text-muted: #a0a0a0;
    --purple: #9c27b0;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
    color: var(--text-light);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Header Styles */
.header {
    background: rgba(26, 35, 50, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 2px 20px rgba(0, 212, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-blue);
}

.logo i {
    font-size: 2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* Navigation Tabs */
.nav-tabs {
    border: none;
    margin-top: 1rem;
}

.nav-tabs .nav-link {
    color: var(--text-muted);
    border: none;
    padding: 0.75rem 1.5rem;
    margin: 0 0.25rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-tabs .nav-link:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-blue);
    transform: translateY(-2px);
}

.nav-tabs .nav-link.active {
    background: linear-gradient(135deg, var(--accent-blue), #0099cc);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

/* Main Content */
.tab-content {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

/* Analysis Cards */
.analysis-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    margin-bottom: 2rem;
    transition: transform 0.3s ease;
}

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

/* Scanner Area */
.scanner-area {
    background: rgba(0, 0, 0, 0.3);
    border: 2px dashed var(--accent-blue);
    border-radius: 15px;
    padding: 3rem 2rem;
    text-align: center;
    margin: 2rem 0;
    position: relative;
    overflow: hidden;
}

.scanner-line {
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--accent-blue);
    top: 0;
    left: 0;
    animation: scan 2s linear infinite;
    box-shadow: 0 0 10px var(--accent-blue);
}

@keyframes scan {
    0% { top: 0; }
    100% { top: 100%; }
}

/* Icons */
.fingerprint-icon {
    font-size: 5rem;
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.dna-icon {
    font-size: 5rem;
    color: var(--accent-green);
    margin-bottom: 1rem;
}

.iris-icon {
    font-size: 5rem;
    color: var(--purple);
    margin-bottom: 1rem;
}

/* Buttons */
.btn-forensic {
    background: linear-gradient(135deg, var(--accent-blue), #0099cc);
    border: none;
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-forensic:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.5);
    color: white;
}

/* Result Display */
.result-display {
    background: rgba(0, 0, 0, 0.4);
    border-radius: 15px;
    padding: 1.5rem;
    margin-top: 1.5rem;
    border: 1px solid rgba(0, 212, 255, 0.3);
    display: none;
}

.result-display.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

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

/* Match Indicators */
.match-indicator {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
}

.match-high { background: var(--accent-green); }
.match-medium { background: #ffaa00; }
.match-low { background: var(--accent-red); }

/* Statistics Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-blue);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer .heart {
    color: var(--accent-red);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0% { transform: scale(1); }
    25% { transform: scale(1.2); }
    50% { transform: scale(1); }
    75% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* Loading Spinner */
.loading-spinner {
    display: none;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0, 212, 255, 0.3);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 1rem auto;
}

.loading-spinner.show {
    display: block;
}

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

/* Result Styling */
.result-positive {
    border-color: rgba(0, 255, 136, 0.3);
}

.result-negative {
    border-color: rgba(255, 0, 68, 0.3);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .logo {
        font-size: 1.2rem;
    }
    
    .logo i {
        font-size: 1.5rem;
    }
    
    .nav-tabs .nav-link {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .analysis-card {
        padding: 1.5rem;
    }
    
    .scanner-area {
        padding: 2rem 1rem;
    }
    
    .fingerprint-icon, .dna-icon, .iris-icon {
        font-size: 3rem;
    }
}

/* Extra Styles for Enhanced UI */
.highlight-text {
    color: var(--accent-blue);
    font-weight: 600;
}

.success-border {
    border: 2px solid var(--accent-green);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
}

.card-header-custom {
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.1), rgba(0, 255, 136, 0.1));
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem;
    margin: -1.5rem -1.5rem 1.5rem -1.5rem;
    border-radius: 15px 15px 0 0;
}

.data-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.data-row:last-child {
    border-bottom: none;
}

.data-label {
    font-weight: 600;
    color: var(--text-muted);
}

.data-value {
    color: var(--text-light);
}

.confidence-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    margin-top: 0.5rem;
    overflow: hidden;
}

.confidence-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-green), #00ffaa);
    border-radius: 4px;
    transition: width 1s ease;
    }