/* NeuroGuard - Professional AI Medical Technology Website */
/* Inspired by neurofluxai.org - Clean, Scientific, Professional Design */

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

:root {
    /* Vibrant Color Scheme - Modern Medical Tech */
    --primary-bg: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
    --secondary-bg: #16213e;
    --accent-bg: #0f3460;
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #e2e8f0;
    --text-muted: #94a3b8;
    --accent-color: #00d4ff;
    --accent-hover: #00a8cc;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --border-color: rgba(255, 255, 255, 0.1);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Shadows */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
}

body {
    font-family: var(--font-primary);
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
}

/* ===== NAVIGATION ===== */
.navbar {
    background: var(--primary-bg);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-md) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-color);
}

/* ===== HERO SECTION ===== */
.hero {
    padding: var(--spacing-2xl) 0 var(--spacing-xl) 0;
    margin-top: 80px;
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    text-align: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn-primary {
    background: var(--accent-color);
    color: var(--primary-bg);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

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

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

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

/* ===== FEATURES SECTION ===== */
.features {
    padding: var(--spacing-2xl) 0;
    background: var(--secondary-bg);
}

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

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

.feature-card {
    background: var(--accent-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--accent-color);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== TECHNOLOGY SECTION ===== */
.technology {
    padding: var(--spacing-2xl) 0;
    background: var(--primary-bg);
}

.tech-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tech-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.tech-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--accent-color);
}

.tech-info ul {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
}

.tech-info li {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.accuracy-badge {
    background: var(--accent-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-color);
}

.accuracy-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-color);
    display: block;
}

.accuracy-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
}

/* ===== PREVENTION SECTION ===== */
.prevention {
    padding: var(--spacing-2xl) 0;
    background: var(--secondary-bg);
}

.prevention h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.prevention p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.prevention-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.prevention-item {
    background: var(--accent-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.prevention-item h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-color);
}

.prevention-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.prevention-action {
    text-align: center;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--primary-bg);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--accent-color);
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--text-muted);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }

    .nav-menu {
        gap: var(--spacing-md);
    }

    .tech-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

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

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

/* ===== AUTHENTICATION PAGES ===== */

/* Header */
.header {
    text-align: center;
    padding: var(--spacing-8) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-8);
}

.logo h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-2);
}

.logo p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

/* Auth Container */
.auth-container {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
}

.auth-tabs {
    display: flex;
    margin-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-6);
    background: none;
    border: none;
    font-size: 1rem;
    color: var(--gray-500);
    cursor: pointer;
    transition: var(--transition-normal);
    border-bottom: 2px solid transparent;
}

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

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.auth-form h2 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-2);
}

.auth-form p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-6);
}

/* Form Elements */
.input-row {
    display: flex;
    gap: var(--spacing-4);
}

.input-group {
    margin-bottom: var(--spacing-4);
    flex: 1;
}

.input-group label {
    display: block;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--spacing-2);
}

.input-group input,
.input-group select {
    width: 100%;
    padding: var(--spacing-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition-normal);
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 82, 130, 0.1);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-6);
}

.checkbox-group input[type="checkbox"] {
    width: auto;
}

.auth-links {
    text-align: center;
    margin-top: var(--spacing-4);
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
}

.auth-links a:hover {
    text-decoration: underline;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-3) var(--spacing-6);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    line-height: 1.5;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    width: 100%;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

.btn-success {
    background: var(--success-color);
    color: var(--white);
}

.btn-success:hover {
    background: #38a169;
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* ===== DASHBOARD STYLES ===== */

.dashboard-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-6);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-8);
    padding: var(--spacing-6);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.welcome-section h1 {
    color: var(--gray-800);
    font-size: 2rem;
    margin-bottom: var(--spacing-2);
}

.welcome-section p {
    color: var(--gray-600);
}

.date-section {
    color: var(--gray-500);
    font-size: 0.9rem;
}

/* Stats Grid */
.stats-section {
    margin-bottom: var(--spacing-8);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
}

.stat-card {
    background: var(--white);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    transition: var(--transition-normal);
}

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

.stat-icon {
    font-size: 2rem;
    background: var(--gray-100);
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
}

.stat-content h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-1);
}

.stat-content p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

/* Sections */
.today-recommendations,
.quick-actions,
.recent-activity {
    margin-bottom: var(--spacing-8);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-6);
}

.section-header h2 {
    color: var(--gray-800);
}

.view-all-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.view-all-link:hover {
    text-decoration: underline;
}

/* Recommendations Grid */
.recommendations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

.recommendation-card {
    background: var(--white);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--accent-color);
    transition: var(--transition-normal);
}

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

.recommendation-card h3 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-3);
}

.recommendation-card p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-4);
}

.recommendation-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

.priority-high { border-left-color: var(--error-color); }
.priority-medium { border-left-color: var(--warning-color); }
.priority-low { border-left-color: var(--success-color); }

/* Quick Actions */
.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
}

.action-card {
    background: var(--white);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
}

.action-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.action-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-4);
}

.action-card h3 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-2);
}

.action-card p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

/* ===== TUMOR DETECTION STYLES ===== */

.detection-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-6);
}

.page-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
    padding: var(--spacing-8);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.page-header h1 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-3);
}

.page-header p {
    color: var(--gray-600);
    font-size: 1.1rem;
}

/* Notice Banner */
.notice-banner {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-8);
}

.notice-icon {
    font-size: 1.5rem;
}

.notice-content h3 {
    color: var(--warning-color);
    margin-bottom: var(--spacing-2);
}

/* Upload Section */
.upload-section {
    margin-bottom: var(--spacing-8);
}

.upload-container {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.upload-area {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-12);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: var(--gray-50);
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: var(--gray-50);
}

.upload-icon {
    font-size: 3rem;
    color: var(--gray-400);
    margin-bottom: var(--spacing-4);
}

.upload-area h3 {
    color: var(--gray-700);
    margin-bottom: var(--spacing-2);
}

.upload-requirements {
    margin-top: var(--spacing-6);
    text-align: left;
    background: var(--gray-50);
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
}

.upload-requirements ul {
    list-style-position: inside;
    color: var(--gray-600);
}

/* Image Preview */
.image-preview {
    text-align: center;
}

.image-preview img {
    max-width: 100%;
    max-height: 400px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-4);
}

.preview-actions {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
}

/* Analysis Progress */
.analysis-progress {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-8);
}

.progress-container {
    text-align: center;
}

.progress-header h3 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-2);
}

.progress-bar {
    background: var(--gray-200);
    height: 8px;
    border-radius: var(--radius-sm);
    margin: var(--spacing-6) 0;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width var(--transition-normal);
}

.progress-text {
    color: var(--gray-600);
    font-style: italic;
}

/* Results Section */
.results-section {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-8);
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-6);
}

.result-card {
    background: var(--gray-50);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
}

.main-result {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

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

.confidence-meter {
    margin-top: var(--spacing-4);
}

.confidence-bar {
    background: var(--gray-200);
    height: 12px;
    border-radius: var(--radius-sm);
    margin: var(--spacing-2) 0;
    overflow: hidden;
}

.confidence-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color), var(--warning-color));
    transition: width var(--transition-slow);
}

.details-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--gray-200);
}

.detail-label {
    font-weight: 500;
    color: var(--gray-700);
}

/* Result Actions */
.result-actions {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    margin-top: var(--spacing-6);
}

/* ===== RECOMMENDATIONS PAGE ===== */

.recommendations-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-6);
}

/* Filter Section */
.filter-section {
    background: var(--white);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-8);
}

.filter-controls {
    display: flex;
    gap: var(--spacing-6);
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    min-width: 150px;
}

.filter-group label {
    font-weight: 500;
    color: var(--gray-700);
}

.filter-group select {
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--white);
}

/* Featured Recommendations */
.featured-recommendations {
    margin-bottom: var(--spacing-8);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-6);
}

.featured-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.featured-card h3 {
    margin-bottom: var(--spacing-3);
}

/* Recommendations List */
.recommendations-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.recommendation-item {
    background: var(--white);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: var(--transition-normal);
    border-left: 4px solid var(--gray-300);
}

.recommendation-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-lg);
}

.recommendation-item.completed {
    opacity: 0.7;
    border-left-color: var(--success-color);
}

/* Progress Summary */
.progress-summary {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-8);
}

.progress-stats {
    display: flex;
    justify-content: space-around;
    margin-top: var(--spacing-6);
}

.progress-item {
    text-align: center;
}

.progress-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0 auto var(--spacing-3);
}

/* ===== MODAL STYLES ===== */

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease-out;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease-out;
}

.modal-content.large {
    max-width: 800px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
    color: var(--gray-800);
}

.modal-close {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-500);
}

.modal-close:hover {
    color: var(--gray-700);
}

.modal-body {
    padding: var(--spacing-6);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-4);
    margin-top: var(--spacing-6);
}

/* Rating Section */
.rating-section {
    border-top: 1px solid var(--gray-200);
    padding-top: var(--spacing-6);
    margin-top: var(--spacing-6);
}

.star-rating {
    display: flex;
    gap: var(--spacing-2);
    margin: var(--spacing-4) 0;
}

.star {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-300);
    transition: var(--transition-fast);
}

.star:hover,
.star.active {
    color: #ffd700;
}

.rating-section textarea {
    width: 100%;
    min-height: 80px;
    padding: var(--spacing-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    resize: vertical;
    margin-top: var(--spacing-4);
}

/* ===== ALERT SYSTEM ===== */

.alert-container {
    position: fixed;
    top: var(--spacing-6);
    right: var(--spacing-6);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.alert {
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    animation: slideInRight 0.3s ease-out;
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left: 4px solid var(--success-color);
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid var(--error-color);
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-left: 4px solid var(--info-color);
}

.alert-close {
    position: absolute;
    top: var(--spacing-2);
    right: var(--spacing-3);
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
}

.alert-close:hover {
    opacity: 1;
}

/* ===== LOADING STATES ===== */

.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8);
    color: var(--gray-500);
    font-style: italic;
}

.loading-spinner::before {
    content: '⏳';
    margin-right: var(--spacing-2);
    animation: spin 2s linear infinite;
}

/* ===== ANIMATIONS ===== */

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ===== RESPONSIVE DESIGN ===== */

@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: var(--spacing-2);
    }
    
    .stats-grid,
    .actions-grid,
    .recommendations-grid,
    .featured-grid {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-controls {
        flex-direction: column;
    }
    
    .input-row {
        flex-direction: column;
    }
    
    .dashboard-header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-4);
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-4);
    }
    
    .progress-stats {
        flex-direction: column;
        gap: var(--spacing-6);
    }
}

@media (max-width: 480px) {
    .container,
    .dashboard-container,
    .recommendations-container,
    .detection-container {
        padding: var(--spacing-3);
    }
    
    .auth-container {
        padding: var(--spacing-4);
    }
    
    .alert-container {
        top: var(--spacing-3);
        right: var(--spacing-3);
        left: var(--spacing-3);
    }
    
    .alert {
        min-width: auto;
    }
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-6);
    color: var(--gray-500);
    background: var(--white);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-8);
    box-shadow: var(--shadow-md);
}

/* ===== NEW COMPONENTS ===== */

/* Steps Grid */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
    margin-top: var(--spacing-6);
}

.step-card {
    background: var(--white);
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-4);
}

.step-card h3 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-3);
}

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

/* Tip Header */
.tip-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

.tip-icon {
    font-size: 1.5rem;
}

/* Scan Items */
.scan-item {
    border-left: 4px solid var(--info-color);
}

.scan-confidence {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin: 0;
}

.scan-actions {
    margin-left: auto;
}

/* About Modal Content */
.about-content h4 {
    color: var(--primary-color);
    margin: var(--spacing-6) 0 var(--spacing-3) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.about-content ul {
    margin: var(--spacing-3) 0;
    padding-left: var(--spacing-5);
}

.about-content li {
    margin-bottom: var(--spacing-2);
    line-height: 1.5;
}

.disclaimer-box {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    margin: var(--spacing-4) 0;
}

.disclaimer-box p {
    margin-bottom: var(--spacing-2);
}

.disclaimer-box strong {
    color: var(--warning-color);
}

/* Result Explanations */
.result-explanation {
    background: var(--gray-50);
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
}

.explanation-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--gray-700);
}

.next-steps {
    background: var(--white);
    border: 1px solid var(--gray-200);
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
}

.recommendations-list {
    list-style: none;
    padding: 0;
}

.recommendations-list li {
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--gray-200);
    position: relative;
    padding-left: var(--spacing-6);
}

.recommendations-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.recommendations-list li:last-child {
    border-bottom: none;
}

.important-notice {
    background: #fef2f2;
    border: 1px solid #fca5a5;
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
}

.important-notice h4 {
    color: var(--error-color) !important;
    margin-top: 0;
}

/* Result Classes */
.result-normal {
    color: var(--success-color);
}

.result-medium {
    color: var(--warning-color);
}

.result-high {
    color: var(--error-color);
}

/* How It Works Section */
.how-it-works {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-8);
}

.how-it-works h2 {
    text-align: center;
    color: var(--gray-800);
    margin-bottom: var(--spacing-6);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.hidden { display: none; }
.visible { display: block; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.mt-4 { margin-top: var(--spacing-4); }
.mb-4 { margin-bottom: var(--spacing-4); }
.p-4 { padding: var(--spacing-4); }
.rounded { border-radius: var(--radius-md); }
.shadow { box-shadow: var(--shadow-md); }

/* ===== ENHANCED SECTIONS ===== */

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.section-header h2 i {
    color: var(--accent-color);
    font-size: 2rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Enhanced Recent Scans */
.recent-activity {
    background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--accent-bg) 100%);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    margin: var(--spacing-2xl) 0;
    border: 1px solid var(--border-color);
}

.recent-activity .section-header {
    margin-bottom: var(--spacing-xl);
}

.no-data-message {
    text-align: center;
    padding: var(--spacing-2xl);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--border-color);
}

.no-data-message .no-data-icon {
    font-size: 4rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
    opacity: 0.7;
}

.no-data-message h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.no-data-message p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.btn-glow {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
    transition: all 0.3s ease;
}

.btn-glow:hover {
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
    transform: translateY(-2px);
}

/* Team Section */
.team-section {
    padding: var(--spacing-2xl) 0;
    background: var(--primary-bg);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.team-card {
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.team-avatar {
    margin-bottom: var(--spacing-lg);
}

.avatar-placeholder {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 2.5rem;
    color: var(--primary-bg);
}

.team-info h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.team-role {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.team-bio {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.team-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.skill-tag {
    background: var(--accent-bg);
    color: var(--accent-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

/* Enhanced How It Works */
.how-it-works {
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--accent-bg) 100%);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    margin: var(--spacing-2xl) 0;
    border: 1px solid var(--border-color);
}

.process-overview {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.process-card {
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    border: 1px solid var(--border-color);
    min-width: 250px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.process-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.process-icon {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
    background: rgba(0, 212, 255, 0.1);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.process-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.process-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.process-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.feature-item i {
    color: var(--accent-color);
}

.process-arrow {
    font-size: 2rem;
    color: var(--accent-color);
    font-weight: bold;
}

/* Technology Details */
.tech-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.tech-card {
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.tech-card h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tech-card h4 i {
    color: var(--accent-color);
}

.tech-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.tech-item {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.tech-item strong {
    color: var(--text-primary);
}

.security-list {
    list-style: none;
    padding: 0;
}

.security-list li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.security-list li i {
    color: var(--accent-color);
    flex-shrink: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .section-header h2 {
        font-size: 2rem;
    }

    .team-grid,
    .process-overview,
    .tech-details {
        grid-template-columns: 1fr;
    }

    .process-overview {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .process-arrow {
        transform: rotate(90deg);
    }

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

/* ===== NEW VIBRANT STYLES ===== */

/* Hero Section */
.hero-section {
    min-height: 100vh;
    background: var(--primary-bg);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero-background-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
}

.hero-background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(15, 15, 35, 0.85) 0%,
        rgba(26, 26, 46, 0.9) 50%,
        rgba(15, 15, 35, 0.85) 100%
    );
    z-index: 2;
}

.hero-background-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(245, 87, 108, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(79, 172, 254, 0.15) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(245, 87, 108, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(79, 172, 254, 0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-10px) rotate(1deg); }
    66% { transform: translateY(10px) rotate(-1deg); }
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text {
    color: var(--text-primary);
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.gradient-text {
    background: var(--gradient-3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.brain-animation {
    width: 300px;
    height: 300px;
    position: relative;
    animation: pulse 4s ease-in-out infinite;
}

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

.brain-outline {
    width: 100%;
    height: 100%;
    border: 3px solid var(--accent-color);
    border-radius: 50%;
    position: relative;
    opacity: 0.3;
}

.brain-outline::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 20%;
    right: 20%;
    bottom: 20%;
    border: 2px solid var(--success-color);
    border-radius: 50%;
}

.brain-scan-lines {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(45deg, transparent 30%, var(--accent-color) 50%, transparent 70%),
        linear-gradient(-45deg, transparent 30%, var(--success-color) 50%, transparent 70%);
    animation: scan 3s linear infinite;
}

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

.ai-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: particle-float 6s ease-in-out infinite;
}

.particle-1 {
    top: 20%;
    left: 30%;
    animation-delay: 0s;
}

.particle-2 {
    top: 60%;
    right: 20%;
    animation-delay: 2s;
    background: var(--success-color);
}

.particle-3 {
    bottom: 30%;
    left: 60%;
    animation-delay: 4s;
    background: var(--warning-color);
}

@keyframes particle-float {
    0%, 100% {
        transform: translateY(0px) translateX(0px);
        opacity: 0.5;
    }
    50% {
        transform: translateY(-20px) translateX(10px);
        opacity: 1;
    }
}

/* Quick Actions */
.quick-actions {
    padding: var(--spacing-2xl) 0;
    background: var(--secondary-bg);
    position: relative;
}

.quick-actions::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(102, 126, 234, 0.05) 0%, rgba(245, 87, 108, 0.05) 100%);
}

.quick-actions .container {
    position: relative;
    z-index: 2;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: var(--gradient-3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.action-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.action-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-color);
}

.primary-card {
    background: var(--gradient-1);
    color: white;
}

.primary-card .action-icon {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.primary-card h3 {
    color: white;
}

.primary-card p {
    color: rgba(255, 255, 255, 0.9);
}

.secondary-card:hover {
    border-color: var(--success-color);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.accent-card:hover {
    border-color: var(--warning-color);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.3);
}

.card-gradient-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-1);
    opacity: 0.1;
    z-index: -1;
}

.action-icon {
    width: 80px;
    height: 80px;
    background: var(--accent-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    font-size: 2rem;
    color: var(--accent-color);
    transition: all 0.3s ease;
}

.action-card:hover .action-icon {
    transform: scale(1.1);
    background: var(--accent-color);
    color: var(--primary-bg);
}

.action-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.action-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.card-arrow {
    position: absolute;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s ease;
}

.primary-card:hover .card-arrow {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}

/* Project Section */
.project-section {
    padding: var(--spacing-2xl) 0;
    background: var(--primary-bg);
    position: relative;
}

.project-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.05) 0%, rgba(0, 242, 254, 0.05) 100%);
}

.project-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.project-text h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.project-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.project-features {
    display: grid;
    gap: var(--spacing-lg);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-content h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
    font-weight: 600;
}

.feature-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
}

.project-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.tech-stack {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.stack-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all 0.3s ease;
}

.stack-item:hover {
    transform: translateX(10px);
    border-color: var(--accent-color);
    box-shadow: var(--shadow-glow);
}

.stack-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    color: white;
}

.tensorflow { background: var(--gradient-1); }
.python { background: var(--gradient-2); }
.neural { background: var(--gradient-3); }

.stack-item span {
    color: var(--text-primary);
    font-weight: 600;
}

/* How It Works */
.how-it-works {
    padding: var(--spacing-2xl) 0;
    background: var(--secondary-bg);
}

.process-timeline {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    margin-top: var(--spacing-2xl);
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color), var(--success-color), var(--warning-color));
    z-index: 1;
}

.timeline-item {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 300px;
    transition: all 0.3s ease;
}

.timeline-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.timeline-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-3);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.timeline-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.3rem;
    font-weight: 600;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.timeline-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.feature-tag {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.timeline-visual {
    font-size: 3rem;
    color: var(--accent-color);
    margin-top: var(--spacing-lg);
}

.timeline-connector {
    width: 50px;
    height: 2px;
    background: var(--accent-color);
    position: relative;
    z-index: 2;
}

/* Team Section */
.team-section {
    padding: var(--spacing-2xl) 0;
    background: var(--primary-bg);
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-2xl);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.team-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all 0.3s ease;
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-color);
}

.team-photo {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.team-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s ease;
}

.team-card:hover .team-image {
    transform: scale(1.05);
}

.team-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.team-card:hover .team-overlay {
    opacity: 1;
}

.team-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    transform: scale(1.1);
    background: var(--accent-hover);
}

.team-info {
    padding: var(--spacing-xl);
}

.team-info h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.team-role {
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.team-bio {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.team-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-2xl) 0;
    background: var(--gradient-1);
    position: relative;
    overflow: hidden;
}

.cta-section::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="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.1rem;
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 2rem;
    }

    .hero-stats {
        justify-content: center;
    }

    .project-content,
    .actions-grid {
        grid-template-columns: 1fr;
    }

    .process-timeline {
        flex-direction: column;
        gap: var(--spacing-xl);
    }

    .process-timeline::before {
        display: none;
    }

    .timeline-connector {
        display: none;
    }

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

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* ===== TUMOR DETECTION PAGE STYLES ===== */

.upload-area:hover {
    border-color: var(--accent-color) !important;
    background: rgba(0, 212, 255, 0.05) !important;
}

.upload-area.dragover {
    border-color: var(--success-color) !important;
    background: rgba(16, 185, 129, 0.1) !important;
    transform: scale(1.02);
}

.recommendation-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.6;
}

.recommendation-item strong {
    color: var(--text-primary);
}

.recommendation-item i {
    color: var(--accent-color);
    margin-right: var(--spacing-sm);
}

/* ===== ENHANCED CTA ANIMATIONS ===== */

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 12px 35px rgba(0, 212, 255, 0.6);
        transform: scale(1.05);
    }
}

@keyframes shine {
    0% { left: -100%; }
    100% { left: 100%; }
}

.btn-large:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px rgba(0, 212, 255, 0.5);
}

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

/* ===== ENHANCED BRAIN HEALTH TIP STYLES ===== */

.tip-card-container {
    position: relative;
}

.tip-card-main {
    box-shadow: var(--shadow-lg);
}

.tip-card-main:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.tip-card-header {
    position: relative;
    overflow: hidden;
}

.tip-priority-indicator {
    animation: pulse-bg 3s ease-in-out infinite;
}

@keyframes pulse-bg {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.5; }
}

.tip-icon-large {
    animation: float-icon 4s ease-in-out infinite;
}

@keyframes float-icon {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

.tip-title {
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.tip-category-badge {
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.tip-description {
    position: relative;
}

.tip-description::first-letter {
    font-size: 1.3em;
    font-weight: 700;
    color: var(--accent-color);
}

.tip-actions {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-lg);
}

.priority-dot {
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% {
        box-shadow: 0 0 10px currentColor;
        opacity: 1;
    }
    50% {
        box-shadow: 0 0 20px currentColor;
        opacity: 0.7;
    }
}

.priority-text {
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.tip-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tip-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.tip-btn-share:hover {
    background: rgba(0, 212, 255, 0.2);
    border-color: var(--accent-color);
}

.tip-btn-save:hover {
    background: linear-gradient(135deg, #00a8cc 0%, #0088aa 100%);
    transform: translateY(-2px) scale(1.05);
}

.tip-card-decoration {
    animation: rotate-decoration 20s linear infinite;
}

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

/* Alert Styles */
.alert {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    color: white;
    font-weight: 500;
    z-index: 1000;
    animation: slide-in 0.3s ease-out;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.alert-success {
    background: rgba(16, 185, 129, 0.9);
}

.alert-error {
    background: rgba(239, 68, 68, 0.9);
}

.alert-info {
    background: rgba(59, 130, 246, 0.9);
}

@keyframes slide-in {
    0% {
        transform: translateX(100%);
        opacity: 0;
    }
    100% {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ===== ENHANCED LOADING ANIMATIONS ===== */

@keyframes pulse-brain {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

@keyframes bounce-dot {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1.2);
        opacity: 1;
    }
}

.loading-brain-icon {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.loading-spinner-enhanced {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.loading-dots {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* ===== RECOMMENDATIONS PAGE ENHANCED STYLES ===== */

.page-header-bg {
    animation: header-bg-float 15s ease-in-out infinite;
}

@keyframes header-bg-float {
    0%, 100% { opacity: 0.1; }
    50% { opacity: 0.2; }
}

.header-stats {
    animation: stats-fade-in 1s ease-out 0.5s both;
}

@keyframes stats-fade-in {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-icon {
    animation: stat-icon-bounce 2s ease-in-out infinite;
}

@keyframes stat-icon-bounce {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

.filter-controls select {
    cursor: pointer;
}

.filter-controls select:hover {
    border-color: var(--accent-color);
    background: rgba(0, 212, 255, 0.05);
}

.filter-controls select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.advanced-toggle {
    animation: advanced-toggle-fade 0.5s ease-out 0.6s both;
}

@keyframes advanced-toggle-fade {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.advanced-filters {
    animation: advanced-filters-slide 0.4s ease-out;
}

@keyframes advanced-filters-slide {
    0% {
        opacity: 0;
        max-height: 0;
        overflow: hidden;
    }
    100% {
        opacity: 1;
        max-height: 500px;
        overflow: visible;
    }
}

.filter-preferences {
    animation: filter-preferences-fade 0.5s ease-out 0.3s both;
}

@keyframes filter-preferences-fade {
    0% {
        opacity: 0;
        transform: translateY(15px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.filter-actions {
    animation: filter-actions-slide 0.5s ease-out 0.8s both;
}

@keyframes filter-actions-slide {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.progress-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.progress-circle {
    animation: progress-circle-pulse 3s ease-in-out infinite;
}

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

/* Enhanced Modal Styles */
.modal-content {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-glow);
}

/* Enhanced Filter Controls Animations */
@keyframes slideDown {
    0% {
        opacity: 0;
        transform: translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.advanced-filters {
    animation: slideDown 0.3s ease-out;
}

/* Filter group hover effects */
.filter-group:hover .filter-group-bg {
    opacity: 1;
}

/* Button shine effect on hover */
.btn:hover .btn-bg {
    left: 100%;
}

/* Advanced toggle chevron rotation */
#advancedIcon {
    transition: transform 0.3s ease;
}

#advancedFilters[style*="display: block"] ~ .advanced-toggle #advancedIcon {
    transform: rotate(180deg);
}

/* Responsive filter grid */
@media (max-width: 1024px) {
    .filter-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: var(--spacing-md) !important;
    }
}

@media (max-width: 768px) {
    .filter-grid {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md) !important;
    }
    
    .filter-actions {
        flex-direction: column !important;
        gap: var(--spacing-md) !important;
    }
    
    .filter-preferences {
        flex-direction: column !important;
        gap: var(--spacing-md) !important;
    }
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-xl);
}

.modal-header h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
}

.modal-close {
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close:hover {
    color: var(--error-color);
    transform: scale(1.2);
}

.modal-body {
    padding: var(--spacing-xl);
}

.star-rating {
    display: flex;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.star {
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.star:hover {
    transform: scale(1.2);
}

.star.active {
    color: var(--warning-color);
}