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

:root {
    /* Cursor Dark Theme Colors */
    --bg-primary: #1e1e1e;
    --bg-secondary: #252526;
    --bg-tertiary: #2d2d30;
    --bg-card: #2d2d30;
    --bg-hover: #2a2d2e;
    --accent-primary: #007acc;
    --accent-secondary: #0e639c;
    --accent-gradient: linear-gradient(135deg, #007acc 0%, #0e639c 50%, #1177bb 100%);
    --text-primary: #cccccc;
    --text-secondary: #858585;
    --text-muted: #6a6a6a;
    --border-color: #3e3e42;
    --success: #4ec9b0;
    --warning: #dcdcaa;
    --error: #f48771;
    --shadow: rgba(0, 0, 0, 0.5);
    --selection-bg: #264f78;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px var(--shadow);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.2s;
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width 0.3s;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 0.625rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    font-weight: 600;
    font-size: 0.9375rem;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 122, 204, 0.3);
}

.btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 122, 204, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* Hero Section */
.hero {
    background: var(--bg-secondary);
    padding: 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -1px;
}

.subtitle {
    font-size: 1.375rem;
    margin-bottom: 2.5rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.features h2 {
    text-align: center;
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: 4rem;
    color: var(--text-primary);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-primary);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(0, 122, 204, 0.2);
    background: var(--bg-tertiary);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.375rem;
    font-weight: 600;
}

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

/* Pricing Section */
.pricing-preview {
    background: var(--bg-primary);
    padding: 6rem 0;
}

.pricing-preview h2 {
    text-align: center;
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: 4rem;
    color: var(--text-primary);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-card);
    padding: 3rem 2.5rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px var(--shadow);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-primary);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 122, 204, 0.25);
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.pricing-card:hover::before {
    transform: scaleX(1);
}

.pricing-card.featured {
    border: 2px solid var(--accent-primary);
    background: var(--bg-tertiary);
    transform: scale(1.02);
}

.pricing-card.featured::before {
    transform: scaleX(1);
}

.pricing-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 700;
}

.price {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
    line-height: 1;
}

.price span {
    font-size: 1.25rem;
    color: var(--text-muted);
    font-weight: 400;
}

.pricing-card ul {
    list-style: none;
    margin: 2.5rem 0;
    text-align: left;
}

.pricing-card ul li {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pricing-card ul li:last-child {
    border-bottom: none;
}

.pricing-card ul li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pricing-card ul li:before {
    content: "";
    flex-shrink: 0;
}

/* Footer */
footer {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    text-align: center;
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
}

/* Form Styles */
.form-container {
    max-width: 450px;
    margin: 3rem auto;
    padding: 3rem;
    background: var(--bg-card);
    border-radius: 20px;
    box-shadow: 0 8px 32px var(--shadow);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transition: all 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(0, 122, 204, 0.2);
    background: var(--bg-secondary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Dashboard Styles */
.dashboard {
    padding: 3rem 0;
    min-height: calc(100vh - 200px);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.dashboard-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 16px var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 122, 204, 0.2);
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.stat-card h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.stat-card .value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.upload-section {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px var(--shadow);
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.upload-section h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 700;
}

.upload-section input[type="file"] {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-tertiary);
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    width: 100%;
    cursor: pointer;
    transition: all 0.3s;
}

.upload-section input[type="file"]:hover {
    border-color: var(--accent-primary);
    background: var(--bg-secondary);
}

.results-section {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px var(--shadow);
    border: 1px solid var(--border-color);
}

.results-section h2 {
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 700;
}

.risk-score {
    font-size: 4rem;
    font-weight: 900;
    text-align: center;
    margin: 3rem 0;
    letter-spacing: -2px;
}

.risk-score.low {
    color: var(--success);
}

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

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

.risks-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    overflow: hidden;
}

.risks-table th,
.risks-table td {
    padding: 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.risks-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    font-size: 0.8125rem;
    letter-spacing: 0.5px;
}

.risks-table td {
    color: var(--text-secondary);
}

.risks-table tr:hover {
    background: var(--bg-hover);
}

.severity-badge {
    padding: 0.375rem 1rem;
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
}

.severity-badge.low {
    background: rgba(78, 201, 176, 0.15);
    color: var(--success);
    border: 1px solid rgba(78, 201, 176, 0.3);
}

.severity-badge.medium {
    background: rgba(220, 220, 170, 0.15);
    color: var(--warning);
    border: 1px solid rgba(220, 220, 170, 0.3);
}

.severity-badge.high {
    background: rgba(244, 135, 113, 0.15);
    color: var(--error);
    border: 1px solid rgba(244, 135, 113, 0.3);
}

/* =============================================================================
   CSS-ONLY MOBILE MENU (No JavaScript Required)
   Uses the checkbox hack for pure CSS toggle functionality
   ============================================================================= */

/* Hidden checkbox that controls menu state */
.mobile-menu-checkbox {
    display: none;
}

/* Hamburger toggle label */
.mobile-menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    cursor: pointer;
    border-radius: 8px;
    transition: background 0.2s;
    z-index: 1001;
    position: relative;
}

.mobile-menu-toggle:hover {
    background: var(--bg-hover);
}

/* Hamburger icon lines */
.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
    position: absolute;
    left: 10px;
    top: 21px;
}

.mobile-menu-toggle span:before,
.mobile-menu-toggle span:after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
    left: 0;
}

.mobile-menu-toggle span:before {
    top: -7px;
}

.mobile-menu-toggle span:after {
    top: 7px;
}

/* Hamburger to X animation when checked */
.mobile-menu-checkbox:checked + .mobile-menu-toggle span {
    background: transparent;
}

.mobile-menu-checkbox:checked + .mobile-menu-toggle span:before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-checkbox:checked + .mobile-menu-toggle span:after {
    top: 0;
    transform: rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* Show overlay when menu is open */
.mobile-menu-checkbox:checked ~ .mobile-menu-overlay {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .mobile-menu-overlay {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        max-width: 85vw;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        align-items: stretch;
        padding: 80px 24px 32px;
        gap: 0;
        z-index: 1000;
        box-shadow: -4px 0 24px var(--shadow);
        transition: right 0.3s ease;
        overflow-y: auto;
    }
    
    /* Slide menu in when checkbox is checked */
    .mobile-menu-checkbox:checked ~ .nav-links {
        right: 0;
    }
    
    .nav-links a {
        padding: 16px 0;
        border-bottom: 1px solid var(--border-color);
        font-size: 1rem;
        display: block;
    }
    
    .nav-links a:last-child {
        border-bottom: none;
    }
    
    .nav-links a::after {
        display: none;
    }
    
    .nav-links .btn-primary,
    .nav-links .btn-secondary {
        text-align: center;
        margin-top: 8px;
        padding: 14px 24px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .feature-grid,
    .pricing-cards {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-large {
        width: 100%;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .dashboard-header h1 {
        font-size: 1.75rem;
    }
    
    .form-container {
        margin: 1.5rem;
        padding: 2rem;
    }
    
    .upload-section,
    .results-section {
        padding: 1.5rem;
    }
    
    .risks-table {
        display: block;
        overflow-x: auto;
    }
    
    .risk-score {
        font-size: 3rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 3rem 0;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .features,
    .pricing-preview {
        padding: 3rem 0;
    }
    
    .features h2,
    .pricing-preview h2 {
        font-size: 1.75rem;
        margin-bottom: 2rem;
    }
    
    .stat-card {
        padding: 1.25rem;
    }
    
    .stat-card .value {
        font-size: 2rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-card);
    border-radius: 5px;
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

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

.feature-card,
.pricing-card,
.stat-card {
    animation: fadeIn 0.6s ease-out;
}