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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    margin-bottom: 1.5rem;
}

.header-links {
    margin-top: 1rem;
}

.github-link {
    display: inline-block;
    background: white;
    color: var(--primary);
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.github-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

section {
    background: var(--card-bg);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text);
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature {
    text-align: center;
    padding: 1.5rem;
    border: 2px solid var(--border);
    border-radius: 0.75rem;
    transition: all 0.3s;
}

.feature:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 1rem;
}

/* Email Input */
#emailInput {
    width: 100%;
    min-height: 300px;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: 0.75rem;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    resize: vertical;
    transition: border-color 0.3s;
}

#emailInput:focus {
    outline: none;
    border-color: var(--primary);
}

/* Buttons */
.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

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

.primary-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

.secondary-btn:hover {
    background: #475569;
}

button:active {
    transform: translateY(0);
}

/* Results Section */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.result-card {
    background: var(--bg);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border);
}

.result-card.full-width {
    grid-column: 1 / -1;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.result-item:last-child {
    border-bottom: none;
}

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

.value {
    color: var(--text);
    font-weight: 500;
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: capitalize;
}

.badge.high {
    background: #fee2e2;
    color: #991b1b;
}

.badge.medium {
    background: #fef3c7;
    color: #92400e;
}

.badge.low {
    background: #dbeafe;
    color: #1e40af;
}

.badge.urgent {
    background: #fecaca;
    color: #7f1d1d;
}

.description-box, .insights-box {
    background: white;
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    white-space: pre-wrap;
    line-height: 1.8;
}

.insights-box {
    color: var(--text-light);
    font-style: italic;
}

/* Related Tools */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    padding: 1.5rem;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 0.75rem;
    text-decoration: none;
    color: var(--text);
    transition: all 0.3s;
}

.tool-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.tool-card h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.tool-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
    border-top: 1px solid var(--border);
    margin-top: 2rem;
}

footer a {
    color: var(--primary);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.badge-container {
    margin-top: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    main {
        padding: 1rem;
    }

    section {
        padding: 1.5rem;
    }

    .button-group {
        flex-direction: column;
    }

    button {
        width: 100%;
    }
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

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

.results-section {
    animation: slideIn 0.4s ease-out;
}