:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-800: #1f2937;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--gray-800);
    line-height: 1.6;
}

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

header {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--white);
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

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

.input-section {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.input-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--gray-800);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--gray-600);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--gray-600);
}

.form-group small a {
    color: var(--primary-color);
    text-decoration: none;
}

.form-group small a:hover {
    text-decoration: underline;
}

button {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background: var(--secondary-color);
}

button:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
}

.results-section {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.results-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--gray-800);
}

.results-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.summary-card {
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
}

.summary-card.buy-signals {
    background: linear-gradient(135deg, #10b981, #059669);
    color: var(--white);
}

.summary-card.sell-signals {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: var(--white);
}

.summary-card.no-signals {
    background: linear-gradient(135deg, #6b7280, #4b5563);
    color: var(--white);
}

.summary-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.signal-count {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.signal-list {
    font-size: 0.9rem;
    opacity: 0.9;
}

.detailed-results {
    border-top: 2px solid var(--gray-200);
    padding-top: 2rem;
}

.stock-result {
    background: var(--gray-100);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border-left: 4px solid var(--gray-300);
}

.stock-result.buy-signal {
    border-left-color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
}

.stock-result.sell-signal {
    border-left-color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
}

.stock-result.no-signal {
    border-left-color: var(--gray-300);
}

.stock-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.stock-symbol {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
}

.signal-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.signal-badge.buy {
    background: var(--success-color);
    color: var(--white);
}

.signal-badge.sell {
    background: var(--danger-color);
    color: var(--white);
}

.signal-badge.none {
    background: var(--gray-300);
    color: var(--gray-600);
}

.stock-message {
    color: var(--gray-600);
    font-size: 0.9rem;
}

.progress-section {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.progress-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--gray-800);
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--gray-200);
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    text-align: center;
    color: var(--gray-600);
    font-weight: 500;
}

footer {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    margin-top: 2rem;
}

.strategy-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--gray-800);
}

.strategy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.strategy-item {
    padding: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
}

.strategy-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--gray-800);
}

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

.disclaimer {
    text-align: center;
    padding: 1rem;
    background: var(--gray-100);
    border-radius: 8px;
    color: var(--gray-600);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .results-summary {
        grid-template-columns: 1fr;
    }
    
    .strategy-grid {
        grid-template-columns: 1fr;
    }
    
    .stock-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}