:root {
    --bg-color: #0f1115;
    --card-bg: #1a1d24;
    --input-bg: #252932;
    --text-primary: #ffffff;
    --text-secondary: #a0a4ac;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --long-color: #10b981;
    --short-color: #ef4444;
    --border-color: #2e333d;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem;
}

.app-container {
    width: 100%;
    max-width: 900px;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

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

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.accent {
    color: var(--accent-color);
}

.card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

h2 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

input {
    width: 100%;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s;
}

input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.global-settings {
    margin-bottom: 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.exchanges-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.badge {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    text-transform: uppercase;
}

.long-badge {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--long-color);
}

.short-badge {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--short-color);
}

.primary-btn {
    width: 100%;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

.results-section {
    margin-top: 3rem;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.summary-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.summary-card {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.summary-card .label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.summary-card .value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.table-container {
    background-color: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: rgba(255, 255, 255, 0.02);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td {
    color: var(--text-primary);
}

tr:last-child td {
    border-bottom: none;
}

.highlight-good {
    color: var(--long-color);
    font-weight: 600;
}

.highlight-bad {
    color: var(--short-color);
    font-weight: 600;
}

.tooltip {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: var(--border-color);
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-left: 0.5rem;
    cursor: help;
}

@media (max-width: 768px) {
    .global-settings, .exchanges-grid, .summary-cards {
        grid-template-columns: 1fr;
    }
    
    .app-container {
        padding: 0;
    }
}