:root {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent-blue: #58a6ff;
    --accent-green: #3fb950;
    --accent-red: #f85149;
    --border-color: #30363d;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

#app {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    padding-bottom: 80px;
}

header {
    margin-bottom: 24px;
    text-align: center;
}

header h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

header p {
    color: var(--accent-blue);
    font-weight: 600;
}

nav {
    display: flex;
    background: var(--card-bg);
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.nav-btn {
    flex: 1;
    padding: 10px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
}

.nav-btn.active {
    background: var(--accent-blue);
    color: white;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 16px;
    animation: fadeIn 0.3s ease-out;
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.card-title {
    font-weight: 600;
    font-size: 16px;
    flex: 1;
    padding-right: 12px;
}

.badge {
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-buy { background: rgba(63, 185, 80, 0.15); color: var(--accent-green); }
.badge-sell { background: rgba(248, 81, 73, 0.15); color: var(--accent-red); }

.card-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.info-item label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.info-item span {
    font-weight: 600;
    font-size: 14px;
}

.filters-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    animation: fadeIn 0.3s ease-out;
}

.filter-input {
    flex: 1 1 200px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
    -webkit-appearance: none;
}

.filter-input:focus {
    border-color: var(--accent-blue);
}

select.filter-input {
    flex: 1 1 120px;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238b949e' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: calc(100% - 12px) center;
    padding-right: 32px;
}

@media (max-width: 480px) {
    #app {
        padding: 12px;
    }
    
    header h1 {
        font-size: 20px;
    }
    
    .nav-btn {
        padding: 8px 4px;
        font-size: 13px;
    }
    
    .card {
        padding: 12px;
        border-radius: 12px;
    }
    
    .card-title {
        font-size: 14px;
    }
    
    .info-item span {
        font-size: 13px;
    }
}

.loader {
    width: 48px;
    height: 48px;
    border: 5px solid var(--card-bg);
    border-bottom-color: var(--accent-blue);
    border-radius: 50%;
    display: none;
    margin: 40px auto;
    animation: rotation 1s linear infinite;
}

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

.leader-item {
    display: flex;
    align-items: center;
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.leader-rank {
    width: 32px;
    font-weight: 700;
    color: var(--accent-blue);
}

.leader-info {
    flex: 1;
}

.leader-name {
    font-weight: 600;
}

.leader-pnl {
    font-weight: 700;
    color: var(--accent-green);
}