:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --muted-text: #a0a0a0;
    --primary-color: #3498db;
    --primary-hover: #2980b9;
    --secondary-color: #444;
    --secondary-hover: #555;
    --accent-color: #f1c40f;
    --pos-color: #2ecc71;
    --neg-color: #e74c3c;
    --border-color: #333;
    --shadow: 0 4px 12px rgba(0,0,0,0.5);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding-bottom: 40px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

header {
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.main-header h1 {
    font-size: 2rem;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
}

h2 {
    margin-bottom: 20px;
    font-size: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

input, select, textarea {
    width: 100%;
    padding: 12px;
    background-color: #2a2a2a;
    border: 1px solid var(--border-color);
    color: #fff;
    border-radius: 6px;
    font-size: 1rem;
}

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

.row {
    display: flex;
    gap: 15px;
}

.col {
    flex: 1;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: background 0.2s;
    font-size: 0.95rem;
}

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

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

.btn-outline { border: 1px solid var(--border-color); color: var(--text-color); }
.btn-outline:hover { background-color: var(--secondary-color); }

.btn-small { padding: 5px 12px; font-size: 0.8rem; }

/* Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th, .data-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    color: var(--muted-text);
    font-size: 0.85rem;
    text-transform: uppercase;
}

/* Utilities */
.pos { color: var(--pos-color); }
.neg { color: var(--neg-color); }

.grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
    }
    header {
        flex-direction: column;
        text-align: center;
    }
}

/* Entries List */
.entries-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.entry-item {
    border-left: 4px solid var(--primary-color);
    padding: 10px 15px;
    background-color: #252525;
    border-radius: 0 8px 8px 0;
}

.entry-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 5px;
    font-size: 0.9rem;
    align-items: center;
}

.entry-user { font-weight: bold; }
.entry-date { color: var(--muted-text); }
.entry-gain { font-family: monospace; font-weight: bold; }

.entry-comment {
    font-style: italic;
    color: #bbb;
    font-size: 0.95rem;
}

/* Chart */
.chart-container {
    display: flex;
    flex-direction: column;
}

.chart-wrapper {
    position: relative;
    height: 400px;
    width: 100%;
    min-height: 0;
}

.alert {
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
}
.alert-success { background-color: rgba(46, 204, 113, 0.2); color: #2ecc71; border: 1px solid #2ecc71; }
.alert-danger { background-color: rgba(231, 76, 60, 0.2); color: #e74c3c; border: 1px solid #e74c3c; }

.badge-prediction {
    background-color: var(--accent-color);
    color: #000;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
}

.history-month {
    margin-bottom: 30px;
}

.month-title {
    font-size: 1.1rem;
    color: var(--muted-text);
    margin-bottom: 10px;
}

.comment-cell {
    max-width: 300px;
    font-size: 0.9rem;
    color: var(--muted-text);
}

.diff-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: bold;
}

.accuracy-high { background-color: rgba(46, 204, 113, 0.2); color: #2ecc71; }
.accuracy-medium { background-color: rgba(241, 196, 15, 0.2); color: #f1c40f; }
.accuracy-low { background-color: rgba(231, 76, 60, 0.2); color: #e74c3c; }

.action-buttons {
    display: flex;
    gap: 5px;
}

.muted-text {
    color: var(--muted-text);
    opacity: 0.5;
}