:root {
    --bg-primary: #0b0e11;
    --bg-secondary: #1e2329;
    --bg-tertiary: #2b3139;
    --bg-card: #181a20;
    --text-primary: #eaecef;
    --text-secondary: #848e9c;
    --text-muted: #5e6673;
    --accent: #f0b90b;
    --accent-hover: #d4a50a;
    --green: #0ecb81;
    --green-bg: rgba(14, 203, 129, 0.1);
    --red: #f6465d;
    --red-bg: rgba(246, 70, 93, 0.1);
    --blue: #1e90ff;
    --border: #2b3139;
    --radius: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    display: flex;
    align-items: center;
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    margin-right: 32px;
}

.header-prices {
    display: flex;
    gap: 24px;
    margin-left: auto;
    margin-right: 16px;
}

#lang-toggle {
    font-size: 12px;
    padding: 4px 12px;
    white-space: nowrap;
}

.price-tag {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.price-tag .symbol { color: var(--text-secondary); }
.price-tag .value { font-weight: 600; font-variant-numeric: tabular-nums; }

/* Tabs */
.tab-bar {
    display: flex;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
}

.tab-btn {
    padding: 12px 20px;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* Main */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.stat-value.green { color: var(--green); }
.stat-value.red { color: var(--red); }

/* Table */
.table-wrap { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

th {
    text-align: left;
    padding: 10px 12px;
    color: var(--text-secondary);
    font-weight: 500;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

tr:hover td { background: var(--bg-secondary); }

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-running { background: var(--green-bg); color: var(--green); }
.badge-stopped { background: var(--bg-tertiary); color: var(--text-secondary); }
.badge-error { background: var(--red-bg); color: var(--red); }
.badge-paused { background: rgba(30, 144, 255, 0.1); color: var(--blue); }
.badge-long { background: var(--green-bg); color: var(--green); }
.badge-short { background: var(--red-bg); color: var(--red); }

/* Buttons */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-success { background: var(--green); color: #fff; }
.btn-success:hover { opacity: 0.85; }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { opacity: 0.85; }
.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
}
.btn-outline:hover { border-color: var(--text-secondary); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-input, .form-select {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.form-input:focus, .form-select:focus {
    border-color: var(--accent);
}

.form-input::placeholder { color: var(--text-muted); }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
}

/* Preview table */
.preview-table {
    font-size: 12px;
}

.preview-table td, .preview-table th {
    padding: 6px 8px;
}

/* Bot detail */
.detail-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.detail-back {
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
}

.detail-back:hover { color: var(--text-primary); }

/* DCA ladder visualization */
.ladder {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ladder-row {
    display: grid;
    grid-template-columns: 40px 1fr 100px 100px;
    gap: 8px;
    align-items: center;
    padding: 6px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.ladder-row.filled { background: var(--green-bg); }
.ladder-row.pending { background: var(--bg-secondary); }
.ladder-row.tp { background: rgba(240, 185, 11, 0.1); border: 1px dashed var(--accent); }
.ladder-row.sl { background: var(--red-bg); border: 1px dashed var(--red); }

.ladder-bar {
    height: 4px;
    border-radius: 2px;
    background: var(--bg-tertiary);
    overflow: hidden;
}

.ladder-bar-fill {
    height: 100%;
    border-radius: 2px;
    background: var(--green);
}

/* Toast */
.toast-container {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 16px;
    font-size: 13px;
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
    max-width: 360px;
}

.toast.success { border-left: 3px solid var(--green); }
.toast.error { border-left: 3px solid var(--red); }
.toast.info { border-left: 3px solid var(--blue); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Binance-style form */
.binance-form {
    max-width: 480px;
    margin-bottom: 40vh;
}

/* Symbol row with live price */
.symbol-select-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.symbol-live-price {
    font-size: 14px;
    font-weight: 600;
    color: var(--green);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

/* Direction toggle buttons */
.direction-toggle {
    display: flex;
    gap: 0;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.dir-btn {
    flex: 1;
    padding: 10px 0;
    border: none;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.dir-btn.dir-long.active {
    background: var(--green);
    color: #fff;
}

.dir-btn.dir-short.active {
    background: var(--red);
    color: #fff;
}

/* Form sections */
.form-section {
    border-top: 1px solid var(--border);
    padding-top: 16px;
    margin-top: 16px;
    margin-bottom: 8px;
}

.form-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.form-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.leverage-badge-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Input with suffix (%, USDT, x) */
.input-suffix-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.input-suffix-wrap .form-input {
    padding-right: 48px;
}

.input-suffix {
    position: absolute;
    right: 12px;
    color: var(--text-muted);
    font-size: 13px;
    pointer-events: none;
}

/* Info summary */
.form-info-summary {
    background: var(--bg-secondary);
    border-radius: 4px;
    padding: 12px 16px;
    margin: 16px 0;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
}

.info-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.info-value {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

/* Advanced toggle */
.form-section-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: 4px 0;
    user-select: none;
}

.form-section-toggle span:first-child {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.toggle-arrow {
    font-size: 10px;
    color: var(--text-secondary);
    transition: transform 0.2s;
}

.toggle-arrow.open {
    transform: rotate(180deg);
}

.advanced-panel {
    padding-top: 12px;
}

/* Subsections inside advanced */
.form-subsection {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

.form-subsection:last-child {
    border-bottom: none;
}

/* Form action buttons */
.form-actions {
    display: flex;
    gap: 8px;
    margin-top: 20px;
}

.form-actions .btn {
    padding: 12px 0;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-wrap: wrap;
        height: auto;
        padding: 8px 12px;
        gap: 4px;
    }
    .header-logo { margin-right: auto; }
    #lang-toggle { order: 0; }
    .header-prices {
        width: 100%;
        margin: 0;
        gap: 12px;
        order: 1;
    }
    .tab-bar { padding: 0 12px; overflow-x: auto; }
    .tab-btn { padding: 10px 14px; font-size: 13px; white-space: nowrap; }
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .main-content { padding: 16px; }
    .binance-form { max-width: 100%; }
}

/* Checkbox */
.form-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state h3 {
    margin-bottom: 8px;
    color: var(--text-primary);
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    min-width: 400px;
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
}

.modal h3 { margin-bottom: 16px; }
.modal-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 20px;
}