:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --success: #059669;
    --success-light: #d1fae5;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --warning: #d97706;
    --warning-light: #fef3c7;
    --sidebar-bg: #0f172a;
    --sidebar-text: #94a3b8;
    --sidebar-active: #e2e8f0;
    --bg: #f1f5f9;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.1);
    --radius: 10px;
}

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

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

/* Layout */
.layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 200;
    transition: transform 0.3s;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-logo { font-size: 24px; }

.sidebar-title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.3px;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(255,255,255,0.06);
    color: #e2e8f0;
}

.nav-item.active {
    background: rgba(37, 99, 235, 0.15);
    color: #fff;
    border-left-color: var(--primary);
}

.nav-icon { font-size: 16px; width: 20px; text-align: center; }

.sidebar-footer {
    padding: 12px 0;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.back-link { font-size: 13px !important; }

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 240px;
    min-height: 100vh;
}

/* Top Bar */
.topbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--text);
}

.page-title {
    flex: 1;
    font-size: 18px;
    font-weight: 600;
}

.env-badge {
    background: var(--warning-light);
    color: var(--warning);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* Tabs */
.tab-content {
    display: none;
    padding: 24px;
    animation: fadeIn 0.2s ease;
}

.tab-content.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    text-align: center;
}

.stat-icon { font-size: 28px; margin-bottom: 8px; }

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

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

/* Panels */
.panel {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

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

.panel-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.panel-header .panel-title { margin-bottom: 0; }

/* Two Column Layout */
.two-col {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 16px;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th {
    text-align: left;
    padding: 10px 12px;
    background: var(--bg);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
}

.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.data-table tr:hover td { background: rgba(37, 99, 235, 0.03); }

.table-wrap { overflow-x: auto; }

/* Card Number Display */
.card-num {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 13px;
    letter-spacing: 0.5px;
}

.card-num-masked {
    color: var(--text-secondary);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.badge-uzcard { background: #dbeafe; color: #1d4ed8; }
.badge-humo { background: #fef3c7; color: #92400e; }
.badge-visa { background: #ede9fe; color: #5b21b6; }
.badge-mastercard { background: #fce7f3; color: #9d174d; }
.badge-success { background: var(--success-light); color: var(--success); }
.badge-failed { background: var(--danger-light); color: var(--danger); }
.badge-pending { background: var(--warning-light); color: var(--warning); }

/* Clients Grid */
.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 16px;
}

.client-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    transition: box-shadow 0.15s;
}

.client-card:hover { box-shadow: var(--shadow-lg); }

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

.client-name {
    font-size: 16px;
    font-weight: 600;
}

.client-id {
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg);
    padding: 2px 8px;
    border-radius: 4px;
}

.client-phone {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.client-cards-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mini-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--bg);
    border-radius: 6px;
    font-size: 13px;
}

.mini-card-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.mini-card-balance {
    font-weight: 600;
    color: var(--success);
}

/* Forms */
.form-group {
    margin-bottom: 14px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text);
    background: #fff;
    transition: border-color 0.2s;
    outline: none;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-hint {
    display: block;
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover:not(:disabled) { background: var(--primary-dark); }

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

.btn-secondary:hover:not(:disabled) { background: var(--border); }

.btn-sm { padding: 5px 10px; font-size: 12px; }

.btn-block { width: 100%; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: #b91c1c; }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover:not(:disabled) { background: #047857; }

/* Action Buttons in Table */
.action-btns {
    display: flex;
    gap: 4px;
}

/* Transfer Result */
.transfer-result {
    margin-top: 16px;
    padding: 12px;
    border-radius: 8px;
    font-size: 13px;
}

.transfer-result.success {
    background: var(--success-light);
    color: var(--success);
    border: 1px solid #a7f3d0;
}

.transfer-result.failed {
    background: var(--danger-light);
    color: var(--danger);
    border: 1px solid #fca5a5;
}

.sender-info, .receiver-info {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    padding: 6px 8px;
    background: var(--bg);
    border-radius: 4px;
    display: none;
}

.sender-info.show, .receiver-info.show { display: block; }

/* Modals */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 500;
    padding: 20px;
}

.modal-overlay.active { display: flex; }

.modal {
    background: var(--card-bg);
    border-radius: var(--radius);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-sm { max-width: 380px; }

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 { font-size: 16px; }

.modal-close {
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0 4px;
}

.modal form { padding: 20px; }

/* Toast */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 600;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    color: #fff;
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease;
    max-width: 360px;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }

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

/* Amount Display */
.amount {
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.amount-positive { color: var(--success); }
.amount-negative { color: var(--danger); }

/* Empty State */
.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 30px;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 1024px) {
    .two-col {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .tab-content {
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .clients-grid {
        grid-template-columns: 1fr;
    }
}

/* ═══ Antifraud & Ledger ═══ */
.risk-badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 600; }
.risk-low { background: #d4edda; color: #155724; }
.risk-medium { background: #fff3cd; color: #856404; }
.risk-high { background: #f8d7da; color: #721c24; }
.dir-debit { color: #e74c3c; font-weight: 600; }
.dir-credit { color: #27ae60; font-weight: 600; }
.status-badge.status-active { background: #d4edda; color: #155724; }
.status-badge.status-verified { background: #cce5ff; color: #004085; }
.status-badge.status-expired { background: #e2e3e5; color: #383d41; }
.status-badge.status-failed { background: #f8d7da; color: #721c24; }