:root {
    --primary: #00b386;
    --primary-dark: #008f6b;
    --primary-light: #e6f9f4;
    --danger: #e74c3c;
    --danger-light: #fdecea;
    --warning: #f39c12;
    --success: #27ae60;
    --text: #1a1a2e;
    --text-muted: #6c757d;
    --border: #e8ecef;
    --bg: #f5f7fa;
    --white: #ffffff;
    --sidebar-w: 260px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --radius: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); }
a { text-decoration: none; color: inherit; }

/* ── Sidebar ── */
.sidebar {
    position: fixed; top: 0; left: 0;
    width: var(--sidebar-w); height: 100vh;
    background: var(--white); border-right: 1px solid var(--border);
    display: flex; flex-direction: column;
    z-index: 100; transition: transform .3s;
}
.sidebar-logo {
    padding: 20px 24px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 10px;
}
.sidebar-logo img { width: 36px; }
.sidebar-logo span { font-size: 20px; font-weight: 700; color: var(--primary); }
.sidebar-nav { flex: 1; padding: 16px 0; overflow-y: auto; }
.nav-item {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 24px; cursor: pointer; border-radius: 0;
    transition: all .2s; color: var(--text-muted); font-size: 14px;
    border-left: 3px solid transparent;
}
.nav-item:hover { background: var(--primary-light); color: var(--primary); }
.nav-item.active { background: var(--primary-light); color: var(--primary); border-left-color: var(--primary); font-weight: 600; }
.nav-item i { width: 20px; text-align: center; font-size: 16px; }
.nav-section { padding: 8px 24px 4px; font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .8px; }
.sidebar-footer { padding: 16px 24px; border-top: 1px solid var(--border); }
.user-info { display: flex; align-items: center; gap: 10px; }
.user-avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--primary); color: white; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; }
.user-name { font-size: 13px; font-weight: 600; }
.user-biz { font-size: 11px; color: var(--text-muted); }

/* ── Main Content ── */
.main { margin-left: var(--sidebar-w); min-height: 100vh; }
.topbar {
    background: var(--white); border-bottom: 1px solid var(--border);
    padding: 0 24px; height: 60px;
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; z-index: 50;
}
.topbar-title { font-size: 18px; font-weight: 700; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.content { padding: 24px; }

/* ── Cards ── */
.card { background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.card-title { font-size: 15px; font-weight: 600; }

/* ── Stats Cards ── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--white); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.stat-card.green { border-left: 4px solid var(--primary); }
.stat-card.red { border-left: 4px solid var(--danger); }
.stat-card.blue { border-left: 4px solid #3498db; }
.stat-card.orange { border-left: 4px solid var(--warning); }
.stat-label { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.stat-value { font-size: 24px; font-weight: 700; }
.stat-value.green { color: var(--primary); }
.stat-value.red { color: var(--danger); }
.stat-sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ── Buttons ── */
.btn { padding: 9px 18px; border-radius: 8px; border: none; cursor: pointer; font-size: 14px; font-weight: 500; display: inline-flex; align-items: center; gap: 6px; transition: all .2s; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); color: white; }
.btn-outline { background: transparent; border: 1.5px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-icon { width: 36px; height: 36px; padding: 0; justify-content: center; border-radius: 8px; }

/* ── Table ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { background: var(--bg); padding: 10px 14px; text-align: left; font-size: 12px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; }
td { padding: 12px 14px; border-bottom: 1px solid var(--border); font-size: 14px; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg); }

/* ── Badge ── */
.badge { padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.badge-green { background: #e6f9f4; color: var(--primary); }
.badge-red { background: var(--danger-light); color: var(--danger); }
.badge-orange { background: #fff3e0; color: var(--warning); }
.badge-blue { background: #e3f2fd; color: #1976d2; }

/* ── Form ── */
.form-group { margin-bottom: 16px; }
label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; }
input, select, textarea {
    width: 100%; padding: 10px 14px; border: 1.5px solid var(--border);
    border-radius: 8px; font-size: 14px; outline: none; transition: border .2s;
    background: var(--white);
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Modal ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 200; display: none; align-items: center; justify-content: center; }
.modal-overlay.open { display: flex; }
.modal { background: var(--white); border-radius: var(--radius); width: 90%; max-width: 500px; max-height: 90vh; overflow-y: auto; }
.modal-header { padding: 20px 24px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.modal-title { font-size: 16px; font-weight: 700; }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }

/* ── Search ── */
.search-box { position: relative; }
.search-box input { padding-left: 36px; }
.search-box i { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-muted); }

/* ── Party Card ── */
.party-list { display: flex; flex-direction: column; gap: 8px; }
.party-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 16px; background: var(--white); border-radius: 10px;
    border: 1.5px solid var(--border); cursor: pointer; transition: all .2s;
}
.party-item:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.party-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; }
.party-info { flex: 1; margin-left: 12px; }
.party-name { font-weight: 600; font-size: 14px; }
.party-phone { font-size: 12px; color: var(--text-muted); }
.party-balance { text-align: right; }
.balance-lena { color: var(--primary); font-weight: 700; font-size: 15px; }
.balance-dena { color: var(--danger); font-weight: 700; font-size: 15px; }

/* ── Tabs ── */
.tabs { display: flex; gap: 4px; background: var(--bg); padding: 4px; border-radius: 10px; margin-bottom: 20px; }
.tab { flex: 1; padding: 8px; text-align: center; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 500; color: var(--text-muted); transition: all .2s; }
.tab.active { background: var(--white); color: var(--primary); box-shadow: var(--shadow); }

/* ── Alert ── */
.alert { padding: 12px 16px; border-radius: 8px; font-size: 13px; margin-bottom: 16px; }
.alert-success { background: var(--primary-light); color: var(--primary-dark); }
.alert-danger { background: var(--danger-light); color: var(--danger); }

/* ── Loader ── */
.loader { display: flex; align-items: center; justify-content: center; padding: 40px; }
.spinner { width: 32px; height: 32px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Empty State ── */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state i { font-size: 48px; margin-bottom: 12px; opacity: .4; }
.empty-state p { font-size: 14px; }

/* ── Responsive ── */
.hamburger { display: none; background: none; border: none; font-size: 22px; cursor: pointer; }
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main { margin-left: 0; }
    .hamburger { display: block; }
    .form-row { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .content { padding: 16px; }
}

/* ── QR Page ── */
.qr-container { max-width: 800px; margin: 0 auto; }
.qr-box { text-align: center; padding: 30px; }
.qr-box img { width: 200px; height: 200px; }

/* ── Print ── */
@media print {
    .sidebar, .topbar, .btn, .modal-overlay { display: none !important; }
    .main { margin-left: 0; }
}