:root {
    --bg: #0f1117;
    --bg-card: #1a1d27;
    --bg-hover: #242833;
    --bg-input: #12141c;
    --border: #2a2e3a;
    --text: #e4e6ed;
    --text-dim: #8b8fa3;
    --text-muted: #5a5e72;
    --green: #4CAF50;
    --green-bg: rgba(76,175,80,0.12);
    --red: #F44336;
    --red-bg: rgba(244,67,54,0.12);
    --blue: #2196F3;
    --blue-bg: rgba(33,150,243,0.12);
    --accent: #4CAF50;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 2px 12px rgba(0,0,0,0.3);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); line-height: 1.5; min-height: 100vh; }
.login-card { max-width: 380px; margin: 10vh auto; background: var(--bg-card); border-radius: var(--radius); padding: 2.5rem 2rem; border: 1px solid var(--border); box-shadow: var(--shadow); }
.login-logo { text-align: center; margin-bottom: 2rem; }
.login-logo .logo-icon { font-size: 2.5rem; display: block; margin-bottom: .5rem; }
.login-logo h1 { font-size: 1.5rem; font-weight: 700; }
.login-logo p { color: var(--text-dim); font-size: .9rem; }
.login-hint { text-align: center; color: var(--text-muted); font-size: .8rem; margin-top: 1rem; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: .85rem; color: var(--text-dim); margin-bottom: .3rem; }
.input-text, .input-date, .input-select, .form-group input { width: 100%; padding: .6rem .8rem; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-size: .9rem; outline: none; transition: border-color .2s; }
.input-text:focus, .input-date:focus, .input-select:focus, .form-group input:focus { border-color: var(--accent); }
.input-select { -webkit-appearance: none; -moz-appearance: none; appearance: none; cursor: pointer; }
.error-msg { color: var(--red); font-size: .85rem; text-align: center; margin-top: .8rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: .6rem 1.2rem; border: none; border-radius: var(--radius-sm); font-size: .9rem; font-weight: 500; cursor: pointer; transition: all .2s; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #43a047; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { opacity: .85; }
.btn-full { width: 100%; }
.btn-sm { padding: .4rem .8rem; font-size: .8rem; }
.btn-icon { background: none; border: none; color: var(--text-dim); font-size: 1.2rem; cursor: pointer; padding: .3rem; border-radius: var(--radius-sm); transition: all .2s; }
.btn-icon:hover { color: var(--text); background: var(--bg-hover); }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: .8rem 1.5rem; background: var(--bg-card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.topbar-left { display: flex; align-items: center; gap: .5rem; }
.logo-sm { font-weight: 700; font-size: 1.1rem; white-space: nowrap; }
.topbar-center { flex: 1; display: flex; justify-content: center; max-width: 300px; margin: 0 auto; }
.store-select { width: 100%; padding: .4rem .8rem; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-size: .85rem; }
.topbar-right { display: flex; gap: .3rem; }
.tabs { display: flex; gap: 0; background: var(--bg-card); border-bottom: 1px solid var(--border); overflow-x: auto; -webkit-overflow-scrolling: touch; }
.tab { padding: .7rem 1.2rem; background: none; border: none; border-bottom: 2px solid transparent; color: var(--text-dim); font-size: .85rem; font-weight: 500; cursor: pointer; white-space: nowrap; transition: all .2s; }
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.content { padding: 1.2rem; max-width: 1200px; margin: 0 auto; }
.tab-content { display: none; }
.tab-content.active { display: block; }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.metric-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.2rem; }
.metric-label { font-size: .8rem; color: var(--text-dim); margin-bottom: .3rem; text-transform: uppercase; letter-spacing: .05em; }
.metric-value { font-size: 1.8rem; font-weight: 700; }
.metric-value.refund { color: var(--red); }
.metric-change { font-size: .8rem; margin-top: .2rem; }
.metric-change.up { color: var(--green); }
.metric-change.down { color: var(--red); }
.charts-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.5rem; }
.chart-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.2rem; }
.chart-card.wide { grid-column: 1 / -1; }
.chart-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: .8rem; }
.chart-header h3, .chart-card h3 { font-size: .95rem; font-weight: 600; margin-bottom: .5rem; }
.chart-toggle { display: flex; gap: .3rem; }
.chart-toggle .btn-sm.active { background: var(--accent); color: #fff; }
.top-list { display: flex; flex-direction: column; gap: .5rem; }
.top-item { display: flex; justify-content: space-between; align-items: center; padding: .6rem .8rem; background: var(--bg-hover); border-radius: var(--radius-sm); }
.top-item .name { font-size: .9rem; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.top-item .rank { color: var(--text-muted); font-weight: 700; margin-right: .6rem; font-size: .85rem; }
.top-item .sum { font-weight: 600; color: var(--green); white-space: nowrap; margin-left: .5rem; }
.analytics-controls { margin-bottom: 1.2rem; }
.date-range { display: flex; align-items: center; gap: .5rem; margin-bottom: .8rem; flex-wrap: wrap; }
.date-range span { color: var(--text-muted); }
.analytics-tabs { display: flex; gap: .3rem; flex-wrap: wrap; }
.analytics-tabs .btn-sm { background: var(--bg-hover); color: var(--text-dim); border: none; cursor: pointer; }
.analytics-tabs .btn-sm.active { background: var(--accent); color: #fff; }
.analytics-body table { width: 100%; border-collapse: collapse; }
.analytics-body th, .analytics-body td { padding: .6rem .8rem; text-align: left; border-bottom: 1px solid var(--border); font-size: .85rem; }
.analytics-body th { color: var(--text-dim); font-weight: 600; text-transform: uppercase; font-size: .75rem; letter-spacing: .05em; }
.analytics-body tr:hover td { background: var(--bg-hover); }
.receipts-controls { display: flex; gap: .5rem; margin-bottom: 1rem; flex-wrap: wrap; align-items: center; }
.receipts-controls .input-text { width: 180px; }
.receipts-controls .input-date { width: 140px; }
.receipts-controls .input-select { width: 130px; }
.receipts-feed { display: flex; flex-direction: column; gap: .5rem; }
.receipt-row { display: grid; grid-template-columns: 90px 1fr 100px 100px 80px; gap: .5rem; padding: .7rem 1rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; transition: background .2s; align-items: center; font-size: .85rem; }
.receipt-row:hover { background: var(--bg-hover); }
.receipt-row .time { color: var(--text-dim); }
.receipt-row .type-sell { color: var(--green); font-weight: 600; }
.receipt-row .type-payback { color: var(--red); font-weight: 600; }
.receipt-row .total { font-weight: 600; text-align: right; }
.receipt-row .store { color: var(--text-dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.receipt-row .items-count { color: var(--text-muted); text-align: center; }
.pager { display: flex; justify-content: center; gap: .3rem; margin-top: 1rem; }
.pager button { padding: .4rem .7rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-dim); cursor: pointer; font-size: .8rem; }
.pager button.active { background: var(--accent); color: #fff; border-color: var(--accent); }
#products-list table { width: 100%; border-collapse: collapse; }
#products-list th, #products-list td { padding: .6rem .8rem; text-align: left; border-bottom: 1px solid var(--border); font-size: .85rem; }
#products-list th { color: var(--text-dim); font-weight: 600; text-transform: uppercase; font-size: .75rem; }
.modal { position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 200; display: flex; align-items: center; justify-content: center; }
.modal-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,.6); }
.modal-content { position: relative; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; max-width: 600px; width: 90%; max-height: 80vh; overflow-y: auto; }
.modal-close { position: absolute; top: .8rem; right: .8rem; background: none; border: none; color: var(--text-dim); font-size: 1.5rem; cursor: pointer; }
.modal-close:hover { color: var(--text); }
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1rem; }
.settings-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.2rem; }
.settings-card h3 { font-size: .95rem; font-weight: 600; margin-bottom: .8rem; padding-bottom: .5rem; border-bottom: 1px solid var(--border); }
.setting-row { margin-bottom: .6rem; display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.setting-row label { font-size: .85rem; display: flex; align-items: center; gap: .4rem; }
.setting-row .input-text { max-width: 280px; }
.mt { margin-top: .8rem; }
.code-block { display: block; padding: .5rem .8rem; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: .78rem; word-break: break-all; color: var(--accent); margin-top: .3rem; }
#api-keys-list .key-row, #webhooks-list .wh-row { display: flex; justify-content: space-between; align-items: center; padding: .5rem .6rem; background: var(--bg-hover); border-radius: var(--radius-sm); margin-bottom: .4rem; font-size: .82rem; }
.key-info, .wh-info { display: flex; flex-direction: column; gap: .1rem; }
.key-info .prefix { font-family: monospace; color: var(--accent); }
.key-info .name, .wh-info .url { color: var(--text-dim); font-size: .78rem; }
.heatmap-grid { display: grid; grid-template-columns: 60px repeat(24, 1fr); gap: 2px; font-size: .7rem; }
.heatmap-cell { aspect-ratio: 1; border-radius: 3px; display: flex; align-items: center; justify-content: center; font-size: .65rem; color: var(--text-dim); }
.heatmap-label { display: flex; align-items: center; justify-content: flex-end; padding-right: .3rem; color: var(--text-muted); font-size: .7rem; }
@media (max-width: 768px) {
    .metrics-grid { grid-template-columns: repeat(2, 1fr); }
    .charts-row { grid-template-columns: 1fr; }
    .receipt-row { grid-template-columns: 70px 1fr 80px; }
    .receipt-row .store, .receipt-row .items-count { display: none; }
    .receipts-controls { flex-direction: column; }
    .receipts-controls .input-text, .receipts-controls .input-date, .receipts-controls .input-select { width: 100%; }
    .settings-grid { grid-template-columns: 1fr; }
    .content { padding: .8rem; }
    .date-range { flex-direction: column; align-items: stretch; }
    .topbar { padding: .5rem .8rem; }
    .topbar-center { max-width: 160px; }
}
@media (max-width: 480px) {
    .metrics-grid { grid-template-columns: 1fr 1fr; gap: .5rem; }
    .metric-value { font-size: 1.3rem; }
    .tab { padding: .6rem .7rem; font-size: .78rem; }
}
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-dim { color: var(--text-dim); }
.text-center { text-align: center; }
.empty-state { text-align: center; color: var(--text-muted); padding: 3rem 1rem; font-size: .9rem; }
.spinner { display: inline-block; width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.badge { padding: .15rem .5rem; border-radius: 3px; font-size: .72rem; font-weight: 600; }
.badge-green { background: var(--green-bg); color: var(--green); }
.badge-red { background: var(--red-bg); color: var(--red); }
.badge-blue { background: var(--blue-bg); color: var(--blue); }
.products-controls { display: flex; gap: .5rem; margin-bottom: 1rem; flex-wrap: wrap; align-items: center; }