:root {
    --accent: #FF6633;
    --accent-dark: #e8552a;
    --dark: #161B22;
    --dark-2: #1F2630;
    --bg: #0D1117;
    --card: #1F2630;
    --border: #30363D;
    --border-soft: #272F3A;
    --text: #E6EDF3;
    --gray: #C9D1D9;
    --gray-light: #8B949E;
    --white: #FFFFFF;
    --light: var(--bg);
    --green: #2EA043;
    --green-bg: rgba(46, 160, 67, .16);
    --red: #F85149;
    --red-bg: rgba(248, 81, 73, .16);
    --shadow: 0 1px 3px rgba(0,0,0,.45), 0 4px 14px rgba(0,0,0,.35);
    --radius: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--light);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }
img { max-width: 100%; }

/* ===== логин ===== */
.login-wrap { max-width: 420px; margin: 0 auto; padding: 8vh 16px 40px; }
.app-logo { font-size: 26px; font-weight: 800; letter-spacing: .5px; }
.app-logo span { color: var(--accent); }
.app-logo.sm { font-size: 18px; cursor: pointer; user-select: none; }
.app-subtitle { color: var(--gray-light); font-size: 13px; margin: 6px 0 22px; }
.login-card { padding: 22px; margin-top: 8px; }

/* ===== карточки ===== */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
.card-title { font-size: 15px; font-weight: 700; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }

/* ===== топбар ===== */
.topbar { background: var(--dark); color: var(--white); position: sticky; top: 0; z-index: 50; }
.topbar-inner { max-width: 1200px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.tabs { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.tab { background: transparent; border: 1px solid transparent; color: #B7C0CC; padding: 8px 14px; border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer; transition: .15s; }
.tab:hover { color: #fff; background: rgba(255,255,255,.08); }
.tab.active { background: var(--accent); color: #fff; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.user-chip { font-size: 13px; color: #B7C0CC; }

/* ===== контент ===== */
.content { max-width: 1200px; margin: 0 auto; padding: 20px; }
.tab-page { animation: fade .18s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ===== кнопки ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 16px; border: none; border-radius: 10px; font-size: 14px; font-weight: 600; cursor: pointer; transition: .15s; text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-outline { background: var(--card); color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { background: transparent; color: var(--gray-light); border: 1px solid transparent; }
.btn-ghost:hover { color: var(--text); background: var(--border-soft); }
.btn-block { width: 100%; margin-top: 6px; }
.btn-sm { padding: 7px 12px; font-size: 13px; }
.btn-danger { background: var(--red-bg); color: var(--red); }

/* ===== формы ===== */
.input-group { margin-bottom: 12px; }
.input-group label { display: block; font-size: 12px; font-weight: 600; color: var(--gray); margin-bottom: 5px; }
.input-group input, .input-group select {
    width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 9px;
    font-size: 14px; font-family: inherit; background: var(--card); color: var(--text);
}
.input-group input:focus, .input-group select:focus { outline: 2px solid rgba(255,102,51,.35); border-color: var(--accent); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.row { display: flex; gap: 8px; }
.row input { flex: 1; }
.error-msg { color: var(--red); font-size: 13px; margin: 8px 0; }

/* ===== сегмент продажа/возврат ===== */
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 14px; }
.seg-btn { padding: 10px; border-radius: 9px; border: 1px solid var(--border); background: var(--card); font-weight: 600; font-size: 14px; color: var(--text); cursor: pointer; }
.seg-btn.active-sale { background: var(--green-bg); border-color: var(--green); color: var(--green); }
.seg-btn.active-return { background: var(--red-bg); border-color: var(--red); color: var(--red); }

/* ===== быстрые действия ===== */
.quick-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 18px; }
.quick-btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border: none; border-radius: var(--radius); font-size: 15px; font-weight: 700; cursor: pointer; box-shadow: var(--shadow); }
.quick-sale { background: var(--green); color: #fff; }
.quick-sale:hover { background: #247b34; }
.quick-return { background: var(--red); color: #fff; }
.quick-return:hover { background: #c93a34; }
.quick-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.quick-dot.green { background: #4ade80; }
.quick-dot.red { background: #fca5a5; }
.period-select { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.period-select label { font-size: 12px; color: var(--gray); font-weight: 600; }
.period-select select { padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; background: var(--card); color: var(--text); }

/* ===== статистика ===== */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 18px; }
.stat-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px 18px; }
.stat-card .stat-label { font-size: 12px; color: var(--gray-light); font-weight: 600; text-transform: uppercase; letter-spacing: .4px; }
.stat-card .stat-value { font-size: 26px; font-weight: 800; margin-top: 6px; }
.stat-value.green { color: var(--green); }
.stat-value.red { color: var(--red); }
.stat-card .stat-sub { font-size: 12px; color: var(--gray-light); margin-top: 4px; }
.stat-card .stat-ico { }

/* ===== график ===== */
.chart-bars { display: flex; align-items: flex-end; gap: 6px; height: 190px; padding-top: 10px; }
.chart-col { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; gap: 4px; min-width: 18px; }
.chart-bar-rev { width: 60%; background: var(--accent); border-radius: 4px 4px 0 0; min-height: 2px; transition: .2s; }
.chart-bar-exp { width: 60%; background: #4A5463; border-radius: 4px 4px 0 0; min-height: 2px; transition: .2s; }
.chart-col .bar-row { display: flex; gap: 3px; align-items: flex-end; height: 160px; width: 100%; justify-content: center; }
.chart-col .month-label { font-size: 10px; color: var(--gray-light); font-weight: 600; }
.chart-legend { display: flex; gap: 14px; font-size: 12px; color: var(--gray); margin-bottom: 6px; }
.chart-legend .dot { width: 9px; height: 9px; border-radius: 2px; display: inline-block; margin-right: 5px; }
.chart-empty { color: var(--gray-light); text-align: center; padding: 60px 0; font-size: 14px; }

/* ===== две колонки ===== */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
@media (max-width: 820px) { .two-col { grid-template-columns: 1fr; } .grid2, .grid3 { grid-template-columns: 1fr; } }

/* ===== таблицы ===== */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th { text-align: left; font-size: 11.5px; text-transform: uppercase; letter-spacing: .4px; color: var(--gray-light); padding: 10px 10px; border-bottom: 2px solid var(--border-soft); white-space: nowrap; }
.table td { padding: 10px 10px; border-bottom: 1px solid var(--border-soft); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: #202832; }
.badge { display: inline-flex; padding: 3px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 700; }
.badge-sale { background: var(--green-bg); color: var(--green); }
.badge-return { background: var(--red-bg); color: var(--red); }
.amount-pos { color: var(--green); font-weight: 700; }
.amount-neg { color: var(--red); font-weight: 700; }
.row-actions { display: flex; gap: 6px; justify-content: flex-end; }
.icon-btn { width: 30px; height: 30px; border-radius: 8px; border: 1px solid var(--border); background: var(--card); cursor: pointer; font-size: 14px; display: inline-flex; align-items: center; justify-content: center; transition: .15s; }
.icon-btn:hover { border-color: var(--accent); }
.icon-btn.danger:hover { border-color: var(--red); color: var(--red); }

/* ===== тулбар ===== */
.toolbar { display: flex; gap: 8px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar select, .toolbar input[type="date"], .toolbar input[type="text"] { padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; background: var(--card); color: var(--text); }
.toolbar input[type="text"] { min-width: 200px; }
.summary-line { font-size: 13px; color: var(--gray); }

/* ===== изделия ===== */
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.product-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; display: flex; flex-direction: column; gap: 8px; }
.product-card .p-name { font-weight: 700; font-size: 15px; }
.product-card .p-meta { font-size: 12.5px; color: var(--gray-light); }
.product-card .p-price { font-size: 18px; font-weight: 800; margin-top: auto; padding-top: 8px; }
.product-card .p-price small { font-size: 12px; color: var(--gray-light); font-weight: 600; }
.product-card .p-actions { display: flex; gap: 6px; }

/* ===== материалы ===== */
.progress-track { height: 7px; border-radius: 6px; background: var(--border-soft); overflow: hidden; min-width: 90px; }
.progress-fill { height: 100%; background: var(--accent); border-radius: 6px; transition: .3s; }
.progress-fill.low { background: var(--red); }
.mat-summary { font-size: 13px; color: var(--gray); margin-left: auto; }

/* ===== устройство ===== */
.device-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 820px) { .device-grid { grid-template-columns: 1fr; } }
.lamp-demo { display: flex; gap: 30px; justify-content: center; padding: 18px 0; }
.lamp { width: 64px; height: 64px; border-radius: 50%; background: #2A3340; box-shadow: inset 0 2px 6px rgba(0,0,0,.35); transition: .3s; position: relative; }
.lamp.on-green { background: radial-gradient(circle at 35% 35%, #86efac, var(--green) 70%); box-shadow: 0 0 34px rgba(46,160,67,.65); }
.lamp.on-red { background: radial-gradient(circle at 35% 35%, #fca5a5, var(--red) 70%); box-shadow: 0 0 34px rgba(248,81,73,.65); }
.lamp-label { font-size: 12px; color: var(--gray-light); text-align: center; }
.device-queue, .device-history { margin-top: 14px; }
.device-queue h4, .device-history h4 { font-size: 13px; font-weight: 700; color: var(--gray); margin-bottom: 8px; }
.notif-item { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 8px; margin-bottom: 6px; font-size: 13px; }
.notif-item.sale { background: var(--green-bg); }
.notif-item.return { background: var(--red-bg); }
.notif-item .time { margin-left: auto; font-size: 11px; color: var(--gray-light); }
code.endpoint { display: block; background: var(--dark); color: #7dd3fc; padding: 9px 12px; border-radius: 8px; font-size: 12px; margin-bottom: 6px; word-break: break-all; white-space: pre-wrap; }
.hint { font-size: 12px; color: var(--gray-light); margin-top: 6px; line-height: 1.5; }

/* ===== модалки ===== */
.modal-overlay { position: fixed; inset: 0; background: rgba(4,7,12,.7); display: flex; align-items: flex-start; justify-content: center; padding: 4vh 16px; z-index: 100; overflow-y: auto; }
.modal { background: var(--card); border-radius: 16px; max-width: 520px; width: 100%; box-shadow: 0 24px 60px rgba(0,0,0,.5); animation: fade .18s ease; }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border-soft); }
.modal-head h3 { font-size: 16px; }
.modal-close { background: none; border: none; font-size: 16px; color: var(--gray-light); cursor: pointer; padding: 4px; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 20px; }

/* ===== тост ===== */
.toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: var(--dark); color: #fff; padding: 12px 20px; border-radius: 10px; font-size: 14px; font-weight: 600; box-shadow: 0 10px 30px rgba(0,0,0,.45); z-index: 200; }
.toast.ok { background: var(--green); }
.toast.err { background: var(--red); }

/* пустые блоки */
.empty { color: var(--gray-light); text-align: center; padding: 26px 0; font-size: 14px; }
.mobile-logo { display: none; }

/* ===== мобильный топбар (компактный) ===== */
@media (max-width: 640px) {
    .period-select { margin-left: 0; width: 100%; }
    .topbar-inner { gap: 8px 10px; padding: 8px 12px; }
    .app-logo.sm { font-size: 15px; }
    .tabs { order: 3; flex: 0 0 100%; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
    .tabs::-webkit-scrollbar { display: none; }
    .tab { padding: 7px 11px; font-size: 12.5px; white-space: nowrap; flex: 0 0 auto; }
    .topbar-right { margin-left: auto; }
    .user-chip { font-size: 12px; }
    .btn-sm { padding: 6px 10px; }
}

/* ===== тёмная тема: дашборд-карточки/таблицы ===== */
.chart-bars, .table th, .period-select select, .toolbar select, .toolbar input[type="date"], .toolbar input[type="text"] { color-scheme: dark; }
input, select, textarea { color-scheme: dark; }