/* =========================================================================
   Аналитическая панель — стили интерфейса
   Современный дашборд: фиксированный сайдбар, KPI-карточки, графики.
   Поддержка тёмной (по умолчанию) и светлой темы.
   ========================================================================= */

:root {
    /* Тёмная тема */
    --bg:        #0b1020;
    --bg-grad:   radial-gradient(1200px 600px at 100% -10%, #1a2348 0%, transparent 55%),
                 radial-gradient(900px 500px at -10% 110%, #14213d 0%, transparent 50%);
    --surface:   #141b30;
    --surface-2: #1a2238;
    --surface-3: #212c47;
    --border:    rgba(255, 255, 255, .07);
    --border-2:  rgba(255, 255, 255, .12);

    --text:      #e9eefb;
    --muted:     #8b97b8;
    --muted-2:   #5f6b8a;

    --primary:   #6366f1;
    --primary-2: #818cf8;
    --primary-soft: rgba(99, 102, 241, .15);
    --accent:    #22d3ee;
    --success:   #34d399;
    --warning:   #fbbf24;
    --danger:    #f87171;
    --pink:      #f472b6;
    --violet:    #a78bfa;

    --radius:    16px;
    --radius-sm: 10px;
    --shadow:    0 10px 30px -12px rgba(0, 0, 0, .55);
    --shadow-lg: 0 24px 60px -20px rgba(0, 0, 0, .65);

    --sidebar-w: 256px;
    --topbar-h:  68px;

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
            'Helvetica Neue', Arial, sans-serif;
}

[data-theme="light"] {
    --bg:        #f1f4fb;
    --bg-grad:   radial-gradient(1100px 560px at 100% -10%, #e2e8ff 0%, transparent 55%),
                 radial-gradient(800px 480px at -10% 110%, #e6f7fb 0%, transparent 50%);
    --surface:   #ffffff;
    --surface-2: #f7f9fe;
    --surface-3: #eef2fb;
    --border:    rgba(15, 23, 42, .08);
    --border-2:  rgba(15, 23, 42, .14);

    --text:      #1a2238;
    --muted:     #64708f;
    --muted-2:   #94a0bd;
    --shadow:    0 10px 30px -16px rgba(40, 50, 90, .25);
    --shadow-lg: 0 24px 60px -24px rgba(40, 50, 90, .30);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}
/* Фоновый градиент вынесен в фиксированный слой — дешевле при отрисовке. */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: var(--bg-grad);
    z-index: -1;
    pointer-events: none;
}

a { color: inherit; text-decoration: none; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb {
    background: var(--surface-3); border-radius: 10px;
    border: 2px solid transparent; background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--muted-2); background-clip: content-box; }

/* ----------------------------------------------------------------- Раскладка */
.app {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    min-height: 100vh;
}

/* Затемнение под мобильным меню. На десктопе скрыто, иначе оно занимало бы
   вторую колонку сетки и сдвигало основной контент. */
.backdrop { display: none; }

/* ------------------------------------------------------------------ Сайдбар */
.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 130%);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 22px 16px;
    gap: 6px;
    z-index: 30;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 10px 20px;
    margin-bottom: 8px;
}
.brand-logo {
    width: 42px; height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: grid; place-items: center;
    box-shadow: 0 8px 20px -6px var(--primary);
    flex-shrink: 0;
}
.brand-logo svg { width: 24px; height: 24px; color: #fff; }
.brand-text b { font-size: 15px; font-weight: 700; letter-spacing: .2px; display: block; }
.brand-text span { font-size: 11.5px; color: var(--muted); }

.nav-section {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .8px;
    color: var(--muted-2);
    padding: 14px 12px 6px;
    font-weight: 600;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 12px;
    border-radius: var(--radius-sm);
    color: var(--muted);
    font-size: 14px;
    font-weight: 500;
    transition: all .18s ease;
    position: relative;
}
.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active {
    background: linear-gradient(90deg, var(--primary-soft), transparent);
    color: var(--text);
}
.nav-item.active::before {
    content: '';
    position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    width: 3px; height: 60%;
    background: linear-gradient(var(--primary), var(--accent));
    border-radius: 0 3px 3px 0;
}
.nav-item.active svg { color: var(--primary-2); }

.sidebar-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}
.user-chip {
    display: flex; align-items: center; gap: 10px;
    padding: 10px; border-radius: var(--radius-sm);
}
.user-avatar {
    width: 36px; height: 36px; border-radius: 50%;
    background: linear-gradient(135deg, var(--violet), var(--primary));
    display: grid; place-items: center; font-weight: 700; font-size: 14px;
    color: #fff; flex-shrink: 0;
}
.user-chip-info { overflow: hidden; }
.user-chip-info b { font-size: 13px; display: block; white-space: nowrap; text-overflow: ellipsis; overflow: hidden; }
.user-chip-info span { font-size: 11px; color: var(--muted); }

/* ------------------------------------------------------------------- Основное */
.main { min-width: 0; display: flex; flex-direction: column; }

.topbar {
    height: var(--topbar-h);
    position: sticky; top: 0;
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px;
    padding: 0 28px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    z-index: 20;
}
.topbar-title h1 { font-size: 20px; font-weight: 700; letter-spacing: -.2px; }
.topbar-title p { font-size: 12.5px; color: var(--muted); margin-top: 1px; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }

.content { padding: 26px 28px 40px; }

/* Подвал с указанием автора проекта */
.app-footer {
    margin-top: auto;
    padding: 16px 28px;
    border-top: 1px solid var(--border);
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
    font-size: 12.5px; color: var(--muted);
}
.app-footer b { color: var(--text); font-weight: 600; }
.app-footer .dot { color: var(--muted-2); }

/* Кнопка-бургер (моб.) */
.menu-btn {
    display: none;
    background: var(--surface-2); border: 1px solid var(--border);
    color: var(--text); width: 40px; height: 40px; border-radius: 10px;
    cursor: pointer; align-items: center; justify-content: center;
}
.menu-btn svg { width: 20px; height: 20px; }

/* ----------------------------------------------------------------- Элементы */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 9px 15px; border-radius: 10px;
    font-size: 13.5px; font-weight: 600; cursor: pointer;
    border: 1px solid var(--border-2); background: var(--surface-2);
    color: var(--text); transition: all .16s ease; white-space: nowrap;
}
.btn:hover { background: var(--surface-3); transform: translateY(-1px); }
.btn svg { width: 17px; height: 17px; }
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    border-color: transparent; color: #fff;
    box-shadow: 0 8px 20px -8px var(--primary);
}
.btn-primary:hover { box-shadow: 0 10px 26px -8px var(--primary); }

.icon-btn {
    width: 40px; height: 40px; border-radius: 10px;
    background: var(--surface-2); border: 1px solid var(--border);
    color: var(--muted); cursor: pointer;
    display: grid; place-items: center; transition: all .16s ease;
}
.icon-btn:hover { color: var(--text); background: var(--surface-3); }
.icon-btn svg { width: 19px; height: 19px; }

.select {
    appearance: none;
    background: var(--surface-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='%238b97b8' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 12px center;
    border: 1px solid var(--border-2);
    color: var(--text); border-radius: 10px;
    padding: 9px 36px 9px 14px; font-size: 13.5px; font-weight: 500;
    cursor: pointer; font-family: var(--font);
}
.select:focus { outline: none; border-color: var(--primary); }

.input {
    background: var(--surface-2); border: 1px solid var(--border-2);
    color: var(--text); border-radius: 10px; padding: 9px 14px;
    font-size: 13.5px; font-family: var(--font); width: 100%;
}
.input:focus { outline: none; border-color: var(--primary); }
.input::placeholder { color: var(--muted-2); }

/* ----------------------------------------------------------------- KPI-карточки */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 22px;
}
.kpi-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform .2s ease, border-color .2s ease;
}
.kpi-card:hover { transform: translateY(-3px); border-color: var(--border-2); }
.kpi-card::after {
    content: '';
    position: absolute; inset: 0 0 auto auto;
    width: 120px; height: 120px;
    background: radial-gradient(circle, var(--_glow, var(--primary)) 0%, transparent 70%);
    opacity: .12; transform: translate(35%, -35%);
}
.kpi-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 16px; }
.kpi-icon {
    width: 46px; height: 46px; border-radius: 13px;
    display: grid; place-items: center;
    background: var(--_soft, var(--primary-soft));
    color: var(--_glow, var(--primary));
}
.kpi-icon svg { width: 23px; height: 23px; }
.kpi-trend {
    display: inline-flex; align-items: center; gap: 3px;
    font-size: 12px; font-weight: 700;
    padding: 4px 8px; border-radius: 20px;
}
.kpi-trend svg { width: 13px; height: 13px; }
.kpi-trend.up { color: var(--success); background: rgba(52, 211, 153, .12); }
.kpi-trend.down { color: var(--danger); background: rgba(248, 113, 113, .12); }
.kpi-trend.flat { color: var(--muted); background: var(--surface-3); }
.kpi-value { font-size: 27px; font-weight: 800; letter-spacing: -.5px; line-height: 1.1; }
.kpi-label { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* ----------------------------------------------------------------- Карточки/графики */
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: 2fr 1fr; }
.grid-2e { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.mt { margin-top: 18px; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.card-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 18px 20px; border-bottom: 1px solid var(--border); gap: 12px;
}
.card-head h3 { font-size: 15px; font-weight: 700; }
.card-head p { font-size: 12px; color: var(--muted); margin-top: 2px; }
.card-head .badge-soft { font-size: 11px; }
.card-body { padding: 20px; }

.chart-box { position: relative; width: 100%; }
.chart-box.h-sm  { height: 240px; }
.chart-box.h-md  { height: 300px; }
.chart-box.h-lg  { height: 340px; }

.legend-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 14px; }
.legend-item { display: flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--muted); }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }

/* ------------------------------------------------------------------- Таблицы */
.table-wrap { overflow-x: auto; }
table.data {
    width: 100%; border-collapse: collapse; font-size: 13.5px;
}
table.data th {
    text-align: left; padding: 12px 16px;
    font-size: 11.5px; text-transform: uppercase; letter-spacing: .5px;
    color: var(--muted); font-weight: 600;
    border-bottom: 1px solid var(--border); white-space: nowrap;
}
table.data td { padding: 13px 16px; border-bottom: 1px solid var(--border); }
table.data tbody tr { transition: background .14s ease; }
table.data tbody tr:hover { background: var(--surface-2); }
table.data tbody tr:last-child td { border-bottom: none; }
.t-num { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.t-strong { font-weight: 600; }
.t-muted { color: var(--muted); }

.cell-prod { display: flex; align-items: center; gap: 11px; }
.prod-rank {
    width: 26px; height: 26px; border-radius: 8px; flex-shrink: 0;
    display: grid; place-items: center; font-size: 12px; font-weight: 700;
    background: var(--surface-3); color: var(--muted);
}
.prod-rank.top { background: var(--primary-soft); color: var(--primary-2); }

.avatar-sm {
    width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0;
    display: grid; place-items: center; font-weight: 700; font-size: 12px; color: #fff;
}

/* -------------------------------------------------------------------- Бейджи */
.badge {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 4px 10px; border-radius: 20px;
    font-size: 12px; font-weight: 600; white-space: nowrap;
}
.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-soft { background: var(--surface-3); color: var(--muted); }
.st-paid, .st-delivered { color: var(--success); background: rgba(52, 211, 153, .12); }
.st-shipped { color: var(--accent); background: rgba(34, 211, 238, .12); }
.st-pending { color: var(--warning); background: rgba(251, 191, 36, .12); }
.st-cancelled, .st-refunded { color: var(--danger); background: rgba(248, 113, 113, .12); }

/* ----------------------------------------------------------------- Фильтры */
.filters {
    display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
    margin-bottom: 18px;
}
.filters .search { flex: 1; min-width: 220px; position: relative; }
.filters .search svg {
    position: absolute; left: 13px; top: 50%; transform: translateY(-50%);
    width: 17px; height: 17px; color: var(--muted-2);
}
.filters .search input { padding-left: 40px; }

.period-tabs { display: inline-flex; gap: 4px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 4px; }
.period-tabs a {
    padding: 7px 13px; border-radius: 9px; font-size: 12.5px; font-weight: 600;
    color: var(--muted); transition: all .14s ease;
}
.period-tabs a:hover { color: var(--text); }
.period-tabs a.active { background: var(--primary); color: #fff; box-shadow: 0 6px 16px -8px var(--primary); }

/* --------------------------------------------------------------- Пагинация */
.pagination { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 16px 20px; border-top: 1px solid var(--border); flex-wrap: wrap; }
.pagination .info { font-size: 13px; color: var(--muted); }
.page-links { display: flex; gap: 6px; }
.page-links a, .page-links span {
    min-width: 36px; height: 36px; padding: 0 10px; border-radius: 9px;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 600; border: 1px solid var(--border);
    background: var(--surface-2); color: var(--muted); transition: all .14s ease;
}
.page-links a:hover { color: var(--text); background: var(--surface-3); }
.page-links .current { background: var(--primary); color: #fff; border-color: transparent; }
.page-links .disabled { opacity: .4; pointer-events: none; }

/* ----------------------------------------------------------- Мини-статистика */
.mini-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px; }
.mini-stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 18px; }
.mini-stat .v { font-size: 22px; font-weight: 800; letter-spacing: -.4px; }
.mini-stat .l { font-size: 12.5px; color: var(--muted); margin-top: 3px; }

.empty { text-align: center; padding: 50px 20px; color: var(--muted); }
.empty svg { width: 48px; height: 48px; opacity: .35; margin-bottom: 12px; }

/* progress bar (доля) */
.bar { height: 7px; border-radius: 6px; background: var(--surface-3); overflow: hidden; min-width: 90px; }
.bar > span { display: block; height: 100%; border-radius: 6px; background: linear-gradient(90deg, var(--primary), var(--accent)); }

/* ------------------------------------------------------------------ Адаптив */
@media (max-width: 1100px) {
    .grid-2, .grid-2e { grid-template-columns: 1fr; }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: 1fr; }
    .mini-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
    .app { grid-template-columns: 1fr; }
    .sidebar {
        position: fixed; left: 0; top: 0; width: 280px;
        transform: translateX(-100%); transition: transform .25s ease;
        box-shadow: var(--shadow-lg);
    }
    .sidebar.open { transform: translateX(0); }
    .menu-btn { display: inline-flex; }
    .content { padding: 18px 16px 34px; }
    .topbar { padding: 0 16px; }
    .backdrop { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 25; }
    .backdrop.show { display: block; }
}
@media (max-width: 520px) {
    .kpi-grid { grid-template-columns: 1fr; }
    .topbar-title p { display: none; }
}