:root {
    --bg: #f4f6f8;
    --bg-accent: #eef3f6;
    --panel: #ffffff;
    --ink: #0f172a;
    --muted: #64748b;
    --line: #e2e8f0;
    --line-strong: #cbd5e1;
    --accent: #0d9488;
    --accent-deep: #0f766e;
    --accent-soft: rgba(13, 148, 136, 0.1);
    --danger: #dc2626;
    --ok: #059669;
    --warn: #d97706;
    --sidebar: #0b1220;
    --sidebar-2: #111827;
    --sidebar-text: #cbd5e1;
    --sidebar-active: #f8fafc;
    --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.04);
    --radius: 16px;
    --radius-sm: 10px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: "Vazirmatn", "Tahoma", sans-serif;
    background:
        radial-gradient(900px 420px at 100% -10%, rgba(13, 148, 136, 0.08), transparent 55%),
        radial-gradient(700px 380px at -10% 20%, rgba(15, 23, 42, 0.04), transparent 50%),
        linear-gradient(180deg, #f7f9fb 0%, var(--bg) 40%, var(--bg-accent) 100%);
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
}

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

.shell {
    display: grid;
    grid-template-columns: 272px 1fr;
    min-height: 100vh;
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow: auto;
    background:
        linear-gradient(180deg, rgba(13,148,136,.12), transparent 28%),
        linear-gradient(180deg, var(--sidebar) 0%, var(--sidebar-2) 100%);
    color: var(--sidebar-text);
    padding: 1.35rem 1rem 1.5rem;
    border-left: 1px solid rgba(255,255,255,.04);
}

.brand {
    display: flex;
    align-items: center;
    gap: .85rem;
    padding: .35rem .55rem 1.15rem;
    border-bottom: 1px solid rgba(148,163,184,.15);
    margin-bottom: 1rem;
}

.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: linear-gradient(145deg, #14b8a6, #0f766e);
    color: white;
    font-weight: 800;
    letter-spacing: -.04em;
    box-shadow: 0 8px 20px rgba(13,148,136,.35);
}

.brand-text strong {
    display: block;
    color: #f8fafc;
    font-size: 1.05rem;
    font-weight: 800;
}

.brand-text span {
    display: block;
    margin-top: .15rem;
    font-size: .78rem;
    color: #94a3b8;
}

.nav {
    display: grid;
    gap: .2rem;
}

.nav-section {
    margin: .9rem .55rem .35rem;
    font-size: .7rem;
    letter-spacing: .08em;
    color: #64748b;
    font-weight: 700;
}

.nav a {
    display: flex;
    align-items: center;
    gap: .7rem;
    padding: .72rem .8rem;
    border-radius: 12px;
    color: #cbd5e1;
    font-size: .92rem;
    font-weight: 600;
    transition: background .18s ease, color .18s ease, transform .18s ease;
}

.nav a .dot {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: #475569;
    flex: 0 0 auto;
}

.nav a:hover {
    background: rgba(255,255,255,.05);
    color: #f8fafc;
}

.nav a.active {
    background: linear-gradient(90deg, rgba(13,148,136,.22), rgba(13,148,136,.08));
    color: var(--sidebar-active);
    box-shadow: inset 3px 0 0 #14b8a6;
}

.nav a.active .dot { background: #2dd4bf; }

.main {
    padding: 1.35rem 1.5rem 2rem;
    min-width: 0;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.topbar h1 {
    margin: 0;
    font-size: 1.55rem;
    font-weight: 800;
    letter-spacing: -.03em;
}

.topbar .sub {
    margin-top: .35rem;
    color: var(--muted);
    font-size: .92rem;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: .65rem;
}

.user-chip {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    padding: .45rem .7rem .45rem .45rem;
    background: white;
    border: 1px solid var(--line);
    border-radius: 999px;
    box-shadow: var(--shadow);
    font-size: .86rem;
    font-weight: 600;
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    background: var(--accent-soft);
    color: var(--accent-deep);
    font-size: .75rem;
    font-weight: 800;
}

.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.1rem 1.15rem;
    box-shadow: var(--shadow);
}

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: .9rem;
}

.card-head h2 {
    margin: 0;
    font-size: 1rem;
    font-weight: 800;
}

.card-head .hint {
    color: var(--muted);
    font-size: .8rem;
}

.grid { display: grid; gap: 1rem; }
.grid.stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.charts-2 { grid-template-columns: 1.6fr 1fr; }
.grid.charts-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.kpi {
    position: relative;
    overflow: hidden;
}

.kpi::after {
    content: "";
    position: absolute;
    inset: auto -20% -40% auto;
    width: 120px;
    height: 120px;
    border-radius: 999px;
    background: var(--accent-soft);
    pointer-events: none;
}

.kpi .label {
    color: var(--muted);
    font-size: .82rem;
    font-weight: 600;
}

.kpi .value {
    display: block;
    margin-top: .55rem;
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -.02em;
}

.kpi .meta {
    margin-top: .55rem;
    font-size: .78rem;
    color: var(--muted);
}

.kpi.accent .value { color: var(--accent-deep); }
.kpi.ok .value { color: var(--ok); }
.kpi.warn .value { color: var(--warn); }

.chart-box {
    position: relative;
    height: 280px;
}

.chart-box.sm { height: 240px; }

.muted { color: var(--muted); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    border: 0;
    border-radius: 12px;
    padding: .72rem 1rem;
    background: linear-gradient(180deg, #14b8a6, var(--accent-deep));
    color: white;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 8px 18px rgba(13,148,136,.25);
    transition: transform .15s ease, filter .15s ease;
}

.btn:hover { filter: brightness(1.03); transform: translateY(-1px); }
.btn.secondary {
    background: white;
    color: var(--ink);
    border: 1px solid var(--line);
    box-shadow: none;
}
.btn.danger { background: var(--danger); box-shadow: none; }
.btn.ghost {
    background: transparent;
    color: var(--muted);
    box-shadow: none;
    border: 1px solid transparent;
}

input, select, textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: .8rem .9rem;
    background: #fff;
    font: inherit;
    transition: border-color .15s ease, box-shadow .15s ease;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: rgba(13,148,136,.55);
    box-shadow: 0 0 0 4px rgba(13,148,136,.12);
}

label { display: block; margin-bottom: .4rem; font-weight: 700; font-size: .9rem; }
.field { margin-bottom: 1rem; }

.alert {
    padding: .9rem 1rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    font-size: .92rem;
}
.alert.ok { background: #ecfdf5; border-color: #a7f3d0; color: var(--ok); }
.alert.err { background: #fef2f2; border-color: #fecaca; color: var(--danger); }

table { width: 100%; border-collapse: collapse; }
th, td {
    padding: .85rem .55rem;
    border-bottom: 1px solid var(--line);
    text-align: right;
    vertical-align: middle;
}
th {
    color: var(--muted);
    font-weight: 700;
    font-size: .78rem;
    letter-spacing: .02em;
}
tbody tr:hover { background: #f8fafc; }

.badge {
    display: inline-flex;
    align-items: center;
    padding: .22rem .55rem;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 700;
    background: #f1f5f9;
    color: #334155;
}
.badge.ok { background: #ecfdf5; color: #047857; }
.badge.warn { background: #fffbeb; color: #b45309; }
.badge.danger { background: #fef2f2; color: #b91c1c; }
.badge.teal { background: #f0fdfa; color: #0f766e; }

.empty {
    padding: 1.5rem;
    text-align: center;
    color: var(--muted);
}

.login-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.25rem;
    background:
        radial-gradient(700px 420px at 15% 20%, rgba(13,148,136,.18), transparent 55%),
        radial-gradient(800px 480px at 90% 80%, rgba(15,23,42,.12), transparent 50%),
        #0b1220;
}

.login-card {
    width: min(420px, 100%);
    background: rgba(255,255,255,.97);
    border: 1px solid rgba(255,255,255,.4);
    backdrop-filter: blur(10px);
}

.login-card .brand-text strong { color: var(--ink); }
.login-card .brand-text span { color: var(--muted); }

.link-soft {
    color: var(--accent-deep);
    font-weight: 700;
}

@media (max-width: 1100px) {
    .grid.stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid.charts-2, .grid.charts-3 { grid-template-columns: 1fr; }
}

@media (max-width: 960px) {
    .shell { grid-template-columns: 1fr; }
    .sidebar {
        position: relative;
        height: auto;
        border-left: 0;
    }
    .nav {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .nav-section { grid-column: 1 / -1; }
    .main { padding: 1rem; }
    .grid.stats { grid-template-columns: 1fr; }
}