:root {
    --bg: radial-gradient(circle at 10% 10%, #d8ecff 0%, #edf4ff 35%, #f6fbff 100%);
    --panel: rgba(255, 255, 255, 0.72);
    --ink: #10243e;
    --muted: #4f6786;
    --line: rgba(163, 191, 224, 0.42);
    --brand: #1d7fd8;
    --sidebar: linear-gradient(180deg, rgba(17,38,66,.92), rgba(13,28,54,.92));
    --blur: blur(18px);
}
[data-bs-theme="dark"] {
    --bg: radial-gradient(circle at 10% 10%, #1d2f4c 0%, #101a2c 35%, #0a1222 100%);
    --panel: rgba(14, 29, 50, 0.72);
    --ink: #e5edf8;
    --muted: #9fb0c7;
    --line: rgba(88, 118, 156, 0.42);
    --sidebar: linear-gradient(180deg, rgba(10,19,36,.95), rgba(8,15,29,.95));
}
body { background: var(--bg); color: var(--ink); }
.auth-shell { min-height: 100vh; display: grid; place-items: center; background: linear-gradient(135deg, #0f172a, #1d4ed8); }
.auth-card { width: min(440px, calc(100% - 32px)); background: rgba(255,255,255,.88); color: #172033; padding: 32px; border-radius: 18px; box-shadow: 0 24px 60px rgba(2, 6, 23, .28); backdrop-filter: var(--blur); }
.brand-mark { width: 52px; height: 52px; border-radius: 8px; display: grid; place-items: center; color: #fff; background: var(--brand); font-weight: 800; }
.app-shell { min-height: 100vh; display: grid; grid-template-columns: 270px 1fr; }
.sidebar { background: var(--sidebar); color: #fff; padding: 22px; position: sticky; top: 0; height: 100vh; backdrop-filter: var(--blur); }
.sidebar-brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 800; margin-bottom: 28px; }
.sidebar-brand span { width: 38px; height: 38px; border-radius: 8px; background: var(--brand); display: grid; place-items: center; }
.sidebar-nav { display: grid; gap: 6px; }
.sidebar-nav a { color: #d8e2f1; text-decoration: none; padding: 10px 12px; border-radius: 8px; }
.sidebar-nav a:hover { background: rgba(255,255,255,.1); color: #fff; }
.main-panel { min-width: 0; }
.topbar { display: flex; justify-content: space-between; gap: 20px; align-items: center; padding: 20px 28px; border-bottom: 1px solid var(--line); background: var(--panel); backdrop-filter: var(--blur); }
.topbar h1 { font-size: 1.35rem; margin: 0; font-weight: 800; }
.content { padding: 28px; padding-bottom: 80px; }
.user-chip { color: var(--muted); font-size: .9rem; }
.kpi-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.kpi-card, .panel { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 10px 24px rgba(15, 23, 42, .08); backdrop-filter: var(--blur); }
.kpi-card { padding: 18px; border-left-width: 4px; }
.kpi-card span { display: block; color: var(--muted); font-size: .9rem; }
.kpi-card strong { display: block; font-size: 1.8rem; margin-top: 8px; }
.panel { padding: 20px; }
.panel h2 { font-size: 1rem; font-weight: 800; margin-bottom: 16px; }
.toolbar { display: flex; gap: 10px; justify-content: flex-end; margin-bottom: 16px; }
.table { --bs-table-bg: transparent; --bs-table-color: var(--ink); }
.form-control, .form-select { border-radius: 12px; border-color: rgba(141,166,196,.4); background: rgba(255,255,255,.72); }
.statusbar { position: fixed; left: 270px; right: 0; bottom: 0; background: var(--sidebar); color: #e2edfb; padding: 10px 24px; font-size: .9rem; border-top: 1px solid rgba(255,255,255,.12); z-index: 1020; }
@media (max-width: 992px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar { position: static; height: auto; }
    .sidebar-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .topbar { align-items: flex-start; flex-direction: column; }
    .kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .statusbar { left: 0; font-size: .8rem; }
}
@media (max-width: 560px) {
    .content, .topbar, .sidebar { padding: 16px; }
    .kpi-grid, .sidebar-nav { grid-template-columns: 1fr; }
}