:root {
  --bg: #f4f6f9; --panel: #ffffff; --border: #e3e8ef;
  --text: #1a2332; --muted: #64748b;
  --primary: #0e6ba8; --primary-dark: #0a5586;
  --red: #d64545; --orange: #e8871e; --yellow: #d9a514; --green: #2e9e5b; --blue: #3b82c4;
  --sidebar: #12283d; --sidebar-text: #b8c7d9;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(16,30,54,.08), 0 1px 2px rgba(16,30,54,.04);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }
#layout { display: flex; min-height: 100vh; }

/* ---------- Sidebar ---------- */
#sidebar { width: 240px; background: var(--sidebar); color: var(--sidebar-text); display: flex; flex-direction: column; position: fixed; top:0; bottom:0; left:0; overflow-y: auto; z-index: 10; }
.brand { display: flex; gap: 10px; align-items: center; padding: 18px 16px; border-bottom: 1px solid rgba(255,255,255,.08); }
.brand-icon { font-size: 26px; }
.brand-title { font-weight: 700; color: #fff; font-size: 15px; }
.brand-sub { font-size: 11px; opacity: .75; }
.nav-group { flex: 1; padding: 10px 8px; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 8px; cursor: pointer; font-size: 13.5px; margin-bottom: 2px; user-select: none; }
.nav-item:hover { background: rgba(255,255,255,.07); color: #fff; }
.nav-item.active { background: var(--primary); color: #fff; font-weight: 600; }
.nav-sep { font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em; opacity: .5; padding: 12px 12px 4px; }
.nav-footer { padding: 12px; border-top: 1px solid rgba(255,255,255,.08); }
.nav-footer label { font-size: 11px; opacity: .7; display: block; margin-bottom: 4px; }
.nav-footer input { width: 100%; padding: 7px 9px; border-radius: 6px; border: 1px solid rgba(255,255,255,.15); background: rgba(255,255,255,.08); color: #fff; font-size: 13px; }

/* ---------- Main ---------- */
#main { flex: 1; margin-left: 240px; padding: 22px 26px; max-width: calc(100vw - 240px); }
h1 { font-size: 21px; margin-bottom: 4px; }
h2 { font-size: 16px; margin: 18px 0 10px; }
.page-sub { color: var(--muted); font-size: 13px; margin-bottom: 18px; }
.loading { padding: 60px; text-align: center; color: var(--muted); }

/* ---------- Tarjetas ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; margin-bottom: 20px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); cursor: pointer; transition: transform .1s, box-shadow .1s; }
.card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(16,30,54,.12); }
.card.no-click { cursor: default; }
.card .card-label { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.card .card-value { font-size: 24px; font-weight: 700; margin-top: 6px; }
.card .card-extra { font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.card.c-red .card-value { color: var(--red); }
.card.c-orange .card-value { color: var(--orange); }
.card.c-yellow .card-value { color: var(--yellow); }
.card.c-green .card-value { color: var(--green); }
.card.c-blue .card-value { color: var(--blue); }

/* ---------- Paneles y tablas ---------- */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; margin-bottom: 18px; }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.toolbar input[type=text], .toolbar input[type=date], .toolbar input[type=month], .toolbar select, .toolbar input[type=number] {
  padding: 7px 10px; border: 1px solid var(--border); border-radius: 7px; font-size: 13px; background: #fff; color: var(--text);
}
.toolbar .spacer { flex: 1; }
.btn { padding: 7px 14px; border-radius: 7px; border: 1px solid var(--border); background: #fff; cursor: pointer; font-size: 13px; color: var(--text); }
.btn:hover { background: #f1f5f9; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn.small { padding: 3px 9px; font-size: 12px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; padding: 8px 10px; background: #f8fafc; border-bottom: 2px solid var(--border); font-size: 11.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); white-space: nowrap; cursor: pointer; user-select: none; }
th.num, td.num { text-align: right; }
td { padding: 7px 10px; border-bottom: 1px solid var(--border); }
tr:hover td { background: #f8fafc; }
tr.clickable { cursor: pointer; }
.pill { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 600; white-space: nowrap; }
.p-red { background: #fde8e8; color: #b32424; }
.p-orange { background: #fdf0e0; color: #b0620b; }
.p-yellow { background: #fdf7dc; color: #8f6d08; }
.p-green { background: #e2f5e9; color: #1c7a42; }
.p-blue { background: #e3effa; color: #1e5f96; }
.p-gray { background: #eef1f5; color: #5b6878; }
.tag { font-size: 11px; background: #eef1f5; border-radius: 4px; padding: 1px 6px; color: #5b6878; margin-left: 4px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.empty { padding: 30px; text-align: center; color: var(--muted); }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin-bottom: 14px; flex-wrap: wrap; }
.tab { padding: 8px 16px; cursor: pointer; border-radius: 8px 8px 0 0; font-size: 13.5px; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -2px; }
.tab:hover { color: var(--text); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* ---------- Gráficos ---------- */
.chart { width: 100%; overflow-x: auto; }
.chart svg { display: block; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 1100px) { .grid2 { grid-template-columns: 1fr; } }

/* ---------- Modal ---------- */
#modal-back { position: fixed; inset: 0; background: rgba(10,20,35,.5); display: flex; align-items: center; justify-content: center; z-index: 100; padding: 20px; }
#modal { background: #fff; border-radius: 12px; max-width: 760px; width: 100%; max-height: 88vh; overflow-y: auto; padding: 22px; }
#modal h3 { margin-bottom: 12px; font-size: 17px; }
.hidden { display: none !important; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.form-grid label, .form-col label { font-size: 12px; color: var(--muted); display: block; margin-bottom: 3px; }
.form-grid input, .form-grid select, .form-grid textarea, .form-col input, .form-col select, .form-col textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 7px; font-size: 13px;
}
.form-col { margin-bottom: 10px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; }

/* ---------- Toast ---------- */
#toast { position: fixed; bottom: 24px; right: 24px; background: #1a2332; color: #fff; padding: 12px 18px; border-radius: 9px; font-size: 13.5px; z-index: 200; max-width: 420px; box-shadow: 0 6px 20px rgba(0,0,0,.25); }
#toast.error { background: var(--red); }

/* ---------- Detalle medicamento ---------- */
.med-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 14px; flex-wrap: wrap; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; font-size: 13px; }
.kv dt { color: var(--muted); }
.kv dd { font-weight: 600; }
.calc-box { background: #f4f8fb; border: 1px dashed #b9d2e4; padding: 9px 12px; border-radius: 8px; font-size: 12.5px; color: #29506b; font-family: Consolas, monospace; }

@media print {
  #sidebar, .toolbar, .btn { display: none !important; }
  #main { margin: 0; max-width: 100%; }
}