:root {
  --bg: #0f1720;
  --panel: #16212e;
  --panel-2: #1d2b3a;
  --line: #294056;
  --text: #e7eef5;
  --muted: #93a4b5;
  --accent: #2f9e6f;
  --accent-2: #3aa3ff;
  --danger: #e05a5a;
  --warn: #e6c37a;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
.hidden { display: none !important; }
a { color: inherit; }

button {
  cursor: pointer; border: none; border-radius: 8px;
  padding: 9px 14px; background: var(--accent); color: white;
  font-weight: 600; font-size: 14px;
}
button:hover { filter: brightness(1.08); }
button.ghost { background: var(--panel-2); border: 1px solid var(--line); color: var(--text); }
button.link { background: none; color: var(--muted); padding: 4px; font-weight: 500; }
button.danger { background: var(--danger); }
button.small { padding: 5px 10px; font-size: 12px; }

input, select, textarea {
  width: 100%; padding: 9px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--panel-2);
  color: var(--text); font-size: 14px; font-family: inherit;
}
label { display: block; margin: 12px 0 6px; color: var(--muted); font-size: 13px; }

/* ---------- Layout ---------- */
#app { display: flex; min-height: 100vh; }
.sidebar {
  width: 250px; background: var(--panel); border-right: 1px solid var(--line);
  display: flex; flex-direction: column; padding: 18px 14px;
}
.brand-sm { font-weight: 800; letter-spacing: 2px; font-size: 18px; margin-bottom: 22px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.brand-tag { font-size: 10px; background: var(--accent); color: #fff; padding: 2px 7px; border-radius: 20px; letter-spacing: 1px; }
nav { flex: 1; }
.nav-item {
  display: flex; align-items: center; gap: 8px; padding: 11px 12px; border-radius: 8px;
  color: var(--muted); cursor: pointer; margin-bottom: 4px; text-decoration: none;
}
.nav-item:hover { background: var(--panel-2); color: var(--text); }
.nav-item.active { background: var(--accent); color: white; font-weight: 600; }
.nav-step { font-size: 11px; background: var(--panel-2); border: 1px solid var(--line); color: var(--muted); width: 22px; height: 22px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
.nav-item.active .nav-step { background: rgba(255,255,255,.2); color: #fff; border-color: transparent; }
.nav-maestro { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 16px; }
.nav-maestro .nav-step { color: var(--warn); border-color: var(--warn); }
.sidebar-foot { border-top: 1px solid var(--line); padding-top: 12px; font-size: 12px; color: var(--muted); }

.content { flex: 1; padding: 24px 32px; overflow: auto; }
.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; gap: 16px; flex-wrap: wrap; }
.page-head h1 { margin: 0; font-size: 24px; }
.head-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.head-actions input, .head-actions select { width: auto; }
.sec-hint { color: var(--muted); font-size: 13px; margin: 0 0 20px; max-width: 760px; line-height: 1.5; }

/* ---------- Cards / paneles ---------- */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; margin-bottom: 18px; }
.card h2 { margin: 0 0 4px; font-size: 16px; }
.card .card-sub { color: var(--muted); font-size: 13px; margin: 0 0 16px; }
.section-title { font-size: 12px; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); font-weight: 700; margin: 6px 0 12px; }

/* ---------- Tablas ---------- */
.table-wrap { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.table-scroll { max-height: calc(100vh - 240px); overflow: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { border-bottom: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.table th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; position: sticky; top: 0; background: var(--panel); z-index: 1; }
.table td.num, .table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table tbody tr { transition: background .08s; }
.table tbody tr:hover td { background: #263c52; }
.table tbody tr:hover td:first-child { box-shadow: inset 4px 0 0 var(--accent-2); }
.table-empty { padding: 48px 16px; text-align: center; color: var(--muted); }
.row-count { color: var(--muted); font-size: 13px; padding: 10px 14px; border-top: 1px solid var(--line); }

/* ---------- Form de conceptos (seccion 2) ---------- */
.concept-grid { display: grid; grid-template-columns: 1fr; gap: 0; }
.concept-row { display: grid; grid-template-columns: 1fr 150px 120px; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--line); }
.concept-row:last-child { border-bottom: none; }
.concept-row .c-label { font-weight: 600; }
.concept-row input { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.concept-row select { margin: 0; }
.concept-head { display: grid; grid-template-columns: 1fr 150px 220px; gap: 12px; padding: 0 0 8px; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; border-bottom: 2px solid var(--line); }
.concept-head .th-r { text-align: right; }
.concept-row { grid-template-columns: 1fr 150px 220px; }
.concept-row .c-base { color: var(--muted); font-size: 12px; }
.tag-rec { font-size: 10px; background: #1c3a52; color: #8fc9ff; padding: 1px 7px; border-radius: 20px; letter-spacing: .3px; vertical-align: middle; }
.pct-wrap { position: relative; }
.pct-wrap input { padding-right: 26px; }
.pct-sign { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }

/* Inputs dentro de celdas de tabla (FOB / CBM editables) */
.cell-input { width: 100%; padding: 6px 8px; text-align: right; font-variant-numeric: tabular-nums; background: transparent; border: 1px solid transparent; }
.cell-input.txt { text-align: left; }
.cell-input:hover { border-color: var(--line); background: var(--panel-2); }
.cell-input:focus { border-color: var(--accent-2); background: var(--panel-2); outline: none; }

/* Celdas destacadas de la tabla de resultados */
.strong-cell { font-weight: 700; color: var(--text); background: rgba(47,158,111,.08); }
.muted-cell { color: var(--muted); }
td.pos { color: #7ef0b8; }
td.neg { color: #ff9a9a; }
td.strong-cell.neg { background: rgba(224,90,90,.12); }
.grp { text-align: center !important; font-size: 12px; }
.grp-meli { color: #ffe08a; background: rgba(255,206,84,.08); }
.grp-tn { color: #8fc9ff; background: rgba(58,163,255,.08); }
.cell-select { width: 100%; padding: 6px 8px; background: var(--panel-2); border: 1px solid transparent; border-radius: 6px; color: var(--text); }
.cell-select:hover { border-color: var(--line); }

/* Concepto "suma" (Impuestos) + subconceptos */
.parent-row .c-label { font-weight: 700; }
.parent-row .imp-sum { opacity: .85; font-weight: 700; color: var(--accent-2); }
.sub-row { border-bottom: 1px dashed var(--line) !important; }
.sub-row .sub-label { color: var(--muted); padding-left: 14px; }
#result-table th { white-space: nowrap; }
#result-table td { white-space: nowrap; }

/* Bloques CBM */
.cbm-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.cbm-block { background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.cbm-block h3 { margin: 0 0 10px; font-size: 14px; }
.cbm-block label { margin: 8px 0 4px; }
.cbm-block input { margin: 0; text-align: right; }
.cbm-result { margin-top: 12px; padding-top: 10px; border-top: 1px dashed var(--line); font-size: 13px; color: var(--muted); }
.cbm-result b { color: var(--accent-2); font-size: 15px; }

.save-bar { display: flex; gap: 12px; align-items: center; margin-top: 20px; }
.save-bar .ok { color: var(--accent); font-size: 13px; }
.spacer { flex: 1; }
.pill { font-size: 12px; color: var(--muted); }

.placeholder-big { color: var(--muted); text-align: center; padding: 80px 20px; border: 2px dashed var(--line); border-radius: 12px; }

/* ---------- Modal / dropzone (importar Excel) ---------- */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: grid; place-items: center; z-index: 1000; }
.modal-box { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 24px; width: 560px; max-width: 92vw; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.modal-box h3 { margin: 0 0 16px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }
.dropzone { border: 2px dashed var(--line); border-radius: 12px; padding: 40px; text-align: center; color: var(--muted); cursor: pointer; transition: .15s; }
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: var(--panel-2); color: var(--text); }
.map-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 16px; margin: 16px 0; }
.map-grid label { margin: 0 0 4px; }
.chk { display: flex; align-items: center; gap: 8px; color: var(--text); white-space: nowrap; }
.chk input { width: auto; }
.msg { min-height: 18px; margin-top: 12px; font-size: 13px; color: var(--danger); text-align: center; }
.msg.warn { color: var(--warn); }
.pk-steps { background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 6px 16px; }
.pk-steps p { margin: 10px 0; font-size: 13px; line-height: 1.5; }
.pk-steps b { color: var(--text); }

/* ---------- Sección 3: desplegables de plataformas ---------- */
.platform-card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin-bottom: 14px; }
.platform-head { display: flex; align-items: center; gap: 12px; padding: 16px 18px; cursor: pointer; user-select: none; }
.platform-head:hover { background: var(--panel-2); }
.ph-arrow { color: var(--muted); font-size: 12px; transition: transform .15s; }
.platform-head.open .ph-arrow { transform: rotate(90deg); }
.ph-name { font-weight: 700; font-size: 16px; }
.ph-count { margin-left: auto; color: var(--muted); font-size: 12px; background: var(--panel-2); border: 1px solid var(--line); padding: 2px 10px; border-radius: 20px; }
.platform-body { border-top: 1px solid var(--line); padding: 8px 18px 18px; }

/* Campo de valor con signo (% o $) */
.val-wrap { position: relative; display: flex; align-items: center; }
.val-wrap .val-sign { position: absolute; left: 10px; color: var(--muted); pointer-events: none; font-size: 13px; }
.val-wrap input { margin: 0; text-align: right; padding-left: 24px; font-variant-numeric: tabular-nums; }
.val-wrap.monto input { border-color: var(--accent-2); }
.preview-tbl { max-height: 200px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; margin-top: 12px; }

/* ---------- Login ---------- */
.login-screen { position: fixed; inset: 0; background: var(--bg); display: grid; place-items: center; z-index: 3000; padding: 20px; }
.login-box { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 28px 26px; width: 360px; max-width: 92vw; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.login-sub { color: var(--muted); text-align: center; margin: 0 0 18px; font-size: 13px; }
.login-box label { margin-top: 12px; }
#logout-link { color: var(--accent-2); text-decoration: none; font-size: 12px; }
#logout-link:hover { text-decoration: underline; }
#foot-user { display: block; color: var(--text); font-size: 12px; margin-bottom: 2px; font-weight: 600; }

/* ---------- Toast ---------- */
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #fff; padding: 12px 22px; border-radius: 10px; font-weight: 600; box-shadow: 0 10px 30px rgba(0,0,0,.4); z-index: 2000; }
.toast.err { background: var(--danger); }