/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:       #1a56db;
  --blue-light: #e8f0fe;
  --blue-dark:  #1241a8;
  --green:      #0e9f6e;
  --green-bg:   #f0fdf4;
  --red:        #e02424;
  --red-bg:     #fef2f2;
  --gray-50:    #f9fafb;
  --gray-100:   #f3f4f6;
  --gray-200:   #e5e7eb;
  --gray-300:   #d1d5db;
  --gray-500:   #6b7280;
  --gray-700:   #374151;
  --gray-900:   #111827;
  --radius:     10px;
  --shadow:     0 1px 3px rgba(0,0,0,.10), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:  0 4px 6px -1px rgba(0,0,0,.10), 0 2px 4px -1px rgba(0,0,0,.06);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #eef2f7;
  color: var(--gray-900);
  padding: 24px 16px 40px;
}

/* ── Layout ──────────────────────────────────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
}

.main-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 800px) {
  .main-grid { grid-template-columns: 1fr; }
}

/* ── Header ──────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: white;
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
}

.header-sub {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 1px;
}

.year-badge {
  background: var(--blue);
  color: white;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: .5px;
}

/* ── Panels ──────────────────────────────────────────────── */
.panel-inputs,
.panel-results {
  background: white;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.section-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--gray-200);
}

/* ── Form ────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .4px;
}

input[type="number"],
select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 14px;
  color: var(--gray-900);
  background: white;
  transition: border-color .15s, box-shadow .15s;
}

input[type="number"]:focus,
select:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26,86,219,.12);
}

.input-with-note {
  position: relative;
}

.input-note {
  font-size: 11px;
  color: var(--gray-500);
  margin-top: 4px;
  display: block;
}

/* ── Tramo selector ──────────────────────────────────────── */
.tramo-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.tramo-btn {
  padding: 8px 4px;
  border: 1.5px solid var(--gray-200);
  border-radius: 6px;
  background: white;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
  cursor: pointer;
  transition: all .15s;
  text-align: center;
}

.tramo-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-light);
}

.tramo-btn.active {
  background: var(--blue);
  border-color: var(--blue);
  color: white;
}

/* ── BRP selector ────────────────────────────────────────── */
.brp-selector {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.brp-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
  transition: all .15s;
  text-transform: none;
  letter-spacing: 0;
  margin-bottom: 0;
}

.brp-option:hover {
  border-color: var(--blue);
  background: var(--blue-light);
}

.brp-option.active {
  border-color: var(--blue);
  background: var(--blue-light);
  color: var(--blue-dark);
}

.brp-option input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--blue);
  flex-shrink: 0;
}

.brp-amount {
  margin-left: auto;
  font-size: 12px;
  color: var(--gray-500);
  font-weight: 400;
}

.brp-option.active .brp-amount {
  color: var(--blue);
}

/* ── Slider concentración ────────────────────────────────── */
.slider-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

input[type="range"] {
  flex: 1;
  accent-color: var(--blue);
  height: 4px;
}

.slider-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--blue);
  min-width: 38px;
  text-align: right;
}

.badge-threshold {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  margin-left: 8px;
  vertical-align: middle;
}

.badge-threshold.ok  { background: var(--green-bg); color: var(--green); }
.badge-threshold.no  { background: var(--red-bg);   color: var(--red);   }

.conc-note {
  font-size: 11px;
  margin-top: 5px;
  padding: 5px 10px;
  border-radius: 5px;
}

.conc-note.ok   { background: var(--green-bg); color: var(--green); }
.conc-note.high { background: #eff6ff; color: var(--blue); font-weight: 600; }
.conc-note.no   { background: var(--red-bg);   color: var(--red);   }

/* ── Umbrales concentración ──────────────────────────────── */
.conc-umbrales {
  position: relative;
  height: 16px;
  margin-top: 2px;
  margin-bottom: 4px;
}

.umbral-marker {
  position: absolute;
  transform: translateX(-50%);
  font-size: 10px;
  color: var(--gray-400);
  font-weight: 500;
}

.umbral-marker.accent {
  color: var(--blue);
  font-weight: 700;
}

/* ── Badge nivel concentración ───────────────────────────── */
.conc-nivel-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 10px;
  margin-left: 8px;
  vertical-align: middle;
  text-transform: none;
  letter-spacing: 0;
}

.conc-nivel-badge.ok   { background: var(--green-bg); color: var(--green); }
.conc-nivel-badge.high { background: #dbeafe; color: var(--blue-dark); }
.conc-nivel-badge.off  { background: var(--gray-100); color: var(--gray-500); }

/* ── Divider section ─────────────────────────────────────── */
.divider-section {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 20px 0 16px;
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .5px;
}

.divider-section::before,
.divider-section::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--gray-200);
}

/* ── Button ──────────────────────────────────────────────── */
.btn-calc {
  width: 100%;
  padding: 13px;
  background: var(--blue);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 8px;
  transition: background .15s, transform .1s;
  letter-spacing: .3px;
}

.btn-calc:hover  { background: var(--blue-dark); }
.btn-calc:active { transform: scale(.99); }

/* ── Results panel ───────────────────────────────────────── */
.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--gray-200);
}

.tramo-tag {
  background: var(--blue-light);
  color: var(--blue-dark);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
}

.total-box {
  background: linear-gradient(135deg, #1a56db 0%, #1241a8 100%);
  color: white;
  border-radius: 10px;
  padding: 20px 24px;
  margin-bottom: 24px;
}

.total-label {
  font-size: 11px;
  font-weight: 600;
  opacity: .8;
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 6px;
}

.total-amount {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -.5px;
  margin-bottom: 4px;
}

.total-sub {
  font-size: 12px;
  opacity: .7;
}

/* ── Breakdown table ─────────────────────────────────────── */
.breakdown-table {
  margin-bottom: 24px;
}

.breakdown-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 12px;
}

.breakdown-group {
  margin-bottom: 12px;
}

.breakdown-group-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: .4px;
  padding: 4px 0;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--blue-light);
}

.breakdown-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px;
  align-items: center;
  padding: 7px 0;
  border-bottom: 1px solid var(--gray-100);
}

.breakdown-row:last-child { border-bottom: none; }

.comp-name {
  font-size: 13px;
  color: var(--gray-700);
  font-weight: 500;
}

.comp-formula {
  font-size: 11px;
  color: var(--gray-500);
  font-family: 'SF Mono', Consolas, 'Courier New', monospace;
  background: var(--gray-100);
  padding: 2px 6px;
  border-radius: 4px;
  white-space: nowrap;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.comp-amount {
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-900);
  text-align: right;
  white-space: nowrap;
}

.breakdown-footer {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 2px solid var(--gray-200);
}

.total-row .comp-name { font-weight: 700; font-size: 14px; }
.total-final { font-size: 16px; color: var(--blue); }

/* ── Comparador ──────────────────────────────────────────── */
.comparador {
  border-top: 1px solid var(--gray-200);
  padding-top: 20px;
}

.comparador-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 14px;
}

.comp-bar-row {
  display: grid;
  grid-template-columns: 80px 1fr 110px;
  align-items: center;
  gap: 10px;
  padding: 5px 8px;
  border-radius: 6px;
  cursor: pointer;
  transition: background .15s;
  margin-bottom: 4px;
}

.comp-bar-row:hover { background: var(--gray-50); }
.comp-bar-row.active { background: var(--blue-light); }

.comp-bar-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-700);
}

.comp-bar-row.active .comp-bar-label { color: var(--blue-dark); }

.comp-bar-track {
  height: 8px;
  background: var(--gray-100);
  border-radius: 4px;
  overflow: hidden;
}

.comp-bar-fill {
  height: 100%;
  background: var(--gray-300);
  border-radius: 4px;
  transition: width .3s ease;
}

.comp-bar-fill.active { background: var(--blue); }

.comp-bar-amount {
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-700);
  text-align: right;
  white-space: nowrap;
}

.comp-bar-row.active .comp-bar-amount { color: var(--blue-dark); }

/* ── Horas row ───────────────────────────────────────────── */
.label-limit {
  font-weight: 400;
  color: var(--gray-500);
  text-transform: none;
  letter-spacing: 0;
  font-size: 11px;
}

.horas-row {
  display: flex !important;
  grid-template-columns: none !important;
  align-items: flex-end;
  gap: 8px;
}

.horas-field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.horas-field input {
  width: 100%;
}

.horas-sublabel {
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .3px;
}

.horas-sep {
  font-size: 18px;
  font-weight: 300;
  color: var(--gray-300);
  padding-bottom: 9px;
  flex-shrink: 0;
}

.horas-total-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: 8px 14px;
  min-width: 56px;
  transition: background .15s, border-color .15s;
}

.horas-total-box.error {
  background: var(--red-bg);
  border-color: var(--red);
}

.horas-total {
  font-size: 18px;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1;
}

.horas-total-box.error .horas-total { color: var(--red); }

.horas-error {
  margin-top: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--red);
  background: var(--red-bg);
  border-radius: 6px;
  padding: 6px 10px;
}

/* ── Readonly inputs ─────────────────────────────────────── */
input[readonly] {
  background: var(--gray-50);
  color: var(--gray-500);
  cursor: not-allowed;
  border-color: var(--gray-200);
}

input[readonly]:focus {
  box-shadow: none;
  border-color: var(--gray-200);
}

/* ── Split Table ─────────────────────────────────────────── */
.split-table {
  margin-bottom: 24px;
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  overflow: hidden;
}

.split-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 12px 16px 10px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}

.split-header-row {
  display: grid;
  grid-template-columns: 1fr 110px 130px 130px;
  gap: 4px;
  align-items: center;
  padding: 7px 16px;
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
  font-size: 10px;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .4px;
}

.split-header-row span:not(:first-child) { text-align: right; }

.split-group-title {
  font-size: 10px;
  font-weight: 700;
  color: var(--blue-dark);
  text-transform: uppercase;
  letter-spacing: .4px;
  padding: 7px 16px;
  background: var(--blue-light);
  border-top: 1px solid #c7d7f8;
  border-bottom: 1px solid #c7d7f8;
}

.split-row {
  display: grid;
  grid-template-columns: 1fr 110px 130px 130px;
  gap: 4px;
  align-items: center;
  padding: 7px 16px;
  border-bottom: 1px solid var(--gray-100);
  font-size: 13px;
}

.split-row:last-of-type { border-bottom: none; }

.split-label  { color: var(--gray-700); font-weight: 500; }

.split-liq    { font-weight: 600; color: var(--gray-900); text-align: right; white-space: nowrap; }
.split-fin    { text-align: right; white-space: nowrap; }
.split-cost   { text-align: right; white-space: nowrap; }

.split-zero      { color: var(--gray-300); font-weight: 400; }
.split-fin-val   { color: #059669; font-weight: 600; }
.split-costo-val { color: #d97706; font-weight: 600; }

.split-subtotal {
  display: grid;
  grid-template-columns: 1fr 110px 130px 130px;
  gap: 4px;
  align-items: center;
  padding: 8px 16px;
  background: var(--gray-50);
  border-top: 2px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
  font-size: 13px;
  font-weight: 700;
}

.split-subtotal .split-label { color: var(--gray-900); }
.split-subtotal .split-fin-val   { color: #059669; }
.split-subtotal .split-costo-val { color: #d97706; }

.split-total-row {
  display: grid;
  grid-template-columns: 1fr 110px 130px 130px;
  gap: 4px;
  align-items: center;
  padding: 11px 16px;
  background: #111827;
  border-top: 2px solid var(--gray-700);
  font-size: 14px;
  font-weight: 800;
}

.split-total-row .split-label { color: #f9fafb; }
.split-total-row .split-liq   { color: #f9fafb; text-align: right; }
.split-total-row .split-fin   { color: #6ee7b7; text-align: right; }
.split-total-row .split-cost  { color: #fcd34d; text-align: right; }

.split-pct-row {
  display: grid;
  grid-template-columns: 1fr 110px 130px 130px;
  gap: 4px;
  align-items: center;
  padding: 6px 16px;
  background: #1f2937;
  font-size: 12px;
  font-weight: 700;
}

.split-pct-row span             { text-align: right; color: #9ca3af; }
.split-pct-row span:first-child { text-align: left; }
.split-pct-row span:nth-child(2){ color: #e5e7eb; }
.split-pct-row span:nth-child(3){ color: #6ee7b7; }
.split-pct-row span:nth-child(4){ color: #fcd34d; }

/* ── Footer ──────────────────────────────────────────────── */
.footer {
  text-align: center;
  font-size: 11px;
  color: var(--gray-500);
  margin-top: 24px;
  padding: 0 16px;
}