/* ═══════════════════════════════════════════════════════════
   Experimentos Growth — Design system
   ═══════════════════════════════════════════════════════════ */
:root {
  --font: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;

  --bg: #f4f4f5;
  --bg-elevated: #ffffff;
  --bg-muted: #fafafa;
  --bg-subtle: #f4f4f5;

  --text: #18181b;
  --text-secondary: #52525b;
  --text-muted: #a1a1aa;

  --border: #e4e4e7;
  --border-subtle: #f4f4f5;

  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --accent-soft: #f5f3ff;
  --accent-ring: rgba(124, 58, 237, 0.2);

  --forward: #0284c7;
  --forward-soft: #e0f2fe;
  --forward-ring: rgba(2, 132, 199, 0.2);

  --reverse: #db2777;
  --reverse-soft: #fce7f3;
  --reverse-ring: rgba(219, 39, 119, 0.2);

  --danger: #e11d48;
  --danger-soft: #fff1f2;
  --success: #059669;
  --success-soft: #ecfdf5;
  --warning: #d97706;
  --warning-soft: #fffbeb;

  --ice-bg: #faf5ff;
  --ice-text: #6d28d9;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.1);

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t: 0.2s var(--ease);

  --header-h: auto;
  --content-max: 1440px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body,
.app-body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ─── Header ─── */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 1rem 1.5rem 0;
  width: 100%;
}

.header-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--accent) 0%, #a78bfa 100%);
  border-radius: var(--radius-sm);
  font-size: 1.15rem;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 4px 12px var(--accent-ring);
  flex-shrink: 0;
}

.app-header h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  line-height: 1.2;
}

.subtitle {
  margin: 0.15rem 0 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.header-links {
  margin: 0;
}

.header-cta,
.header-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  transition: background var(--t), border-color var(--t), color var(--t), box-shadow var(--t);
}

.header-cta:hover,
.header-links a:hover {
  color: var(--accent);
  border-color: #ddd6fe;
  background: var(--accent-soft);
  box-shadow: var(--shadow-sm);
}

/* Main nav — segmented control */
.main-tabs {
  display: flex;
  padding: 0 1.5rem 1rem;
  max-width: var(--content-max);
  margin: 0 auto;
  width: 100%;
  background: transparent;
  border: none;
}

.main-tabs .segmented {
  display: flex;
  width: 100%;
  max-width: 480px;
  padding: 4px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  gap: 4px;
}

.main-tabs .tab {
  flex: 1;
  padding: 0.6rem 1rem;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--t), background var(--t), box-shadow var(--t);
  white-space: nowrap;
}

.main-tabs .tab:hover {
  color: var(--text-secondary);
}

.main-tabs .tab.active {
  background: var(--bg-elevated);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.page-nav {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  width: 100%;
}

.nav-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.nav-link:hover {
  color: var(--accent-hover);
}

/* ─── Main ─── */
main {
  flex: 1;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 1.5rem;
}

.panel {
  display: none;
}

.panel.active {
  display: block;
  animation: panelIn 0.35s var(--ease);
}

@keyframes panelIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section-head {
  margin-bottom: 1.25rem;
}

.section-head h2 {
  margin: 0 0 0.25rem;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ─── Toolbar ─── */
.panel-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.toolbar-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toolbar-group-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.toolbar-left,
.toolbar-right {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.5rem 0.9rem;
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--t), border-color var(--t), color var(--t), box-shadow var(--t), transform 0.1s;
  white-space: nowrap;
}

.btn:hover:not(:disabled) {
  background: var(--bg-muted);
  border-color: #d4d4d8;
  color: var(--text);
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-ring);
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-ring);
}

.btn-danger {
  color: var(--danger);
  background: var(--danger-soft);
  border-color: #fecdd3;
}

.btn-danger:hover:not(:disabled) {
  background: #ffe4e6;
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-subtle);
  border-color: var(--border);
}

.btn-file {
  cursor: pointer;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
}

/* ─── Search & ICE ─── */
.search-input {
  width: 100%;
  min-width: 200px;
  max-width: 280px;
  padding: 0.5rem 1rem 0.5rem 2.35rem;
  font-family: inherit;
  font-size: 0.8125rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-muted)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23a1a1aa' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85zm-5.242 1.156a5 5 0 1 1 0-10 5 5 0 0 1 0 10z'/%3E%3C/svg%3E")
    no-repeat 0.8rem center;
  transition: border-color var(--t), box-shadow var(--t);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
  background-color: var(--bg-elevated);
}

.ice-formula {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin: 0 0 1rem;
  padding: 0.85rem 1rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--ice-bg);
  border: 1px solid #ede9fe;
  border-radius: var(--radius);
  line-height: 1.5;
}

.ice-formula::before {
  content: "ICE";
  flex-shrink: 0;
  padding: 0.2rem 0.5rem;
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--ice-text);
  background: #fff;
  border-radius: 6px;
  border: 1px solid #ddd6fe;
}

.ice-formula strong {
  font-weight: 600;
  color: var(--ice-text);
}

/* ─── Plantilla: tabla + drawer lateral pantalla completa ─── */
.plantilla-layout {
  position: relative;
}

.plantilla-main {
  min-width: 0;
}

.sidebar-backdrop {
  display: none;
}

.experiment-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 210;
  width: min(440px, 100vw);
  height: 100vh;
  height: 100dvh;
  max-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg-elevated);
  border-left: 1px solid var(--border);
  box-shadow: -12px 0 48px rgba(0, 0, 0, 0.14);
  transform: translateX(100%);
  transition: transform 0.34s var(--ease);
  border-radius: 0;
  overflow: hidden;
}

body.sidebar-drawer-open .experiment-sidebar {
  transform: translateX(0);
}

.sidebar-head {
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1.15rem 1.25rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
}

.sidebar-head-text {
  min-width: 0;
  flex: 1;
}

.sidebar-close {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--text-muted);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--t), background var(--t), border-color var(--t);
}

.sidebar-close:hover {
  color: var(--text);
  background: var(--danger-soft);
  border-color: #fecdd3;
}

.sidebar-fields {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1rem 1.25rem 1.5rem;
  -webkit-overflow-scrolling: touch;
}

.sidebar-head h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

.sidebar-subtitle {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.sidebar-empty {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.sidebar-ice-note {
  margin: 0 0 1rem;
  padding: 0.65rem 0.75rem;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--ice-text);
  background: var(--ice-bg);
  border-radius: var(--radius-sm);
  border: 1px solid #e9d5ff;
}

.sidebar-field {
  margin-bottom: 0.85rem;
}

.sidebar-field label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

.sidebar-control input,
.sidebar-control textarea,
.sidebar-control select {
  width: 100%;
  font-family: inherit;
  font-size: 0.875rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  transition: border-color var(--t), box-shadow var(--t);
}

.sidebar-control textarea {
  min-height: 4rem;
  resize: vertical;
  line-height: 1.45;
}

.sidebar-control select.cell-select {
  cursor: pointer;
}

.sidebar-control select.cell-select-ice {
  max-width: none;
}

.sidebar-control input:focus,
.sidebar-control textarea:focus,
.sidebar-control select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-ring);
}

.sidebar-control input.input-error {
  border-color: var(--danger);
  background: var(--danger-soft);
}

.sidebar-control .cell-owners-btn {
  width: 100%;
  padding: 0.5rem 0.65rem;
  font-family: inherit;
  font-size: 0.8125rem;
  text-align: left;
  color: var(--text-secondary);
  background: #fff;
  border: 1px dashed #d4d4d8;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.sidebar-control .cell-owners-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.data-table td.col-hypothesis {
  min-width: 200px;
  max-width: 280px;
}

.data-table td.col-hypothesis textarea {
  min-height: 2.5rem;
}

.data-table th.col-drag,
.data-table td.col-drag {
  width: 2.25rem;
  min-width: 2.25rem;
  max-width: 2.25rem;
  padding: 0.35rem 0.25rem;
  vertical-align: middle;
  text-align: center;
}

.row-drag-handle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.75rem;
  font-size: 0.85rem;
  letter-spacing: -0.12em;
  color: var(--text-muted);
  cursor: grab;
  border-radius: 4px;
  user-select: none;
  transition: color var(--t), background var(--t);
}

.row-drag-handle:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.row-drag-handle:active {
  cursor: grabbing;
}

.data-table tbody tr.dragging {
  opacity: 0.45;
}

.data-table tbody tr.drag-over {
  box-shadow: inset 0 3px 0 var(--accent);
}

.data-table input.id-readonly {
  font-weight: 700;
  color: var(--text-secondary);
  text-align: center;
  cursor: default;
  background: var(--bg-muted);
}

@media (max-width: 640px) {
  .experiment-sidebar {
    width: 100vw;
  }
}

/* ─── Table ─── */
.table-wrap {
  overflow: visible;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.data-table {
  width: max-content;
  min-width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.data-table th,
.data-table td {
  padding: 0.5rem 0.65rem;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: top;
  min-width: 88px;
}

.data-table th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--bg-muted);
  color: var(--text-secondary);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}

.data-table th.col-ice,
.data-table th.col-ice-sub {
  background: #f5f3ff;
  color: var(--ice-text);
}

.data-table td.col-ice {
  background: #faf5ff;
  font-weight: 800;
  font-size: 0.9375rem;
  text-align: center;
  color: var(--ice-text);
}

.data-table td.col-ice-sub {
  background: #fefefe;
}

.data-table tbody tr {
  cursor: pointer;
  transition: background var(--t);
}

.data-table tbody tr:hover {
  background: var(--accent-soft);
}

.data-table tbody tr.selected {
  background: #ede9fe;
  box-shadow: inset 3px 0 0 var(--accent);
}

.data-table tbody tr.row-error {
  background: var(--danger-soft);
}

.data-table tbody tr.hidden-by-filter {
  display: none;
}

.data-table input,
.data-table textarea,
.data-table select {
  font-family: inherit;
  font-size: inherit;
}

.data-table input,
.data-table textarea {
  width: 100%;
  border: 1px solid transparent;
  background: transparent;
  padding: 0.4rem 0.45rem;
  border-radius: 6px;
  transition: border-color var(--t), background var(--t), box-shadow var(--t);
}

.data-table input:focus,
.data-table textarea:focus,
.data-table select:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 2px var(--accent-ring);
}

.data-table input.input-error {
  border-color: var(--danger);
  background: var(--danger-soft);
}

.data-table input.ice-readonly {
  font-weight: 800;
  text-align: center;
  color: var(--ice-text);
  cursor: default;
}

.data-table select.cell-select {
  width: 100%;
  min-width: 100px;
  max-width: 220px;
  padding: 0.4rem 0.45rem;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
}

.data-table select.cell-select-ice {
  min-width: 150px;
  max-width: 260px;
}

.data-table textarea {
  min-height: 2.75rem;
  resize: vertical;
  line-height: 1.45;
}

.data-table .cell-owners-btn {
  width: 100%;
  min-width: 130px;
  padding: 0.45rem 0.6rem;
  font-family: inherit;
  font-size: 0.75rem;
  text-align: left;
  line-height: 1.4;
  color: var(--text-secondary);
  background: #fff;
  border: 1px dashed #d4d4d8;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--t);
}

.data-table .cell-owners-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  border-style: solid;
  background: var(--accent-soft);
}

.table-pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.85rem;
  padding: 0.65rem 0.85rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.pagination-size {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.pagination-size label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.pagination-select {
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.45rem 2rem 0.45rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2352525b' d='M3 4.5 6 7.5 9 4.5'/%3E%3C/svg%3E") no-repeat right 0.6rem center;
  color: var(--text);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  min-width: 4.5rem;
}

.pagination-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-ring);
}

.pagination-nav {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.page-info {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  min-width: 10rem;
  text-align: center;
}

.save-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.85rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
}

.save-status::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 2px var(--success-soft);
}

/* ═══ Calculadora ═══ */
body.calc-page-active main {
  max-width: 920px;
}

.panel-calculadora.active {
  display: block;
}

.calculator-shell {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.calc-mode-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0;
  margin: 0;
  background: var(--bg-muted);
  border-bottom: 1px solid var(--border);
}

.calc-mode-tab {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border: none;
  border-bottom: 3px solid transparent;
  background: transparent;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  color: var(--text-muted);
  transition: background var(--t), border-color var(--t), color var(--t);
}

.calc-mode-tab:hover {
  background: rgba(255, 255, 255, 0.6);
  color: var(--text-secondary);
}

.calc-mode-tab.active {
  background: var(--bg-elevated);
  color: var(--text);
}

.calc-mode-tab[data-calc-mode="forward"].active {
  border-bottom-color: var(--forward);
  color: var(--forward);
}

.calc-mode-tab[data-calc-mode="forward"].active .calc-mode-icon {
  background: var(--forward-soft);
  color: var(--forward);
}

.calc-mode-tab[data-calc-mode="reverse"].active {
  border-bottom-color: var(--reverse);
  color: var(--reverse);
}

.calc-mode-tab[data-calc-mode="reverse"].active .calc-mode-icon {
  background: var(--reverse-soft);
  color: var(--reverse);
}

.calc-mode-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  font-weight: 700;
  background: var(--bg-subtle);
  flex-shrink: 0;
  transition: background var(--t), color var(--t);
}

.calc-mode-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}

.calc-mode-title {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.calc-mode-sub {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

.calc-mode-tab.active .calc-mode-sub {
  color: inherit;
  opacity: 0.75;
}

.calculator-body {
  padding: 1.5rem;
}

.calc-subpanel {
  display: none;
}

.calc-subpanel.active {
  display: block;
  animation: panelIn 0.3s var(--ease);
}

.calc-subpanel[hidden] {
  display: none !important;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 0;
}

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

.calc-card {
  padding: 1.35rem;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--t);
}

.calc-card:focus-within {
  box-shadow: var(--shadow);
}

.calc-card-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.2rem !important;
  padding: 0 !important;
  border: none !important;
  font-size: 1rem !important;
  font-weight: 700 !important;
  letter-spacing: -0.02em;
}

.calc-card-icon {
  font-size: 0.875rem;
  line-height: 1;
}

.calc-card-desc {
  margin: 0 0 1.25rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.results-card {
  background: linear-gradient(165deg, #fff 0%, var(--accent-soft) 100%);
  border-color: #ede9fe;
}

body.calc-page-active .panel-calculadora .results-card {
  background: linear-gradient(165deg, #fff 0%, var(--reverse-soft) 100%);
  border-color: #fbcfe8;
}

#calc-sub-forward.active ~ * .results-card,
#calc-sub-forward.active .results-card {
  background: linear-gradient(165deg, #fff 0%, var(--forward-soft) 100%);
  border-color: #bae6fd;
}

.panel-calculadora #calc-sub-forward.active .results-card {
  background: linear-gradient(165deg, #fff 0%, var(--forward-soft) 100%);
  border-color: #bae6fd;
}

.panel-calculadora #calc-sub-reverse.active .results-card {
  background: linear-gradient(165deg, #fff 0%, var(--reverse-soft) 100%);
  border-color: #fbcfe8;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input {
  width: 100%;
  padding: 0.7rem 0.9rem;
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--t), box-shadow var(--t);
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

.panel-calculadora #calc-sub-forward .form-group input:focus {
  border-color: var(--forward);
  box-shadow: 0 0 0 3px var(--forward-ring);
}

.panel-calculadora #calc-sub-reverse .form-group input:focus {
  border-color: var(--reverse);
  box-shadow: 0 0 0 3px var(--reverse-ring);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.hint {
  font-weight: 500;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Results */
.results-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.results-list .placeholder {
  margin: 0;
  padding: 1.5rem 0.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.result-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.result-metric {
  padding: 1rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
}

.result-metric.full {
  grid-column: 1 / -1;
}

.result-metric-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.result-metric-value {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  line-height: 1.1;
}

.result-metric-sub {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.result-item {
  padding: 0.85rem 1rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
}

.result-item strong {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.result-item .value {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.result-item.highlight {
  border-left-color: var(--success);
  background: var(--success-soft);
}

.result-item.warning {
  border-left-color: var(--warning);
  background: var(--warning-soft);
}

.result-item.danger {
  border-left-color: var(--danger);
  background: var(--danger-soft);
}

.result-alert {
  padding: 0.85rem 1rem;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: #92400e;
  background: var(--warning-soft);
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
}

/* Scenarios */
.scenarios-section {
  margin-top: 1.25rem;
  padding: 1.25rem;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.scenarios-section h2 {
  margin: 0 0 0.25rem;
  font-size: 0.9375rem;
  font-weight: 700;
}

.scenarios-hint {
  margin: 0 0 1rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.scenarios-wrap {
  border: none;
  box-shadow: none;
  max-height: none;
  background: #fff;
  border-radius: var(--radius);
}

.scenarios-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.scenarios-table th,
.scenarios-table td {
  padding: 0.65rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.scenarios-table th {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg-muted);
}

.scenarios-table tbody tr:last-child td {
  border-bottom: none;
}

.scenarios-table tbody tr:hover td {
  background: var(--reverse-soft);
}

.feasibility-factible {
  color: var(--success);
  font-weight: 700;
}

.feasibility-ajustado {
  color: var(--warning);
  font-weight: 700;
}

.feasibility-poco {
  color: var(--danger);
  font-weight: 700;
}

.feasibility-na {
  color: var(--text-muted);
}

/* ─── Footer ─── */
.app-footer {
  margin-top: auto;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

.app-footer p {
  max-width: var(--content-max);
  margin: 0 auto;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
}

/* ─── Modal ─── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 230;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.modal[hidden] {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(24, 24, 27, 0.5);
  backdrop-filter: blur(6px);
}

.modal-dialog {
  position: relative;
  width: 100%;
  max-width: 420px;
  max-height: 88vh;
  overflow-y: auto;
  padding: 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.3s var(--ease);
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-dialog h2 {
  margin: 0 0 0.35rem;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.modal-hint {
  margin: 0 0 1rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.modal-hint a {
  color: var(--accent);
  font-weight: 600;
}

.owner-modal-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  max-height: 280px;
  margin-bottom: 1rem;
  overflow-y: auto;
}

.owner-modal-option {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.75rem;
  font-size: 0.875rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--t), border-color var(--t);
}

.owner-modal-option:hover {
  background: var(--bg-muted);
  border-color: var(--border);
}

.owner-modal-option input {
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--accent);
}

.modal-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

/* ─── Propietarios page ─── */
.owners-page {
  max-width: 480px;
  padding: 0;
}

.owners-card {
  padding: 1.35rem;
  margin-bottom: 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.owners-card h2 {
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
}

.owners-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.owners-list-item:last-child {
  border-bottom: none;
}

.owners-list-name {
  font-weight: 600;
}

.owners-empty {
  margin: 0;
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
  background: var(--bg-muted);
  border-radius: var(--radius);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .header-inner {
    padding: 0.85rem 1rem 0;
  }

  .main-tabs {
    padding: 0 1rem 0.85rem;
  }

  .main-tabs .segmented {
    max-width: none;
  }

  main {
    padding: 1rem;
  }

  .header-top {
    margin-bottom: 0.75rem;
  }

  .panel-toolbar {
    flex-direction: column;
  }

  .toolbar-right .search-input {
    max-width: none;
  }

  .calc-mode-nav {
    grid-template-columns: 1fr;
  }

  .calc-mode-tab {
    padding: 0.85rem 1rem;
  }

  .calculator-body {
    padding: 1rem;
  }

  .result-metrics {
    grid-template-columns: 1fr;
  }
}

/* ─── Login ─── */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

.login-brand {
  margin-bottom: 1.5rem;
}

.login-sub {
  color: var(--text-muted);
  margin: 0 0 1rem;
}

.login-form .form-group {
  margin-bottom: 1rem;
}

.btn-block {
  width: 100%;
  margin-top: 0.5rem;
}

.login-error {
  color: var(--danger);
  font-size: 0.9rem;
  margin: 0 0 0.75rem;
}

.login-success {
  color: var(--success);
  margin: 0 0 1rem;
}

.login-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1.25rem;
}

.login-hint code {
  font-size: 0.8rem;
}

.header-auth {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.header-user {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

/* ─── Admin ─── */
.admin-main {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 1.5rem;
  width: 100%;
}

.admin-panel {
  display: none;
}

.admin-panel.active {
  display: block;
}

.admin-user-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 640px) {
  .admin-user-form .form-row {
    grid-template-columns: 1fr;
  }
}

.role-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
  margin-left: 0.35rem;
  vertical-align: middle;
}

.role-badge.inactive {
  background: var(--danger-soft);
  color: var(--danger);
}

.admin-users-list .owners-list-name small {
  color: var(--text-muted);
  font-weight: 400;
}