:root {
  color-scheme: light;
  --surface-1: #fcfcfb;
  --page-plane: #f2f3f5;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --grid: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11,11,11,0.10);
  --blue: #2a78d6;
  --orange: #eb6834;
  --aqua: #1baf7a;
  --yellow: #eda100;
  --magenta: #e87ba4;
  --red: #d03b3b;
  --green: #0ca30c;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--page-plane);
  color: var(--text-primary);
}

/* --- Login --- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.login-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 28px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
}
.login-card h1 {
  font-size: 18px;
  margin: 0 0 4px;
}
.login-card p.subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0 0 20px;
}
.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: 12.5px;
  color: var(--text-secondary);
  margin-bottom: 5px;
}
.field input, .field select {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
}
.btn {
  width: 100%;
  padding: 10px 14px;
  border: none;
  border-radius: 8px;
  background: var(--blue);
  color: white;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { opacity: 0.92; }
.btn.secondary {
  background: transparent;
  color: var(--blue);
  border: 1px solid var(--border);
}
.toggle-link {
  text-align: center;
  font-size: 13px;
  margin-top: 14px;
  color: var(--text-secondary);
}
.toggle-link a { color: var(--blue); cursor: pointer; text-decoration: none; }
.error-msg {
  background: #fdeceb;
  color: var(--red);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 12.5px;
  margin-bottom: 14px;
}
.success-msg {
  background: #e8f7ea;
  color: var(--green);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 12.5px;
  margin-bottom: 14px;
}

/* --- App shell --- */
.app-header {
  background: var(--surface-1);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}
.app-header h1 { font-size: 15px; margin: 0; font-weight: 700; }
.app-header .who { font-size: 12.5px; color: var(--text-secondary); }
.app-header .who b { color: var(--text-primary); }
.logout-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 12.5px;
  cursor: pointer;
  color: var(--text-secondary);
}

.tabs {
  display: flex;
  gap: 4px;
  padding: 10px 20px 0;
  background: var(--surface-1);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.tab-btn {
  padding: 9px 14px;
  border: none;
  background: transparent;
  border-radius: 8px 8px 0 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
}
.tab-btn.active {
  color: var(--blue);
  background: var(--page-plane);
  border-bottom: 2px solid var(--blue);
}

main.content {
  padding: 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.view { display: none; }
.view.active { display: block; }

.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}
.card h2 {
  font-size: 14px;
  margin: 0 0 12px;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}
table.data-table th {
  text-align: left;
  padding: 8px 10px;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--baseline);
  white-space: nowrap;
}
table.data-table td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--grid);
  vertical-align: middle;
}
table.data-table input[type=number] {
  width: 90px;
  padding: 5px 7px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12.5px;
}
.frente-group-row td {
  background: color-mix(in srgb, var(--text-primary) 4%, transparent);
  font-weight: 700;
  font-size: 12.5px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}
.badge.ok { background: #e8f7ea; color: var(--green); }
.badge.warn { background: #fff4e0; color: #a06800; }
.badge.late { background: #fdeceb; color: var(--red); }

.save-hint {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 6px;
}

form.avance-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
form.avance-form .full { grid-column: 1 / -1; }
@media (max-width: 640px) {
  form.avance-form { grid-template-columns: 1fr; }
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.stat-tile {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
}
.stat-tile .label { font-size: 11.5px; color: var(--text-muted); margin-bottom: 4px; }
.stat-tile .value { font-size: 22px; font-weight: 700; }
.stat-tile .value.good { color: var(--green); }
.stat-tile .value.bad { color: var(--red); }

.chart-wrap {
  position: relative;
  height: 340px;
}

.small-btn {
  padding: 6px 12px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--surface-1);
  font-size: 12px;
  cursor: pointer;
}
.small-btn.primary {
  background: var(--blue);
  color: white;
  border-color: var(--blue);
}

/* --- Gantt de avance --- */
.gantt-chart {
  min-width: 720px;
  display: grid;
  grid-template-columns: 260px 1fr;
  font-size: 12.5px;
}
.gantt-labels-col { border-right: 1px solid var(--border); }
.gantt-chart-col { position: relative; }
.gantt-row {
  height: 32px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--grid);
}
.gantt-row.frente-row {
  height: 36px;
  background: color-mix(in srgb, var(--text-primary) 4%, transparent);
  font-weight: 700;
  cursor: pointer;
}
.gantt-row.partida-row .gantt-label { padding-left: 20px; color: var(--text-secondary); font-weight: 400; }
.gantt-label {
  padding: 0 10px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.gantt-header-row { height: 26px; border-bottom: 1px solid var(--baseline); }
.gantt-track-row {
  position: relative;
  height: 32px;
  border-bottom: 1px solid var(--grid);
}
.gantt-track-row.frente-row { height: 36px; background: color-mix(in srgb, var(--text-primary) 4%, transparent); }
.gantt-track-row.header-row { height: 26px; border-bottom: 1px solid var(--baseline); }
.gantt-gridlines { position: absolute; inset: 0; pointer-events: none; }
.gantt-gridline { position: absolute; top: 0; bottom: 0; width: 1px; background: var(--grid); }
.gantt-month-label { position: absolute; top: 5px; font-size: 10px; color: var(--text-muted); white-space: nowrap; }
.gantt-bar-bg {
  position: absolute;
  top: 7px;
  height: 18px;
  border-radius: 5px;
  background: var(--grid);
}
.gantt-bar-fill {
  position: absolute;
  top: 7px;
  height: 18px;
  border-radius: 5px 0 0 5px;
}
.gantt-bar-fill.completo { border-radius: 5px; }
.gantt-today-line {
  position: absolute;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--red);
  z-index: 5;
}
.gantt-pct-label {
  position: absolute;
  top: 8px;
  font-size: 10.5px;
  font-weight: 700;
  color: var(--text-primary);
}

.legend-row {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 8px;
  flex-wrap: wrap;
}
.legend-dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 3px;
  margin-right: 5px;
  vertical-align: middle;
}

/* =========================================================
   Adaptación a la pantalla: celular, tablet, monitor normal,
   monitor grande y ultrawide. Solo CSS; no cambia la lógica.
   ========================================================= */

/* El contenido usa el ancho disponible en vez de quedarse en 1200px */
main.content { max-width: 100%; }
.chart-wrap { height: clamp(260px, 38vh, 520px); }

/* --- Monitor normal (laptop / 1080p) --- */
@media (min-width: 1280px) {
  main.content { max-width: 1400px; padding: 24px 28px; }
}

/* --- Monitor grande (1440p / 4K) --- */
@media (min-width: 1700px) {
  main.content { max-width: min(96vw, 1900px); }
  .stat-row { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
}

/* --- Ultrawide (21:9 / 32:9): las tarjetas se acomodan en dos columnas.
       Las que tienen tablas, formularios, Gantt o indicadores ocupan todo el ancho. --- */
@media (min-width: 2000px) {
  main.content { max-width: min(97vw, 3200px); padding: 26px 36px; }
  .view.active {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 20px;
    align-items: start;
  }
  .view.active > .card,
  .view.active > .stat-row { margin-bottom: 20px; }
  .view.active > .stat-row,
  .view.active > .card:has(table),
  .view.active > .card:has(form),
  .view.active > .card:has(.gantt-chart),
  .view.active > .card:has(select),
  .view.active > .card:has(.stat-row),
  .view.active > .card:has(textarea),
  .view.active > .card:has(input[type=text]) { grid-column: 1 / -1; }
  .chart-wrap { height: clamp(300px, 36vh, 620px); }
  .card { padding: 20px; }
  .card h2 { font-size: 15px; }
}

/* --- Tablet --- */
@media (max-width: 1024px) {
  main.content { padding: 16px; }
  .card { overflow-x: auto; }
  .stat-row { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
}

/* --- Celular --- */
@media (max-width: 640px) {
  .app-header { padding: 10px 12px; flex-wrap: wrap; gap: 6px; }
  .app-header h1 { font-size: 14px; }
  .tabs { padding: 8px 8px 0; gap: 2px; -webkit-overflow-scrolling: touch; }
  .tab-btn { padding: 10px 12px; font-size: 13px; }
  main.content { padding: 10px; }
  .card { padding: 12px; border-radius: 10px; margin-bottom: 12px; }
  .stat-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .stat-tile { padding: 10px 12px; }
  .stat-tile .value { font-size: 18px; }
  .chart-wrap { height: 260px; }
  table.data-table { font-size: 12px; }
  table.data-table th, table.data-table td { padding: 6px 7px; }
  .gantt-chart { grid-template-columns: 170px 1fr; min-width: 640px; }
}

/* --- Pantallas táctiles: botones y campos cómodos para el dedo --- */
@media (pointer: coarse) {
  .btn, .small-btn, .logout-btn, .tab-btn { min-height: 40px; }
  input, select, textarea { font-size: 16px; }
}