/* ============================================
   OBRAS JD — Design System
   Paleta: concreto + acero + naranja obra
   ============================================ */

:root {
  --bg:        #0f1117;
  --bg2:       #161b27;
  --bg3:       #1e2537;
  --border:    #2a3145;
  --text:      #e8eaf0;
  --text-2:    #8b92a8;
  --text-3:    #4a5268;
  --accent:    #f97316;
  --accent-2:  #fb923c;
  --green:     #22c55e;
  --red:       #ef4444;
  --blue:      #3b82f6;

  --font:      'Inter', system-ui, sans-serif;
  --mono:      'DM Mono', monospace;

  --r:         8px;
  --r2:        12px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.6;
  min-height: 100vh;
}

/* ============ AUTH ============ */
#auth-overlay {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  z-index: 100;
}

.auth-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 3rem 2.5rem;
  max-width: 400px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow);
}

.auth-logo {
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  margin-bottom: 2rem;
}

.logo-mark { font-size: 1.2rem; }
.logo-text {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -.02em;
}

.auth-box h1 {
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -.03em;
  margin-bottom: .75rem;
}

.auth-box p {
  color: var(--text-2);
  font-size: .9rem;
  margin-bottom: 2rem;
  line-height: 1.7;
}

/* ============ BUTTONS ============ */
.btn-primary {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--r);
  padding: .75rem 1.5rem;
  font-family: var(--font);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, transform .1s;
}
.btn-primary:hover { background: var(--accent-2); }
.btn-primary:active { transform: scale(.98); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: .5rem 1rem;
  font-family: var(--font);
  font-size: .85rem;
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-3); }

/* ============ LAYOUT ============ */
.hidden { display: none !important; }

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

/* ============ HEADER ============ */
header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 1.5rem;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 56px;
}

.header-left {
  display: flex; align-items: center; gap: .5rem;
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: -.02em;
  flex-shrink: 0;
}

nav {
  display: flex; gap: .25rem;
  flex: 1;
}

.nav-btn {
  background: transparent;
  border: none;
  color: var(--text-2);
  font-family: var(--font);
  font-size: .85rem;
  font-weight: 500;
  padding: .4rem .9rem;
  border-radius: 6px;
  cursor: pointer;
  transition: color .15s, background .15s;
}
.nav-btn:hover { color: var(--text); background: var(--bg3); }
.nav-btn.active { color: var(--text); background: var(--bg3); }

.header-right {
  display: flex; align-items: center; gap: .75rem;
  flex-shrink: 0;
}

#user-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

#user-name {
  font-size: .85rem;
  color: var(--text-2);
}

/* ============ MAIN ============ */
main {
  flex: 1;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.view { display: none; }
.view.active { display: block; }

.view-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.75rem;
  flex-wrap: wrap; gap: 1rem;
}

.view-header h2 {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -.03em;
}

/* ============ OBRA SELECTOR ============ */
.obra-selector {
  display: flex; align-items: center; gap: .75rem;
}
.obra-selector label {
  font-size: .8rem;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .05em;
}

select, input[type="date"], input[type="month"] {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--r);
  padding: .45rem .75rem;
  font-family: var(--font);
  font-size: .85rem;
  cursor: pointer;
  outline: none;
}
select:focus, input:focus {
  border-color: var(--accent);
}

/* ============ KPIs ============ */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1.25rem 1.5rem;
  display: flex; flex-direction: column; gap: .4rem;
}

.kpi-label {
  font-size: .75rem;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 500;
}

.kpi-value {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -.02em;
}

/* ============ CHARTS ============ */
.charts-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.chart-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1.5rem;
}

.chart-card h3 {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 1.25rem;
}

.chart-container {
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

/* Bar chart rows */
.bar-row {
  display: grid;
  grid-template-columns: 130px 1fr 80px;
  align-items: center;
  gap: .75rem;
}

.bar-label {
  font-size: .8rem;
  color: var(--text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bar-track {
  height: 6px;
  background: var(--bg3);
  border-radius: 3px;
  overflow: hidden;
}

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

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

.bar-value {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--text-2);
  text-align: right;
}

/* ============ TABLES ============ */
.table-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.table-card h3 {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 1.25rem;
}

.table-scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: .83rem;
}

thead th {
  text-align: left;
  padding: .6rem 1rem;
  color: var(--text-3);
  font-weight: 500;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-2);
  vertical-align: middle;
}

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

tbody tr:hover td { background: var(--bg3); color: var(--text); }

.td-monto {
  font-family: var(--mono);
  font-size: .82rem;
  color: var(--text);
  white-space: nowrap;
}

.td-total {
  font-family: var(--mono);
  font-size: .88rem;
  font-weight: 500;
  color: var(--accent);
  white-space: nowrap;
}

.badge {
  display: inline-block;
  padding: .2rem .6rem;
  border-radius: 4px;
  font-size: .72rem;
  font-weight: 500;
}

.badge-recibo { background: rgba(34,197,94,.15); color: var(--green); }
.badge-sin { background: rgba(249,115,22,.12); color: var(--accent); }

.table-footer {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: .8rem;
  color: var(--text-2);
}

.table-footer span:last-child {
  font-family: var(--mono);
  color: var(--text);
  font-weight: 500;
}

/* ============ FILTROS ============ */
.filtros {
  display: flex; gap: .5rem; flex-wrap: wrap; align-items: center;
}

/* ============ FORM ============ */
.form-tabs {
  display: flex; gap: .5rem;
  margin-bottom: 1.5rem;
}

.form-tab {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-2);
  border-radius: var(--r);
  padding: .5rem 1.25rem;
  font-family: var(--font);
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
}
.form-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.form-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 2rem;
  max-width: 800px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.form-group.span-2 {
  grid-column: span 2;
}

.form-group label {
  font-size: .78rem;
  font-weight: 500;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group select {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: .65rem .9rem;
  color: var(--text);
  font-family: var(--font);
  font-size: .88rem;
  outline: none;
  transition: border-color .15s;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent);
}

.form-actions {
  display: flex; gap: 1rem;
}

.form-status {
  margin-top: 1rem;
  padding: .75rem 1rem;
  border-radius: var(--r);
  font-size: .85rem;
}

.form-status.success {
  background: rgba(34,197,94,.1);
  border: 1px solid rgba(34,197,94,.3);
  color: var(--green);
}

.form-status.error {
  background: rgba(239,68,68,.1);
  border: 1px solid rgba(239,68,68,.3);
  color: var(--red);
}

/* ============ LOADING ============ */
.loading {
  text-align: center;
  color: var(--text-3);
  padding: 2rem;
  font-size: .85rem;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  main { padding: 1rem; }

  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .charts-row { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.span-2 { grid-column: span 1; }

  header { padding: 0 1rem; gap: 1rem; }
  #user-name { display: none; }

  .bar-row { grid-template-columns: 90px 1fr 70px; }
}

@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr; }
  nav .nav-btn { padding: .4rem .6rem; font-size: .8rem; }
}