:root {
  --bg: #f4f7f8;
  --bg-card: #ffffff;
  --bg-muted: #eef3f4;
  --ink: #1e293b;
  --ink-soft: #475569;
  --ink-mute: #64748b;
  --line: #d8e2e6;
  --teal: #0d9488;
  --teal-dk: #0f766e;
  --teal-lt: #ccfbf1;
  --teal-mid: #14b8a6;
  --slate: #334155;
  --ok: #059669;
  --ok-bg: #ecfdf5;
  --warn: #d97706;
  --warn-bg: #fffbeb;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --info: #0284c8;
  --info-bg: #f0f9ff;
  --partial: #7c3aed;
  --partial-bg: #f5f3ff;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
  --radius: 14px;
  --radius-sm: 10px;
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
  min-height: 100vh;
}

.app-header {
  background: linear-gradient(135deg, #0f766e 0%, #134e4a 55%, #1e293b 100%);
  color: #fff;
  padding: 1.1rem 1.25rem 1.25rem;
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: 0 4px 20px rgba(15, 23, 42, .25);
}
.app-header .brand {
  display: flex;
  align-items: center;
  gap: .85rem;
}
.app-header .logo {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: rgba(255,255,255,.15);
  display: grid; place-items: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.app-header h1 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -.01em;
}
.app-header p {
  margin: .15rem 0 0;
  opacity: .85;
  font-size: .8rem;
}
.header-actions {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin-top: .85rem;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1rem 5.5rem;
}

.tabs {
  display: flex;
  gap: .4rem;
  overflow-x: auto;
  padding: .15rem 0 .85rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--ink-soft);
  padding: .55rem .9rem;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: .15s ease;
}
.tab:hover { border-color: var(--teal-mid); color: var(--teal-dk); }
.tab.active {
  background: var(--teal);
  border-color: var(--teal);
  color: #fff;
  box-shadow: 0 4px 12px rgba(13,148,136,.28);
}

.panel { display: none; animation: fade .2s ease; }
.panel.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.1rem;
  margin-bottom: .9rem;
}
.card h2, .card h3 {
  margin: 0 0 .75rem;
  font-size: 1rem;
  color: var(--slate);
}
.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: .75rem;
  margin-bottom: .75rem;
}
.card-head h2, .card-head h3 { margin: 0; }

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .65rem;
  margin-bottom: .9rem;
}
.stat {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .85rem .9rem;
  box-shadow: var(--shadow);
}
.stat .label { font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-mute); font-weight: 700; }
.stat .value { font-size: 1.15rem; font-weight: 800; margin-top: .25rem; color: var(--ink); }
.stat.expected .value { color: var(--slate); }
.stat.collected .value { color: var(--ok); }
.stat.pending .value { color: var(--warn); }

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: .55rem .9rem;
  font: inherit;
  font-size: .85rem;
  font-weight: 650;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  transition: .15s ease;
  background: var(--bg-muted);
  color: var(--ink);
}
.btn:hover { filter: brightness(.97); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-dk); }
.btn-ghost {
  background: rgba(255,255,255,.12);
  color: #fff;
  border-color: rgba(255,255,255,.22);
}
.btn-ghost:hover { background: rgba(255,255,255,.2); }
.btn-outline {
  background: #fff;
  border-color: var(--line);
  color: var(--ink-soft);
}
.btn-danger { background: var(--danger-bg); color: var(--danger); border-color: #fecaca; }
.btn-sm { padding: .35rem .65rem; font-size: .78rem; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon { padding: .4rem .55rem; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
  margin-bottom: .85rem;
}
.toolbar .spacer { flex: 1; min-width: .5rem; }

.field { margin-bottom: .85rem; }
.field label {
  display: block;
  font-size: .78rem;
  font-weight: 700;
  color: var(--ink-soft);
  margin-bottom: .3rem;
}
.field .hint { font-size: .72rem; color: var(--ink-mute); font-weight: 500; margin-top: .25rem; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: .75rem; }

input[type="text"], input[type="number"], input[type="date"], input[type="month"],
select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .6rem .75rem;
  font: inherit;
  font-size: .9rem;
  background: #fff;
  color: var(--ink);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--teal-mid);
  box-shadow: 0 0 0 3px rgba(13,148,136,.18);
}
textarea { min-height: 72px; resize: vertical; }
input[type="checkbox"], input[type="radio"] { accent-color: var(--teal); width: 1rem; height: 1rem; }

.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding: .75rem .85rem;
  background: var(--bg-muted);
  border-radius: var(--radius-sm);
  margin-bottom: .75rem;
}
.switch-row strong { display: block; font-size: .9rem; }
.switch-row span { font-size: .75rem; color: var(--ink-mute); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  padding: .2rem .55rem;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 700;
  white-space: nowrap;
}
.badge-ejemplo { background: #fef3c7; color: #92400e; }
.badge-inactivo { background: var(--bg-muted); color: var(--ink-mute); }
.badge-pagado { background: var(--ok-bg); color: var(--ok); }
.badge-pendiente { background: var(--warn-bg); color: var(--warn); }
.badge-parcial { background: var(--partial-bg); color: var(--partial); }
.badge-atrasado { background: var(--danger-bg); color: var(--danger); }

.prop-list, .pay-list { display: flex; flex-direction: column; gap: .75rem; }
.prop-card, .pay-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}
.prop-card.inactive { opacity: .72; }
.prop-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: .5rem;
  margin-bottom: .5rem;
}
.prop-title { font-size: 1.05rem; font-weight: 750; margin: 0; }
.prop-meta { color: var(--ink-mute); font-size: .82rem; margin: .2rem 0; }
.prop-rent { font-size: 1.05rem; font-weight: 800; color: var(--teal-dk); }
.prop-actions { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .75rem; }
.chips { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .45rem; }
.chip {
  background: var(--teal-lt);
  color: var(--teal-dk);
  font-size: .7rem;
  font-weight: 650;
  padding: .15rem .45rem;
  border-radius: 6px;
}

.empty {
  text-align: center;
  padding: 2.2rem 1.25rem;
  background: var(--bg-card);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--ink-soft);
}
.empty .icon { font-size: 2.2rem; margin-bottom: .5rem; }
.empty h3 { margin: 0 0 .4rem; color: var(--ink); }
.empty p { margin: 0 0 1rem; font-size: .9rem; max-width: 36ch; margin-inline: auto; }

.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, .45);
  backdrop-filter: blur(3px);
  z-index: 80;
  display: none;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: #fff;
  width: 100%;
  max-width: 560px;
  max-height: 92vh;
  overflow: auto;
  border-radius: 18px 18px 0 0;
  padding: 1.15rem 1.15rem 1.4rem;
  box-shadow: 0 -8px 40px rgba(15,23,42,.2);
  animation: slideUp .22s ease;
}
@keyframes slideUp { from { transform: translateY(24px); opacity: .5; } to { transform: none; opacity: 1; } }
.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  gap: .75rem;
}
.modal-head h2 { margin: 0; font-size: 1.1rem; }
.modal-foot {
  display: flex;
  gap: .5rem;
  justify-content: flex-end;
  margin-top: 1rem;
  padding-top: .75rem;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}

.svc-grid { display: grid; gap: .5rem; }
.svc-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .5rem;
  align-items: center;
  padding: .55rem .65rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}
.svc-item label { font-size: .85rem; font-weight: 600; margin: 0; }
.svc-item select { width: auto; min-width: 140px; padding: .4rem .55rem; font-size: .8rem; }

.filter-pills { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: .75rem; }
.filter-pill {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: .35rem .7rem;
  font-size: .78rem;
  font-weight: 650;
  cursor: pointer;
  color: var(--ink-soft);
}
.filter-pill.active { background: var(--slate); color: #fff; border-color: var(--slate); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%) translateY(120%);
  background: var(--slate);
  color: #fff;
  padding: .7rem 1.1rem;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
  z-index: 100;
  box-shadow: 0 8px 24px rgba(15,23,42,.3);
  transition: transform .25s ease;
  max-width: calc(100% - 2rem);
  text-align: center;
}
.toast.show { transform: translateX(-50%) translateY(0); }

.pay-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .35rem .75rem;
  align-items: baseline;
  margin: .55rem 0;
  font-size: .86rem;
}
.pay-grid .k { color: var(--ink-mute); }
.pay-grid .v { font-weight: 650; text-align: right; }

.month-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .75rem .9rem;
  margin-bottom: .85rem;
  box-shadow: var(--shadow);
}
.month-bar input[type="month"] { max-width: 180px; }

.footer-note {
  text-align: center;
  color: var(--ink-mute);
  font-size: .75rem;
  margin-top: 1.5rem;
  padding-bottom: .5rem;
}

@media (min-width: 640px) {
  .modal-backdrop { align-items: center; padding: 1rem; }
  .modal { border-radius: 16px; max-height: 88vh; }
  .app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.15rem 1.5rem;
  }
  .header-actions { margin-top: 0; }
  .wrap { padding: 1.25rem 1.5rem 2.5rem; }
  .stats { gap: .85rem; }
  .stat .value { font-size: 1.35rem; }
}

@media (max-width: 520px) {
  .row, .row-3 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .svc-item { grid-template-columns: 1fr; }
  .svc-item select { width: 100%; }
}