/* =====================================================================
   Cobrador App — tema "Obsidian & Oro"
   Negro cálido, acentos dorados, tipografía serif para títulos y
   monoespaciada para cifras (efecto libro contable / tarjeta premium).
   Sigue usando exactamente los mismos nombres de clase que genera
   public/js/app.js — este archivo es un rediseño visual puro, no
   requiere ningún cambio en la lógica.
   ===================================================================== */

:root {
  /* Superficies */
  --black: #050403;
  --bg: #0a0908;
  --surface: #14120d;
  --surface-2: #1b1811;
  --surface-hover: #211d15;
  --border: rgba(205, 164, 94, 0.16);
  --border-strong: rgba(205, 164, 94, 0.32);

  /* Texto */
  --text: #f4ecdb;
  --text-dim: #b7ab95;
  --muted: #8d8170;

  /* Oro */
  --gold: #cda45e;
  --gold-bright: #f0d78c;
  --gold-dim: #7d6636;
  --gold-ink: #241c0f; /* texto oscuro sobre fondo dorado sólido */

  /* Estados */
  --success: #6fbf8b;
  --success-bg: rgba(111, 191, 139, 0.13);
  --danger: #e2685a;
  --danger-bg: rgba(226, 104, 90, 0.14);
  --info: #83a9c4;
  --info-bg: rgba(131, 169, 196, 0.13);

  /* Geometría */
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.6);

  /* Tipografía: serif para jerarquía/marca, sans para UI, mono para cifras */
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, ui-serif, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;

  /* Compat: algunas reglas heredadas usan --primary como acento genérico */
  --primary: var(--gold);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-tap-highlight-color: transparent;
}

body {
  /* Viñeta cálida + grano muy sutil, todo generado en CSS (sin imágenes
     externas) para que la PWA siga funcionando offline sin depender de
     ningún recurso de red. */
  background-color: var(--bg);
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E"),
    radial-gradient(ellipse 90% 60% at 50% -10%, rgba(205, 164, 94, 0.10), transparent 60%),
    radial-gradient(ellipse 80% 50% at 100% 100%, rgba(205, 164, 94, 0.06), transparent 60%);
  background-attachment: fixed;
}

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

button { font-family: inherit; cursor: pointer; }

input, select, textarea {
  font-family: inherit;
  font-size: 16px;
  color-scheme: dark;
}

a { color: inherit; }

::selection { background: var(--gold); color: var(--gold-ink); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

@keyframes riseIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ---------- Pantalla de login ---------- */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(205, 164, 94, 0.16), transparent 60%),
    var(--black);
}

.login-card {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 44px 30px 34px;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  animation: riseIn 0.5s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.login-logo {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--surface-2), var(--black) 75%);
  border: 1px solid var(--border-strong);
  color: var(--gold-bright);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 34px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 0 0 5px rgba(205, 164, 94, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.login-card h1 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.2px;
  font-size: 24px;
  margin: 0 0 6px;
}

.login-card p.subtitle {
  color: var(--text-dim);
  font-size: 13.5px;
  margin: 0 0 28px;
}

.field { text-align: left; margin-bottom: 16px; }

.field label {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 7px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--black);
  color: var(--text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23cda45e'%3E%3Cpath d='M5.5 7.5l4.5 4.5 4.5-4.5' stroke='%23cda45e' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 34px;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(205, 164, 94, 0.16);
}

.field input::placeholder,
.field textarea::placeholder { color: var(--muted); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.01em;
  transition: transform 0.08s ease, filter 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  color: var(--gold-ink);
  width: 100%;
  box-shadow: 0 6px 18px rgba(205, 164, 94, 0.22);
}
.btn-primary:hover { filter: brightness(1.06); }

.btn-secondary {
  background: transparent;
  color: var(--gold);
  border-color: var(--border-strong);
}
.btn-secondary:hover { background: rgba(205, 164, 94, 0.08); }

.btn-ghost { background: transparent; color: var(--text-dim); }

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: rgba(226, 104, 90, 0.25);
}
.btn-danger:hover { background: rgba(226, 104, 90, 0.2); }

.btn-block { width: 100%; }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn:disabled { opacity: 0.55; pointer-events: none; }

.btn-edit-fecha {
  background: transparent;
  border: none;
  padding: 0 0 0 4px;
  font-size: 13px;
  vertical-align: middle;
  opacity: 0.75;
  filter: grayscale(0.3);
}
.btn-edit-fecha:active { transform: scale(0.9); }

.error-msg {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(226, 104, 90, 0.22);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  text-align: left;
}

.ok-msg {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(111, 191, 139, 0.22);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  text-align: left;
}

/* ---------- Layout general de la app ---------- */
.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 9, 8, 0.85);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar h2 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
  font-size: 19px;
  margin: 0;
}

.topbar .back-btn {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--gold);
  padding: 4px 8px 4px 0;
}

main.view {
  flex: 1;
  padding: 18px 16px 110px;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  animation: fadeIn 0.28s ease both;
}

/* ---------- Barra inferior de navegación ---------- */
.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: calc(14px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 30;
  display: flex;
  gap: 2px;
  width: calc(100% - 24px);
  max-width: 460px;
  background: rgba(20, 18, 13, 0.92);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px;
  box-shadow: var(--shadow-lg);
}

.nav-item {
  flex: 1;
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 8px 2px 7px;
  color: var(--muted);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: 14px;
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-item svg { width: 21px; height: 21px; transition: transform 0.15s ease; }
.nav-item.active { color: var(--gold-bright); background: rgba(205, 164, 94, 0.12); }
.nav-item.active svg { transform: translateY(-1px); }

/* ---------- Tarjetas / dashboard ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 22px;
}

.stat-card {
  background: linear-gradient(165deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  animation: riseIn 0.4s ease both;
}
.stat-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.7;
}

.stat-card .label {
  font-size: 11.5px;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.stat-card .value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
}

.stat-card .sublabel {
  font-size: 11.5px;
  color: var(--danger);
  opacity: 0.85;
  margin-top: 4px;
  font-weight: 600;
}

/* ---------- Accesos rápidos (inicio) ---------- */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 18px;
}

.quick-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  background: linear-gradient(165deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 6px 11px;
  color: var(--text-dim);
  font-size: 11.5px;
  font-weight: 600;
  box-shadow: var(--shadow);
  transition: transform 0.1s ease, border-color 0.15s ease, color 0.15s ease;
}
.quick-action svg { width: 20px; height: 20px; color: var(--gold); }
.quick-action:active { transform: scale(0.96); border-color: var(--border-strong); }
.quick-action:hover { color: var(--text); }

.stat-card.accent { background: linear-gradient(165deg, var(--gold-bright), var(--gold)); border-color: transparent; }
.stat-card.accent::before { display: none; }
.stat-card.accent .label { color: rgba(36, 28, 15, 0.65); }
.stat-card.accent .value { color: var(--gold-ink); }
.stat-card.warn .value { color: var(--danger); }

.section-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  margin: 26px 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text);
}

.card {
  background: linear-gradient(165deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  margin-bottom: 12px;
}

.list-item {
  background: linear-gradient(165deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: transform 0.12s ease, border-color 0.15s ease;
  animation: riseIn 0.35s ease both;
}
.list-item:nth-child(1) { animation-delay: 0.02s; }
.list-item:nth-child(2) { animation-delay: 0.05s; }
.list-item:nth-child(3) { animation-delay: 0.08s; }
.list-item:nth-child(4) { animation-delay: 0.11s; }
.list-item:nth-child(5) { animation-delay: 0.14s; }
.list-item:nth-child(6) { animation-delay: 0.17s; }
.list-item:nth-child(7) { animation-delay: 0.2s; }
.list-item:nth-child(8) { animation-delay: 0.23s; }

.list-item:active { transform: scale(0.99); border-color: var(--border-strong); }

.list-item .avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--black);
  color: var(--gold-bright);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  flex-shrink: 0;
}

.list-item .info { flex: 1; min-width: 0; }
.list-item .info .title {
  font-weight: 600;
  font-size: 15px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.list-item .info .subtitle { font-size: 12.5px; color: var(--text-dim); margin-top: 2px; }
.list-item .amount {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 15px;
  text-align: right;
  white-space: nowrap;
}
.list-item .amount.debt { color: var(--danger); }
.list-item .amount.ok { color: var(--success); }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 1px solid transparent;
}
.badge.pendiente { background: rgba(205, 164, 94, 0.14); color: var(--gold-bright); border-color: rgba(205, 164, 94, 0.3); }
.badge.pagada, .badge.pagado { background: var(--success-bg); color: var(--success); border-color: rgba(111, 191, 139, 0.28); }
.badge.parcial { background: var(--info-bg); color: var(--info); border-color: rgba(131, 169, 196, 0.28); }
.badge.atrasada { background: var(--danger-bg); color: var(--danger); border-color: rgba(226, 104, 90, 0.3); }
.badge.activo { background: rgba(205, 164, 94, 0.14); color: var(--gold-bright); border-color: rgba(205, 164, 94, 0.3); }
.badge.cancelado { background: rgba(141, 129, 112, 0.14); color: var(--muted); border-color: var(--border); }

.search-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.search-bar input {
  border: none;
  background: transparent;
  color: var(--text);
  flex: 1;
  outline: none;
  padding: 0;
}
.search-bar input::placeholder { color: var(--muted); }

.fab {
  position: fixed;
  right: 20px;
  bottom: calc(96px + env(safe-area-inset-bottom));
  z-index: 25;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  color: var(--gold-ink);
  border: none;
  font-size: 26px;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(205, 164, 94, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.12s ease;
}
.fab:active { transform: scale(0.94); }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-dim);
}
.empty-state .icon {
  font-size: 34px;
  margin-bottom: 14px;
  width: 64px;
  height: 64px;
  line-height: 64px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ---------- Modal / hoja inferior ---------- */
.sheet-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(3, 3, 2, 0.65);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 50;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  animation: fadeIn 0.18s ease both;
}

.sheet {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-bottom: none;
  width: 100%;
  max-width: 480px;
  max-height: 92vh;
  overflow-y: auto;
  border-radius: 24px 24px 0 0;
  padding: 20px 20px calc(24px + env(safe-area-inset-bottom));
  animation: slideUp 0.26s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: var(--shadow-lg);
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.sheet .sheet-handle {
  width: 36px;
  height: 4px;
  background: var(--border-strong);
  border-radius: 4px;
  margin: 0 auto 18px;
}

.sheet h3 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0 0 18px;
  font-size: 19px;
}

.row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.toast {
  position: fixed;
  top: calc(16px + env(safe-area-inset-top));
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 13.5px;
  z-index: 100;
  box-shadow: var(--shadow-lg);
  max-width: 90%;
  text-align: center;
  animation: riseIn 0.2s ease both;
}
.toast.error { border-color: rgba(226, 104, 90, 0.4); color: var(--danger); }
.toast.success { border-color: rgba(205, 164, 94, 0.45); color: var(--gold-bright); }

.spinner {
  width: 26px;
  height: 26px;
  border: 3px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 30px auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

.tabs {
  display: flex;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 4px;
  border-radius: 14px;
  margin-bottom: 16px;
}
.tab-btn {
  flex: 1;
  background: none;
  border: none;
  padding: 9px 6px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
}
.tab-btn.active {
  background: var(--surface-hover);
  color: var(--gold-bright);
  box-shadow: inset 0 0 0 1px var(--border-strong);
}

.muted { color: var(--muted); }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

.progress-bar {
  height: 8px;
  background: var(--black);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-top: 10px;
}
.progress-bar .fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-dim), var(--gold-bright));
  border-radius: 8px;
  transition: width 0.4s ease;
}

.range-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.range-chip {
  flex: 1;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 10px;
  padding: 8px 0;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
  font-family: inherit;
}
.range-chip:active { transform: scale(0.96); }
.range-chip.active {
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  color: var(--gold-ink);
  border-color: transparent;
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 120px;
  padding-top: 10px;
}
.bar-chart .bar {
  flex: 1;
  height: 100%;
  background: var(--black);
  border: 1px solid var(--border);
  border-radius: 6px 6px 0 0;
  position: relative;
  min-height: 4px;
}
.bar-chart .bar .fill {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(180deg, var(--gold-bright), var(--gold-dim));
  border-radius: 6px 6px 0 0;
  transition: height 0.4s ease;
}

/* Cifras en negrita dentro de tarjetas (totales, resúmenes) en mono */
.card b, .card strong { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }