:root {
  --azul: #0f4c75;
  --azul-oscuro: #0a3252;
  --celeste: #3282b8;
  --fondo: #f4f7fa;
  --texto: #1b2733;
  --gris: #6b7885;
  --borde: #dde4ea;
  --verde: #1f9d55;
  --rojo: #d1453b;
  --ambar: #b8860b;
  --blanco: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--fondo);
  color: var(--texto);
}

.topbar {
  background: var(--azul);
  color: white;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { font-weight: 600; font-size: 1.1rem; }

.usuario-actual {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  opacity: 0.9;
}

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--fondo);
  padding: 1rem;
}
.login-box {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: 10px;
  padding: 2rem;
  width: 100%;
  max-width: 340px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}
.login-box .brand { color: var(--azul); }

.tabs { display: flex; gap: 0.4rem; flex-wrap: wrap; }

.tab-btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}
.tab-btn.active { background: var(--celeste); border-color: var(--celeste); font-weight: 600; }

#main { max-width: 1100px; margin: 0 auto; padding: 1rem; padding-bottom: 4rem; }

h2 { margin-top: 0; color: var(--azul-oscuro); }
h3 { color: var(--azul-oscuro); }

.card {
  background: white;
  border: 1px solid var(--borde);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1rem;
}

table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--borde); }
th { color: var(--gris); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; }
tr:hover td { background: #fafcfe; }
tr.clickable { cursor: pointer; }

.existencia-positiva { color: var(--verde); font-weight: 700; }
.existencia-negativa { color: var(--rojo); font-weight: 700; }
.existencia-cero { color: var(--gris); font-weight: 700; }

.pill {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.pill.compra { background: #e6f4ea; color: var(--verde); }
.pill.venta { background: #fdeceb; color: var(--rojo); }
.pill.aviso_arribo { background: #e8f1fb; color: var(--azul); }
.pill.guia_pesca { background: #fff6e0; color: var(--ambar); }
.pill.factura { background: #efe6f7; color: #6a3fa0; }
.pill.otro { background: #eee; color: var(--gris); }
.pill.manual { background: #fff0e0; color: #a05a00; }
.pill.pendiente { background: #fdecea; color: #a5322a; }

button.btn {
  background: var(--celeste);
  color: white;
  border: none;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
}
button.btn:hover { background: var(--azul); }
button.btn.secundario { background: white; color: var(--azul); border: 1px solid var(--azul); }
button.btn.peligro { background: white; color: var(--rojo); border: 1px solid var(--rojo); }
button.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.8rem; flex-wrap: wrap; gap: 0.5rem; }

input[type=text], input[type=number], input[type=date], input[type=file], select, textarea {
  padding: 0.5rem;
  border: 1px solid var(--borde);
  border-radius: 6px;
  font-size: 0.92rem;
  width: 100%;
  font-family: inherit;
}

.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0.7rem; }
.form-field { display: flex; flex-direction: column; gap: 0.25rem; }
.form-field label { font-size: 0.8rem; color: var(--gris); font-weight: 600; }

.especies-editor { margin-top: 0.8rem; }
.especie-row { display: grid; grid-template-columns: 2fr 1fr 1fr auto; gap: 0.5rem; margin-bottom: 0.5rem; align-items: center; }
.especie-row input { width: 100%; }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(10,20,30,0.5);
  display: flex; align-items: flex-start; justify-content: center;
  overflow-y: auto; padding: 2rem 1rem; z-index: 100;
}
.modal-backdrop.hidden { display: none; }
.modal {
  background: white; border-radius: 10px; padding: 1.2rem; max-width: 700px; width: 100%;
}

.toast {
  position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%);
  background: var(--azul-oscuro); color: white; padding: 0.6rem 1.2rem;
  border-radius: 8px; font-size: 0.9rem; z-index: 200;
}
.toast.error { background: var(--rojo); }
.toast.hidden { display: none; }

.empty { color: var(--gris); font-style: italic; padding: 1rem 0; }

.muted { color: var(--gris); font-size: 0.85rem; }

.close-x {
  float: right; background: none; border: none; font-size: 1.2rem; cursor: pointer; color: var(--gris);
}

.doc-link { color: var(--celeste); text-decoration: none; font-weight: 600; }
.doc-link:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .especie-row { grid-template-columns: 1fr; }
}