:root {
  --papel: #F6F3EC;
  --papel-panel: #FFFFFF;
  --tinta: #1B2430;
  --tinta-suave: #55606E;
  --linea: #DAD4C4;
  --linea-fuerte: #B9AF95;
  --azul-pizarra: #3D5A80;
  --azul-pizarra-oscuro: #2C4360;
  --verde-clinico: #4C7A5E;
  --verde-clinico-fondo: #E6EFE8;
  --ambar: #B8793B;
  --ambar-fondo: #F5E9D8;
  --rojo-ladrillo: #A33B3B;
  --rojo-ladrillo-fondo: #F5E1DF;

  --sidebar-fondo: #16202C;
  --sidebar-texto: #C9D2DB;
  --sidebar-texto-tenue: #7C8896;
  --sidebar-activo: #F6F3EC;
  --sidebar-linea: #29394B;

  --radio: 3px;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
}

[data-tema="oscuro"] {
  --papel: #12171D;
  --papel-panel: #1A222B;
  --tinta: #ECE7DA;
  --tinta-suave: #9AA5AF;
  --linea: #2C3542;
  --linea-fuerte: #3D4A59;
  --azul-pizarra: #7FA0C8;
  --azul-pizarra-oscuro: #A9C2DE;
  --verde-clinico: #8FBC9E;
  --verde-clinico-fondo: #1E2B22;
  --ambar: #E0AD6E;
  --ambar-fondo: #2E2417;
  --rojo-ladrillo: #E08A8A;
  --rojo-ladrillo-fondo: #301B1B;

  --sidebar-fondo: #0C1218;
  --sidebar-texto: #C9D2DB;
  --sidebar-texto-tenue: #5D6A78;
  --sidebar-activo: #F6F3EC;
  --sidebar-linea: #1D2733;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

body {
  background: var(--papel);
  color: var(--tinta);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 600; margin: 0; }

.oculto { display: none !important; }

button { font-family: inherit; }

::selection { background: var(--azul-pizarra); color: #fff; }

:focus-visible {
  outline: 2px solid var(--azul-pizarra);
  outline-offset: 2px;
}

code, .mono { font-family: var(--mono); }

/* --------------------------------------------------------------------
   Botones
   -------------------------------------------------------------------- */

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: var(--radio);
  padding: 0.62rem 1.05rem;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-full { width: 100%; }

.btn-primario {
  background: var(--tinta);
  color: var(--papel);
}
.btn-primario:hover { background: var(--azul-pizarra-oscuro); }

.btn-fantasma {
  background: transparent;
  color: var(--sidebar-texto);
  border-color: var(--sidebar-linea);
}
.btn-fantasma:hover { background: var(--sidebar-linea); color: #fff; }

.btn-linea {
  background: transparent;
  color: var(--tinta);
  border-color: var(--linea-fuerte);
}
.btn-linea:hover { border-color: var(--tinta); }

.btn-peligro {
  background: transparent;
  color: var(--rojo-ladrillo);
  border-color: var(--rojo-ladrillo);
}
.btn-peligro:hover { background: var(--rojo-ladrillo); color: #fff; }

.btn-pequeno { padding: 0.34rem 0.7rem; font-size: 0.78rem; }

.btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* --------------------------------------------------------------------
   Botón de tema
   -------------------------------------------------------------------- */

.btn-tema {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--linea-fuerte);
  background: var(--papel-panel);
  display: grid;
  place-items: center;
  cursor: pointer;
  flex-shrink: 0;
}

.icono-tema {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--tinta);
  box-shadow: 8px 0 0 -3px var(--papel);
}

[data-tema="oscuro"] .icono-tema {
  background: #E8D9A8;
  box-shadow: none;
}

.pantalla-login .btn-tema {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
}

.barra-pie .btn-tema {
  border-color: var(--sidebar-linea);
  background: transparent;
}
.barra-pie .icono-tema { background: var(--sidebar-texto); }
[data-tema="oscuro"] .barra-pie .icono-tema { background: #E8D9A8; }

/* ======================================================================
   PANTALLA DE LOGIN
   ====================================================================== */

.pantalla-login {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  background: var(--papel);
}

.login-marca {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 4rem 5vw;
  border-right: 1px solid var(--linea);
}

.login-marca-logo {
  width: 96px;
  height: 96px;
  object-fit: contain;
  margin-bottom: 1.75rem;
  filter: drop-shadow(0 2px 6px rgba(27, 36, 48, 0.12));
}

.login-marca-titulo {
  font-size: clamp(2.1rem, 4.4vw, 3.1rem);
  line-height: 1.05;
  max-width: 11ch;
  color: var(--tinta);
}

.panel-acceso {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.ficha-login {
  width: 100%;
  max-width: 360px;
  margin: 0 5vw;
  padding: 2.25rem;
  background: var(--papel-panel);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  display: flex;
  flex-direction: column;
}

.login-alt-acciones {
  margin-top: 1.5rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--linea);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.login-alt-acciones a {
  font-size: 0.85rem;
  color: var(--azul-pizarra);
  text-decoration: none;
  font-weight: 600;
}

.login-alt-acciones a:hover { text-decoration: underline; }

.ficha-login h2 { font-size: 1.3rem; margin-bottom: 0.35rem; }

.ficha-login-nota {
  margin: 0 0 1.5rem;
  color: var(--tinta-suave);
  font-size: 0.88rem;
}

.ficha-login label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--tinta-suave);
  margin: 0.85rem 0 0.35rem;
}

.ficha-login button[type="submit"] { margin-top: 1.5rem; }

#form-crear-paciente,
#form-crear-doctor {
  display: flex;
  flex-direction: column;
}

#form-crear-paciente,
#form-crear-doctor {
  display: flex;
  flex-direction: column;
}

/* ======================================================================
   APP / LAYOUT
   ====================================================================== */

.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.barra-lateral {
  background: var(--sidebar-fondo);
  color: var(--sidebar-texto);
  display: flex;
  flex-direction: column;
  padding: 1.75rem 1.1rem;
  position: sticky;
  top: 0;
  height: 100vh;
}

.barra-marca { padding: 0 0.5rem 1.5rem; border-bottom: 1px solid var(--sidebar-linea); margin-bottom: 1rem; }
.barra-marca-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  margin-bottom: 0.65rem;
}
.barra-marca h1 { color: #fff; font-size: 1.1rem; line-height: 1.25; }

.barra-nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-align: left;
  background: transparent;
  border: none;
  border-left: 2px solid transparent;
  color: var(--sidebar-texto);
  padding: 0.65rem 0.6rem;
  border-radius: 2px;
  font-size: 0.92rem;
  cursor: pointer;
}

.nav-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--sidebar-texto-tenue);
}

.nav-item:hover { background: var(--sidebar-linea); }

.nav-item.activo {
  background: var(--sidebar-linea);
  border-left-color: var(--sidebar-activo);
  color: #fff;
}
.nav-item.activo .nav-num { color: var(--sidebar-activo); }

.barra-pie {
  border-top: 1px solid var(--sidebar-linea);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.barra-pie > .btn-tema { align-self: flex-start; }

.barra-sesion { display: flex; flex-direction: column; gap: 0.2rem; }
.barra-sesion-user { font-weight: 600; color: #fff; font-size: 0.9rem; }

.etiqueta-rol {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: lowercase;
  color: var(--sidebar-texto-tenue);
  width: fit-content;
}

/* --------------------------------------------------------------------
   Contenido principal
   -------------------------------------------------------------------- */

.contenido { padding: 2.25rem 3rem 4rem; max-width: 1180px; }

.contenido-encabezado {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--linea);
}

.contenido-index {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--tinta-suave);
  display: block;
  margin-bottom: 0.4rem;
}

#vista-titulo { font-size: 2rem; }

/* --------------------------------------------------------------------
   Fichas (reemplazan a las "cards" genéricas)
   -------------------------------------------------------------------- */

.ficha {
  background: var(--papel-panel);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  padding: 1.75rem;
  margin-bottom: 1.75rem;
}

.ficha-encabezado {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
  flex-wrap: wrap;
}

.ficha-encabezado h3 { font-size: 1.15rem; }
.ficha-encabezado p { margin: 0.25rem 0 0; color: var(--tinta-suave); font-size: 0.85rem; }

.rejilla-fichas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--linea);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  overflow: hidden;
  margin-bottom: 2rem;
}

.dato-resumen {
  background: var(--papel-panel);
  padding: 1.35rem 1.25rem;
}

.dato-resumen .num {
  font-family: var(--serif);
  font-size: 2.1rem;
  display: block;
  line-height: 1;
}

.dato-resumen .lbl {
  font-size: 0.8rem;
  color: var(--tinta-suave);
  margin-top: 0.4rem;
  display: block;
}

/* --------------------------------------------------------------------
   Formularios
   -------------------------------------------------------------------- */

.form-rejilla {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem;
  align-items: end;
}

.campo { display: flex; flex-direction: column; gap: 0.35rem; }

.campo label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--tinta-suave);
}

input, select, textarea {
  font-family: var(--sans);
  font-size: 0.9rem;
  padding: 0.58rem 0.7rem;
  border: 1px solid var(--linea-fuerte);
  border-radius: var(--radio);
  background: var(--papel-panel);
  color: var(--tinta);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--azul-pizarra);
}

.form-acciones { margin-top: 1.25rem; display: flex; gap: 0.75rem; }

/* --------------------------------------------------------------------
   Tablas
   -------------------------------------------------------------------- */

.tabla-envoltura { overflow-x: auto; }

table.tabla {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.tabla thead th {
  text-align: left;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--tinta-suave);
  font-weight: 600;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--linea-fuerte);
  white-space: nowrap;
}

.tabla tbody td {
  padding: 0.7rem 0.75rem;
  border-bottom: 1px solid var(--linea);
  vertical-align: middle;
}

.tabla tbody tr:hover { background: rgba(61, 90, 128, 0.05); }

.tabla .celda-mono { font-family: var(--mono); font-size: 0.83rem; }
.tabla .celda-vacia { text-align: center; padding: 2.5rem 1rem; color: var(--tinta-suave); }

/* --------------------------------------------------------------------
   Etiquetas de estado
   -------------------------------------------------------------------- */

.pastilla {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
}

.pastilla-pendiente { background: var(--ambar-fondo); color: var(--ambar); }
.pastilla-atendida  { background: var(--verde-clinico-fondo); color: var(--verde-clinico); }
.pastilla-cancelada { background: var(--rojo-ladrillo-fondo); color: var(--rojo-ladrillo); }
.pastilla-doctor    { background: var(--verde-clinico-fondo); color: var(--verde-clinico); }
.pastilla-cliente   { background: var(--ambar-fondo); color: var(--ambar); }

/* --------------------------------------------------------------------
   Avisos / toasts / vacíos
   -------------------------------------------------------------------- */

.aviso {
  padding: 0.65rem 0.9rem;
  border-radius: var(--radio);
  font-size: 0.85rem;
  margin-top: 1rem;
}
.aviso-error { background: var(--rojo-ladrillo-fondo); color: var(--rojo-ladrillo); }
.aviso-exito { background: var(--verde-clinico-fondo); color: var(--verde-clinico); }

.toast {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  font-size: 0.85rem;
  padding: 0.65rem 1rem;
  border-radius: var(--radio);
  border: 1px solid var(--linea-fuerte);
  background: var(--papel-panel);
  color: var(--tinta);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
}
.toast.exito { background: var(--verde-clinico-fondo); color: var(--verde-clinico); border-color: transparent; }
.toast.error { background: var(--rojo-ladrillo-fondo); color: var(--rojo-ladrillo); border-color: transparent; }

.estado-vacio {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--tinta-suave);
}

.estado-vacio strong { display: block; color: var(--tinta); font-family: var(--serif); font-size: 1.1rem; margin-bottom: 0.35rem; }

.candado-nota {
  font-size: 0.85rem;
  color: var(--tinta-suave);
  border: 1px dashed var(--linea-fuerte);
  border-radius: var(--radio);
  padding: 1rem 1.25rem;
}

/* --------------------------------------------------------------------
   Tabs internos (alta de cuentas: cliente / doctor)
   -------------------------------------------------------------------- */

.sub-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1.4rem;
  border-bottom: 1px solid var(--linea);
}

.sub-tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.55rem 0.9rem;
  font-size: 0.88rem;
  color: var(--tinta-suave);
  cursor: pointer;
  margin-bottom: -1px;
}

.sub-tab.activo {
  color: var(--tinta);
  border-bottom-color: var(--azul-pizarra);
  font-weight: 600;
}

/* --------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------- */

@media (max-width: 980px) {
  .pantalla-login { grid-template-columns: 1fr; }
  .login-marca { border-right: none; border-bottom: 1px solid var(--linea); padding: 3rem 6vw 2rem; }
  .ficha-login { margin: 2.5rem 6vw; max-width: none; }
}

@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .barra-lateral { position: relative; height: auto; }
  .contenido { padding: 1.5rem 1.25rem 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}