:root {
  --azul: #0D3B65;
  --verde: #4DB69C;
  --hueso: #E9E5D6;
  --gris: #4A4A4A;
  --negro: #1B1B1B;
  --fondo: #F6F4EE;
  --superficie: #FFFFFF;
  --texto: var(--negro);
  --suave: #6B6B6B;
  --borde: #DCD8CB;
  --error: #B3261E;
  --tabs-h: 60px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fondo: #12161B;
    --superficie: #1C2229;
    --texto: #EDEBE4;
    --suave: #A3A39C;
    --borde: #2E363F;
    --error: #F2867D;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; }
body {
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}
button, input, textarea, select { font: inherit; color: inherit; }
input, textarea { font-size: 16px; } /* evita el zoom en iOS */

h1, h2, h3 { margin: 0; font-weight: 650; letter-spacing: -0.01em; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1rem; margin: 22px 0 8px; color: var(--suave); text-transform: uppercase; letter-spacing: .04em; font-size: .8rem; }

.banner {
  position: sticky; top: 0; z-index: 20;
  background: #8A6D00; color: #fff; text-align: center;
  font-size: .85rem; line-height: 26px;
  height: calc(26px + env(safe-area-inset-top)); padding: env(safe-area-inset-top) 12px 0;
}
.con-banner .vista { padding-top: 12px; }
.con-banner .hilo { height: calc(100dvh - 26px - env(safe-area-inset-top)); }
.error:empty { min-height: 0; margin: 0; }

.vista {
  max-width: 640px; margin: 0 auto;
  padding: calc(env(safe-area-inset-top) + 12px) 16px calc(var(--tabs-h) + env(safe-area-inset-bottom) + 24px);
}
.cab { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; min-height: 40px; }

/* Login */
#v-login { display: grid; place-items: center; min-height: 100dvh; padding-bottom: 16px; }
.login-caja { width: 100%; max-width: 360px; }
.login-caja h1 { color: var(--azul); font-size: 2rem; }
@media (prefers-color-scheme: dark) { .login-caja h1 { color: var(--verde); } }
.sub { color: var(--suave); margin: 4px 0 24px; }

label { display: block; font-size: .9rem; color: var(--suave); margin-bottom: 12px; }
label input:not([type=radio]):not([type=file]), textarea, input[type=datetime-local] {
  display: block; width: 100%; margin-top: 4px;
  padding: 12px; border: 1px solid var(--borde); border-radius: 10px;
  background: var(--superficie); color: var(--texto);
}
textarea { resize: vertical; width: 100%; padding: 12px; border: 1px solid var(--borde); border-radius: 10px; background: var(--superficie); }
input:focus-visible, textarea:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--verde); outline-offset: 2px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 18px; border-radius: 10px;
  border: 1px solid var(--borde); background: var(--superficie);
  cursor: pointer; user-select: none; -webkit-user-select: none;
  transition: transform .12s ease, opacity .12s ease;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; cursor: default; transform: none; }
.btn.primario { background: var(--azul); border-color: var(--azul); color: #fff; width: 100%; font-weight: 600; }
.btn.chico { min-height: 36px; padding: 0 12px; font-size: .9rem; }
.btn.peligro { color: var(--error); }

.error { color: var(--error); font-size: .9rem; min-height: 1em; white-space: pre-line; }
.ok { color: var(--verde); font-size: .95rem; }
.ayuda { color: var(--suave); font-size: .85rem; margin: 6px 0 14px; }
.pad { padding: 0 16px; }

/* Publicar */
.segmento { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--superficie); border: 1px solid var(--borde); border-radius: 12px; padding: 3px; margin-bottom: 14px; }
.segmento label { margin: 0; }
.segmento input { position: absolute; opacity: 0; pointer-events: none; }
.segmento span { display: block; text-align: center; padding: 9px 0; border-radius: 9px; color: var(--texto); font-size: .92rem; cursor: pointer; }
.segmento input:checked + span { background: var(--azul); color: #fff; font-weight: 600; }
.segmento input:focus-visible + span { outline: 2px solid var(--verde); }

.soltar {
  display: grid; place-items: center; min-height: 120px; margin: 0;
  border: 1.5px dashed var(--borde); border-radius: 14px; background: var(--superficie);
  color: var(--suave); cursor: pointer; text-align: center; padding: 12px;
}
.soltar.lleno { min-height: 56px; }
.previas { display: flex; gap: 8px; overflow-x: auto; padding: 10px 0 0; }
.previas img, .previas video { width: 84px; height: 84px; object-fit: cover; border-radius: 8px; flex: none; background: var(--borde); }

.contador { text-align: right; color: var(--suave); font-size: .8rem; margin: 4px 0 0; }
.contador .pasado { color: var(--error); font-weight: 600; }

.cuando { border: 0; padding: 0; margin: 16px 0; }
.cuando legend { color: var(--suave); font-size: .9rem; padding: 0; margin-bottom: 6px; }
.opcion { display: inline-flex; align-items: center; gap: 6px; margin: 0 18px 8px 0; color: var(--texto); font-size: 1rem; }
.opcion input { width: 18px; height: 18px; accent-color: var(--azul); }

.progreso { height: 6px; background: var(--borde); border-radius: 3px; overflow: hidden; margin-bottom: 12px; }
#barra { height: 100%; width: 0; background: var(--verde); transition: width .2s ease; }

/* Listas */
.lista { list-style: none; margin: 0; padding: 0; }
.lista li {
  background: var(--superficie); border: 1px solid var(--borde); border-radius: 12px;
  padding: 12px 14px; margin-bottom: 8px;
}
.lista li.clic { cursor: pointer; }
.lista li.clic:active { transform: scale(.99); }
.fila { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; }
.fila strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.meta { color: var(--suave); font-size: .82rem; white-space: nowrap; }
.extracto { color: var(--suave); font-size: .9rem; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pendiente-resp { border-left: 4px solid var(--verde) !important; }
.chip { display: inline-block; font-size: .75rem; padding: 2px 8px; border-radius: 99px; background: var(--hueso); color: var(--gris); margin-left: 6px; }
.chip.err { background: #F7D9D6; color: #8C1D18; }
.chip.ok { background: #D6EFE7; color: #1E5E4D; }
.acciones { display: flex; gap: 8px; margin-top: 8px; }
.vacio { text-align: center; color: var(--suave); padding: 48px 12px; }
.vacio .grande { font-size: 1.3rem; color: var(--texto); font-weight: 600; margin-bottom: 4px; }
.cuota { float: right; text-transform: none; letter-spacing: 0; }

/* Hilo */
.hilo { display: flex; flex-direction: column; height: 100dvh; padding-bottom: calc(var(--tabs-h) + env(safe-area-inset-bottom)); }
.hilo .cab { flex: none; padding: 0 0 8px; border-bottom: 1px solid var(--borde); }
.hilo-titulo { flex: 1; display: flex; flex-direction: column; align-items: flex-end; }
#hilo-ventana { font-size: .8rem; color: var(--suave); }
.msgs { flex: 1; overflow-y: auto; padding: 12px 0; display: flex; flex-direction: column; gap: 6px; overscroll-behavior: contain; }
.burbuja { max-width: 80%; padding: 8px 12px; border-radius: 16px; background: var(--superficie); border: 1px solid var(--borde); white-space: pre-wrap; word-wrap: break-word; }
.burbuja.mia { align-self: flex-end; background: var(--azul); border-color: var(--azul); color: #fff; }
.burbuja .hora { display: block; font-size: .7rem; opacity: .65; margin-top: 2px; text-align: right; }
.burbuja img { max-width: 220px; border-radius: 10px; display: block; }
.oculto { font-style: normal; opacity: .75; font-size: .88rem; }
.responder { flex: none; display: flex; gap: 8px; align-items: flex-end; padding-top: 8px; }
.responder textarea { flex: 1; resize: none; max-height: 140px; }
.responder .btn { width: auto; }

.tarjeta { background: var(--superficie); border: 1px solid var(--borde); border-radius: 12px; padding: 14px; margin-bottom: 12px; }
.tarjeta p { margin: 0 0 8px; }
code { word-break: break-all; font-size: .82rem; }

/* Tabs */
.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  display: grid; grid-template-columns: repeat(4, 1fr);
  height: calc(var(--tabs-h) + env(safe-area-inset-bottom)); padding-bottom: env(safe-area-inset-bottom);
  background: var(--superficie); border-top: 1px solid var(--borde);
}
.tabs a { display: grid; place-items: center; text-decoration: none; color: var(--suave); font-size: .85rem; position: relative; user-select: none; -webkit-user-select: none; }
.tabs a.activo { color: var(--azul); font-weight: 650; }
@media (prefers-color-scheme: dark) { .tabs a.activo { color: var(--verde); } }
.badge { position: absolute; top: 8px; right: calc(50% - 44px); background: var(--verde); color: #fff; font-size: .7rem; min-width: 18px; height: 18px; border-radius: 9px; display: grid; place-items: center; padding: 0 5px; }

@media (hover: hover) {
  .btn:hover { opacity: .9; }
  .lista li.clic:hover { border-color: var(--verde); }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}