:root {
  --bg-main: #0a0a0b;
  --bg-panel: #16171a;
  --bg-panel-2: #1d1e22;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text-primary: #f3f3ef;
  --text-secondary: #ababa4;
  --text-muted: #747470;
  --accent-gold: #d4af37;
  --accent-gold-soft: #e8cc6c;
  --accent-bronze: #9a6b1f;
  --danger: #e5484d;
  --ok: #3ecf8e;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-main);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  background-image:
    radial-gradient(900px 500px at 15% -10%, rgba(212, 175, 55, 0.08), transparent 60%),
    radial-gradient(700px 500px at 100% 0%, rgba(212, 175, 55, 0.05), transparent 55%);
  background-attachment: fixed;
  min-height: 100vh;
}

a { color: inherit; }
button { font-family: inherit; }

/* ---------- Login ---------- */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; }
.login-card {
  width: 100%; max-width: 360px; text-align: center;
  background: linear-gradient(180deg, var(--bg-panel), var(--bg-panel-2));
  border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
  padding: 40px 32px; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}
.login-mark {
  width: 52px; height: 52px; margin: 0 auto 20px; border-radius: 14px;
  background: linear-gradient(135deg, var(--accent-gold-soft), var(--accent-bronze));
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 22px; color: #141517;
}
.login-card h1 { font-size: 19px; font-weight: 700; margin: 0 0 6px; }
.login-sub { color: var(--text-muted); font-size: 13px; margin: 0 0 28px; line-height: 1.5; }
.login-card input {
  width: 100%; padding: 13px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.03); color: var(--text-primary); font-size: 14px; margin-bottom: 14px;
}
.login-card input:focus { outline: none; border-color: var(--accent-gold); }
.login-card button {
  width: 100%; padding: 13px; border: none; border-radius: var(--radius-sm); cursor: pointer;
  background: linear-gradient(135deg, var(--accent-gold-soft), var(--accent-bronze));
  color: #141517; font-weight: 700; font-size: 14px; transition: transform 0.15s var(--ease);
}
.login-card button:hover { transform: translateY(-1px); }
.login-error { color: var(--danger); font-size: 12.5px; min-height: 1.2em; margin: 12px 0 0; }

/* ---------- Shell ---------- */
.shell { max-width: 1100px; margin: 0 auto; padding: 24px 24px 80px; }

.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 28px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-gold-soft), var(--accent-bronze));
  display: flex; align-items: center; justify-content: center; font-weight: 800; color: #141517; font-size: 16px;
}
.brand span { font-weight: 700; font-size: 16.5px; letter-spacing: -0.01em; }

.gasto-pill { display: flex; align-items: center; gap: 12px; }
.gasto-info { text-align: right; }
.gasto-info .num { font-size: 13px; font-weight: 600; }
.gasto-info .num .total { color: var(--text-muted); font-weight: 500; }
.gasto-barra { width: 140px; height: 5px; border-radius: 3px; background: rgba(255,255,255,0.08); overflow: hidden; margin-top: 5px; }
.gasto-barra-fill { height: 100%; background: linear-gradient(90deg, var(--accent-gold), var(--accent-gold-soft)); border-radius: 3px; transition: width 0.4s var(--ease); }
.gasto-barra-fill.alerta { background: linear-gradient(90deg, var(--danger), #ff8a8a); }

#btn-logout {
  width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border-subtle);
  background: rgba(255,255,255,0.03); color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; justify-content: center;
}
#btn-logout:hover { border-color: var(--border-strong); color: var(--text-primary); }

/* ---------- Modo tabs ---------- */
.modo-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.modo-tab {
  padding: 10px 18px; border-radius: 999px; border: 1px solid var(--border-subtle); background: rgba(255,255,255,0.02);
  color: var(--text-secondary); font-weight: 600; font-size: 13.5px; cursor: pointer; transition: all 0.15s var(--ease);
}
.modo-tab.activo { background: var(--accent-gold); border-color: var(--accent-gold); color: #141517; }

/* ---------- Panel de generación ---------- */
.panel {
  background: linear-gradient(180deg, var(--bg-panel), var(--bg-panel-2));
  border: 1px solid var(--border-subtle); border-radius: var(--radius-lg); padding: 22px;
}

#prompt {
  width: 100%; min-height: 86px; resize: vertical; padding: 14px; border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle); background: rgba(255,255,255,0.02); color: var(--text-primary);
  font-family: inherit; font-size: 14.5px; line-height: 1.55;
}
#prompt:focus { outline: none; border-color: var(--accent-gold); }

.opciones-fila { display: flex; align-items: center; gap: 14px; margin-top: 14px; flex-wrap: wrap; }

.resolucion-grupo { display: flex; gap: 6px; }
.resolucion-grupo button {
  padding: 7px 13px; border-radius: 8px; border: 1px solid var(--border-subtle); background: rgba(255,255,255,0.02);
  color: var(--text-secondary); font-size: 12.5px; font-weight: 600; cursor: pointer;
}
.resolucion-grupo button.activo { border-color: var(--accent-gold); color: var(--accent-gold); background: rgba(212,175,55,0.08); }

.ref-upload { display: flex; align-items: center; gap: 8px; }
.ref-upload label {
  display: flex; align-items: center; gap: 6px; padding: 7px 13px; border-radius: 8px; border: 1px dashed var(--border-strong);
  color: var(--text-muted); font-size: 12.5px; cursor: pointer;
}
.ref-upload label:hover { color: var(--text-secondary); border-color: var(--text-secondary); }
.ref-upload input { display: none; }
.ref-preview { width: 30px; height: 30px; border-radius: 6px; object-fit: cover; display: none; }
.ref-quitar { display: none; background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 11px; }

.costo-estimado { font-size: 12px; color: var(--text-muted); margin-left: auto; }

.btn-generar {
  margin-top: 16px; width: 100%; padding: 14px; border: none; border-radius: var(--radius-md); cursor: pointer;
  background: linear-gradient(135deg, var(--accent-gold-soft), var(--accent-bronze));
  color: #141517; font-weight: 700; font-size: 14.5px; transition: transform 0.15s var(--ease), opacity 0.15s;
}
.btn-generar:hover:not(:disabled) { transform: translateY(-1px); }
.btn-generar:disabled { opacity: 0.55; cursor: default; }

.panel-error { color: var(--danger); font-size: 13px; margin-top: 12px; min-height: 1.2em; }

/* ---------- Resultado en progreso / último ---------- */
.resultado {
  margin-top: 20px; border-radius: var(--radius-md); overflow: hidden; display: none;
  border: 1px solid var(--border-subtle); background: rgba(255,255,255,0.02);
}
.resultado.visible { display: block; }
.resultado img, .resultado video { width: 100%; display: block; max-height: 520px; object-fit: contain; background: #000; }
.resultado-pie { padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.resultado-costo { font-size: 12.5px; color: var(--text-muted); }
.resultado-descargar { font-size: 12.5px; font-weight: 600; color: var(--accent-gold); text-decoration: none; }

.cargando { display: none; align-items: center; gap: 10px; margin-top: 18px; color: var(--text-secondary); font-size: 13.5px; }
.cargando.visible { display: flex; }
.spinner { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--border-strong); border-top-color: var(--accent-gold); animation: girar 0.8s linear infinite; }
@keyframes girar { to { transform: rotate(360deg); } }

/* ---------- Galería ---------- */
.galeria-titulo { font-size: 13.5px; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.04em; margin: 40px 0 14px; }
.galeria-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; }
.galeria-item {
  position: relative; border-radius: var(--radius-sm); overflow: hidden; border: 1px solid var(--border-subtle);
  aspect-ratio: 1; background: rgba(255,255,255,0.02); cursor: pointer;
}
.galeria-item img, .galeria-item video { width: 100%; height: 100%; object-fit: cover; display: block; }
.galeria-item .tipo-badge {
  position: absolute; top: 7px; left: 7px; padding: 2px 7px; border-radius: 6px; font-size: 10px; font-weight: 700;
  background: rgba(10,10,11,0.75); color: var(--accent-gold); text-transform: uppercase; letter-spacing: 0.03em;
}
.galeria-item .borrar {
  position: absolute; top: 7px; right: 7px; width: 22px; height: 22px; border-radius: 6px; border: none;
  background: rgba(10,10,11,0.75); color: var(--text-secondary); cursor: pointer; opacity: 0; transition: opacity 0.15s;
  display: flex; align-items: center; justify-content: center; font-size: 13px;
}
.galeria-item:hover .borrar { opacity: 1; }
.galeria-item .borrar:hover { color: var(--danger); }
.galeria-vacio { color: var(--text-muted); font-size: 13.5px; padding: 30px 0; text-align: center; }

@media (max-width: 560px) {
  .shell { padding: 16px 14px 60px; }
  .gasto-info { display: none; }
}