:root {
  --navy: #123A52;
  --amber: #F2A93B;
  --cream: #FBF8F2;
  --texto: #1F2D36;
  --texto-muted: #6B7885;
  --borde: #E4DCCB;
  --blanco: #FFFFFF;
  --error: #B3261E;
  --error-bg: #FBEAE9;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--texto);
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

h1, h2, h3, .brand-title {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  color: var(--navy);
  margin: 0 0 4px;
}

a { color: var(--navy); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: var(--navy);
  color: var(--blanco);
}

.topbar-brand {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--blanco);
  text-decoration: none;
}
.topbar-brand span { color: var(--amber); }

.topbar-nav { display: flex; gap: 20px; align-items: center; }
.topbar-nav a {
  color: rgba(255,255,255,.82);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.topbar-nav a.is-active, .topbar-nav a:hover { color: var(--blanco); border-bottom-color: var(--amber); }
.topbar-nav .salir { color: rgba(255,255,255,.6); font-weight: 500; }

.content { max-width: 1100px; margin: 0 auto; padding: 28px 24px 60px; }
.content--angosto { max-width: 420px; margin: 60px auto; padding: 0 24px; }

.page-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 20px; gap: 12px; flex-wrap: wrap; }
.page-eyebrow { font-size: 12.5px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--amber); margin-bottom: 4px; }

.panel { background: var(--blanco); border: 1px solid var(--borde); border-radius: 12px; padding: 20px; }

.btn { display: inline-flex; align-items: center; gap: 6px; border-radius: 8px; padding: 9px 16px; font-weight: 600; font-size: 14px; text-decoration: none; border: 1px solid transparent; cursor: pointer; font-family: inherit; }
.btn-primary { background: var(--navy); color: var(--blanco); }
.btn-primary:hover { background: #0d2c3f; }
.btn-outline { background: var(--blanco); color: var(--navy); border-color: var(--navy); }
.btn-outline:hover { background: #f0f3f5; }
.btn-danger { background: var(--blanco); color: var(--error); border-color: var(--error); }
.btn-sm { padding: 6px 11px; font-size: 12.5px; }
.btn-amber { background: var(--amber); color: var(--navy); }

.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 12.5px; font-weight: 600; color: var(--texto-muted); }
.field input, .field select, .field textarea {
  border: 1px solid var(--borde); border-radius: 8px; padding: 9px 11px; font-size: 14px; font-family: inherit; background: var(--blanco); color: var(--texto);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--amber); outline-offset: 0; border-color: var(--amber); }

.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.gap-8 { display: flex; gap: 8px; }

.alert { padding: 12px 14px; border-radius: 8px; font-size: 14px; margin-bottom: 16px; }
.alert-error { background: var(--error-bg); color: var(--error); }
.alert-info { background: #EAF1F5; color: var(--navy); }

.empty-state { padding: 40px 20px; text-align: center; color: var(--texto-muted); }

.tabla { width: 100%; border-collapse: collapse; }
.tabla th, .tabla td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--borde); font-size: 14px; }
.tabla th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--texto-muted); }

.filtros { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.filtros .field { min-width: 160px; }

.grid-libros { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 18px; }
.card-libro { background: var(--blanco); border: 1px solid var(--borde); border-radius: 10px; overflow: hidden; text-decoration: none; color: var(--texto); display: block; }
.card-libro .portada { width: 100%; aspect-ratio: 2/3; object-fit: cover; background: var(--borde); display: block; }
.card-libro .sin-portada { width: 100%; aspect-ratio: 2/3; background: var(--borde); display: flex; align-items: center; justify-content: center; color: var(--texto-muted); font-size: 12px; text-align: center; padding: 8px; }
.card-libro .info { padding: 10px; }
.card-libro .titulo { font-weight: 700; font-size: 13.5px; margin-bottom: 2px; }
.card-libro .autor { font-size: 12px; color: var(--texto-muted); }
.badge { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 20px; margin-top: 6px; }
.badge-leido { background: #E3F0E6; color: #2C6B37; }
.badge-leyendo { background: #FCEFDA; color: #9A5F0B; }
.badge-pendiente { background: #EFEFEF; color: var(--texto-muted); }

.foto-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 4px; }
.foto-item { position: relative; }
.foto-item img { width: 100%; aspect-ratio: 3/4; object-fit: cover; border-radius: 6px; border: 2px solid transparent; }
.foto-item.es-limite { border-left: 3px solid var(--amber); padding-left: 8px; }
.foto-divisor { grid-column: 1 / -1; display: flex; align-items: center; gap: 8px; margin: 2px 0; }
.foto-divisor hr { flex: 1; border: none; border-top: 1px dashed var(--borde); }
.foto-divisor button { font-size: 11px; }

.grupo-fotos { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.grupo-fotos img { width: 110px; aspect-ratio: 3/4; object-fit: cover; border-radius: 8px; border: 1px solid var(--borde); }