:root {
  --bg: #0b1020;
  --card: #121936;
  --muted: #9aa3b2;
  --text: #e9edf3;
  --accent: #4f7cff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a {
  color: var(--accent);
  text-decoration: none;
}

.hidden {
  display: none !important;
}

/* Estado sin JS */
body.nojs #auth {
  display: block;
}
body.nojs #app {
  display: none;
}

/* Con JS */
body.ready .app {
  display: none;
}
body.ready.logged-in #app {
  display: block;
}
body.ready.logged-in #auth {
  display: none;
}
body.ready.logged-out #auth {
  display: block;
}
body.ready.logged-out #app {
  display: none;
}

.container {
  /* max-width: 980px; */
    max-width: 100%;
  margin: 0;
  padding: 24px;
}

.center {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding-top: 32px;
}

.card {
  background: var(--card);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  width: 100%;
  max-width: 560px;
}

.card-header {
  padding: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.card-header h1 {
  margin: 0 0 6px;
  font-weight: 700;
}

.card-sub {
  color: var(--muted);
}

/* Más aire arriba en el contenido */
.card-body {
  padding: 28px;
  padding-top: 40px;
}

label {
  display: block;
  margin: 14px 0 6px;
  font-weight: 600;
}

input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #0e1530;
  color: var(--text);
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #1a2144;
  color: var(--text);
  cursor: pointer;
}

.btn.primary {
  background: var(--accent);
  border-color: transparent;
  color: #fff;
  font-weight: 700;
}

.btn.ghost {
  background: transparent;
}

/* Botones centrados y con margen superior */
#loginForm .btn,
#signupForm .btn,
#resetForm .btn {
  display: block;
  margin: 20px auto 0 auto;
  width: 60%;
  max-width: 240px;
  text-align: center;
}

/* Botones secundarios como "Crear cuenta" */
#loginForm .btn.ghost,
#signupForm .btn.ghost {
  margin-top: 16px;
}

/* Links de ayuda centrados */
.help,
.separator {
  text-align: center;
  margin-top: 16px;
}

.alert {
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 12px;
  background: #2a2f52;
  border: 1px solid #39406d;
}

.alert.ok {
  background: #113d2b;
  border-color: #1f7f51;
}

.app {
  min-height: 100dvh;
}

.shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px;
}

nav.nav{
  background: var(--card);
  border-radius: 16px;
  padding: 16px;
  position: sticky;
  top: 24px;
  box-sizing: border-box;                 /* cuenta el padding */
  /* max-height: calc(100dvh - 48px);     */
  overflow-y: auto;                        /* hace scroll interno */
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}
#navList{ list-style:none; margin:0; padding:0; }


nav h2 {
  margin: 0 0 12px;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

nav a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-radius: 10px;
  color: var(--text);
  background: transparent;
}

nav a.active,
nav a:hover {
  background: #1a2144;
}

.badge {
  font-size: 0.75rem;
  background: #263266;
  padding: 2px 6px;
  border-radius: 999px;
  color: #cfe0ff;
}

section.content {
  background: var(--card);
  border-radius: 16px;
  padding: 16px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: 12px;
  margin-bottom: 12px;
}

article.section {
  display: none;
}

article.section.active {
  display: block;
}

@media (max-width: 100%) {
  .shell {
    grid-template-columns: 1fr;
  }
  nav.nav {
    position: static;
    height: auto;
  }
}

.card-header{
    display: flex;align-items: center;justify-content: space-between;padding: 0.5rem 1rem;border-bottom: 1px solid rgba(255,255,255,0.1);background-color: #0b1120;
}

  .card-header a:hover {
    background-color: #2563eb;
  }

  /* Visibilidad de secciones */
  .section { display: none; }
  .section.active { display: block; }

  /* Estado del link activo en el menú */


  #navList a.active {
    background: rgba(255,255,255,0.08);
    border-radius: 10px;
    font-weight: 600;
  }

  /* LAS CARDS */

  /* GRID */

.libcard:hover{
    transform:translateY(-2px);
    box-shadow:0 10px 28px rgba(0,0,0,.26);
    border-color:#2b3a55;
  }

  /* THUMB: alto fijo (coherente) y recorte */
.thumb{
    position:relative; overflow:hidden; border-bottom:1px solid #233047;
    aspect-ratio: 3 / 4;      /* relación tipo libro */
    max-height: 240px;        /* nunca gigante */
    background:#0c1320;
  }

 .badge{
    position:absolute; top:10px; left:10px;
    background:#0ea5e9; color:#081224; font-weight:700;
    font-size:12px; padding:4px 8px; border-radius:999px;
    border:1px solid rgba(255,255,255,.15);
  }

 
.title{ margin:0 0 6px; color:#e6edf3; font-weight:700; }
.meta{ margin:0; color:#9aa4b2; font-size:12px; }

.actions{
    display:flex; gap:18px; justify-content:space-between; margin-top:12px;
  }
.btn{
    flex:1; text-align:center; padding:10px 12px; border-radius:10px;
    text-decoration:none; font-weight:600; border:1px solid transparent;
}    
 
.btn.view{ background:#3b82f6; color:#fff; }
  #section-biblioteca .btn.dl{ background:transparent; border-color:#3b82f6; color:#cfe1ff; }
  #section-biblioteca .btn:hover{ filter:brightness(1.06); }

  /* placeholder si falla la imagen */
.thumb.empty{ display:grid; place-items:center;
    background:linear-gradient(135deg,#0e1630,#151d3a); color:#cfe1ff; font-weight:700; letter-spacing:.08em;
  }

   /* GRID */
  .libgrid{
    justify-content: flex-start;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-content: stretch;
    gap:20px; margin-top:12px;
  }
  @media (max-width:800px){ .lib-grid{ grid-template-columns:1fr; } }

  /* CARD */
  .libcard{
    background:#0f1726; border:1px solid #233047;
    border-radius:14px; overflow:hidden;
    box-shadow:0 6px 20px rgba(0,0,0,.18);
    transition:transform .15s ease, box-shadow .15s ease, border-color .15s ease;
       padding: 15px;
  }
  .libcard:hover{ transform:translateY(-2px); box-shadow:0 10px 28px rgba(0,0,0,.26); border-color:#2b3a55; }

  /* Título arriba con más padding */
  .libhead{ padding:12px 14px 0; }
  .libtitle{ margin:0; color:#e6edf3; font-weight:700; font-size:16px; line-height:1.2; }

  /* Portada: se adecua a la card (alto consistente + recorte) */
  .libthumb{ position:relative; overflow:hidden; border-top-left-radius:14px; border-top-right-radius:14px; margin-top:8px;
              aspect-ratio:3/4; max-height:240px; background:#0c1320; }

  /* Acciones con más padding */
  .libactions{ display:flex; gap:16px; padding:14px; }
  .libbtn{
    flex:1; display:inline-flex; align-items:center; justify-content:center;
    padding:12px 18px; border-radius:12px; font-weight:700; line-height:1;
    border:1px solid transparent; text-decoration:none;
  }
  .libbtn.primary{ background:#3b82f6; color:#fff; }
  .libbtn.ghost{ background:transparent; border-color:#3b82f6; color:#cfe1ff; }
  .libbtn:hover{ filter:brightness(1.06); }

  .thumb img{
    width:100%; height:100%;
    object-fit:cover; object-position:top;
    transition:transform .3s ease;
  }

  /* VISU WORD */
  .doc-card{background:#0f1726;border:1px solid #233047;border-radius:14px;padding:14px;margin-top:12px}
  .doc-title{margin:0 0 6px;color:#e6edf3;font-weight:700}
  .doc-note{margin:0 0 10px;color:#9aa4b2;font-size:13px}
  .doc-actions{display:flex;gap:10px;flex-wrap:wrap}
  .doc-btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:10px;
           font-weight:700;text-decoration:none;border:1px solid transparent}
  .doc-btn.primary{background:#3b82f6;color:#fff}
  .doc-btn.ghost{background:transparent;border-color:#3b82f6;color:#cfe1ff}
  .doc-btn:hover{filter:brightness(1.06)}

  /* TABS */
   .sw-wrap{background:#0f1726;border:1px solid #233047;border-radius:14px;box-shadow:0 6px 20px rgba(0,0,0,.18)}
  .sw-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;border-bottom:1px solid #233047}
  .sw-tabs{display:flex;gap:6px}
  .sw-tab{
    background:#121c2e;border:1px solid #233047;color:#cfe1ff;
    padding:8px 12px;border-radius:10px;cursor:pointer;font-weight:700
  }
  .sw-tab.active{background:#3b82f6;border-color:#3b82f6;color:#fff}
  .sw-actions{display:flex;gap:8px}
  .sw-btn{display:inline-flex;align-items:center;justify-content:center;padding:9px 14px;border-radius:10px;font-weight:700;text-decoration:none;border:1px solid transparent}
  .sw-btn.primary{background:#3b82f6;color:#fff}
  .sw-btn.ghost{background:transparent;border-color:#3b82f6;color:#cfe1ff}
  .sw-frame{width:100%;height:80vh;border:0;border-top:1px solid #233047;border-bottom-left-radius:14px;border-bottom-right-radius:14px;background:#0c1320}

  .foto-noticia {
  width: 300px !important;
  height: auto;
  display: block;
  margin: 0 auto;
}
  
.filter-menu {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.8rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.8rem 1rem;
  border-radius: 1rem;
  backdrop-filter: blur(6px);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.25);
}

.filter-btn {
  position: relative;
  padding: 0.5rem 1.2rem;
  border: none;
  border-radius: 2rem;
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.3px;
  cursor: pointer;
  color: #cdd9ff;
  background: rgba(255, 255, 255, 0.08);
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.filter-btn:hover {
  background: rgba(0, 119, 255, 0.3);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 0 8px rgba(0, 119, 255, 0.4);
}

.filter-btn.active {
  background: linear-gradient(135deg, #0077ff, #0099ff);
  color: #fff;
  box-shadow: 0 0 12px rgba(0, 136, 255, 0.6);
}

.filter-btn.active::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  pointer-events: none;
}




    /* filter-menu {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.8rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.8rem 1rem;
  border-radius: 1rem;
  backdrop-filter: blur(6px);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.25);
}

.filter-btn {
  position: relative;
  padding: 0.5rem 1.2rem;
  border: none;
  border-radius: 2rem;
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.3px;
  cursor: pointer;
  color: #cdd9ff;
  background: rgba(255, 255, 255, 0.08);
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.filter-btn:hover {
  background: rgba(0, 119, 255, 0.3);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 0 8px rgba(0, 119, 255, 0.4);
}

.filter-btn.active {
  background: linear-gradient(135deg, #0077ff, #0099ff);
  color: #fff;
  box-shadow: 0 0 12px rgba(0, 136, 255, 0.6);
}

.filter-btn.active::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  pointer-events: none;
} */