/* =============================================================================
   Liburuak — Identidad corporativa La Mennais
   ============================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800&family=Nunito+Sans:wght@400;500;600&display=swap');

:root {
  /* ── Paleta corporativa La Mennais ── */
  --corp-blue:      #005ca9;   /* azul texto logo */
  --corp-blue-dk:   #004a8a;   /* hover/activo */
  --corp-teal:      #02a8be;   /* espiga turquesa */
  --corp-teal-dk:   #0189a0;
  --corp-yellow:    #fab319;
  --corp-red:       #e72142;
  --corp-green:     #2d9e47;

  /* ── Alias de sistema ── */
  --primary:    var(--corp-blue);
  --primary-dk: var(--corp-blue-dk);
  --success:    var(--corp-green);
  --danger:     var(--corp-red);
  --warning:    var(--corp-yellow);

  /* ── Grises ── */
  --gray-50:    #f8fafc;
  --gray-100:   #f1f5f9;
  --gray-200:   #e2e8f0;
  --gray-400:   #94a3b8;
  --gray-600:   #475569;
  --gray-800:   #1e293b;

  /* ── Misc ── */
  --radius:     8px;
  --shadow:     0 1px 3px rgba(0,0,0,.10), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:  0 4px 6px -1px rgba(0,0,0,.08), 0 2px 4px -1px rgba(0,0,0,.05);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Nunito Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 15px;
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

/* ── Header ── */
.app-header {
  background: #fff;
  border-bottom: 3px solid var(--corp-teal);
  box-shadow: 0 2px 8px rgba(0,92,169,.10);
  position: sticky; top: 0; z-index: 100;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: 1rem;
}
.app-logo {
  display: flex; align-items: center; gap: .75rem;
  text-decoration: none; flex-shrink: 0;
}
.app-logo img {
  height: 44px; width: auto; object-fit: contain;
}
.app-logo-text {
  display: flex; flex-direction: column; line-height: 1.1;
}
.app-logo-name {
  font-family: 'Nunito', sans-serif;
  font-size: 1.05rem; font-weight: 800;
  color: var(--corp-blue); letter-spacing: -.01em;
}
.app-logo-sub {
  font-size: .7rem; font-weight: 600; color: var(--corp-teal);
  text-transform: uppercase; letter-spacing: .08em;
}
.app-logo:hover { text-decoration: none; }

.curso-badge {
  font-size: .72rem; font-weight: 700;
  background: linear-gradient(135deg, var(--corp-blue), var(--corp-teal));
  color: #fff; border-radius: 20px; padding: 3px 11px;
  letter-spacing: .02em;
}
.header-nav { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; }
.header-nav a {
  color: var(--gray-600); font-size: .88rem; font-weight: 600;
  padding: .25rem 0; border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}
.header-nav a:hover {
  color: var(--corp-blue); border-color: var(--corp-teal);
  text-decoration: none;
}
.btn-logout {
  background: var(--gray-100); border: 1px solid var(--gray-200);
  padding: .3rem 1rem; border-radius: 20px;
  font-size: .82rem !important; font-weight: 600 !important;
  color: var(--gray-600) !important; border-bottom: 1px solid var(--gray-200) !important;
  transition: background .15s !important;
}
.btn-logout:hover { background: var(--gray-200) !important; }

/* ── Main ── */
main.container { padding-top: 2rem; padding-bottom: 3rem; }

/* ── Cards ── */
.card {
  background: #fff; border: 1px solid var(--gray-200);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 1.5rem; margin-bottom: 1.5rem;
}
.card.highlighted {
  border-color: var(--corp-blue); border-width: 2px;
  border-top: 3px solid var(--corp-teal);
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem; flex-wrap: wrap; gap: .5rem;
}
.card h3 {
  font-family: 'Nunito', sans-serif;
  font-size: 1rem; font-weight: 700; color: var(--gray-800); margin-bottom: 1rem;
}

/* ── Alerts ── */
.alert {
  padding: .85rem 1.1rem; border-radius: var(--radius);
  margin-bottom: 1rem; font-size: .9rem;
}
.alert-ok      { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error   { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-warning { background: #fef9c3; color: #92400e; border: 1px solid #fde68a; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .5rem 1.1rem; border-radius: var(--radius);
  font-size: .9rem; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; text-decoration: none;
  transition: all .15s; font-family: inherit;
}
.btn:hover { opacity: .88; text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary   { background: var(--corp-blue);   color: #fff; }
.btn-primary:hover { background: var(--corp-blue-dk); opacity:1; }
.btn-success   { background: var(--corp-green);  color: #fff; }
.btn-danger    { background: var(--corp-red);     color: #fff; }
.btn-secondary { background: var(--gray-100); color: var(--gray-800); border-color: var(--gray-200); }
.btn-outline   { background: #fff; color: var(--corp-blue); border-color: var(--corp-blue); }
.btn-block     { width: 100%; justify-content: center; }
.btn-sm        { padding: .28rem .7rem; font-size: .8rem; }
.btn-group     { display: flex; flex-wrap: wrap; gap: .75rem; }

/* ── Forms ── */
.field { display: flex; flex-direction: column; gap: .35rem; margin-bottom: 1rem; }
.field label { font-size: .88rem; font-weight: 600; color: var(--gray-600); }
input[type=text], input[type=email], input[type=password],
input[type=date], input[type=search], select, textarea {
  padding: .55rem .85rem; border: 1px solid var(--gray-200);
  border-radius: var(--radius); font-size: .95rem;
  width: 100%; background: #fff; transition: border-color .15s;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--corp-teal);
  box-shadow: 0 0 0 3px rgba(2,168,190,.18);
}
.field-row { display: flex; align-items: flex-end; gap: 1rem; flex-wrap: wrap; }
.field-row .field { flex: 1; min-width: 150px; margin-bottom: 0; }
.inline-form { display: flex; flex-direction: column; }
.hint { font-size: .85rem; color: var(--gray-400); margin-bottom: .75rem; }

/* ── Tables ── */
.data-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.data-table thead tr { border-bottom: 2px solid var(--corp-teal); }
.data-table th {
  padding: .6rem .9rem; text-align: left;
  font-weight: 700; color: var(--corp-blue);
  font-size: .82rem; text-transform: uppercase; letter-spacing: .04em;
}
.data-table td { padding: .6rem .9rem; border-bottom: 1px solid var(--gray-100); }
.data-table tbody tr:hover { background: #f0f9ff; }
.data-table tr.row-active { background: #e0f2fe; }
.search-input { width: 220px; }

/* ── Badges ── */
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 20px;
  font-size: .75rem; font-weight: 700; letter-spacing: .02em;
}
.badge-active { background: #dbeafe; color: var(--corp-blue); }
.badge-open   { background: #dcfce7; color: #166534; }
.badge-closed { background: #fee2e2; color: #991b1b; }

/* ── Stats row ── */
.stats-row { display: flex; gap: 2rem; flex-wrap: wrap; margin: 1rem 0; }
.stat { text-align: center; }
.stat span {
  display: block; font-size: 2rem; font-weight: 800;
  font-family: 'Nunito', sans-serif;
  color: var(--corp-blue);
}
.stat label {
  font-size: .75rem; font-weight: 700; color: var(--gray-400);
  text-transform: uppercase; letter-spacing: .06em;
}
.card-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1rem; }

/* ── Page header ── */
.page-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem; margin-bottom: 1.5rem;
}
.page-header h2 {
  font-family: 'Nunito', sans-serif;
  font-size: 1.5rem; font-weight: 800; color: var(--corp-blue);
}
.subtitle { color: var(--gray-600); font-size: .9rem; margin-top: .25rem; }

/* ── Tipo filter chips ── */
.tipo-filter { display: flex; gap: .5rem; flex-wrap: wrap; }
.chip {
  padding: .3rem .85rem; border-radius: 20px; font-size: .85rem; font-weight: 600;
  background: var(--gray-100); color: var(--gray-600); border: 1.5px solid var(--gray-200);
  cursor: pointer; text-decoration: none; transition: all .15s;
}
.chip:hover { background: var(--gray-200); text-decoration: none; }
.chip.active { background: var(--corp-blue); color: #fff; border-color: var(--corp-blue); }

/* ── Libros grid (reservas) ── */
.materia-section { margin-bottom: 1.5rem; }
.materia-section h3 {
  font-size: .82rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em;
  color: var(--corp-teal); border-bottom: 2px solid var(--corp-teal);
  padding-bottom: .4rem; margin-bottom: .75rem;
}
.libros-grid { display: grid; gap: .6rem; }
.libro-card {
  display: flex; align-items: flex-start; gap: 1rem; padding: .85rem 1rem;
  background: #fff; border: 1.5px solid var(--gray-200);
  border-radius: var(--radius); cursor: pointer;
  transition: border-color .15s, background .15s, box-shadow .15s;
}
.libro-card:hover { border-color: var(--corp-teal); box-shadow: 0 2px 8px rgba(2,168,190,.12); }
.libro-card.checked { border-color: var(--corp-blue); background: #f0f7ff; }
.libro-card.locked { opacity: .7; cursor: default; }
.libro-card input[type=checkbox] { margin-top: .2rem; width: 18px; height: 18px; cursor: pointer; accent-color: var(--corp-blue); }
.libro-info { flex: 1; display: flex; flex-direction: column; gap: .2rem; }
.libro-tipo { font-size: .72rem; font-weight: 700; color: var(--corp-teal); text-transform: uppercase; letter-spacing: .05em; }
.libro-titulo { font-size: .95rem; font-weight: 700; }
.libro-editorial { font-size: .82rem; color: var(--gray-600); }
.libro-isbn { font-size: .78rem; color: var(--gray-400); font-family: monospace; }
.libro-precio { font-size: 1rem; font-weight: 700; white-space: nowrap; color: var(--gray-800); }
.form-actions {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem; padding: 1rem;
  background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius);
  position: sticky; bottom: 1rem; box-shadow: var(--shadow-md);
  margin-top: 1rem;
}
.precio-total { font-size: 1.1rem; color: var(--gray-600); }
.precio-total strong { color: var(--corp-blue); font-size: 1.3rem; }
.empty-state { text-align: center; color: var(--gray-400); padding: 3rem; }

/* ── Login page ── */
.login-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #eef6fb 0%, #f0faf9 50%, #f8fafc 100%);
}
.login-card {
  background: #fff; border-radius: 12px; box-shadow: var(--shadow-md);
  padding: 2.5rem; width: 100%; max-width: 400px;
  border-top: 4px solid var(--corp-teal);
}
.login-logo {
  text-align: center; margin-bottom: 2rem;
}
.login-logo img {
  height: 80px; width: auto; object-fit: contain; margin-bottom: .75rem;
}
.login-logo h1 {
  font-family: 'Nunito', sans-serif;
  font-size: 1.5rem; font-weight: 800; color: var(--corp-blue);
}
.login-logo p { color: var(--gray-400); font-size: .9rem; }

/* ── CE selector ── */
.ce-selector { width: auto; min-width: 160px; }

/* ── Footer ── */
.app-footer {
  border-top: 1px solid var(--gray-200); padding: 1rem 0;
  text-align: center; font-size: .82rem; color: var(--gray-400);
  margin-top: 3rem;
}
.app-footer strong { color: var(--corp-teal); }

/* ── Responsive ── */
@media (max-width: 640px) {
  .header-nav { gap: .75rem; }
  .stats-row  { gap: 1rem; }
  .field-row  { flex-direction: column; }
  .form-actions { flex-direction: column; }
  .app-logo-text { display: none; }
}