/* ============================================================================
   theme.css — Capa de refresco visual (tokens + refinamiento de componentes)
   Se carga DESPUÉS de Bootstrap 4.6 para que estos estilos tengan prioridad.
   No cambia el HTML de las plantillas: solo reestiliza clases ya existentes.
   ============================================================================ */

/* ── Tokens de diseño ─────────────────────────────────────────────────────── */
:root {
  /* Marca / acento */
  --brand:        #2563eb;   /* azul moderno (reemplaza el #007bff plano) */
  --brand-hover:  #1d4ed8;
  --brand-soft:   #eff4ff;
  --brand-ring:   rgba(37, 99, 235, .35);

  /* Estados */
  --success:  #16a34a;
  --success-hover: #15803d;
  --danger:   #dc2626;
  --danger-hover:  #b91c1c;
  --warning:  #d97706;
  --info:     #0891b2;

  /* Neutros (modo claro) */
  --bg:        #f1f5f9;   /* fondo del contenido */
  --surface:   #ffffff;   /* tarjetas, formularios */
  --surface-2: #f8fafc;
  --border:    #e2e8f0;
  --border-strong: #cbd5e1;
  --text:      #0f172a;
  --text-muted:#64748b;

  /* Sidebar */
  --side-bg-1: #1e293b;
  --side-bg-2: #0f172a;
  --side-text: #cbd5e1;
  --side-text-strong: #f8fafc;
  --side-hover: rgba(255,255,255,.07);

  /* Forma y profundidad */
  --radius:    10px;
  --radius-sm: 7px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.08);
  --shadow:    0 4px 12px rgba(15,23,42,.08);
  --shadow-lg: 0 12px 28px rgba(15,23,42,.12);

  /* Tipografía */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, "Noto Sans", sans-serif;
}

/* ── Base ─────────────────────────────────────────────────────────────────── */
body {
  font-family: var(--font);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
.content { background-color: var(--bg); }

h1, h2, h3, h4, h5, h6 { font-weight: 600; letter-spacing: 0; }
h1 { font-size: 1.7rem; margin-bottom: 1.25rem; }

a { color: var(--brand); }
a:hover { color: var(--brand-hover); }

/* Foco accesible visible en todo lo interactivo (Laws of UX: feedback) */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, .btn:focus-visible,
.page-link:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ── Sidebar ──────────────────────────────────────────────────────────────── */
.sidebar {
  background: linear-gradient(180deg, var(--side-bg-1) 0%, var(--side-bg-2) 100%);
  color: var(--side-text);
  box-shadow: 1px 0 0 rgba(0,0,0,.15);
  padding: 20px 16px;
}
.sidebar h2 {
  font-size: 1.25rem;
  letter-spacing: 0;
  margin-bottom: 26px;
  color: var(--side-text-strong);
}
.sidebar ul li a {
  color: var(--side-text);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  transition: background-color .15s ease, color .15s ease;
}
.sidebar ul li a:hover { background-color: var(--side-hover); color: #fff; }
.sidebar ul li a.active {
  background-color: var(--brand);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.sidebar ul li a i { width: 1.2em; text-align: center; margin-right: 6px; opacity: .9; }
.sidebar .nav-section-toggle { color: #94a3b8; font-size: 11px; }
.sidebar .nav-section-toggle:hover { background-color: var(--side-hover); color: #fff; }
.sidebar .nav-subgroup { border-left: 2px solid rgba(255,255,255,.10); }
.sidebar .nav-subgroup li a.active { background-color: var(--brand); }
.admin-menu > a { background-color: rgba(0,0,0,.25); }
.admin-menu > a:hover { background-color: var(--side-hover); }
.admin-menu ul { background-color: rgba(0,0,0,.18); }
.logout-button a {
  background-color: transparent;
  border: 1px solid rgba(248,113,113,.45);
  color: #fca5a5;
}
.logout-button a:hover { background-color: var(--danger); border-color: var(--danger); color: #fff; }

/* ── Botones (Bootstrap + clases propias) ─────────────────────────────────── */
.btn { border-radius: var(--radius-sm); font-weight: 500; transition: all .15s ease; }
.btn-primary,
.add-button, .edit-button, .add-user-button,
.app-form button[type="submit"],
.login-container button[type="submit"] {
  background-color: var(--brand);
  border-color: var(--brand);
  color: #fff;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  transition: all .15s ease;
}
.btn-primary:hover,
.add-button:hover, .edit-button:hover, .add-user-button:hover,
.app-form button[type="submit"]:hover,
.login-container button[type="submit"]:hover {
  background-color: var(--brand-hover);
  border-color: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.btn-success, .app-form-submit-button { background-color: var(--success); border-color: var(--success); }
.btn-success:hover, .app-form-submit-button:hover { background-color: var(--success-hover); border-color: var(--success-hover); }
.btn-danger, .remove-button { background-color: var(--danger); border-color: var(--danger); }
.btn-danger:hover, .remove-button:hover { background-color: var(--danger-hover); border-color: var(--danger-hover); }
.btn-primary:focus, .add-button:focus, .edit-button:focus {
  box-shadow: 0 0 0 3px var(--brand-ring);
}

/* ── Tablas ───────────────────────────────────────────────────────────────── */
/* Reemplaza el "border: 2px solid black" por bordes suaves y filas con hover */
table { border-collapse: collapse; margin-top: 1.25rem; }
table th, table td {
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 11px 14px;
  text-align: left;
  vertical-align: middle;
}
table thead th, table th {
  background-color: var(--surface-2);
  color: var(--text-muted);
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0;
  border-bottom: 2px solid var(--border-strong);
}
table tbody tr { transition: background-color .12s ease; }
table tbody tr:hover { background-color: var(--brand-soft); }

/* #4 — Dígitos tabulares: precios/stock/cantidades alineados para comparar */
table td, table th { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
.text-monospace { font-variant-numeric: tabular-nums; }

/* Tablas Bootstrap conservan su comportamiento pero con bordes suaves */
.table { color: var(--text); }
.table td, .table th { border-color: var(--border); }
.table thead th { border-bottom-width: 2px; border-color: var(--border-strong); }

/* Tarjeta envolvente sutil para tablas (mejora la jerarquía visual) */
.inventory-table-wrapper,
.table-responsive {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  /* Scroll horizontal cuando la tabla es más ancha que la pantalla (antes
     "overflow: hidden" recortaba las columnas sin dejar desplazarse). */
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
}

/* ── Acciones de fila en tablas (Fitts's Law: más área y separación) ──────── */
td .btn-group-sm > .btn,
td .btn-group-sm > form > .btn { padding: .32rem .56rem; }
/* Separa los iconos en vez de pegarlos, con esquinas propias */
td .btn-group > .btn,
td .btn-group > form > .btn { border-radius: var(--radius-sm) !important; }
td .btn-group > .btn:not(:first-child),
td .btn-group > form { margin-left: 5px; }
td .btn-group > form { display: inline-block; }
/* El menú ⋮ por encima de todo y legible */
.dropdown-menu { border: 1px solid var(--border); border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); z-index: 1050; }
.dropdown-item { padding: .5rem 1rem; }

/* ── Formularios ──────────────────────────────────────────────────────────── */
.app-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 28px;
  max-width: 540px;
}
.app-form label, .login-container label { color: var(--text); font-weight: 600; font-size: .9rem; }
.app-form input, .app-form select, .app-form textarea,
.login-container input,
.form-control {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.app-form input:focus, .app-form select:focus, .app-form textarea:focus,
.login-container input:focus,
.form-control:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-ring);
  outline: none;
}

/* ── Login ────────────────────────────────────────────────────────────────── */
body.login-page {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}
.login-container {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 38px 34px;
  border: 1px solid var(--border);
}
.login-container h1 { color: var(--text); font-size: 1.5rem; }

/* ── Tarjetas / Bootstrap cards ───────────────────────────────────────────── */
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.card-header { background-color: var(--surface-2); border-bottom: 1px solid var(--border); font-weight: 600; }

/* ── Mensajes flash / alertas ─────────────────────────────────────────────── */
.flash-message, .alert { border-radius: var(--radius-sm); border-width: 1px; }
.flash-success { background-color: #dcfce7; border-color: #86efac; color: #14532d; }
.flash-error   { background-color: #fee2e2; border-color: #fca5a5; color: #7f1d1d; }

/* #5 — Toasts: los mensajes flash flotan arriba-derecha y se autocierran */
#flash-stack {
  position: fixed;
  top: 1rem;
  right: 1rem;
  left: auto;
  width: auto;
  max-width: min(360px, calc(100vw - 2rem));
  margin: 0;
  padding: 0;
  z-index: 1080;
}
#flash-stack .alert {
  box-shadow: var(--shadow-lg);
  animation: flashIn .25s ease;
}
@keyframes flashIn { from { opacity: 0; transform: translateX(24px); } to { opacity: 1; transform: none; } }

/* #5 — Spinner de carga en botones */
.btn .fa-spinner { margin-right: .4rem; }
.btn.disabled { pointer-events: none; }

/* ── Paginación ───────────────────────────────────────────────────────────── */
.page-link { border-radius: var(--radius-sm); border-color: var(--border-strong); color: var(--brand); }
.page-link:hover, .page-link.active { background-color: var(--brand); border-color: var(--brand); color: #fff; }

/* ── Badges ───────────────────────────────────────────────────────────────── */
.badge { border-radius: 999px; font-weight: 600; padding: .35em .7em; }

/* ── Línea de tiempo ──────────────────────────────────────────────────────── */
.timeline { border-left: 2px solid var(--brand); }
.timeline-item::before { background-color: var(--brand); }

/* ── Títulos de sección (setup) ───────────────────────────────────────────── */
.section-title { color: var(--text); border-bottom: 2px solid var(--brand); }

/* ── Scrollbar discreta ───────────────────────────────────────────────────── */
.sidebar::-webkit-scrollbar { width: 8px; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,.12); border-radius: 8px; }
.content::-webkit-scrollbar { width: 10px; }
.content::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 8px; }

/* ============================================================================
   Dark mode — afina los tokens; el resto hereda automáticamente
   ============================================================================ */
body.dark-mode {
  --bg:        #0b1220;
  --surface:   #111a2e;
  --surface-2: #0f1830;
  --border:    #243049;
  --border-strong: #33415c;
  --text:      #e2e8f0;
  --text-muted:#94a3b8;
  --brand-soft: rgba(37,99,235,.12);
}
body.dark-mode .content { background-color: var(--bg); color: var(--text); }
body.dark-mode table th { background-color: var(--surface-2); color: var(--text-muted); }
body.dark-mode table tbody tr:hover { background-color: rgba(37,99,235,.10); }
body.dark-mode .card,
body.dark-mode .app-form,
body.dark-mode .login-container,
body.dark-mode .inventory-table-wrapper,
body.dark-mode .table-responsive { background-color: var(--surface); border-color: var(--border); }
body.dark-mode .card-header { background-color: var(--surface-2); }
body.dark-mode .form-control { background-color: var(--surface-2); border-color: var(--border-strong); color: var(--text); }