* { box-sizing: border-box; margin: 0; padding: 0; font-family: system-ui, sans-serif; }
body { background: #f0f4f8; }

.pantalla { display: none; }
.pantalla.activa { display: flex; }
.oculto { display: none !important; }

/* LOGIN */
#pantalla-login {
  min-height: 100vh;
  background: linear-gradient(135deg, #2E5FAC, #4472C4);
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-wrap { display: flex; flex-direction: column; align-items: center; gap: 2rem; width: 100%; max-width: 420px; }

.login-logo { text-align: center; color: white; }
.logo-icon { width: 70px; height: 70px; background: white; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 2rem; font-weight: 700; color: #2E5FAC; margin: 0 auto 1rem; }
.login-logo h1 { font-size: 1.5rem; margin-bottom: 0.25rem; }
.login-logo p { font-size: 0.9rem; opacity: 0.85; }

.login-card { background: white; border-radius: 16px; padding: 2rem; width: 100%; box-shadow: 0 8px 32px rgba(0,0,0,0.15); }
.login-card h2 { font-size: 1.2rem; color: #333; margin-bottom: 1.5rem; }

/* PANEL PRINCIPAL */
#pantalla-panel { min-height: 100vh; }

/* SIDEBAR */
.sidebar {
  width: 240px; min-height: 100vh; background: #1e3a6e;
  display: flex; flex-direction: column;
  position: fixed; left: 0; top: 0; bottom: 0;
  z-index: 100;
}

.sidebar-logo {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 1.25rem 1rem; border-bottom: 1px solid rgba(255,255,255,0.1);
}
.logo-icon-sm { width: 32px; height: 32px; background: white; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 1rem; font-weight: 700; color: #2E5FAC; }
.sidebar-logo span { color: white; font-weight: 600; font-size: 1rem; }

.sidebar-nav { flex: 1; padding: 1rem 0; }
.nav-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem 1rem; color: rgba(255,255,255,0.7);
  text-decoration: none; font-size: 0.9rem;
  transition: all 0.15s; border-left: 3px solid transparent;
}
.nav-item:hover { background: rgba(255,255,255,0.1); color: white; }
.nav-item.activo { background: rgba(255,255,255,0.15); color: white; border-left-color: #4472C4; font-weight: 500; }
.nav-icon { font-size: 1rem; }

.sidebar-footer { padding: 1rem; border-top: 1px solid rgba(255,255,255,0.1); }
.user-info { margin-bottom: 0.75rem; }
.user-info div:first-child { color: white; font-size: 0.85rem; font-weight: 500; }
.user-info div:last-child { color: rgba(255,255,255,0.6); font-size: 0.75rem; }
.btn-logout { width: 100%; padding: 0.5rem; background: rgba(255,255,255,0.1); color: white; border: 1px solid rgba(255,255,255,0.2); border-radius: 8px; cursor: pointer; font-size: 0.85rem; }
.btn-logout:hover { background: rgba(255,255,255,0.2); }

/* MAIN CONTENT */
.main-content { margin-left: 240px; padding: 2rem; min-height: 100vh; width: calc(100% - 240px); }

.seccion { display: none; }
.seccion.activa { display: block; }

.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.page-header h1 { font-size: 1.5rem; color: #1e3a6e; }
.page-header p { font-size: 0.85rem; color: #666; }

/* KPIs */
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.kpi-card { background: white; border-radius: 12px; padding: 1.25rem; box-shadow: 0 2px 8px rgba(0,0,0,0.06); border-top: 3px solid #2E5FAC; }
.kpi-num { font-size: 2rem; font-weight: 700; color: #2E5FAC; }
.kpi-label { font-size: 0.8rem; color: #888; margin-top: 0.25rem; }

/* CARDS */
.section-card { background: white; border-radius: 12px; padding: 1.5rem; box-shadow: 0 2px 8px rgba(0,0,0,0.06); margin-bottom: 1.5rem; }
.section-card h2 { font-size: 1rem; color: #333; margin-bottom: 1rem; font-weight: 600; }

/* FORMS */
.field { margin-bottom: 1rem; }
.field label { display: block; font-size: 0.85rem; color: #555; margin-bottom: 0.4rem; font-weight: 500; }
.field input, .field select, .field textarea {
  width: 100%; padding: 0.65rem 0.9rem;
  border: 1.5px solid #ddd; border-radius: 8px;
  font-size: 0.9rem; outline: none; transition: border-color 0.2s;
  background: white;
}
.field input:focus, .field select:focus { border-color: #2E5FAC; }

.checkbox-group { display: flex; gap: 1.5rem; }
.checkbox-group label { display: flex; align-items: center; gap: 0.4rem; font-size: 0.9rem; color: #444; cursor: pointer; }

/* BUTTONS */
.btn-primary { padding: 0.65rem 1.25rem; background: #2E5FAC; color: white; border: none; border-radius: 8px; font-size: 0.9rem; font-weight: 500; cursor: pointer; transition: background 0.2s; }
.btn-primary:hover { background: #1d4a8f; }
.btn-primary:disabled { background: #aaa; cursor: not-allowed; }
.btn-secondary { padding: 0.65rem 1.25rem; background: white; color: #2E5FAC; border: 1.5px solid #2E5FAC; border-radius: 8px; font-size: 0.9rem; font-weight: 500; cursor: pointer; }
.btn-danger { padding: 0.5rem 1rem; background: #fef2f2; color: #c0392b; border: 1px solid #f5c6c6; border-radius: 8px; font-size: 0.85rem; cursor: pointer; }
.btn-success { padding: 0.5rem 1rem; background: #f0fdf4; color: #15803d; border: 1px solid #bbf7d0; border-radius: 8px; font-size: 0.85rem; cursor: pointer; }

/* TABLAS */
.tabla-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th { background: #f8fafc; color: #555; font-weight: 500; padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid #e5e7eb; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; }
td { padding: 0.75rem 1rem; border-bottom: 1px solid #f1f5f9; color: #333; }
tr:hover td { background: #f8fafc; }

/* BADGES */
.badge { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 20px; font-size: 0.75rem; font-weight: 500; }
.badge-activo { background: #f0fdf4; color: #15803d; }
.badge-borrador { background: #f8fafc; color: #64748b; }
.badge-cerrado { background: #fef2f2; color: #c0392b; }
.badge-qr { background: #eff6ff; color: #2563eb; }

/* UPLOAD */
.upload-area {
  border: 2px dashed #cbd5e1; border-radius: 12px;
  padding: 2rem; text-align: center; cursor: pointer;
  transition: border-color 0.2s; margin-bottom: 1rem;
}
.upload-area:hover { border-color: #2E5FAC; }
.upload-area.dragover { border-color: #2E5FAC; background: #eff6ff; }
.upload-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.upload-area p { color: #64748b; font-size: 0.9rem; }

.texto-ayuda { font-size: 0.8rem; color: #888; margin-bottom: 1rem; line-height: 1.5; }

/* SEARCH */
.search-row { margin-bottom: 1rem; }
.search-row input { max-width: 320px; }

/* MODAL */
.modal { position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center; }
.modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.5); }
.modal-card { position: relative; background: white; border-radius: 16px; width: 100%; max-width: 520px; box-shadow: 0 20px 60px rgba(0,0,0,0.2); }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 1.25rem 1.5rem; border-bottom: 1px solid #e5e7eb; }
.modal-header h2 { font-size: 1.1rem; color: #333; }
.btn-cerrar-modal { background: none; border: none; font-size: 1.2rem; cursor: pointer; color: #888; padding: 0.25rem; }
.modal-body { padding: 1.5rem; }
.modal-footer { display: flex; justify-content: flex-end; gap: 0.75rem; padding: 1rem 1.5rem; border-top: 1px solid #e5e7eb; }

/* EVENTO CARDS */
.evento-panel-card { border: 1px solid #e5e7eb; border-radius: 10px; padding: 1rem 1.25rem; margin-bottom: 0.75rem; display: flex; align-items: center; gap: 1rem; }
.evento-panel-card:hover { background: #f8fafc; }
.evento-panel-info { flex: 1; }
.evento-panel-info h3 { font-size: 0.95rem; color: #222; margin-bottom: 0.25rem; }
.evento-panel-info p { font-size: 0.8rem; color: #888; }
.evento-panel-actions { display: flex; gap: 0.5rem; }

/* MENSAJES */
.mensaje-error { padding: 0.75rem; background: #fef2f2; color: #c0392b; border-radius: 8px; font-size: 0.875rem; margin-top: 0.75rem; }
.mensaje-ok { padding: 0.75rem; background: #f0fdf4; color: #15803d; border-radius: 8px; font-size: 0.875rem; margin-top: 0.75rem; }
.cargando { text-align: center; color: #888; padding: 2rem; }