/* VARIABLES DE MARCA - M.A GLOBAL SYSTEMS */
:root {
  --primary: #00d2ff;    /* Azul Cian del logo */
  --secondary: #2ecc71;  /* Verde Esmeralda de éxito */
  --dark: #1a2a3a;       /* Fondo oscuro profesional */
  --bg: #f4f7f6;         /* Fondo de página suave */
  --white: #ffffff;
  --danger: #e74c3c;
}

/* Estilos generales */
body {
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  margin: 0;
  padding: 0;
  color: #333;
}

/* Header Profesional */
header {
  background: var(--dark);
  color: var(--white);
  padding: 10px 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  border-bottom: 3px solid var(--primary);
}

header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: auto;
  padding: 0 20px;
}

/* Navegación */
nav {
  display: flex;
  gap: 8px;
}

.nav-btn {
  background: transparent;
  border: none;
  color: #bdc3c7;
  padding: 10px 16px;
  cursor: pointer;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.nav-btn:hover {
  color: var(--white);
  background: rgba(255,255,255,0.1);
}

.nav-btn.active {
  background: var(--primary);
  color: var(--dark);
  box-shadow: 0 2px 8px rgba(0, 210, 255, 0.4);
}

/* Contenedor principal */
.wrap {
  max-width: 1200px;
  margin: 25px auto;
  padding: 0 20px;
}

/* Tarjetas M.A Global */
.card {
  background: var(--white);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  border: 1px solid #edf2f7;
}

.card h3 {
  margin-top: 0;
  color: var(--dark);
  border-bottom: 2px solid var(--bg);
  padding-bottom: 10px;
}

/* Botones Mejorados */
.btn {
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  transition: transform 0.2s, background 0.3s;
}

.btn:active { transform: scale(0.96); }

.btn-primary { background: var(--primary); color: var(--dark); }
.btn-primary:hover { background: #00b4db; }

.btn-success { background: var(--secondary); color: white; }
.btn-success:hover { background: #27ae60; }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #c0392b; }

.btn-warning { background: #f39c12; color: white; }

/* Tablas Modernas */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

table th {
  background: #f8fafc;
  color: #64748b;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 1px;
  padding: 15px;
  border-bottom: 2px solid #edf2f7;
}

table td {
  padding: 15px;
  border-bottom: 1px solid #f1f5f9;
}

/* Login Page con Identidad M.A Global */
body.login-page {
  background: radial-gradient(circle at top right, var(--dark), #0f172a);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-container {
  max-width: 380px;
  width: 90%;
  padding: 40px;
  background: var(--white);
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  text-align: center;
}

.login-container input {
  width: 100%;
  padding: 14px;
  margin: 12px 0;
  border: 2px solid #f1f5f9;
  border-radius: 10px;
  box-sizing: border-box;
  transition: 0.3s;
}

.login-container input:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 4px rgba(0, 210, 255, 0.1);
}

/* Secciones y Utilidades */
main section { display: none; }
main section.active { display: block; animation: fadeIn 0.5s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Footer */
footer {
  margin-top: 50px;
  border-top: 1px solid #e2e8f0;
}

/* Secciones */
main section {
  display: none;   /* todas ocultas por defecto */
}

main section.active {
  display: block;  /* solo la activa se muestra */
}