/* === Variables globales === */
:root {
  --primary: #4f46e5;
  --primary-light: #6366f1;
  --secondary: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --light: #f8fafc;
  --dark: #1e293b;
  --gray: #64748b;

  /* Perfil específico */
  --perfil-primary: #00a8ff;
  --perfil-primary-dark: #0088cc;
  --perfil-bg1: #e0f7fa;
  --perfil-bg2: #b2ebf2;
}

/* === General === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #1e3a8a, #3b82f6);
  color: var(--dark);
  min-height: 100vh;
  margin: 0;
  padding-top: 70px;
  display: flex;
  flex-direction: column;
}

/* === Fondo animado === */
.background-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://assets.codepen.io/21542/brain-academy-bg.png') center/cover;
  opacity: 0.1;
  z-index: -1;
  animation: float 15s infinite ease-in-out;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(-5px, -5px); }
  50% { transform: translate(5px, 5px); }
  75% { transform: translate(5px, -5px); }
}

/* === Navbar === */
.navbar {
  background-color: #ffffff !important;
  padding: 0.8rem 1.5rem;
  border-bottom: 2px solid #e5e7eb;
}

.navbar-brand img {
  max-height: 50px;
  width: auto;
}

.navbar .nav-link {
  font-weight: 500;
  color: var(--dark) !important;
  margin-left: 1rem;
  transition: color 0.3s ease;
}

.navbar .nav-link:hover {
  color: var(--primary) !important;
}

.navbar-toggler {
  border: none;
}
.navbar-toggler:focus {
  outline: none;
  box-shadow: none;
}

/* === Formularios (Login & Register) === */
.auth-container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-grow: 1;
}

.auth-box {
  background: #ffffff;
  padding: 2.5rem;
  border-radius: 1.5rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  max-width: 420px;
  width: 100%;
  animation: fadeIn 0.8s ease-in-out;
}

.auth-title {
  text-align: center;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--primary);
}

.form-control {
  border-radius: 0.8rem;
  padding: 0.9rem;
  border: 1px solid #e2e8f0;
  transition: all 0.3s ease;
}
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 8px rgba(79, 70, 229, 0.4);
}

.btn-primary {
  width: 100%;
  padding: 0.9rem;
  border-radius: 0.8rem;
  background: var(--primary);
  border: none;
  font-weight: 600;
  transition: all 0.3s ease;
  color: white;
}
.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

/* === Perfil === */
body.perfil-page {
  background: linear-gradient(120deg, var(--perfil-bg1), var(--perfil-bg2));
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.profile-card {
  background: #ffffff;
  border-radius: 25px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
  padding: 50px;
  max-width: 900px;
  margin: 60px auto;
  transition: transform 0.3s, box-shadow 0.3s;
}
.profile-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.profile-header {
  text-align: center;
  margin-bottom: 40px;
}
.profile-header h2 {
  margin-bottom: 10px;
  color: var(--perfil-primary);
  font-weight: 700;
  font-size: 2.2rem;
}
.profile-header p {
  color: #555;
  font-size: 1rem;
}

#skillsChart {
  background: radial-gradient(circle at center, rgba(0,168,255,0.05), transparent);
  border-radius: 15px;
  padding: 20px;
}

.btn-back {
  margin-top: 30px;
  transition: background 0.3s, transform 0.3s;
}
.btn-back:hover {
  background-color: var(--perfil-primary-dark);
  transform: translateY(-2px);
}

.comentarios-habilidades {
  margin-top: 30px;
  text-align: center;
  font-size: 1.1rem;
  color: #0277bd;
}
.comentarios-habilidades span {
  font-weight: 600;
}

.card-juego {
  border-left: 5px solid var(--perfil-primary);
  margin-bottom: 15px;
  transition: 0.3s;
}
.card-juego:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}