/* Paleta de colores principal */
:root {
  --rojo-oscuro: #8f1919;
  --rojo-medio: #000000;
  --negro: #181818;
  --negro-profundo: #000000;
  --blanco: #ffffff;
  --gris-claro: #e2e8f0;
  --amarillo: #ff0000;
  --amarillo-oscuro: #f50b0b;
  --gris-amarillo: #bf7c7c;
  --gris-medio: #94a3b8;
  --borde-suave: #3a3a3a;
  --guinda-claro: #c1121f;
  --gris-suave: #cccccc;
  --amarillo-hover: #e63946;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: all 0.3s ease;
}

body {
  font-family: 'Montserrat', sans-serif;
  background: linear-gradient(135deg, var(--rojo-medio) 0%, var(--rojo-oscuro) 100%);
  color: var(--gris-claro);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Navegación responsive mejorada */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(24, 24, 24, 0.95);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--gris-claro);
  font-size: 1.8rem;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  justify-content: center;
}

nav a {
  color: var(--gris-claro);
  text-decoration: none;
  font-weight: 600;
  border-radius: 25px;
  padding: 0.5rem 1.5rem;
  font-size: 1.05rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  background: none;
  margin: 0 0.25rem;
  letter-spacing: 0.5px;
}

nav a:before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.5s;
  z-index: 1;
}

nav a:hover:before {
  left: 100%;
}

nav a:hover {
  background: var(--amarillo-oscuro);
  color: var(--negro-profundo);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(251, 191, 36, 0.3);
}

@media (max-width: 1024px) {
  .nav-links {
    gap: 1rem;
  }
  nav a {
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
  }
}

@media (max-width: 900px) {
  .nav-links {
    gap: 0.7rem;
  }
  .menu-toggle {
    display: block;
  }
}

@media (max-width: 768px) {
  nav {
    padding: 0.8rem 1.5rem;
    flex-wrap: wrap;
  }
  .menu-toggle {
    display: block;
    order: 1;
  }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
    background: rgba(24, 24, 24, 0.98);
    position: absolute;
    left: 0;
    top: 100%;
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
    border-radius: 0 0 16px 16px;
    padding-bottom: 1rem;
    align-items: center;
  }
  .nav-links.active {
    display: flex !important;
    animation: slideDown 0.3s ease forwards;
  }
  .nav-links a {
    width: 90%;
    margin: 0.2rem 0;
    padding: 0.8rem 1.2rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    display: block;
  }
}

@media (max-width: 480px) {
  nav {
    padding: 0.6rem 1rem;
  }
  nav a {
    padding: 0.7rem 0.8rem;
    font-size: 0.9rem;
  }
  .menu-toggle {
    font-size: 1.5rem;
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Login container responsive */
.login-container {
  background: rgba(15, 15, 15, 0.85);
  border: 1px solid var(--borde-suave);
  backdrop-filter: blur(15px);
  border-radius: 16px;
  padding: 2rem;
  width: 90%;
  max-width: 400px;
  margin: 8rem auto 2rem;
  box-shadow: 0 0 30px rgba(255, 0, 50, 0.15);
  text-align: center;
  animation: fadeIn 1s ease;
}

.login-container h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 1.5rem;
  color: var(--amarillo);
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: 1px solid var(--guinda-claro);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-size: 0.95rem;
  transition: border 0.3s ease;
}

input[type="text"]:focus,
input[type="password"]:focus {
  border-color: var(--amarillo);
  outline: none;
}

input::placeholder {
  color: var(--gris-suave);
  font-size: 0.9rem;
}

button {
  width: 100%;
  padding: 12px;
  background: var(--amarillo);
  color: var(--negro-profundo);
  border: none;
  border-radius: 8px;
  font-weight: bold;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 0.5rem;
}

button:hover {
  background: var(--amarillo-hover);
  transform: translateY(-2px);
}

.error {
  color: #ff4d4f;
  margin-top: 0.8rem;
  display: none;
  font-size: 0.9rem;
}

.register-link {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: #bbb;
}

.register-link a {
  color: var(--guinda-claro);
  text-decoration: none;
  transition: color 0.3s;
}

.register-link a:hover {
  color: var(--amarillo);
}

/* Animaciones */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Media Queries para responsividad */
@media (max-width: 1024px) {
  nav a {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
  
  .login-container {
    margin: 7rem auto 2rem;
  }
}

@media (max-width: 768px) {
  nav {
    padding: 0.8rem 1.5rem;
    flex-wrap: wrap;
  }
  
  .menu-toggle {
    display: block;
    order: 1;
  }
  
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  nav a {
    width: 100%;
    margin: 0.2rem 0;
    padding: 0.8rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
  }
  
  .login-container {
    padding: 1.5rem;
    margin: 6rem auto 2rem;
  }
  
  input[type="text"],
  input[type="password"] {
    padding: 10px;
  }
  
  button {
    padding: 10px;
  }
}

@media (max-width: 480px) {
  nav {
    padding: 0.6rem 1rem;
  }
  
  nav a {
    padding: 0.7rem;
    font-size: 0.85rem;
  }
  
  .menu-toggle {
    font-size: 1.5rem;
  }
  
  .login-container {
    width: 95%;
    padding: 1.2rem;
    margin: 5rem auto 1.5rem;
  }
  
  .login-container h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }
  
  .register-link {
    font-size: 0.85rem;
  }
}

/* Efectos de scroll */
.parallax {
  transform: translateY(0);
  transition: transform 0.1s ease-out;
}