/* ====== CORPORATE & MODERN LOGIN STYLES ====== */
:root {
  --primary-color: #1a2746; /* Azul corporativo oscuro */
  --primary-light: #2d3e5e;
  --accent-color: #e0b646; /* Dorado elegante */
  --background-color: #f6f8fa; /* Fondo gris muy claro */
  --surface-color: #fff;
  --text-color: #232b3b;
  --text-light: #6c7a92;
  --border-radius: 12px;
  --border-radius-card: 14px;
  --border-radius-button: 8px;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.03);
  --transition-speed: 0.3s;
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Lato', sans-serif;
  

}

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

body {
  font-family: var(--font-body);
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ====== HEADER CONSISTENTE Y BALANCEADO ====== */
header {
  background-color: var(--primary-color);
  box-shadow: 0 2px 12px rgba(26,39,70,0.07);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  padding: 1rem 0; /* Añadido para dar espacio vertical */
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.5rem; /* Ajustado para padding horizontal */
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  height: 120px; /* AJUSTADO: Tamaño más balanceado */
  width: auto;
  filter: brightness(0) invert(1);
  transition: transform var(--transition-speed) ease;
}

.logo:hover {
  transform: scale(1.05);
}

nav ul {
  display: flex;
  list-style-type: none;
}
nav ul li { margin-left: 1.5rem; }
nav ul li a {
  text-decoration: none;
  color: #fff;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  transition: all 0.3s ease;
}
nav ul li a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -2px;
  left: 0;
  background-color: var(--accent-color);
  transition: width var(--transition-speed) ease-in-out;
}
nav ul li a:hover {
  background-color: var(--accent-color);
  color: #fff;
}
nav ul li a:hover::after {
  width: 100%;
}
nav ul li a.active {
  color: var(--accent-color);
  font-weight: 700;
}
nav ul li a.active::after {
  width: 100%;
}


/* ====== MAIN CONTENT & LOGIN FORM ====== */
main {
  margin-top: 120px; /* Espacio para el header fijo */
  padding: 2rem;
  max-width: 450px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  flex: 1;
}

.login-form {
  background-color: var(--surface-color);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  border-top: 4px solid var(--accent-color); /* Toque de marca premium */
}

.login-form:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(26,39,70,0.1);
}

h1 {
  color: var(--primary-color);
  margin-bottom: 2rem;
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
}

form {
  display: flex;
  flex-direction: column;
}

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-light);
  transition: color var(--transition-speed) ease;
}

input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--input-border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: var(--font-body);
  color: var(--text-color);
  background-color: var(--background-color);
  transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

input[type="email"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--accent-color);
  background-color: white;
  box-shadow: 0 0 0 3px rgba(224,182,70,0.15);
}

.form-group:focus-within label {
  color: var(--primary-color);
}

button {
  background-color: var(--primary-light);
  color: #fff;
  border: none;
  padding: 0.9rem;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  font-family: var(--font-heading);
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  box-shadow: 0 4px 15px rgba(26,39,70,0.15);
  margin-top: 1rem;
  letter-spacing: 0.5px;
}

button:hover {
  background-color: var(--primary-light);
  box-shadow: 0 6px 20px rgba(45,62,94, 0.25);
  transform: translateY(-3px);
}

button:active {
  transform: translateY(0);
  box-shadow: 0 2px 5px rgba(26,39,70, 0.2);
}

.forgot-password {
  text-align: right;
  margin-top: 1rem;
}

.forgot-password a {
  color: var(--primary-light);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-speed) ease;
}

.forgot-password a:hover {
  color: var(--accent-color);
  text-decoration: underline;
}

/* ====== SOCIAL LOGIN & OTHERS ====== */
.social-login { margin-top: 2rem; text-align: center; }
.social-login h3 {
  margin-bottom: 1rem;
  color: var(--text-light);
  font-weight: 500;
  position: relative;
  font-size: 0.9rem;
}
.social-login h3::before, .social-login h3::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 25%; /* Ajustado */
  height: 1px;
  background-color: var(--input-border);
}
.social-login h3::before { left: 10%; }
.social-login h3::after { right: 10%; }

.social-buttons { display: flex; justify-content: center; gap: 1.5rem; margin: 1.5rem 0; }
.social-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--surface-color);
  border: 1px solid var(--input-border);
  cursor: pointer;
  transition: all var(--transition-speed) ease;
}
.social-button:hover {
  transform: translateY(-4px);
  border-color: var(--accent-color);
  box-shadow: 0 4px 10px rgba(224,182,70,0.2);
}
.social-icon { width: 24px; height: 24px; }

.register-link {
  text-align: center;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--input-border);
}
.register-link a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-speed) ease;
}
.register-link a:hover {
  color: var(--accent-color);
  text-decoration: underline;
}

/* ====== FOOTER CONSISTENTE ====== */
footer {
  background-color: var(--primary-color);
  color: rgba(255,255,255,0.8);
  text-align: center;
  padding: 1.5rem;
  margin-top: auto;
}

/* ====== MENSAJES DE ESTADO Y ANIMACIONES ====== */
#mensajeError {
  padding: 0.8rem 1rem;
  color: #a94442;
  background-color: #f2dede;
  border: 1px solid #ebccd1;
  border-radius: 8px;
  margin: 1rem 0 0 0;
  text-align: center;
  font-weight: 500;
  display: none;
  animation: fadeIn 0.3s ease;
}

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

@keyframes shake {
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(2px); }
  30%, 50%, 70% { transform: translateX(-4px); }
  40%, 60% { transform: translateX(4px); }
}
.shake { animation: shake 0.82s cubic-bezier(.36,.07,.19,.97) both; }

.loader {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s ease-in-out infinite;
  vertical-align: middle;
  margin-right: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

button.loading { background-color: var(--primary-light); cursor: wait; }
button.success {
  background-color: var(--success-color);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
button.success:hover {
  background-color: #4a9f4d;
  box-shadow: 0 6px 20px rgba(92,184,92, 0.25);
}

/* ====== RESPONSIVE DESIGN ====== */
@media (max-width: 768px) {
  .header-content { flex-direction: column; padding: 1rem; }
  nav ul { justify-content: center; margin-top: 1rem; }
  nav ul li { margin: 0.3rem 0.5rem; }
  main { margin-top: 150px; /* Ajuste para header más alto en móvil */ padding: 1.5rem 1rem; }
  .login-form { padding: 2rem 1.5rem; }
}