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

html, body {
    height: 100%;
}

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

.contact-section {
    flex: 1; /* Esto empuja el footer hacia abajo si hay poco contenido */
}
:root{
        --dark-bg: #121212;
        --light-text: #f5f5f5;
        --border-color: #2d2d2d;
        --black-bg: black;
        --darker-bg: #0a0a0a;
        --clean-color: #fff;
}
body{
    font-family:Arial, Helvetica, sans-serif;
    line-height: 1.6;
    color: var(--dark-bg);
    background: whitesmoke;
}
.contact-section{
    background-color: #000;
  color: #fff;
  padding: 3rem 1rem;
  text-align: center;
}
.contact-section h2{
    margin-bottom: 1.5rem;
    font-size: 2rem;
}
#contact-form{
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 600px;
    margin: auto;
}
#contact-form input, #contact-form textarea {
    width: 100%;
    padding: 0.85rem 1.2rem; /* Un poco más de aire */
    border: 1px solid #333; 
    border-radius: 8px;
    background-color: #1a1a1a; /* Un gris oscuro en lugar de blanco */
    color: #fff; /* Texto blanco para que contraste con el fondo oscuro */
    font-size: 1rem;
    transition: all 0.3s ease;
}

#contact-form input::placeholder, #contact-form textarea::placeholder {
    color: #888;
}

#contact-form input:focus, #contact-form textarea:focus {
  outline: none;
  border: 1px solid #00d4ff;
  box-shadow: 0 0 5px rgba(0, 212, 255, 0.6);
}

/* Validación visual */
#contact-form input:valid:not(:placeholder-shown), 
#contact-form textarea:valid:not(:placeholder-shown) {
    border: 1px solid #28a745;
}
#contact-form input:invalid:not(:placeholder-shown), 
#contact-form textarea:invalid:not(:placeholder-shown) {
    border: 1px solid #dc3545;
}

#contact-form button {
    background: linear-gradient(90deg, #001f3f, #007bff); /* Match con el footer */
    color: #fff;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    margin-top: 10px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#contact-form button:hover {
    transform: translateY(-2px); /* Efecto de levante */
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.4);
}
#contact-form button.loading{
    background-color: var(--clean-color);
    cursor: not-allowed;
    position: relative;
}
#contact-form button.loading::after{
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 3px solid var(--border-color);
    border-top: 3px solid transparent;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}
@keyframes spin{
    0%{
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100%{
        transform: translate(-50%, -50%) rotate(365deg);
    }
}
.flash-messages{
    position: fixed;
    top: 10px;
    right: 10px;
    z-index: 1000;
    width: auto;
}
.alert {
    padding: 10px 20px;
    border-radius: 5px;
    margin-bottom: 10px;
    color: var(--light-text);
    font-size: 14px;
    animation: fade-in-out 5s forwards;
}
.alert.success{
    background-color: #4caf4c;
}
.alert.danger{
    background-color: #f44336;
}
@keyframes fade-in-out {
    0% {opacity: 1;}
    80% {opacity: 1;}
    100% {opacity: 0;}
}
footer {
  background: linear-gradient(90deg, #001f3f, #007bff);
  color: #fff;
  padding: 1rem 2rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap; /* para móviles */
}

#social-links a {
  margin-left: 1rem;
  color: #fff;
  transition: color 0.3s;
}

#social-links a:hover {
  color: #00d4ff;
}

/* Responsividad */
@media (max-width: 768px) {
  #contact-form {
    padding: 0 1rem;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  #social-links a {
    margin: 0 0.5rem;
  }
}