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

html, body {
    width: 100%;
    height: 100vh; /* Fuerza a ocupar el 100% de la ventana del monitor */
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    
    /* SISTEMA INFALIBLE DE CENTRADO (CSS GRID) */
    display: grid;
    place-content: center; /* Centra horizontal y verticalmente en cualquier pantalla */
    align-items: center;
    justify-content: center;
    padding: 20px;
}

form {
    width: 100%;
    max-width: 400px;
    min-width: 320px; /* Evita que se encoja de más */
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin: 0 auto; /* Centrado de respaldo */
    text-align: center;
}

h2 {
    color: #333;
    margin-bottom: 5px;
}

.buscador {
    display: flex;
    gap: 10px;
    width: 100%;
}

input {
    flex: 1;
    padding: 10px;
    border: 2px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    transition: all 0.3s ease;
}

input:focus {
    border-color: blueviolet;
    box-shadow: 0 0 8px rgba(138, 43, 226, 0.4);
}

button {
    font-size: 1.00em;
    font-weight: bold;
    padding: 10px 15px;
    border-radius: 5px;
    border: 2px solid rgba(0,0,0,0.3);
    box-shadow: 2px 2px 10px rgba(0,0,0,0.5);
    color: white;
    background-color: blueviolet;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

button:hover {
    background-color: #0056b3;
}

button:active {
    transform: scale(0.98);
}

#resultado {
    display: none; 
    width: 100%;
    max-width: 350px;
    padding: 25px;          
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    flex-direction: column; 
    align-items: center; 
    margin: 20px auto 0 auto; 
    box-sizing: border-box;   
    transition: all 0.4s ease; /* Transición suave para cambios de color */
    animation: fadeIn 0.5s ease-out; /* Animación de aparición */
}

#resultado p, #resultado h3 {
    text-align: center;
    margin: 5px 0;
}

.error {
    color: #dc3545;
    font-weight: bold;
}
input.is-invalid {
    border-color: #dc3545 !important;
    box-shadow: 0 0 8px rgba(220, 53, 69, 0.4) !important;
}

.clima-soleado {
    background: linear-gradient(135deg, #fef9e7 0%, #fdeca6 100%);
    border: 2px solid #f9d74c;
    color: #7d6608;
}

.clima-lluvioso {
    background: linear-gradient(135deg, #ebf5fb 0%, #aed6f1 100%);
    border: 2px solid #5dade2;
    color: #1b4f72;
}

.clima-nublado {
    background: linear-gradient(135deg, #f2f3f4 0%, #d5dbdb 100%);
    border: 2px solid #bdc3c7;
    color: #4d5656;
}

.clima-despejado {
    background: linear-gradient(135deg, #f4f6f7 0%, #d6eaf8 100%);
    border: 2px solid #85c1e9;
    color: #21618c;
}

.clima-neutro {
    background: rgba(99, 154, 206, 0.2);
    border: 2px solid rgba(99, 154, 206, 0.4);
    color: #333;
}

/* ==========================================================================
   Estilos de los Elementos Internos Dinámicos
   ========================================================================== */
.icono-clima {
    font-size: 3rem;
    margin-bottom: 5px;
}

#resultado h3 {
    margin: 0;
    font-size: 1.4rem;
    text-transform: capitalize;
}

.temp-principal {
    font-size: 2.8rem;
    font-weight: bold;
    margin: 10px 0;
}

.detalles-clima {
    width: 100%;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: 10px 0;
    margin: 10px 0;
}

.detalles-clima p {
    margin: 4px 0;
    font-size: 0.95rem;
    text-align: left;
    width: 100%;
}

.alerta-recomendacion {
    font-size: 0.95rem;
    font-style: italic;
}

/* Animación sutil de entrada para la tarjeta */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
/* Optimización para teléfonos móviles */
@media (max-width: 480px) {
    .buscador {
        flex-direction: column;
        gap: 12px;
    }

    input, button {
        width: 100%;
        font-size: 16px;
    }
}