:root {
    /* paleta Oracle*/
    --bg-primary: #312d2a;
    --bg-secondary: #F8F7FF;
    --text-primary: #1E1E1E;
    --text-secondary: #FFFFFF;
    --accent-primary: #c24130;
    /* otros colores */
    --accent-secondary: #4ECDC4;
    --shadow-color: rgba(0, 0, 0, 0.2);
    --oracle-gray-light: #F5F5F5;
    --oracle-gray-medium: #E0E0E0;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 1rem;
}

/* Contenedor principal */
.container {
    width: 100%;
    max-width: 700px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

/* Header */
.header {
    text-align: center;
    padding: 1rem 0;
}
.header__title {
    font-family: 'Fredericka the Great', serif;
    font-size: clamp(2.5rem, 8vw, 4rem); /* Título fluido */
    color: var(--text-secondary);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}
.header__title span {
    color: var(--accent-primary);
}
.header__image {
    width: clamp(200px, 25vw, 150px);
    margin-top: 1rem;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
    border-radius: 50%;
}

/* Sección principal */
.main-content {
    background-color: var(--bg-secondary);
    border-radius: 24px;
    padding: 2rem;
    border-top: 5px solid var(--accent-primary);
    box-shadow: 0 10px 30px var(--shadow-color);
    width: 100%;
    margin-bottom: 10rem;
}
.form__title {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 1.5rem;
}
.form__group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}
.form__input {
    flex-grow: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--bg-primary);
    border-radius: 12px;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.form__input:focus {
    outline: none;
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 3px rgba(106, 90, 224, 0.2);
}

/* botones */
.btn-actions {
    text-align: center;
}
.button {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px var(--shadow-color);
}        
.button:active {
    transform: translateY(0);
    box-shadow: none;
}
.btn--primary {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
}
.btn--primary:hover {
    background-color: #62544a;
}
.btn--accent {
    background-color: var(--accent-primary);
    color: var(--text-secondary);
}
.btn--accent:hover {
    background-color: #A93829;
}
.btn--secondary {
    background-color: var(--oracle-gray-medium);
    color: var(--text-primary);
}
.btn--secondary:hover {
    background-color: #C8C8C8;
}

/* --- LISTA DE AMIGOS Y RESULTADO --- */
.friends-section {
    margin-top: 2rem;
}
.friends-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 1rem;
}
.friends__title {
    font-size: 1.25rem;
    font-weight: 600;
    border-bottom: 2px solid var(--oracle-gray-light);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}
.friends__count {
        font-size: 0.9rem;
        font-weight: 600;
        background-color: var(--oracle-gray-medium);
        color: var(--text-primary);
        padding: 0.25rem 0.75rem;
        border-radius: 1rem;
}
#listaAmigos {
    list-style: none;
    padding-left: 1rem;
    color: var(--text-primary);
}
#listaAmigos li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
}
#listaAmigos li::before {
    content: '›';
    font-weight: bold;
    color: var(--accent-secondary);
    margin-right: 0.75rem;
    font-size: 1.5rem;
}
#resultado {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: #e8f9f7;
    border-radius: 12px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    min-height: 70px;
    justify-content: center;
    align-items: center;
    transition: all 0.5s ease;
} 
.loading-container {
    display: none; /* Oculto por defecto */
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
}
.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border-left-color: #31363a;
    animation: spin 1s ease infinite;
    margin-bottom: 1rem;
}
@keyframes spin {
    0% {
    transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}
.loading-text {
    font-style: italic;
    color: var(--text-primary);
}
.resultado__header {
    text-align: center;
    margin-bottom: 1.5rem;
}
.resultado__title {
    font-family: 'Fredericka the Great', serif;
    font-size: 2rem;
    color: var(--accent-primary);
    margin: 0;
}
.resultado__subtitle {
    font-style: italic;
    color: var(--text-primary);
    margin-top: 0.5rem;
}
#listaResultados {
    padding: 0;
    margin: 0;
    display: inline-block;
    text-align: left;
    list-style-position: inside; /* Pone los bullets dentro del bloque del item */
}
#listaResultados li::marker {
    color: var(--accent-secondary);
}
#listaResultados li {
    font-size: 1.2rem;
    color: var(--text-primary);
    padding: 0.25rem 0;
}
#listaResultados li span {
    font-weight: bold;
    color: var(--accent-primary);
}

/* --- Contenedor de botones --- */
.btn-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
}

#author-copyright{
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-align: center;
}
        
/* --- MEDIA QUERIES PARA RESPONSIVIDAD --- */
@media (max-width: 480px) {
    body {
        padding: 0.5rem;
    }
    .main-content{
        padding: 1.5rem;
    }
    .btn-actions {
        flex-direction: column;
    }
    .button {
        width: 100%;
    }
}