/* ========================================================= */
/* --- VARIABLES GLOBALES (Tema Claro) --- */
/* ========================================================= */
:root {
    --color-bg: hsla(210, 30%, 95%, 0.9);
    --color-card: hsla(190, 60%, 98%, 0.7);
    --color-text: hsla(210, 20%, 20%, 1);
    --color-text2: hsla(210, 20%, 35%, 1);
    --color-border: hsla(200, 20%, 75%, 0.6);
    --color-search-bg: hsla(0, 0%, 100%, 0.9);
    --color-search-icon: hsla(210, 20%, 25%, 1);
    --color-theme-btn-bg: hsla(200, 30%, 85%, 0.4);
    --color-theme-btn-icon: hsla(210, 20%, 25%, 1);
    --color-link: hsla(200, 70%, 45%, 1);
    --color-link-hover: hsla(200, 80%, 35%, 1);
    --footer-bg: hsla(210, 25%, 85%, 0.8);
    --footer-text: hsla(210, 20%, 20%, 1);
    --box-shadow: hsla(210, 10%, 10%, 0.15);
    --box-shadow-hover: hsla(210, 10%, 10%, 0.25);
    --transition: 250ms ease-in-out;
}

/* ========================================================= */
/* --- VARIABLES GLOBALES (Tema Oscuro) --- */
/* ========================================================= */
[data-theme="dark"] {
    --color-bg: hsla(220, 20%, 10%, 0.95);
    --color-card: hsla(220, 15%, 18%, 0.75);
    --color-text: hsla(0, 0%, 90%, 1);
    --color-text2: hsla(0, 0%, 75%, 1);
    --color-border: hsla(220, 10%, 40%, 0.7);
    --color-search-bg: hsla(220, 15%, 25%, 0.6);
    --color-search-icon: hsla(0, 0%, 90%, 1);
    --color-theme-btn-bg: hsla(220, 15%, 28%, 0.5);
    --color-theme-btn-icon: hsla(0, 0%, 90%, 1);
    --color-link: hsla(190, 80%, 60%, 1);
    --color-link-hover: hsla(190, 90%, 70%, 1);
    --footer-bg: hsla(220, 18%, 24%, 0.9);
    --footer-text: hsla(0, 0%, 90%, 1);
    --box-shadow: hsla(0, 0%, 0%, 0.4);
    --box-shadow-hover: hsla(0, 0%, 0%, 0.5);
}

/* ========================================================= */
/* --- RESET BÁSICO Y TIPOGRAFÍA --- */
/* ========================================================= */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-family: 'Inter', system-ui, sans-serif; }
body {
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    transition: background var(--transition), color var(--transition);
    display: flex;
    flex-direction: column;
    line-height: 1.6;
    letter-spacing: 0.01875rem;
}

/* ========================================================= */
/* --- ESTILOS GENERALES Y EFECTOS --- */
/* ========================================================= */
.glass {
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    box-shadow: 4px 4px 8px var(--box-shadow);
}
:focus-visible {
    outline: 2px solid var(--color-link);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ========================================================= */
/* --- HEADER --- */
/* ========================================================= */
.header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--footer-bg);
    width: 100%;
    margin: 0 auto;
    transition: background var(--transition);
    border-bottom: 1px solid var(--color-border);
}
.header__nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}
.header__title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -1px;
    color: var(--color-text);
}
.header__actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}
.theme-toggle,
.lang-toggle {
    background: var(--color-theme-btn-bg);
    color: var(--color-theme-btn-icon);
    border: none;
    border-radius: 50%;
    width: 2.7rem;
    height: 2.7rem;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}
.lang-toggle {
    font-weight: 700;
    font-size: 1.1rem;
    width: 2.4rem;
    height: 2.4rem;
    margin-right: 0.2rem;
}
.theme-toggle:hover,
.lang-toggle:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 4px 12px hsla(0, 0%, 0%, 0.2);
}

/* ========================================================= */
/* --- SECCIÓN PRINCIPAL / DESCRIPCIÓN --- */
/* ========================================================= */
.title {
    margin: 25px auto;
    padding: 0 1rem;
    max-width: 700px;
    text-align: center;
    font-size: 1.15rem;
    line-height: 1.7;
    color: var(--color-text2);
}

/* ========================================================= */
/* --- BUSCADOR --- */
/* ========================================================= */
.search-section {
    display: flex;
    justify-content: center;
    margin: 1.5rem 0 3.5rem 0;
}
.search-box {
    /*background: var(--color-search-bg);*/
    /*border: 2px solid var(--color-border);*/
    border-radius: 12px;
    display: flex;
    align-items: center;
    padding: 12px 22px;
    max-width: 650px;
    width: 92%;
    box-shadow: 0 6px 15px var(--box-shadow);
    transition: all var(--transition);
    /*****/
    margin: 0 auto;
    /*padding: 2em;*/
    /*width: 300px;*/
    background: #e1e1e1;
    text-align: center;
    /*border-radius: 10px;*/
    position: relative;
}
.search-box1:hover {
    border-color: var(--color-link);
    box-shadow: 0 8px 20px var(--box-shadow-hover);
}
.search-box1:focus-within {
    border-color: var(--color-link);
    box-shadow: 0 0 0 4px hsla(200, 70%, 45%, 0.25), 0 8px 20px var(--box-shadow-hover);
    transform: translateY(-2px);
}
.search-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-right: 12px;
    color: var(--color-search-icon);
}
.search-icon img {
    filter: drop-shadow(0 0 2px hsla(0, 0%, 0%, 0.15));
}
.search-input {
    flex-grow: 1;
    border: none;
    background: transparent;
    padding: 5px 0;
    font-size: 1.2em;
    /*color: var(--color-text);*/
    color: hsla(210, 20%, 20%, 1);
    outline: none;
    height: auto;
}
.search-input::placeholder {
    color: hsla(210, 20%, 40%, 0.7);
}

/******/
@property --angle{
    syntax: "<angle>";
    initial-value: 0deg;
    inherits: false;
}

.search-box::after, .search-box1::before{
    content: '';
    position: absolute;
    height: 100%;
    width: 100%;
    background-image: conic-gradient(from var(--angle), #ff4545, #00ff99, #006aff, #ff0095, #ff4545);
    top: 50%;
    left: 50%;
    translate: -50% -50%;
    z-index: -1;
    padding: 2px;
    border-radius: 12px;
    animation: 2s spin linear infinite;
}
.search-box::before{
    filter: blur(1.5rem);
    opacity: 0.5;
}

@keyframes spin{
    from{
        --angle: 0deg;
    }
    to{
        --angle: 360deg;
    }
}


/* ========================================================= */
/* --- CONTENEDOR DE CARDS Y GRUPOS --- */
/* ========================================================= */
.cards-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto 4rem auto;
    padding: 0 1.5rem;
}
.group-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 1rem 0 0.5rem;
    text-align: left;
    border-bottom: 2px solid var(--color-link);
    padding-bottom: 0.5rem;
}
.group-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}
@media (min-width: 600px) {
    .group-cards { grid-template-columns: repeat(2, 1fr); gap: 2.2rem; }
}
@media (min-width: 1000px) {
    .group-cards { grid-template-columns: repeat(3, 1fr); gap: 1.8rem; }
}

/* ========================================================= */
/* --- TARJETAS (CARDS) --- */
/* ========================================================= */
.card {
    background: var(--color-card);
    border-radius: 20px;
    box-shadow: 0 6px 12px var(--box-shadow);
    border: 1px solid var(--color-border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border 0.3s ease, background 0.3s ease;
}
.card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 28px var(--box-shadow-hover);
    border: 2px solid var(--color-link);
    /*background: hsla(0, 0%, 100%, 0.95);*/
}
.card__subtit {
    display: flex;
    align-items: center;
    margin-bottom: 0.8rem;
}
.card__subtit img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    margin-right: 0.8rem;
}
.card__content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.card__title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
    color: var(--color-text);
}
.card__description {
    font-size: 1rem;
    color: var(--color-text2);
    margin-bottom: 1.2rem;
    flex: 1;
    line-height: 1.5;
}
.card__link {
    color: var(--color-link);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.3s ease, background 0.3s ease, transform 0.3s ease;
    align-self: flex-start;
    border-radius: 0.6rem;
    padding: 0.4rem 1rem;
}
.card__link:hover,
.card__link:focus {
    color: var(--color-link-hover);
    background: hsla(200, 70%, 45%, 0.2);
    transform: translateY(-2px);
}
.card__link:visited {
    color: var(--color-link);
}

/* ========================================================= */
/* --- FOOTER --- */
/* ========================================================= */
.footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    text-align: center;
    padding: 1rem 1.5rem 0.8rem 1.5rem;
    font-size: 0.95rem;
    border-top: 2px solid var(--color-border);
    transition: background var(--transition), color var(--transition);
    margin-top: auto;
}
.footer__nav {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0;
    flex-wrap: wrap;
    gap: 0.8rem;
}