:root {
    --bg-color: #fcfcfc;
    --text-main: #000000;
    --text-secondary: #888888;
    --card-bg: #ffffff;
    --border-color: #eeeeee;
}
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    color: var(--text-main);
    text-align: center;
}
/* Cabecera */
.header h1 {
    font-family: 'Playfair Display', serif;
    font-size: 4rem;
    margin-bottom: 5px;
    letter-spacing: -2px;
}
.header p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 40px;
}
/* Contenedor de tarjetas */
.links-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 600px;
    width: 90%;
    margin-bottom: 50px;
}
/* Tarjeta */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px 10px;
    text-decoration: none;
    color: var(--text-main);
    transition: 
        transform 0.2s ease,
        box-shadow 0.2s ease,
        background-color 0.25s ease,
        color 0.25s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
/* HOVER */
.card:hover {
    background-color: #111;
    color: #fff;
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0,0,0,0.15);
}
.card:hover i,
.card:hover span {
    color: #fff;
}
/* Icono */
.card i {
    font-size: 1.8rem;
    margin-bottom: 15px;
}
/* Texto */
.card span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}
/* Separador */
.divider {
    width: 60px;
    height: 2px;
    background-color: #333;
    margin-bottom: 30px;
}
/* Footer */
footer {
    font-size: 0.75rem;
    color: var(--text-secondary);
}
/* RESPONSIVE */
@media (max-width: 768px) {
    .header h1 {
        font-size: 3rem;
    }
    .card {
        padding: 25px 5px;
    }
    .card i {
        font-size: 1.5rem;
    }
    .card span {
        font-size: 0.75rem;
    }
}
@media (max-width: 480px) {
    .header h1 {
        font-size: 2.5rem;
    }
    .card {
        padding: 20px 5px;
    }
    .links-container {
        width: 95%;
        gap: 10px;
    }
}
Ahora siempre será 2 columnas × 3 filas en PC, tablet y móvil. Solo ajusté el max-width a 600px y eliminé los cambios de columnas en los media queries. 👌haceme un cambio mas
las tarjetas comienzan en color blanco y cuando el mouse se posiciona sobre los botones, se vuelven negro
Necesito que sea al reves, es decir que comienzen en negro, con los iconos en blanco, y cuando el cursor se posiciona, los iconos se vuelvan negro y las tarjetas blancas3:16 p. m.css:root {
    --bg-color: #fcfcfc;
    --text-main: #000000;
    --text-secondary: #888888;
    --card-bg: #111111;
    --border-color: #eeeeee;
}
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    color: var(--text-main);
    text-align: center;
}
/* Cabecera */
.header h1 {
    font-family: 'Playfair Display', serif;
    font-size: 4rem;
    margin-bottom: 5px;
    letter-spacing: -2px;
}
.header p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 40px;
}
/* Contenedor de tarjetas */
.links-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 600px;
    width: 90%;
    margin-bottom: 50px;
}
/* Tarjeta */
.card {
    background: #111;
    border: 1px solid #333;
    border-radius: 12px;
    padding: 30px 10px;
    text-decoration: none;
    color: #fff;
    transition: 
        transform 0.2s ease,
        box-shadow 0.2s ease,
        background-color 0.25s ease,
        color 0.25s ease,
        border-color 0.25s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
/* Estado inicial - iconos y texto en blanco */
.card i,
.card span {
    color: #fff;
    transition: color 0.25s ease;
}
/* HOVER */
.card:hover {
    background-color: #ffffff;
    color: #000;
    border-color: var(--border-color);
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0,0,0,0.15);
}
.card:hover i,
.card:hover span {
    color: #000;
}
/* Icono */
.card i {
    font-size: 1.8rem;
    margin-bottom: 15px;
}
/* Texto */
.card span {
    font-size: 0.85rem;
}
/* Separador */
.divider {
    width: 60px;
    height: 2px;
    background-color: #333;
    margin-bottom: 30px;
}
/* Footer */
footer {
    font-size: 0.75rem;
    color: var(--text-secondary);
}
/* RESPONSIVE */
@media (max-width: 768px) {
    .header h1 {
        font-size: 3rem;
    }
    .card {
        padding: 25px 5px;
    }
    .card i {
        font-size: 1.5rem;
    }
    .card span {
        font-size: 0.75rem;
    }
}
@media (max-width: 480px) {
    .header h1 {
        font-size: 2.5rem;
    }
    .card {
        padding: 20px 5px;
    }
    .links-container {
        width: 95%;
        gap: 10px;
    }
}