:root {
    --purple-50: hsl(260, 100%, 95%);
    --purple-300: hsl(264, 82%, 80%);
    --purple-500: hsl(263, 55%, 52%);

    --white: hsl(0, 0%, 100%);
    --grey-100: hsl(214, 17%, 92%);
    --grey-200: hsl(0, 0%, 81%);
    --grey-400: hsl(224, 10%, 45%);
    --grey-500: hsl(217, 19%, 35%);
    --dark-blue: hsl(219, 29%, 14%);
    --black: hsl(0, 0%, 7%);

    --font-main: 'Barlow Semi Condensed', sans-serif;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fs-body: 0.8125rem;

    --shadow: 40px 40px 50px 40px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: var(--font-main);
    font-size: var(--fs-body);
    font-weight: var(--fw-medium);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;    
    padding: 40px 20px;

}


.card {
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
}

.card-purple {
    background-color: var(--purple-500);
    background-image: url('./images/bg-pattern-quotation.svg');
    background-repeat: no-repeat;
    background-position: top 0 right 8%;
    color: var(--white);   
    grid-column: span 2;
}
.card-purple header img {
    border: 2px solid var(--purple-300);
}
.card-gray {
    background-color: var(--grey-500);
    color: var(--grey-100);
    grid-column: 3;
}

.card-white {
    background-color: var(--white);
    color: var(--grey-500);
    grid-column: 1;
}

.card-dark {
    background-color: var(--dark-blue);
    color: var(--grey-100);
    grid-column: 2 /span 2;
    
}

.card-dark header img {
    border: 2px solid var(--purple-300);
}

.card-white-tall {
    background-color: var(--white);
    color: var(--grey-500);
    grid-column: 4;
    grid-row: 1 / span 2;
}

.card img{
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5);
}
.card header{
    display: flex;
    gap: 0.8rem;
    align-items: center;
    padding-bottom: 0.8rem;
}

.card h3 {
    font-size: 1.25rem;
    line-height: 1.2;
    font-weight: var(--fw-semibold);
    padding-bottom: 1rem;
}
header h2 {
    font-size: 0.9rem;
    font-weight: var(--fw-semibold);
    line-height: 1;
}
header p {
    font-size: 0.7rem;
    opacity: 0.7;
    margin-top: 0.2rem;
}

.card > p {
    font-size: 0.8125rem;
    line-height: 1.4;
    opacity: 0.8;
}

.grid-container{
    display: grid;  
    grid-template-columns: repeat(4, 1fr);   
    gap: 24px;
    max-width: 1110px;
    margin: 40px auto;
}


.attribution {
    font-size: 0.6875rem;
    text-align: center;
}

.attribution a {
    color: hsl(228, 45%, 44%);
}
.attribution a:focus {
    outline: 2px dotted var(--purple-500);
    outline-offset: 4px;
}

/* --- AJUSTE PARA MOBILE (Desktop-First usa max-width) --- */
@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: 1fr;
        padding: 24px;
  
    }  
    .card-purple,
    .card-gray,
    .card-white,
    .card-dark,
    .card-white-tall {
        grid-column: auto;
        grid-row: auto;
    }
}