body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f0f2f5;
    color: #1c1e21;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

article[data-testid="test-profile-card"] {
    background-color: #ffffff;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    padding: 24px;
    max-width: 800px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
}

figure {
    margin: 0;
    padding: 0;
}

img[data-testid="test-user-avatar"] {
    width: 170px;
    height: 170px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

h2[data-testid="test-user-name"] {
    margin: 0;
    font-size: 1.85rem;
}

p[data-testid="test-user-bio"] {
    margin: 0;
    font-size: 1rem;
    color: #616872;
    max-width: 600px;
}

span[data-testid="test-user-time"] {
    font-family: monospace;
    font-weight: bold;
    background-color: #fff;
    color: #616872;
    padding: 2px 6px;
    border-radius: 4px;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

section.user-details h3 {
    margin-bottom: 8px;
    font-size: 1.1rem;
}

/* Hobbies and Dislike Inside Styling */
section.user-details li {
    background-color: #f0f2f5;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
}

section.user-nav {
    padding: 1rem 2rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* --- Social media Styling --- */
ul[data-testid="test-user-social-links"] a {
    text-decoration: none;
    color: #ffffff;
    background-color: #1c1e21;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: bold;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

ul[data-testid="test-user-social-links"] a:hover {
    background-color: #616872;
    transform: translateY(-2px);
}

a:focus {
    outline: 3px solid #1c1e21;
    outline-offset: 2px;
    border-radius: 8px;
}

/* --- Desktop Layout --- */
@media (min-width: 768px) {
    article[data-testid="test-profile-card"] {
        display: grid;
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto 1fr;
        column-gap: 32px;
        row-gap: 16px;
        text-align: left;
    }

    figure {
        grid-row: 1 / span 3;
        margin: 0;
        align-self: center;
    }

    .user-info {
        grid-column: 2;
    }

    .user-details:nth-of-type(1) {
        grid-column: 2;
    }

    .user-details:nth-of-type(2) {
        grid-column: 2;
    }

    /* to align left on pc */
    ul {
        justify-content: flex-start;
    }
}

/* footer */

footer {
    text-align: center;
    padding: 1rem;
    color: #6b7280;
    font-size: 0.9rem;
    margin-top: 2rem;
}

/* about */

.about section {
    margin-bottom: 2rem;
    padding: 1rem 2rem;
}

.about h2,
.about h3 {
  color: #1c1e21;
  margin-bottom: 0.75rem;
}

.about p {
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.about {
    animation: fadeIn 0.6s ease-in-out;
}

/* contact section */
.contact {
    max-width: 800px;
    width: 100%;
    margin: 2rem auto;
    background: #fff;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  }

.contact form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.contact input,
.contact textarea {
  padding: 0.75rem;
  border: 1px solid #d1d5db;
  border-radius: 0.5rem;
  font-size: 1rem;
  width: 100%;
}

.error {
    color: red;
}

  button {
    background: #1c1e21;
    color: #fff;
    padding: 0.75rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}

  button:hover {
    background: #616872;
}