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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #fafafa;
    color: #262626;
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 60px;
    background: #fff;
    border-bottom: 1px solid #dbdbdb;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.nav-content {
    width: 100%;
    max-width: 935px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    font-family: 'Courier New', monospace;
    font-size: 24px;
    font-weight: bold;
}

.nav-icons {
    display: flex;
    gap: 20px;
    font-size: 20px;
}

.icon {
    cursor: pointer;
}

.feed-container {
    margin-top: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-bottom: 20px;
}

.post {
    background: #fff;
    border: 1px solid #dbdbdb;
    width: 100%;
    max-width: 600px;
    margin-bottom: 24px;
    border-radius: 3px;
}

.post-header {
    display: flex;
    align-items: center;
    padding: 12px;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #efefef;
    margin-right: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
    font-weight: bold;
}

.username {
    font-weight: 600;
    font-size: 14px;
}

.post-image-container {
    width: 100%;
    aspect-ratio: 1 / 1;
    background: #efefef;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.post-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-actions {
    padding: 12px 12px 8px;
    display: flex;
    gap: 16px;
    font-size: 24px;
}

.action-btn {
    cursor: pointer;
    transition: transform 0.1s;
}

.action-btn:active {
    transform: scale(1.2);
}

.post-info {
    padding: 0 12px 12px;
}

.likes-count {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 8px;
    display: block;
}

.caption {
    font-size: 14px;
    line-height: 18px;
}

.caption .username {
    margin-right: 5px;
}

@media (max-width: 600px) {
    .post {
        border-left: none;
        border-right: none;
        border-radius: 0;
    }
}